TY  - CONF
AU  - Mrđa, Predrag D.
AU  - Kitanović, Marko
AU  - Miljić, Nenad
AU  - Popović, Slobodan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4845
AB  - For a given internal combustion (IC) engine stationary test plan, significant time savings during its realization could be achieved if the sequence of test points execution is adequately determined. The criterion for stabilizing the engine operating point is determined by the magnitude of the change in the most inert parameter, and in the general case, it is the temperature of the engine exhaust gases. A certain level of prior knowledge about the examined object is necessary to conduct such an analysis. If there are no results from previous tests, simulation models, or experiences, the Slow Dynamic Slope (SDS) tests are a great way to quickly gather the necessary information. The task of finding the optimal sequence for a stationary engine testing plan can be set as Travelling Salesman Problem (TSP). This paper will present the application of one of the heuristic methods for solving the TSP on the example of testing the IC engine, which is a very complex dynamic system. Following this model, it is possible to optimize the stationary test plan for any other dynamic system. The basic idea is to find such a sequence of stationary operating points, during the realization of which a minor deviation of the engine exhaust gas temperature is obtained, resulting in the operating point's shortest stabilization time.
PB  - IOP Publishing
C3  - IOP Conference Series: Materials Science and Engineering
T1  - Internal combustion engine test plan execution order optimization using Travelling Salesman Problem heuristics approach
SP  - 012005
VL  - 1271
DO  - 10.1088/1757-899X/1271/1/012005
ER  - 

@conference{
author = "Mrđa, Predrag D. and Kitanović, Marko and Miljić, Nenad and Popović, Slobodan",
year = "2022",
abstract = "For a given internal combustion (IC) engine stationary test plan, significant time savings during its realization could be achieved if the sequence of test points execution is adequately determined. The criterion for stabilizing the engine operating point is determined by the magnitude of the change in the most inert parameter, and in the general case, it is the temperature of the engine exhaust gases. A certain level of prior knowledge about the examined object is necessary to conduct such an analysis. If there are no results from previous tests, simulation models, or experiences, the Slow Dynamic Slope (SDS) tests are a great way to quickly gather the necessary information. The task of finding the optimal sequence for a stationary engine testing plan can be set as Travelling Salesman Problem (TSP). This paper will present the application of one of the heuristic methods for solving the TSP on the example of testing the IC engine, which is a very complex dynamic system. Following this model, it is possible to optimize the stationary test plan for any other dynamic system. The basic idea is to find such a sequence of stationary operating points, during the realization of which a minor deviation of the engine exhaust gas temperature is obtained, resulting in the operating point's shortest stabilization time.",
publisher = "IOP Publishing",
journal = "IOP Conference Series: Materials Science and Engineering",
title = "Internal combustion engine test plan execution order optimization using Travelling Salesman Problem heuristics approach",
pages = "012005",
volume = "1271",
doi = "10.1088/1757-899X/1271/1/012005"
}

Mrđa, P. D., Kitanović, M., Miljić, N.,& Popović, S.. (2022). Internal combustion engine test plan execution order optimization using Travelling Salesman Problem heuristics approach. in IOP Conference Series: Materials Science and Engineering
IOP Publishing., 1271, 012005.
https://doi.org/10.1088/1757-899X/1271/1/012005

Mrđa PD, Kitanović M, Miljić N, Popović S. Internal combustion engine test plan execution order optimization using Travelling Salesman Problem heuristics approach. in IOP Conference Series: Materials Science and Engineering. 2022;1271:012005.
doi:10.1088/1757-899X/1271/1/012005 .

Mrđa, Predrag D., Kitanović, Marko, Miljić, Nenad, Popović, Slobodan, "Internal combustion engine test plan execution order optimization using Travelling Salesman Problem heuristics approach" in IOP Conference Series: Materials Science and Engineering, 1271 (2022):012005,
https://doi.org/10.1088/1757-899X/1271/1/012005 . .

TY  - CONF
AU  - Mrđa, Predrag D.
AU  - Kitanović, Marko
AU  - Miljić, Nenad
AU  - Popović, Slobodan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4844
PB  - Faculty of Engineering, University of Kragujevac
C3  - International Congress Motor Vehicles & Motors 2022
T1  - Internal Combustion Engine Test Plan Execution Order Optimization Using Travelling Salesman Problem Heuristics Approach
EP  - 24
SP  - 23
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4844
ER  - 

@conference{
author = "Mrđa, Predrag D. and Kitanović, Marko and Miljić, Nenad and Popović, Slobodan",
year = "2022",
publisher = "Faculty of Engineering, University of Kragujevac",
journal = "International Congress Motor Vehicles & Motors 2022",
title = "Internal Combustion Engine Test Plan Execution Order Optimization Using Travelling Salesman Problem Heuristics Approach",
pages = "24-23",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4844"
}

Mrđa, P. D., Kitanović, M., Miljić, N.,& Popović, S.. (2022). Internal Combustion Engine Test Plan Execution Order Optimization Using Travelling Salesman Problem Heuristics Approach. in International Congress Motor Vehicles & Motors 2022
Faculty of Engineering, University of Kragujevac., 23-24.
https://hdl.handle.net/21.15107/rcub_machinery_4844

Mrđa PD, Kitanović M, Miljić N, Popović S. Internal Combustion Engine Test Plan Execution Order Optimization Using Travelling Salesman Problem Heuristics Approach. in International Congress Motor Vehicles & Motors 2022. 2022;:23-24.
https://hdl.handle.net/21.15107/rcub_machinery_4844 .

Mrđa, Predrag D., Kitanović, Marko, Miljić, Nenad, Popović, Slobodan, "Internal Combustion Engine Test Plan Execution Order Optimization Using Travelling Salesman Problem Heuristics Approach" in International Congress Motor Vehicles & Motors 2022 (2022):23-24,
https://hdl.handle.net/21.15107/rcub_machinery_4844 .

TY  - CONF
AU  - Kitanović, Marko
AU  - Mrđa, Predrag D.
AU  - Popović, Slobodan
AU  - Miljić, Nenad
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4843
PB  - Faculty of Engineering, University of Kragujevac
C3  - International Congress Motor Vehicles & Motors 2022
T1  - The Influence of NARX Control Parameters on the Fuel Efficiency Improvement of a Hydraulic Hybrid Powertrain System
EP  - 30
SP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4843
ER  - 

@conference{
author = "Kitanović, Marko and Mrđa, Predrag D. and Popović, Slobodan and Miljić, Nenad",
year = "2022",
publisher = "Faculty of Engineering, University of Kragujevac",
journal = "International Congress Motor Vehicles & Motors 2022",
title = "The Influence of NARX Control Parameters on the Fuel Efficiency Improvement of a Hydraulic Hybrid Powertrain System",
pages = "30-29",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4843"
}

Kitanović, M., Mrđa, P. D., Popović, S.,& Miljić, N.. (2022). The Influence of NARX Control Parameters on the Fuel Efficiency Improvement of a Hydraulic Hybrid Powertrain System. in International Congress Motor Vehicles & Motors 2022
Faculty of Engineering, University of Kragujevac., 29-30.
https://hdl.handle.net/21.15107/rcub_machinery_4843

Kitanović M, Mrđa PD, Popović S, Miljić N. The Influence of NARX Control Parameters on the Fuel Efficiency Improvement of a Hydraulic Hybrid Powertrain System. in International Congress Motor Vehicles & Motors 2022. 2022;:29-30.
https://hdl.handle.net/21.15107/rcub_machinery_4843 .

Kitanović, Marko, Mrđa, Predrag D., Popović, Slobodan, Miljić, Nenad, "The Influence of NARX Control Parameters on the Fuel Efficiency Improvement of a Hydraulic Hybrid Powertrain System" in International Congress Motor Vehicles & Motors 2022 (2022):29-30,
https://hdl.handle.net/21.15107/rcub_machinery_4843 .

TY  - JOUR
AU  - Kitanović, Marko
AU  - Popović, Slobodan
AU  - Miljić, Nenad
AU  - Mrđa, Predrag D.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6748
AB  - Significant research efforts are invested in the quest for solutions that will increase the fuel economy and reduce the environmental impacts of ICE-powered vehicles. The main objective of the study presented in this paper has been to analyze and assess the performance of a control methodology for a parallel hydraulic hybrid powertrain system of a transit bus. A simulation model of the vehicle has been calibrated by analyzing data obtained during an experiment conducted in real-world traffic conditions aboard a Belgrade transit bus. A Dynamic Programming optimization procedure has been applied on the calibrated powertrain model and an optimal configuration that minimizes the fuel consumption has been selected. A Neural Network-based, implementable control algorithm has then been formed through a machine learning process involving data from the optimal, non-implementable Dynamic Programming-based control. Several Neural Network configurations have been tested to obtain the best fuel economy for the range of conditions encountered during normal transit bus operation. It has been shown that a considerable fuel consumption reduction on the order of 30% could be achieved by implementing such a system and calibration method.
PB  - University of Kragujevac, Faculty of Engineering
T2  - Mobility & Vehicle Mechanics
T1  - A Neural Network-based Control Algorithm for a Hydraulic Hybrid Powertrain System
EP  - 66
IS  - 1
SP  - 55
VL  - 48
DO  - 10.24874/mvm.2022.48.01.05
ER  - 

@article{
author = "Kitanović, Marko and Popović, Slobodan and Miljić, Nenad and Mrđa, Predrag D.",
year = "2022",
abstract = "Significant research efforts are invested in the quest for solutions that will increase the fuel economy and reduce the environmental impacts of ICE-powered vehicles. The main objective of the study presented in this paper has been to analyze and assess the performance of a control methodology for a parallel hydraulic hybrid powertrain system of a transit bus. A simulation model of the vehicle has been calibrated by analyzing data obtained during an experiment conducted in real-world traffic conditions aboard a Belgrade transit bus. A Dynamic Programming optimization procedure has been applied on the calibrated powertrain model and an optimal configuration that minimizes the fuel consumption has been selected. A Neural Network-based, implementable control algorithm has then been formed through a machine learning process involving data from the optimal, non-implementable Dynamic Programming-based control. Several Neural Network configurations have been tested to obtain the best fuel economy for the range of conditions encountered during normal transit bus operation. It has been shown that a considerable fuel consumption reduction on the order of 30% could be achieved by implementing such a system and calibration method.",
publisher = "University of Kragujevac, Faculty of Engineering",
journal = "Mobility & Vehicle Mechanics",
title = "A Neural Network-based Control Algorithm for a Hydraulic Hybrid Powertrain System",
pages = "66-55",
number = "1",
volume = "48",
doi = "10.24874/mvm.2022.48.01.05"
}

Kitanović, M., Popović, S., Miljić, N.,& Mrđa, P. D.. (2022). A Neural Network-based Control Algorithm for a Hydraulic Hybrid Powertrain System. in Mobility & Vehicle Mechanics
University of Kragujevac, Faculty of Engineering., 48(1), 55-66.
https://doi.org/10.24874/mvm.2022.48.01.05

Kitanović M, Popović S, Miljić N, Mrđa PD. A Neural Network-based Control Algorithm for a Hydraulic Hybrid Powertrain System. in Mobility & Vehicle Mechanics. 2022;48(1):55-66.
doi:10.24874/mvm.2022.48.01.05 .

Kitanović, Marko, Popović, Slobodan, Miljić, Nenad, Mrđa, Predrag D., "A Neural Network-based Control Algorithm for a Hydraulic Hybrid Powertrain System" in Mobility & Vehicle Mechanics, 48, no. 1 (2022):55-66,
https://doi.org/10.24874/mvm.2022.48.01.05 . .

TY  - JOUR
AU  - Knežević, Dragan
AU  - Bulatović, Željko
AU  - Petrović, Velimir
AU  - Jovanović, Stevan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6259
AB  - The paper presents the results of research into the possibility of using a mixture of various types of biodiesel
fuel with standard diesel fuel of mineral origin in a mixture ratio of 50:50, labelled B50, on a diesel engine
with direct injection intended for small agricultural machinery driving. The analysis was performed in terms
of comparing the pressure flow in the cylinder and the dynamics of the combustion process over the heat
release flow in the engine cylinder. It was found that with the specified fuel mixture ratio in the mixture there
were no major changes in the pressure flow in the cylinder and the heat release process, which indicates that
the given fuel mixture ratio can be used without problems to power this class of engine in long-termoperation, without fear of possible harmful consequences for the engine.
PB  - Tractors and Power Machines
T2  - Tractors and Power Machines
T1  - Analysis of the Biofuel Combustion Process in a Small Agricultural Diesel Engine
EP  - 26
IS  - No.1 / 2
SP  - 21
VL  - 27
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6259
ER  - 

@article{
author = "Knežević, Dragan and Bulatović, Željko and Petrović, Velimir and Jovanović, Stevan",
year = "2022",
abstract = "The paper presents the results of research into the possibility of using a mixture of various types of biodiesel
fuel with standard diesel fuel of mineral origin in a mixture ratio of 50:50, labelled B50, on a diesel engine
with direct injection intended for small agricultural machinery driving. The analysis was performed in terms
of comparing the pressure flow in the cylinder and the dynamics of the combustion process over the heat
release flow in the engine cylinder. It was found that with the specified fuel mixture ratio in the mixture there
were no major changes in the pressure flow in the cylinder and the heat release process, which indicates that
the given fuel mixture ratio can be used without problems to power this class of engine in long-termoperation, without fear of possible harmful consequences for the engine.",
publisher = "Tractors and Power Machines",
journal = "Tractors and Power Machines",
title = "Analysis of the Biofuel Combustion Process in a Small Agricultural Diesel Engine",
pages = "26-21",
number = "No.1 / 2",
volume = "27",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6259"
}

Knežević, D., Bulatović, Ž., Petrović, V.,& Jovanović, S.. (2022). Analysis of the Biofuel Combustion Process in a Small Agricultural Diesel Engine. in Tractors and Power Machines
Tractors and Power Machines., 27(No.1 / 2), 21-26.
https://hdl.handle.net/21.15107/rcub_machinery_6259

Knežević D, Bulatović Ž, Petrović V, Jovanović S. Analysis of the Biofuel Combustion Process in a Small Agricultural Diesel Engine. in Tractors and Power Machines. 2022;27(No.1 / 2):21-26.
https://hdl.handle.net/21.15107/rcub_machinery_6259 .

Knežević, Dragan, Bulatović, Željko, Petrović, Velimir, Jovanović, Stevan, "Analysis of the Biofuel Combustion Process in a Small Agricultural Diesel Engine" in Tractors and Power Machines, 27, no. No.1 / 2 (2022):21-26,
https://hdl.handle.net/21.15107/rcub_machinery_6259 .

TY  - JOUR
AU  - Petrović, Velimir
AU  - Knežević, Dragan
AU  - Bulatović, Željko
AU  - Dimitrijević, Bojan
AU  - Jovanović, Stevan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6239
AB  - In the paperwork had been observed nessesery steps in the introduction of diesel engines final production
application in the last ten to twenty years, it can be clearly concluded that their development is significantly
dictated by the legal regulations on permitted exhaust emissions. In order to meet these regulations,
successively with the introduction of increasingly stringent requirements, improvements were made to the
engine and its systems in order to reduce the emission of toxic components below the prescribed limits, ie to
meet them. The biggest problem was achieving the required emission levels of PM particles and nitrogen
oxides NOx. This is all the more so because the requirements for reducing these components were very often
contradictory, ie solutions that reduced particulate emissions most often increased the emission of nitrogen
oxides.
PB  - Novi Sad :Naučno društvo za pogonske mašine, traktore i održavanje
T2  - Tractors and Power Machines
T1  - CO2  Emission Monitoring According New Legislation for Passenger Cars, Light Commercial, Heavy-Duty, Agricultural and NRMM Vehicles
EP  - 56
IS  - No.1 / 2
SP  - 50
VL  - 27
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6239
ER  - 

@article{
author = "Petrović, Velimir and Knežević, Dragan and Bulatović, Željko and Dimitrijević, Bojan and Jovanović, Stevan",
year = "2022",
abstract = "In the paperwork had been observed nessesery steps in the introduction of diesel engines final production
application in the last ten to twenty years, it can be clearly concluded that their development is significantly
dictated by the legal regulations on permitted exhaust emissions. In order to meet these regulations,
successively with the introduction of increasingly stringent requirements, improvements were made to the
engine and its systems in order to reduce the emission of toxic components below the prescribed limits, ie to
meet them. The biggest problem was achieving the required emission levels of PM particles and nitrogen
oxides NOx. This is all the more so because the requirements for reducing these components were very often
contradictory, ie solutions that reduced particulate emissions most often increased the emission of nitrogen
oxides.",
publisher = "Novi Sad :Naučno društvo za pogonske mašine, traktore i održavanje",
journal = "Tractors and Power Machines",
title = "CO2  Emission Monitoring According New Legislation for Passenger Cars, Light Commercial, Heavy-Duty, Agricultural and NRMM Vehicles",
pages = "56-50",
number = "No.1 / 2",
volume = "27",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6239"
}

Petrović, V., Knežević, D., Bulatović, Ž., Dimitrijević, B.,& Jovanović, S.. (2022). CO2  Emission Monitoring According New Legislation for Passenger Cars, Light Commercial, Heavy-Duty, Agricultural and NRMM Vehicles. in Tractors and Power Machines
Novi Sad :Naučno društvo za pogonske mašine, traktore i održavanje., 27(No.1 / 2), 50-56.
https://hdl.handle.net/21.15107/rcub_machinery_6239

Petrović V, Knežević D, Bulatović Ž, Dimitrijević B, Jovanović S. CO2  Emission Monitoring According New Legislation for Passenger Cars, Light Commercial, Heavy-Duty, Agricultural and NRMM Vehicles. in Tractors and Power Machines. 2022;27(No.1 / 2):50-56.
https://hdl.handle.net/21.15107/rcub_machinery_6239 .

Petrović, Velimir, Knežević, Dragan, Bulatović, Željko, Dimitrijević, Bojan, Jovanović, Stevan, "CO2  Emission Monitoring According New Legislation for Passenger Cars, Light Commercial, Heavy-Duty, Agricultural and NRMM Vehicles" in Tractors and Power Machines, 27, no. No.1 / 2 (2022):50-56,
https://hdl.handle.net/21.15107/rcub_machinery_6239 .

TY  - THES
AU  - Kitanović, Marko
PY  - 2021
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=8316
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:24142/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=47814665
UR  - https://nardus.mpn.gov.rs/handle/123456789/18616
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/84
AB  - Pogonski sistemi savremenih vozila predmet su istraživanja velikog broja naučnika širom sveta. Osnovni cilj istraživanja ogleda se u zadovoljavanju sve složenijih i oštrijih zakonskih odredbi u pogledu toksične izduvne emisije i smanjenja potrošnje goriva, uz zadržavanje povoljnih performansi vozila. Hibridni pogonski sistemi koji, pored motora sa unutrašnjim sagorevanjem, obuhvataju i dodatnu pogonsku mašinu i alternativni akumulator energije, nude velike mogućnosti u pogledu uštede goriva. Od presudne važnosti za ostvarivanje potencijalnih ušteda jesu optimizacija funkcionalnih i upravljačkih parametara sistema. Predmet ove disertacije jeste eksperimentalno i teorijsko istraživanje u oblasti optimizacije hidrauličnog hibridnog pogonskog sistema namenjenog pogonu vozila javnog gradskog prevoza putnika. Važna odlika takvih sistema ogleda se u upotrebi hidro-pneumatskih akumulatora koje karakterišu niske vrednosti specifične energije. Upravo zato, javlja se potreba da se pažljivim izborom parametara akumulatora omogući maksimalno prikupljanje energije kočenja u fazama voznog ciklusa kada će i rezultujuće uštede u potrošnji biti najveće. Formiranjem detaljnog simulacionog modela hidrauličnog hibridnog pogonskog sistema, izvršeno je određivanje uticaja mase elastomerne pene, pritiska prednaprezanja i radne zapremine hidro-pneumatskog akumulatora na stepen korisnosti pogonskog sistema u celini. Takođe, ispitana je mogućnost primene metoda zasnovanih na neuronskim mrežama u procesu izvođenja i primene optimalnog upravljačkog algoritma. Na osnovu snimljenih voznih ciklusa, formiran je optimalan algoritam upravljanja upotrebom referentne metode dinamičkog programiranja koji je potom upotrebljen kao ulazni skup podataka za treniranje veštačkih neuronskih mreža različitih konfiguracija. Primenom funkcionalne optimizacije i predložene metode upravljanja, postignuto je smanjenje potrošnje goriva od 23,9% u smeru kretanja 1 i 25,5% u smeru kretanja 2 i stepen optimalnosti upravljačkog algoritma od 83,7% i 79,8%, respektivno.
AB  - Great scientific and engineering effoorts are being invested in improving the fuel economy and emission performance standards of powertrain systems amid ever-increasing legislative pressure. Hybrid powertrain systems, comprising a conventional internal combustion engine and an additional prime mover and its corresponding energy storage system, offeffoer great opportunities for fuel economy improvements. However, functional and control parameters optimization is of crucial importance in order to achieve the full extent of potential improvements. The subject of this dissertation is experimental and theoretical investigation into the ficeld of optimization of a hydraulic hybrid powertrain system intended for the propulsion of a transit bus. TheTheese hybrid propulsion solutions employ hydro-pneumatic accumulators for energy storage, which are characterized by low specific energy values. Because of this, it is of crucial importance to carefully choose the accumulator parameters in order to harness the maximum amount of regenerative braking energy during the deceleration phases that will yield the greatest fuel economy improvement. A comprehensive simulation model of a hydraulic hybrid powertrain system has been devised, which has allowed for the determination of the influfluuence of elastomeric foam mass, preload pressure and accumulator capacity on the resulting powertrain system efficfficciency and the potential fuel savings. For maximizing the achievable fuel savings, a neural network-based control algorithm trained using the optimal control trajectories derived using Dynamic Programming has been investigated. By applying the functional and optimal control optimizations presented in this dissertation, average fuel savings of 23.9% have been achieved in direction 1 of the transit bus driving cycle and 25.5% in direction 2. TheTheese ficgures represent 83.7% and 79.8% of the fuel economy improvements obtained using the unimplementable Dynamic Programming algorithm, respectively.
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Optimizacija funkcionalnih i upravljačkih parametara hibridnog pogonskog sistema vozila javnog gradskog prevoza
T1  - Functional and control parameters optimization for a transit bus hybrid povertrain system
UR  - https://hdl.handle.net/21.15107/rcub_nardus_18616
ER  - 

@phdthesis{
author = "Kitanović, Marko",
year = "2021",
abstract = "Pogonski sistemi savremenih vozila predmet su istraživanja velikog broja naučnika širom sveta. Osnovni cilj istraživanja ogleda se u zadovoljavanju sve složenijih i oštrijih zakonskih odredbi u pogledu toksične izduvne emisije i smanjenja potrošnje goriva, uz zadržavanje povoljnih performansi vozila. Hibridni pogonski sistemi koji, pored motora sa unutrašnjim sagorevanjem, obuhvataju i dodatnu pogonsku mašinu i alternativni akumulator energije, nude velike mogućnosti u pogledu uštede goriva. Od presudne važnosti za ostvarivanje potencijalnih ušteda jesu optimizacija funkcionalnih i upravljačkih parametara sistema. Predmet ove disertacije jeste eksperimentalno i teorijsko istraživanje u oblasti optimizacije hidrauličnog hibridnog pogonskog sistema namenjenog pogonu vozila javnog gradskog prevoza putnika. Važna odlika takvih sistema ogleda se u upotrebi hidro-pneumatskih akumulatora koje karakterišu niske vrednosti specifične energije. Upravo zato, javlja se potreba da se pažljivim izborom parametara akumulatora omogući maksimalno prikupljanje energije kočenja u fazama voznog ciklusa kada će i rezultujuće uštede u potrošnji biti najveće. Formiranjem detaljnog simulacionog modela hidrauličnog hibridnog pogonskog sistema, izvršeno je određivanje uticaja mase elastomerne pene, pritiska prednaprezanja i radne zapremine hidro-pneumatskog akumulatora na stepen korisnosti pogonskog sistema u celini. Takođe, ispitana je mogućnost primene metoda zasnovanih na neuronskim mrežama u procesu izvođenja i primene optimalnog upravljačkog algoritma. Na osnovu snimljenih voznih ciklusa, formiran je optimalan algoritam upravljanja upotrebom referentne metode dinamičkog programiranja koji je potom upotrebljen kao ulazni skup podataka za treniranje veštačkih neuronskih mreža različitih konfiguracija. Primenom funkcionalne optimizacije i predložene metode upravljanja, postignuto je smanjenje potrošnje goriva od 23,9% u smeru kretanja 1 i 25,5% u smeru kretanja 2 i stepen optimalnosti upravljačkog algoritma od 83,7% i 79,8%, respektivno., Great scientific and engineering effoorts are being invested in improving the fuel economy and emission performance standards of powertrain systems amid ever-increasing legislative pressure. Hybrid powertrain systems, comprising a conventional internal combustion engine and an additional prime mover and its corresponding energy storage system, offeffoer great opportunities for fuel economy improvements. However, functional and control parameters optimization is of crucial importance in order to achieve the full extent of potential improvements. The subject of this dissertation is experimental and theoretical investigation into the ficeld of optimization of a hydraulic hybrid powertrain system intended for the propulsion of a transit bus. TheTheese hybrid propulsion solutions employ hydro-pneumatic accumulators for energy storage, which are characterized by low specific energy values. Because of this, it is of crucial importance to carefully choose the accumulator parameters in order to harness the maximum amount of regenerative braking energy during the deceleration phases that will yield the greatest fuel economy improvement. A comprehensive simulation model of a hydraulic hybrid powertrain system has been devised, which has allowed for the determination of the influfluuence of elastomeric foam mass, preload pressure and accumulator capacity on the resulting powertrain system efficfficciency and the potential fuel savings. For maximizing the achievable fuel savings, a neural network-based control algorithm trained using the optimal control trajectories derived using Dynamic Programming has been investigated. By applying the functional and optimal control optimizations presented in this dissertation, average fuel savings of 23.9% have been achieved in direction 1 of the transit bus driving cycle and 25.5% in direction 2. TheTheese ficgures represent 83.7% and 79.8% of the fuel economy improvements obtained using the unimplementable Dynamic Programming algorithm, respectively.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Optimizacija funkcionalnih i upravljačkih parametara hibridnog pogonskog sistema vozila javnog gradskog prevoza, Functional and control parameters optimization for a transit bus hybrid povertrain system",
url = "https://hdl.handle.net/21.15107/rcub_nardus_18616"
}

Kitanović, M.. (2021). Optimizacija funkcionalnih i upravljačkih parametara hibridnog pogonskog sistema vozila javnog gradskog prevoza. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_18616

Kitanović M. Optimizacija funkcionalnih i upravljačkih parametara hibridnog pogonskog sistema vozila javnog gradskog prevoza. 2021;.
https://hdl.handle.net/21.15107/rcub_nardus_18616 .

Kitanović, Marko, "Optimizacija funkcionalnih i upravljačkih parametara hibridnog pogonskog sistema vozila javnog gradskog prevoza" (2021),
https://hdl.handle.net/21.15107/rcub_nardus_18616 .

TY  - JOUR
AU  - Mrđa, Predrag D.
AU  - Miljić, Nenad
AU  - Popović, Slobodan
AU  - Kitanović, Marko
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6747
AB  - Requirements regarding high fuel efficiency, low pollutants and CO2 emission impact of the internal combustion (IC) engine results in high control calibration complexity. Modern IC engines are equipped with numerous electronically controlled subsystems, whose usage leads to almost exponential growth of stationary operating points that need to be evaluated and optimised. In that perspective, the methodology for fast pre-knowledge acquisition of examined system is presented through the application of Slow Dynamic Slope experiments – SDS. Continual slow change of a control parameter excites the system, in such a way, that allow obtaining of an approximately stationary operating regime, without the time-consuming operating point settling period. By analysing stationary-based approximation results of Slow Dynamic Slope experiments, conducted within the IC engine global operation domain (engine speed and load), certain zones could be identified. Within those zones, increased number of stationary tests is desirable in order to provide a more precise approximative model of observed engine output parameters. In this way, relatively fast dynamic SDS experiments could be used to optimise the stationary-based test plan leading to overall time savings dedicated to IC engine testing.
PB  - University of Kragujevac, Faculty of Engineering
T2  - Mobility & Vehicle Mechanics
T1  - Stationary Test Plan Optimisation using Slow Dynamic Slope Engine Screening
EP  - 34
IS  - 3
SP  - 23
VL  - 47
DO  - 10.24874/mvm.2021.47.03.03
ER  - 

@article{
author = "Mrđa, Predrag D. and Miljić, Nenad and Popović, Slobodan and Kitanović, Marko",
year = "2021",
abstract = "Requirements regarding high fuel efficiency, low pollutants and CO2 emission impact of the internal combustion (IC) engine results in high control calibration complexity. Modern IC engines are equipped with numerous electronically controlled subsystems, whose usage leads to almost exponential growth of stationary operating points that need to be evaluated and optimised. In that perspective, the methodology for fast pre-knowledge acquisition of examined system is presented through the application of Slow Dynamic Slope experiments – SDS. Continual slow change of a control parameter excites the system, in such a way, that allow obtaining of an approximately stationary operating regime, without the time-consuming operating point settling period. By analysing stationary-based approximation results of Slow Dynamic Slope experiments, conducted within the IC engine global operation domain (engine speed and load), certain zones could be identified. Within those zones, increased number of stationary tests is desirable in order to provide a more precise approximative model of observed engine output parameters. In this way, relatively fast dynamic SDS experiments could be used to optimise the stationary-based test plan leading to overall time savings dedicated to IC engine testing.",
publisher = "University of Kragujevac, Faculty of Engineering",
journal = "Mobility & Vehicle Mechanics",
title = "Stationary Test Plan Optimisation using Slow Dynamic Slope Engine Screening",
pages = "34-23",
number = "3",
volume = "47",
doi = "10.24874/mvm.2021.47.03.03"
}

Mrđa, P. D., Miljić, N., Popović, S.,& Kitanović, M.. (2021). Stationary Test Plan Optimisation using Slow Dynamic Slope Engine Screening. in Mobility & Vehicle Mechanics
University of Kragujevac, Faculty of Engineering., 47(3), 23-34.
https://doi.org/10.24874/mvm.2021.47.03.03

Mrđa PD, Miljić N, Popović S, Kitanović M. Stationary Test Plan Optimisation using Slow Dynamic Slope Engine Screening. in Mobility & Vehicle Mechanics. 2021;47(3):23-34.
doi:10.24874/mvm.2021.47.03.03 .

Mrđa, Predrag D., Miljić, Nenad, Popović, Slobodan, Kitanović, Marko, "Stationary Test Plan Optimisation using Slow Dynamic Slope Engine Screening" in Mobility & Vehicle Mechanics, 47, no. 3 (2021):23-34,
https://doi.org/10.24874/mvm.2021.47.03.03 . .

TY  - JOUR
AU  - Petrović, Velimir
AU  - Knežević, Dragan
AU  - Bulatović, Željko
AU  - Jovanović, Stevan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6236
AB  - In the paperwork had been observed nessesery steps in the introduction of diesel engines final production
application in the last ten to twenty years, it can be clearly concluded that their development is significantly
dictated by the legal regulations on permitted exhaust emissions. In order to meet these regulations,
successively with the introduction of increasingly stringent requirements, improvements were made to the
engine and its systems in order to reduce the emission of toxic components below the prescribed limits, ie to
meet them. The biggest problem was achieving the required emission levels of PM particles and nitrogen
oxides NOx. This is all the more so because the requirements for reducing these components were very often
contradictory, ie solutions that reduced particulate emissions most often increased the emission of nitrogen
oxides.
PB  - Tractors and Power Machines
T2  - Tractors and Power Machines
T1  - Application of Modern Systems for After Treatment of Exhaust Gas of Agricurtular Engines
EP  - 20
IS  - No. 1 / 2
SP  - 13
VL  - 26
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6236
ER  - 

@article{
author = "Petrović, Velimir and Knežević, Dragan and Bulatović, Željko and Jovanović, Stevan",
year = "2021",
abstract = "In the paperwork had been observed nessesery steps in the introduction of diesel engines final production
application in the last ten to twenty years, it can be clearly concluded that their development is significantly
dictated by the legal regulations on permitted exhaust emissions. In order to meet these regulations,
successively with the introduction of increasingly stringent requirements, improvements were made to the
engine and its systems in order to reduce the emission of toxic components below the prescribed limits, ie to
meet them. The biggest problem was achieving the required emission levels of PM particles and nitrogen
oxides NOx. This is all the more so because the requirements for reducing these components were very often
contradictory, ie solutions that reduced particulate emissions most often increased the emission of nitrogen
oxides.",
publisher = "Tractors and Power Machines",
journal = "Tractors and Power Machines",
title = "Application of Modern Systems for After Treatment of Exhaust Gas of Agricurtular Engines",
pages = "20-13",
number = "No. 1 / 2",
volume = "26",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6236"
}

Petrović, V., Knežević, D., Bulatović, Ž.,& Jovanović, S.. (2021). Application of Modern Systems for After Treatment of Exhaust Gas of Agricurtular Engines. in Tractors and Power Machines
Tractors and Power Machines., 26(No. 1 / 2), 13-20.
https://hdl.handle.net/21.15107/rcub_machinery_6236

Petrović V, Knežević D, Bulatović Ž, Jovanović S. Application of Modern Systems for After Treatment of Exhaust Gas of Agricurtular Engines. in Tractors and Power Machines. 2021;26(No. 1 / 2):13-20.
https://hdl.handle.net/21.15107/rcub_machinery_6236 .

Petrović, Velimir, Knežević, Dragan, Bulatović, Željko, Jovanović, Stevan, "Application of Modern Systems for After Treatment of Exhaust Gas of Agricurtular Engines" in Tractors and Power Machines, 26, no. No. 1 / 2 (2021):13-20,
https://hdl.handle.net/21.15107/rcub_machinery_6236 .

TY  - THES
AU  - Mrđa, Predrag D.
PY  - 2020
UR  - https://nardus.mpn.gov.rs/handle/123456789/20709
UR  - https://phaidrabg.bg.ac.rs/detail/o:23502
UR  - https://plus.cobiss.net/cobiss/sr/sr/bib/ubsm/27390985
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:23502/bdef:Content/download
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6753
AB  - Sa povećanjem obima i broja zahteva koje savremeni motori SUS moraju da zadovolje, drastično se povećavaju potrebe za razvojnim resursima. Povećanjem dimenzionalnosti upravljačkog sistema motora SUS, ukupan broj upravljačkih parametara raste, što za posledicu ima značajno usložnjavanje procesa optimizacije s obzirom na približno eksponencijalno povećanje broja mogućih kombinacija diskretnih vrednosti upravljačkih parametara. 
Plan stacionarnog ispitivanja motora SUS se formira na osnovu prethodno stečenog znanja o ispitivanom objektu. U ovom radu analizirana je jedna od metoda dinamičkog ispitivanja motora na osnovu koje se nivo predznanja proširuje radi formiranja kvalitetnijeg i efikasnijeg plana ispitivanja. Predmetna metoda se zasniva na sporoj promeni jednog globalnog upravljačkog parametra, dok se ostali zadržavaju na konstantnom nivou. U literaturi se ovakav vid dinamičkog ispitivanja naziva Slow Dynamic Slope (spor dinamički nagib - SDN). S obzirom na to da je motor SUS izrazito nelinearan i dinamički sistem, u radu su analizirani rezultati ispitivanja dva različita pristupa sprovođenja dinamičkog eksperimenta. Prva kategorija SDN sekvenci započinje stacionarnim radnim režimom, dok drugu kategoriju čine sekvence sa isključivo dinamičkim karakterom tj. sa potpunim odsustvom ustaljenog upravljanja.
Za potrebe ovog istraživanja, variran je parametar opterećenja motora po nagibnoj funkciji različitih gradijenata. Na osnovu dinamičkih odziva, tj. srednje linije karakterističnih ovojnica merenih signala (posmatranih u domenu varirane pobude), formirne su aproksimacije koje u većoj ili manjoj meri opisuju stacionarni odziv posmatranog sistema na delu gobalnog radnog polja motora SUS. Time je, relativno kratkotrajnim dinamičkim ispitivanjem, prikupljena velika količina informacija o približnoj stacionaranoj karakteristici ispitivanog motora, a te informacije mogu da se iskoriste za dalju nadogradnju plana stacionarnog ispitivanja.
Pokazano je da postoje određene oblasti globalnog radnog polja motora SUS u okviru kojih bi bilo poželjno povećati gustinu stacionarnih radnih režima kako bi se formirali precizniji aproksimativni modeli. Takođe, zahvaljujući ovako stečenom predznanju, moguće je formirati približno idealan redosled ispitivanja posmatrano sa aspekta minimizacije neophodnog vremena stabilizacije za niz stacionarnih radnih režima predviđenih planom ispitivanja motora SUS u laboratorijskim uslovima.
AB  - With ever-increasing demands that modern internal combustion (IC) engines must meet, needed development resources drastically increases as well. Higher dimensionality of the IC engine control system, results in a significant complexity of the optimization process, due to the approximately exponential increase in the total number of possible control parameters value combinations. 
The plan for stationary testing of the IC engine is formed based on the previously acquired knowledge about the tested object. In this Dissertation, one of the dynamic engine testing pre-knowledge acquisition methods is analyzed, with the goal of obtaining a better and more efficient stationary test plan. This method is based on a slow change of one global control parameter, while the others remain at a constant level. In the literature, this type of dynamic testing is called Slow Dynamic Slope (SDS). Given that the IC engine is a highly nonlinear and dynamic system, the Dissertation analyzes the results of two different approaches to conducting a dynamic experiment. The first category of SDS sequences begins with a stationary operating mode, while the second category consists of sequences with an exclusively dynamic character, i.e. with a complete absence of (quasi-) steady state engine management.
For the scope of this research, the engine load parameter was varied according to the slope function of different gradients. Based on dynamic responses, i.e. middle lines of characteristic envelopes of measured signals (observed in the domain of varied excitation), stationary base approximations are formed, which, to some extent, describe the stationary response of the observed system on the global IC engine operation field. Thus, a relatively short-term dynamic test, allows for the collection of a large amount of information on the approximate stationary characteristics of the tested engine, and this information can be used to further upgrade the stationary test plan.
It has been shown that there are certain areas of the global IC engine operation field within which it would be desirable to increase number of stationary operating points in order to form more precise approximation models. Also, thanks to the acquired pre-knowledge, it is possible to form an almost ideal test sequence from the aspect of minimizing the necessary stabilization time for a number of stationary operating regimes defined by the test plan, and thus perform laboratory IC engine testing in more effective way.
PB  - Univerzitet u Beogradu, Mašinski fakultet
T2  - 2020
T1  - Povećanje efiksanosti ispitivanja motora SUS primenom dinamičkih metoda
T1  - Internal combustion engine testing efficiency improvement using dynamic methods
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6753
ER  - 

@phdthesis{
author = "Mrđa, Predrag D.",
year = "2020",
abstract = "Sa povećanjem obima i broja zahteva koje savremeni motori SUS moraju da zadovolje, drastično se povećavaju potrebe za razvojnim resursima. Povećanjem dimenzionalnosti upravljačkog sistema motora SUS, ukupan broj upravljačkih parametara raste, što za posledicu ima značajno usložnjavanje procesa optimizacije s obzirom na približno eksponencijalno povećanje broja mogućih kombinacija diskretnih vrednosti upravljačkih parametara. 
Plan stacionarnog ispitivanja motora SUS se formira na osnovu prethodno stečenog znanja o ispitivanom objektu. U ovom radu analizirana je jedna od metoda dinamičkog ispitivanja motora na osnovu koje se nivo predznanja proširuje radi formiranja kvalitetnijeg i efikasnijeg plana ispitivanja. Predmetna metoda se zasniva na sporoj promeni jednog globalnog upravljačkog parametra, dok se ostali zadržavaju na konstantnom nivou. U literaturi se ovakav vid dinamičkog ispitivanja naziva Slow Dynamic Slope (spor dinamički nagib - SDN). S obzirom na to da je motor SUS izrazito nelinearan i dinamički sistem, u radu su analizirani rezultati ispitivanja dva različita pristupa sprovođenja dinamičkog eksperimenta. Prva kategorija SDN sekvenci započinje stacionarnim radnim režimom, dok drugu kategoriju čine sekvence sa isključivo dinamičkim karakterom tj. sa potpunim odsustvom ustaljenog upravljanja.
Za potrebe ovog istraživanja, variran je parametar opterećenja motora po nagibnoj funkciji različitih gradijenata. Na osnovu dinamičkih odziva, tj. srednje linije karakterističnih ovojnica merenih signala (posmatranih u domenu varirane pobude), formirne su aproksimacije koje u većoj ili manjoj meri opisuju stacionarni odziv posmatranog sistema na delu gobalnog radnog polja motora SUS. Time je, relativno kratkotrajnim dinamičkim ispitivanjem, prikupljena velika količina informacija o približnoj stacionaranoj karakteristici ispitivanog motora, a te informacije mogu da se iskoriste za dalju nadogradnju plana stacionarnog ispitivanja.
Pokazano je da postoje određene oblasti globalnog radnog polja motora SUS u okviru kojih bi bilo poželjno povećati gustinu stacionarnih radnih režima kako bi se formirali precizniji aproksimativni modeli. Takođe, zahvaljujući ovako stečenom predznanju, moguće je formirati približno idealan redosled ispitivanja posmatrano sa aspekta minimizacije neophodnog vremena stabilizacije za niz stacionarnih radnih režima predviđenih planom ispitivanja motora SUS u laboratorijskim uslovima., With ever-increasing demands that modern internal combustion (IC) engines must meet, needed development resources drastically increases as well. Higher dimensionality of the IC engine control system, results in a significant complexity of the optimization process, due to the approximately exponential increase in the total number of possible control parameters value combinations. 
The plan for stationary testing of the IC engine is formed based on the previously acquired knowledge about the tested object. In this Dissertation, one of the dynamic engine testing pre-knowledge acquisition methods is analyzed, with the goal of obtaining a better and more efficient stationary test plan. This method is based on a slow change of one global control parameter, while the others remain at a constant level. In the literature, this type of dynamic testing is called Slow Dynamic Slope (SDS). Given that the IC engine is a highly nonlinear and dynamic system, the Dissertation analyzes the results of two different approaches to conducting a dynamic experiment. The first category of SDS sequences begins with a stationary operating mode, while the second category consists of sequences with an exclusively dynamic character, i.e. with a complete absence of (quasi-) steady state engine management.
For the scope of this research, the engine load parameter was varied according to the slope function of different gradients. Based on dynamic responses, i.e. middle lines of characteristic envelopes of measured signals (observed in the domain of varied excitation), stationary base approximations are formed, which, to some extent, describe the stationary response of the observed system on the global IC engine operation field. Thus, a relatively short-term dynamic test, allows for the collection of a large amount of information on the approximate stationary characteristics of the tested engine, and this information can be used to further upgrade the stationary test plan.
It has been shown that there are certain areas of the global IC engine operation field within which it would be desirable to increase number of stationary operating points in order to form more precise approximation models. Also, thanks to the acquired pre-knowledge, it is possible to form an almost ideal test sequence from the aspect of minimizing the necessary stabilization time for a number of stationary operating regimes defined by the test plan, and thus perform laboratory IC engine testing in more effective way.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
journal = "2020",
title = "Povećanje efiksanosti ispitivanja motora SUS primenom dinamičkih metoda, Internal combustion engine testing efficiency improvement using dynamic methods",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6753"
}

Mrđa, P. D.. (2020). Povećanje efiksanosti ispitivanja motora SUS primenom dinamičkih metoda. in 2020
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_machinery_6753

Mrđa PD. Povećanje efiksanosti ispitivanja motora SUS primenom dinamičkih metoda. in 2020. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_6753 .

Mrđa, Predrag D., "Povećanje efiksanosti ispitivanja motora SUS primenom dinamičkih metoda" in 2020 (2020),
https://hdl.handle.net/21.15107/rcub_machinery_6753 .

TY  - CONF
AU  - Mrđa, Predrag D.
AU  - Miljić, Nenad
AU  - Popović, Slobodan
AU  - Kitanović, Marko
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4838
AB  - Requirements regarding high fuel efficiency, low pollutants and CO2 emission impact of the internal combustion (IC) engine results in high control calibration complexity. Modern IC engines are equipped with numerous electronically controlled subsystems, whose usage leads to almost exponential growth of stationary operating points that need to be evaluated and optimised. In that perspective, the methodology for fast pre-knowledge acquisition of examined system is presented through the application of Slow Dynamic Slope experiments – SDS. Continual slow change of a control parameter excites the system, in such a way, that allow obtaining of an approximately stationary operating regime, without the time-consuming operating point settling period. By analysing stationary-based approximation results of Slow Dynamic Slope experiments, conducted within the IC engine global operation domain (engine speed and load), certain zones could be identified. Within those zones, increased number of stationary tests is desirable in order to provide a more precise approximative model of observed engine output parameters. In this way, relatively fast dynamic SDS experiments could be used to optimise the stationary-based test plan leading to overall time savings dedicated to IC engine testing.
PB  - Faculty of Engineering, University of Kragujevac
C3  - International Congress Motor Vehicles & Motors 2020
T1  - Stationary Test Plan Optimisation Using Slow Dynamic Slope Engine Screening
EP  - 84
SP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4838
ER  - 

@conference{
author = "Mrđa, Predrag D. and Miljić, Nenad and Popović, Slobodan and Kitanović, Marko",
year = "2020",
abstract = "Requirements regarding high fuel efficiency, low pollutants and CO2 emission impact of the internal combustion (IC) engine results in high control calibration complexity. Modern IC engines are equipped with numerous electronically controlled subsystems, whose usage leads to almost exponential growth of stationary operating points that need to be evaluated and optimised. In that perspective, the methodology for fast pre-knowledge acquisition of examined system is presented through the application of Slow Dynamic Slope experiments – SDS. Continual slow change of a control parameter excites the system, in such a way, that allow obtaining of an approximately stationary operating regime, without the time-consuming operating point settling period. By analysing stationary-based approximation results of Slow Dynamic Slope experiments, conducted within the IC engine global operation domain (engine speed and load), certain zones could be identified. Within those zones, increased number of stationary tests is desirable in order to provide a more precise approximative model of observed engine output parameters. In this way, relatively fast dynamic SDS experiments could be used to optimise the stationary-based test plan leading to overall time savings dedicated to IC engine testing.",
publisher = "Faculty of Engineering, University of Kragujevac",
journal = "International Congress Motor Vehicles & Motors 2020",
title = "Stationary Test Plan Optimisation Using Slow Dynamic Slope Engine Screening",
pages = "84-77",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4838"
}

Mrđa, P. D., Miljić, N., Popović, S.,& Kitanović, M.. (2020). Stationary Test Plan Optimisation Using Slow Dynamic Slope Engine Screening. in International Congress Motor Vehicles & Motors 2020
Faculty of Engineering, University of Kragujevac., 77-84.
https://hdl.handle.net/21.15107/rcub_machinery_4838

Mrđa PD, Miljić N, Popović S, Kitanović M. Stationary Test Plan Optimisation Using Slow Dynamic Slope Engine Screening. in International Congress Motor Vehicles & Motors 2020. 2020;:77-84.
https://hdl.handle.net/21.15107/rcub_machinery_4838 .

Mrđa, Predrag D., Miljić, Nenad, Popović, Slobodan, Kitanović, Marko, "Stationary Test Plan Optimisation Using Slow Dynamic Slope Engine Screening" in International Congress Motor Vehicles & Motors 2020 (2020):77-84,
https://hdl.handle.net/21.15107/rcub_machinery_4838 .

TY  - CONF
AU  - Kitanović, Marko
AU  - Popović, Slobodan
AU  - Miljić, Nenad
AU  - Mrđa, Predrag D.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4839
AB  - Significant research efforts are invested in the quest for solutions that will increase the fuel economy and reduce the environmental impacts of ICE-powered vehicles. The main objective of the study presented in this paper has been to analyze and assess the performance of a control methodology for a parallel hydraulic hybrid powertrain system of a transit bus. A simulation model of the vehicle has been calibrated by analyzing data obtained during an experiment conducted in real-world traffic conditions aboard a Belgrade transit bus. A Dynamic Programming optimization procedure has been applied on the calibrated powertrain model and an optimal configuration that minimizes the fuel consumption has been selected. A Neural Network-based, implementable control algorithm has then been formed through a machine learning process involving data from the optimal, nonimplementable Dynamic Programming-based control. Several Neural Network configurations have been tested to obtain the best fuel economy for the range of conditions encountered during normal transit bus operation. It has been shown that a considerable fuel consumption reduction on the order of 30% could be achieved by implementing such a system and calibration method.
PB  - Faculty of Engineering, University of Kragujevac
C3  - International Congress Motor Vehicles & Motors 2020
T1  - A Neural Network-Based Control Algorithm for a Hydraulic Hybrid Powertrain System
EP  - 93
SP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4839
ER  - 

@conference{
author = "Kitanović, Marko and Popović, Slobodan and Miljić, Nenad and Mrđa, Predrag D.",
year = "2020",
abstract = "Significant research efforts are invested in the quest for solutions that will increase the fuel economy and reduce the environmental impacts of ICE-powered vehicles. The main objective of the study presented in this paper has been to analyze and assess the performance of a control methodology for a parallel hydraulic hybrid powertrain system of a transit bus. A simulation model of the vehicle has been calibrated by analyzing data obtained during an experiment conducted in real-world traffic conditions aboard a Belgrade transit bus. A Dynamic Programming optimization procedure has been applied on the calibrated powertrain model and an optimal configuration that minimizes the fuel consumption has been selected. A Neural Network-based, implementable control algorithm has then been formed through a machine learning process involving data from the optimal, nonimplementable Dynamic Programming-based control. Several Neural Network configurations have been tested to obtain the best fuel economy for the range of conditions encountered during normal transit bus operation. It has been shown that a considerable fuel consumption reduction on the order of 30% could be achieved by implementing such a system and calibration method.",
publisher = "Faculty of Engineering, University of Kragujevac",
journal = "International Congress Motor Vehicles & Motors 2020",
title = "A Neural Network-Based Control Algorithm for a Hydraulic Hybrid Powertrain System",
pages = "93-85",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4839"
}

Kitanović, M., Popović, S., Miljić, N.,& Mrđa, P. D.. (2020). A Neural Network-Based Control Algorithm for a Hydraulic Hybrid Powertrain System. in International Congress Motor Vehicles & Motors 2020
Faculty of Engineering, University of Kragujevac., 85-93.
https://hdl.handle.net/21.15107/rcub_machinery_4839

Kitanović M, Popović S, Miljić N, Mrđa PD. A Neural Network-Based Control Algorithm for a Hydraulic Hybrid Powertrain System. in International Congress Motor Vehicles & Motors 2020. 2020;:85-93.
https://hdl.handle.net/21.15107/rcub_machinery_4839 .

Kitanović, Marko, Popović, Slobodan, Miljić, Nenad, Mrđa, Predrag D., "A Neural Network-Based Control Algorithm for a Hydraulic Hybrid Powertrain System" in International Congress Motor Vehicles & Motors 2020 (2020):85-93,
https://hdl.handle.net/21.15107/rcub_machinery_4839 .

TY  - JOUR
AU  - Kitanović, Marko
AU  - Popović, Slobodan
AU  - Miljić, Nenad
AU  - Mrđa, Predrag
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3301
AB  - A dynamic programming optimization algorithm has been applied on a transit bus model in MATLAB in order to assess the fuel economy improvement potential by implementing a hydraulic hybrid powertrain system. The numerical model parameters have been calibrated using experimental data obtained on a Belgrade's public transport bus. This experiment also provided the representative driving cycle on which to conduct simulation analyses. Various functional parameters of a hydraulic hybrid system have been evaluated for obtaining the best possible fuel economy. Dynamic programming optimization runs have been completed for various hydraulic accumulator sizes, preload values and accumulator foam quantities. It has been shown that a fuel economy improvement of 28% can be achieved by implementing such a system.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Numerical analyses of a hydraulic hybrid powertrain system for a transit bus
EP  - 170
IS  - 1
SP  - 159
VL  - 24
DO  - 10.2298/TSCI190308172K
ER  - 

@article{
author = "Kitanović, Marko and Popović, Slobodan and Miljić, Nenad and Mrđa, Predrag",
year = "2020",
abstract = "A dynamic programming optimization algorithm has been applied on a transit bus model in MATLAB in order to assess the fuel economy improvement potential by implementing a hydraulic hybrid powertrain system. The numerical model parameters have been calibrated using experimental data obtained on a Belgrade's public transport bus. This experiment also provided the representative driving cycle on which to conduct simulation analyses. Various functional parameters of a hydraulic hybrid system have been evaluated for obtaining the best possible fuel economy. Dynamic programming optimization runs have been completed for various hydraulic accumulator sizes, preload values and accumulator foam quantities. It has been shown that a fuel economy improvement of 28% can be achieved by implementing such a system.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Numerical analyses of a hydraulic hybrid powertrain system for a transit bus",
pages = "170-159",
number = "1",
volume = "24",
doi = "10.2298/TSCI190308172K"
}

Kitanović, M., Popović, S., Miljić, N.,& Mrđa, P.. (2020). Numerical analyses of a hydraulic hybrid powertrain system for a transit bus. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 24(1), 159-170.
https://doi.org/10.2298/TSCI190308172K

Kitanović M, Popović S, Miljić N, Mrđa P. Numerical analyses of a hydraulic hybrid powertrain system for a transit bus. in Thermal Science. 2020;24(1):159-170.
doi:10.2298/TSCI190308172K .

Kitanović, Marko, Popović, Slobodan, Miljić, Nenad, Mrđa, Predrag, "Numerical analyses of a hydraulic hybrid powertrain system for a transit bus" in Thermal Science, 24, no. 1 (2020):159-170,
https://doi.org/10.2298/TSCI190308172K . .

TY  - JOUR
AU  - Knežević, Dragan
AU  - Petrović, Velimir
AU  - Vorotović, Goran
AU  - Pajković, Vladimir
AU  - Bralović, Predrag
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6095
AB  - Alternative propulsion fuels for diesel engines were highlights for a variety
of research activities within a large number of R&D labs in the world.
Curiosity, as well as basic interest in alternative fuel has been immense
because of its reproducibility, renewability, as well as good ecological
characteristics. Another reason for this interest is a favorable impact on
the economies of the countries engaged in their production, by processing
that kind of bio fuel. This paper presents the results of testing and research
of the three types of alternative fuel gained from bio oil. Analyses and
comparison of the dynamics of combustion process of these alternative
fuels were done in relation to the reference diesel fuel. Burning process of
methyl esters rapeseed (RME100), soya oil (SME100), waste cooking palm
oil (PME100), as well as of regular euro diesel fuel were investigated. It
was found that these fuels were highly usable in diesel engines if they had
been produced according to a proper standard procedure under standard
EN 14214. The application of bio fuel is also very interesting for the
propulsion of agricultural engines and machinery, because it enables the
individual farming of bio fuel products necessary for the appropriate own
machinery.
PB  - FME Transactions
T2  - FME Transactions
T1  - Combustion Characteristics of Several Types of Biofuel in a Diesel Engine
EP  - 328
IS  - 2
SP  - 319
VL  - 48
DO  - 10.5937/fme2002319K
ER  - 

@article{
author = "Knežević, Dragan and Petrović, Velimir and Vorotović, Goran and Pajković, Vladimir and Bralović, Predrag",
year = "2020",
abstract = "Alternative propulsion fuels for diesel engines were highlights for a variety
of research activities within a large number of R&D labs in the world.
Curiosity, as well as basic interest in alternative fuel has been immense
because of its reproducibility, renewability, as well as good ecological
characteristics. Another reason for this interest is a favorable impact on
the economies of the countries engaged in their production, by processing
that kind of bio fuel. This paper presents the results of testing and research
of the three types of alternative fuel gained from bio oil. Analyses and
comparison of the dynamics of combustion process of these alternative
fuels were done in relation to the reference diesel fuel. Burning process of
methyl esters rapeseed (RME100), soya oil (SME100), waste cooking palm
oil (PME100), as well as of regular euro diesel fuel were investigated. It
was found that these fuels were highly usable in diesel engines if they had
been produced according to a proper standard procedure under standard
EN 14214. The application of bio fuel is also very interesting for the
propulsion of agricultural engines and machinery, because it enables the
individual farming of bio fuel products necessary for the appropriate own
machinery.",
publisher = "FME Transactions",
journal = "FME Transactions",
title = "Combustion Characteristics of Several Types of Biofuel in a Diesel Engine",
pages = "328-319",
number = "2",
volume = "48",
doi = "10.5937/fme2002319K"
}

Knežević, D., Petrović, V., Vorotović, G., Pajković, V.,& Bralović, P.. (2020). Combustion Characteristics of Several Types of Biofuel in a Diesel Engine. in FME Transactions
FME Transactions., 48(2), 319-328.
https://doi.org/10.5937/fme2002319K

Knežević D, Petrović V, Vorotović G, Pajković V, Bralović P. Combustion Characteristics of Several Types of Biofuel in a Diesel Engine. in FME Transactions. 2020;48(2):319-328.
doi:10.5937/fme2002319K .

Knežević, Dragan, Petrović, Velimir, Vorotović, Goran, Pajković, Vladimir, Bralović, Predrag, "Combustion Characteristics of Several Types of Biofuel in a Diesel Engine" in FME Transactions, 48, no. 2 (2020):319-328,
https://doi.org/10.5937/fme2002319K . .

TY  - JOUR
AU  - Knežević, Dragan
AU  - Petrović, Velimir
AU  - Vorotović, Goran
AU  - Pajković, Vladimir R.
AU  - Bralović, Predrag D.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3314
AB  - Interesovanje za alternativna goriva koja bi se koristila za pogon motora sus je veoma veliko u čitavom svetu. Zato se istraživanja vezana za ovu problematiku vrše u mnogim vodećim svetskim laboratorijama za motore. Razlog ovog interesovanja su dostupnost ovakvih goriva, povoljne ekološke karakteristike i pozitivan uticaj na ekonomije zemalja koje ovakva goriva mogu da proizvode. U predmetnom radu se daje deo rezulta veoma kompleksnih i dugotrajnih istraživanja dinamike procesa sagorevanja kod dizel motora pogonjenog metilestrima biljnih ulja i to otpadnog palminog jestivog ulja, sojinog ulja i ulja uljane repice. Poređenje promena u radnom procesu motora, pre svega procesu sagorevanja, je vršeno pri sinhronizovanom radu motora na uobičajenim standardnim dizel gorivom mineralnog porekla. Analizom zakona (toka) sagorevanja svakog pojedinačnog goriva, utvrđeno je da postoje razlike koje nisu velikog karaktera, iz čega se može zaključiti da su goriva proizvedena iz biljnih ulja, a po važećem standardu, veoma kvalitetna goriva za pogon dizel motora. Ovo daje mogućnost naročito poljoprivrednim gazdinstvima da samostalno proizvode deo potrebnog goriva sa sopstvenih zemljišnih parcela uz uslov da poseduju odgovarajuću opremu za proizvodnju biodizela.
AB  - Alternative propulsion fuels for diesel engines were highlights for a variety of research activities within a large number of R&D labs in the world. Curiosity, as well as basic interest in alternative fuel has been immense because of its reproducibility, renewability, as well as good ecological characteristics. Another reason for this interest is a favorable impact on the economies of the countries engaged in their production, by processing that kind of bio fuel. This paper presents the results of testing and research of the three types of alternative fuel gained from bio oil. Analyses and comparison of the dynamics of combustion process of these alternative fuels were done in relation to the reference diesel fuel. Burning process of methyl esters rapeseed (RME100), soya oil (SME100), waste cooking palm oil (PME100), as well as of regular Euro diesel fuel were investigated. It was found that these fuels were highly usable in diesel engines if they had been produced according to a proper standard procedure under standard EN 14214. The application of bio fuel is also very interesting for the propulsion of agricultural engines and machinery, because it enables the individual farming of bio fuel products necessary for the appropriate own machinery.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Karakteristike procesa sagorevanja nekih vrsta biogoriva u dizel motoru
T1  - Combustion characteristics of several types of biofuel in a diesel engine
EP  - 328
IS  - 2
SP  - 319
VL  - 48
DO  - 10.5937/fme2002319K
ER  - 

@article{
author = "Knežević, Dragan and Petrović, Velimir and Vorotović, Goran and Pajković, Vladimir R. and Bralović, Predrag D.",
year = "2020",
abstract = "Interesovanje za alternativna goriva koja bi se koristila za pogon motora sus je veoma veliko u čitavom svetu. Zato se istraživanja vezana za ovu problematiku vrše u mnogim vodećim svetskim laboratorijama za motore. Razlog ovog interesovanja su dostupnost ovakvih goriva, povoljne ekološke karakteristike i pozitivan uticaj na ekonomije zemalja koje ovakva goriva mogu da proizvode. U predmetnom radu se daje deo rezulta veoma kompleksnih i dugotrajnih istraživanja dinamike procesa sagorevanja kod dizel motora pogonjenog metilestrima biljnih ulja i to otpadnog palminog jestivog ulja, sojinog ulja i ulja uljane repice. Poređenje promena u radnom procesu motora, pre svega procesu sagorevanja, je vršeno pri sinhronizovanom radu motora na uobičajenim standardnim dizel gorivom mineralnog porekla. Analizom zakona (toka) sagorevanja svakog pojedinačnog goriva, utvrđeno je da postoje razlike koje nisu velikog karaktera, iz čega se može zaključiti da su goriva proizvedena iz biljnih ulja, a po važećem standardu, veoma kvalitetna goriva za pogon dizel motora. Ovo daje mogućnost naročito poljoprivrednim gazdinstvima da samostalno proizvode deo potrebnog goriva sa sopstvenih zemljišnih parcela uz uslov da poseduju odgovarajuću opremu za proizvodnju biodizela., Alternative propulsion fuels for diesel engines were highlights for a variety of research activities within a large number of R&D labs in the world. Curiosity, as well as basic interest in alternative fuel has been immense because of its reproducibility, renewability, as well as good ecological characteristics. Another reason for this interest is a favorable impact on the economies of the countries engaged in their production, by processing that kind of bio fuel. This paper presents the results of testing and research of the three types of alternative fuel gained from bio oil. Analyses and comparison of the dynamics of combustion process of these alternative fuels were done in relation to the reference diesel fuel. Burning process of methyl esters rapeseed (RME100), soya oil (SME100), waste cooking palm oil (PME100), as well as of regular Euro diesel fuel were investigated. It was found that these fuels were highly usable in diesel engines if they had been produced according to a proper standard procedure under standard EN 14214. The application of bio fuel is also very interesting for the propulsion of agricultural engines and machinery, because it enables the individual farming of bio fuel products necessary for the appropriate own machinery.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Karakteristike procesa sagorevanja nekih vrsta biogoriva u dizel motoru, Combustion characteristics of several types of biofuel in a diesel engine",
pages = "328-319",
number = "2",
volume = "48",
doi = "10.5937/fme2002319K"
}

Knežević, D., Petrović, V., Vorotović, G., Pajković, V. R.,& Bralović, P. D.. (2020). Karakteristike procesa sagorevanja nekih vrsta biogoriva u dizel motoru. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 48(2), 319-328.
https://doi.org/10.5937/fme2002319K

Knežević D, Petrović V, Vorotović G, Pajković VR, Bralović PD. Karakteristike procesa sagorevanja nekih vrsta biogoriva u dizel motoru. in FME Transactions. 2020;48(2):319-328.
doi:10.5937/fme2002319K .

Knežević, Dragan, Petrović, Velimir, Vorotović, Goran, Pajković, Vladimir R., Bralović, Predrag D., "Karakteristike procesa sagorevanja nekih vrsta biogoriva u dizel motoru" in FME Transactions, 48, no. 2 (2020):319-328,
https://doi.org/10.5937/fme2002319K . .

TY  - CONF
AU  - Knežević, Dragan
AU  - Petrović, Velimir
AU  - Bulatović, Željko
AU  - Stajić, Vlada
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6082
AB  - In contemporary transport sector and especially in the agricultural production, there is a large
possibility of using alternative engine fuels. In the case of agricultural applications, the largest number of
agricultural machinery's propulsion engines is diesel, which allows the use of various vegetable oils as
propellants. However, this implies that these vegetable oils have been treated by appropriate esterification
procedures and adapted for smooth use in engines. Such fuels are generally called biodiesel as well. This
paper will present some results of an investigation of the combustion process of rapeseed methyl ester of
a single-cylinder direct injection diesel engine designed to drive smaller agricultural machinery, thus
engines. The results of the research are presented in the variant of the charged engine, whereby the
charging process was performed by an external energy source (electromotor and Roots compressor) under
laboratory conditions.
PB  - Society of Thermal Engineers of Serbia
PB  - Faculty of Mechanical Engineering in Niš
C3  - 2019 Proceedings, Sokobanja
T1  - Investigation of biofuel combustion process in direct injection diesel engine
EP  - 992
SP  - 986
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6082
ER  - 

@conference{
author = "Knežević, Dragan and Petrović, Velimir and Bulatović, Željko and Stajić, Vlada",
year = "2019",
abstract = "In contemporary transport sector and especially in the agricultural production, there is a large
possibility of using alternative engine fuels. In the case of agricultural applications, the largest number of
agricultural machinery's propulsion engines is diesel, which allows the use of various vegetable oils as
propellants. However, this implies that these vegetable oils have been treated by appropriate esterification
procedures and adapted for smooth use in engines. Such fuels are generally called biodiesel as well. This
paper will present some results of an investigation of the combustion process of rapeseed methyl ester of
a single-cylinder direct injection diesel engine designed to drive smaller agricultural machinery, thus
engines. The results of the research are presented in the variant of the charged engine, whereby the
charging process was performed by an external energy source (electromotor and Roots compressor) under
laboratory conditions.",
publisher = "Society of Thermal Engineers of Serbia, Faculty of Mechanical Engineering in Niš",
journal = "2019 Proceedings, Sokobanja",
title = "Investigation of biofuel combustion process in direct injection diesel engine",
pages = "992-986",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6082"
}

Knežević, D., Petrović, V., Bulatović, Ž.,& Stajić, V.. (2019). Investigation of biofuel combustion process in direct injection diesel engine. in 2019 Proceedings, Sokobanja
Society of Thermal Engineers of Serbia., 986-992.
https://hdl.handle.net/21.15107/rcub_machinery_6082

Knežević D, Petrović V, Bulatović Ž, Stajić V. Investigation of biofuel combustion process in direct injection diesel engine. in 2019 Proceedings, Sokobanja. 2019;:986-992.
https://hdl.handle.net/21.15107/rcub_machinery_6082 .

Knežević, Dragan, Petrović, Velimir, Bulatović, Željko, Stajić, Vlada, "Investigation of biofuel combustion process in direct injection diesel engine" in 2019 Proceedings, Sokobanja (2019):986-992,
https://hdl.handle.net/21.15107/rcub_machinery_6082 .

TY  - JOUR
AU  - Knežević, Dragan
AU  - Bulatović, Željko
AU  - Petrović, Velimir
AU  - Stajić, Vlada
AU  - Kolendić, Petar
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6084
AB  - The paper presents the results of the study of the effect of different biodiesel-type fuels produced from the
oils of several oilseeds on the exhaust gas composition of a direct injection diesel engine designed to drive
smaller agricultural machinery. The fuels obtained in this way are derived from the corresponding oils by
the method of esterification using methyl alcohol and a catalyst to give the corresponding methyl esters. The
physicochemical characteristics of these methyl esters are approximately equal to the standard Euro diesel
diesel fuel. During the research, a comparative measurement of the exhaust gas composition was made, at
the propulsion of the engine with these fuels, followed by an appropriate analysis of the results. A suitable
research installation has been formed to conduct these studies at the Institute of Motors, Faculty of
Mechanical Engineering in Belgrade.
PB  - Tractors and Power Machines
T2  - Tractors and Power Machines
T1  - Exhaust Emission of Diesel Engines for Operation of Agricultural Mechanization when Working with Different Biofuels
EP  - 20
IS  - No.1/2
SP  - 14
VL  - 24
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6084
ER  - 

@article{
author = "Knežević, Dragan and Bulatović, Željko and Petrović, Velimir and Stajić, Vlada and Kolendić, Petar",
year = "2019",
abstract = "The paper presents the results of the study of the effect of different biodiesel-type fuels produced from the
oils of several oilseeds on the exhaust gas composition of a direct injection diesel engine designed to drive
smaller agricultural machinery. The fuels obtained in this way are derived from the corresponding oils by
the method of esterification using methyl alcohol and a catalyst to give the corresponding methyl esters. The
physicochemical characteristics of these methyl esters are approximately equal to the standard Euro diesel
diesel fuel. During the research, a comparative measurement of the exhaust gas composition was made, at
the propulsion of the engine with these fuels, followed by an appropriate analysis of the results. A suitable
research installation has been formed to conduct these studies at the Institute of Motors, Faculty of
Mechanical Engineering in Belgrade.",
publisher = "Tractors and Power Machines",
journal = "Tractors and Power Machines",
title = "Exhaust Emission of Diesel Engines for Operation of Agricultural Mechanization when Working with Different Biofuels",
pages = "20-14",
number = "No.1/2",
volume = "24",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6084"
}

Knežević, D., Bulatović, Ž., Petrović, V., Stajić, V.,& Kolendić, P.. (2019). Exhaust Emission of Diesel Engines for Operation of Agricultural Mechanization when Working with Different Biofuels. in Tractors and Power Machines
Tractors and Power Machines., 24(No.1/2), 14-20.
https://hdl.handle.net/21.15107/rcub_machinery_6084

Knežević D, Bulatović Ž, Petrović V, Stajić V, Kolendić P. Exhaust Emission of Diesel Engines for Operation of Agricultural Mechanization when Working with Different Biofuels. in Tractors and Power Machines. 2019;24(No.1/2):14-20.
https://hdl.handle.net/21.15107/rcub_machinery_6084 .

Knežević, Dragan, Bulatović, Željko, Petrović, Velimir, Stajić, Vlada, Kolendić, Petar, "Exhaust Emission of Diesel Engines for Operation of Agricultural Mechanization when Working with Different Biofuels" in Tractors and Power Machines, 24, no. No.1/2 (2019):14-20,
https://hdl.handle.net/21.15107/rcub_machinery_6084 .

TY  - CONF
AU  - Kitanović, Marko
AU  - Popović, Slobodan
AU  - Miljić, Nenad
AU  - Mrđa, Predrag D.
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4836
AB  - Great research efforts are invested in the quest for solutions that will increase the fuel economy of ICE-powered vehicles. The main objective of the study presented in this paper has been to analyze the ultimate fuel economy improvement potential of a transit bus by implementing a hybrid electric powertrain system utilizing an ultracapacitors-based accumulator. A simulation model of the vehicle has been calibrated by analyzing data obtained during an experiment conducted in real-world traffic conditions on a Belgrade transit bus. Apart from serving as the input for the powertrain parameters identification procedures, the acquired data also served as the basis for defining the driving cycle that will be used in numerical simulation studies. A Dynamic Programming optimization procedure has been applied on the hybrid powertrain system model in order to assess the ultimate fuel economy improvement potential. The optimization procedure has been executed for various hybrid powertrain parameters and component sizes, allowing the optimal choice of design decisions, in particular the energy accumulator size. Initial study shows that considerable fuel consumption reduction in excess of 30% can be achieved.
PB  - University of Niš, Faculty of Mechanical Engineering in Niš
C3  - 18th Symposium on Thermal Science and Engineering of Serbia
T1  - Dynamic Programming Study of a Hybrid Electric Powertrain System for a Transit Bus
EP  - 997
SP  - 988
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4836
ER  - 

@conference{
author = "Kitanović, Marko and Popović, Slobodan and Miljić, Nenad and Mrđa, Predrag D.",
year = "2017",
abstract = "Great research efforts are invested in the quest for solutions that will increase the fuel economy of ICE-powered vehicles. The main objective of the study presented in this paper has been to analyze the ultimate fuel economy improvement potential of a transit bus by implementing a hybrid electric powertrain system utilizing an ultracapacitors-based accumulator. A simulation model of the vehicle has been calibrated by analyzing data obtained during an experiment conducted in real-world traffic conditions on a Belgrade transit bus. Apart from serving as the input for the powertrain parameters identification procedures, the acquired data also served as the basis for defining the driving cycle that will be used in numerical simulation studies. A Dynamic Programming optimization procedure has been applied on the hybrid powertrain system model in order to assess the ultimate fuel economy improvement potential. The optimization procedure has been executed for various hybrid powertrain parameters and component sizes, allowing the optimal choice of design decisions, in particular the energy accumulator size. Initial study shows that considerable fuel consumption reduction in excess of 30% can be achieved.",
publisher = "University of Niš, Faculty of Mechanical Engineering in Niš",
journal = "18th Symposium on Thermal Science and Engineering of Serbia",
title = "Dynamic Programming Study of a Hybrid Electric Powertrain System for a Transit Bus",
pages = "997-988",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4836"
}

Kitanović, M., Popović, S., Miljić, N.,& Mrđa, P. D.. (2017). Dynamic Programming Study of a Hybrid Electric Powertrain System for a Transit Bus. in 18th Symposium on Thermal Science and Engineering of Serbia
University of Niš, Faculty of Mechanical Engineering in Niš., 988-997.
https://hdl.handle.net/21.15107/rcub_machinery_4836

Kitanović M, Popović S, Miljić N, Mrđa PD. Dynamic Programming Study of a Hybrid Electric Powertrain System for a Transit Bus. in 18th Symposium on Thermal Science and Engineering of Serbia. 2017;:988-997.
https://hdl.handle.net/21.15107/rcub_machinery_4836 .

Kitanović, Marko, Popović, Slobodan, Miljić, Nenad, Mrđa, Predrag D., "Dynamic Programming Study of a Hybrid Electric Powertrain System for a Transit Bus" in 18th Symposium on Thermal Science and Engineering of Serbia (2017):988-997,
https://hdl.handle.net/21.15107/rcub_machinery_4836 .

TY  - CONF
AU  - Mrđa, Predrag D.
AU  - Miljić, Nenad
AU  - Popović, Slobodan
AU  - Kitanović, Marko
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4835
AB  - The main topic of this paper is presentation of methodology for process identification and mathematical modeling of a nonlinear dynamic system, such as an IC engine, based on the experimental data acquired during base engine calibration in terms of ignition timing. With the introduction of certain assumption, mathematical model generated in this way could be used for verification of potentially optimal look-up tables and for look-up tables smoothing. For this type of time-series modeling, nonlinear autoregressive network with exogenous inputs will be used and full-factorial sweep of limited set of neural network parameters will be analyzed. Guidelines for mathematical model formation, verification and idea of stationary-based engine calibration will be briefly outlined. Comparison between measured and modeled engine torque will be shown alongside with instructions for further research on this topic.
PB  - University of Niš, Faculty of Mechanical Engineering in Niš
C3  - 18th Symposium on Thermal Science and Engineering of Serbia
T1  - Ignition Timing Map Calibration Based on Nonlinear Dynamic System Identification Using NARX Neural Network
EP  - 693
SP  - 685
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4835
ER  - 

@conference{
author = "Mrđa, Predrag D. and Miljić, Nenad and Popović, Slobodan and Kitanović, Marko",
year = "2017",
abstract = "The main topic of this paper is presentation of methodology for process identification and mathematical modeling of a nonlinear dynamic system, such as an IC engine, based on the experimental data acquired during base engine calibration in terms of ignition timing. With the introduction of certain assumption, mathematical model generated in this way could be used for verification of potentially optimal look-up tables and for look-up tables smoothing. For this type of time-series modeling, nonlinear autoregressive network with exogenous inputs will be used and full-factorial sweep of limited set of neural network parameters will be analyzed. Guidelines for mathematical model formation, verification and idea of stationary-based engine calibration will be briefly outlined. Comparison between measured and modeled engine torque will be shown alongside with instructions for further research on this topic.",
publisher = "University of Niš, Faculty of Mechanical Engineering in Niš",
journal = "18th Symposium on Thermal Science and Engineering of Serbia",
title = "Ignition Timing Map Calibration Based on Nonlinear Dynamic System Identification Using NARX Neural Network",
pages = "693-685",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4835"
}

Mrđa, P. D., Miljić, N., Popović, S.,& Kitanović, M.. (2017). Ignition Timing Map Calibration Based on Nonlinear Dynamic System Identification Using NARX Neural Network. in 18th Symposium on Thermal Science and Engineering of Serbia
University of Niš, Faculty of Mechanical Engineering in Niš., 685-693.
https://hdl.handle.net/21.15107/rcub_machinery_4835

Mrđa PD, Miljić N, Popović S, Kitanović M. Ignition Timing Map Calibration Based on Nonlinear Dynamic System Identification Using NARX Neural Network. in 18th Symposium on Thermal Science and Engineering of Serbia. 2017;:685-693.
https://hdl.handle.net/21.15107/rcub_machinery_4835 .

Mrđa, Predrag D., Miljić, Nenad, Popović, Slobodan, Kitanović, Marko, "Ignition Timing Map Calibration Based on Nonlinear Dynamic System Identification Using NARX Neural Network" in 18th Symposium on Thermal Science and Engineering of Serbia (2017):685-693,
https://hdl.handle.net/21.15107/rcub_machinery_4835 .

TY  - JOUR
AU  - Jovanović, Stevan
AU  - Knežević, Dragan
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6075
AB  - This paper includes comparative analysis of the environmental, energetic, and financial costs of different bus propulsion, possibly applied on the public transport
in the city of Belgrade. It considers the modern diesel bus, the trolleybus, the natural gas bus with the spark ignition engine, the electric bus using LiFePO4 battery, and the electric bus with ultra-capacitor. The results are presented according to the real data and the real electro-energetic situation in Serbia, with the
dominantly used lignite coal as primary fuel. This model gives the exact exhaust
emission of electric vehicles at the thermal power plant, enables its comparison
to the internal combustion engine vehicles. The result in analysis shows that the
natural gas bus is the most cost efficient in economical way with overall exploitation price of $87 per 100 km. The trolleybus is more economical then the natural
gas powered bus only at high departures rate, higher than 230 per workday.
PB  - Thermal Science
T2  - Thermal Science
T1  - Theoretical analysis of the 	cumulative costs of different diesel bus alternatives for a public transport in the city of Belgrade
EP  - 681
IS  - 1B
SP  - 669
VL  - 21
DO  - 10.2298/TSCI161013305J
ER  - 

@article{
author = "Jovanović, Stevan and Knežević, Dragan",
year = "2017",
abstract = "This paper includes comparative analysis of the environmental, energetic, and financial costs of different bus propulsion, possibly applied on the public transport
in the city of Belgrade. It considers the modern diesel bus, the trolleybus, the natural gas bus with the spark ignition engine, the electric bus using LiFePO4 battery, and the electric bus with ultra-capacitor. The results are presented according to the real data and the real electro-energetic situation in Serbia, with the
dominantly used lignite coal as primary fuel. This model gives the exact exhaust
emission of electric vehicles at the thermal power plant, enables its comparison
to the internal combustion engine vehicles. The result in analysis shows that the
natural gas bus is the most cost efficient in economical way with overall exploitation price of $87 per 100 km. The trolleybus is more economical then the natural
gas powered bus only at high departures rate, higher than 230 per workday.",
publisher = "Thermal Science",
journal = "Thermal Science",
title = "Theoretical analysis of the 	cumulative costs of different diesel bus alternatives for a public transport in the city of Belgrade",
pages = "681-669",
number = "1B",
volume = "21",
doi = "10.2298/TSCI161013305J"
}

Jovanović, S.,& Knežević, D.. (2017). Theoretical analysis of the 	cumulative costs of different diesel bus alternatives for a public transport in the city of Belgrade. in Thermal Science
Thermal Science., 21(1B), 669-681.
https://doi.org/10.2298/TSCI161013305J

Jovanović S, Knežević D. Theoretical analysis of the 	cumulative costs of different diesel bus alternatives for a public transport in the city of Belgrade. in Thermal Science. 2017;21(1B):669-681.
doi:10.2298/TSCI161013305J .

Jovanović, Stevan, Knežević, Dragan, "Theoretical analysis of the 	cumulative costs of different diesel bus alternatives for a public transport in the city of Belgrade" in Thermal Science, 21, no. 1B (2017):669-681,
https://doi.org/10.2298/TSCI161013305J . .

TY  - THES
AU  - Knežević, Dragan
PY  - 2015
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=2543
UR  - https://nardus.mpn.gov.rs/handle/123456789/4904
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:10596/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=514564771
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/30
AB  - U ovom radu je proucavana mogucnost primene alternativnih biogoriva za pogon dizel motora sa direktnim ubrizgavanjem, kao i uticaj ovih goriva na proces sagorevanja i izduvnu emisiju ovog tipa motora. Kao alternativna biogoriva korišceni su metilestri ulja uljane repice, sojinog ulja i otpadnog jestivog palminog ulja. Ova biogoriva su korišcena kao cista (100%) ili u smeši sa standardnim dizel gorivom fosilnog porekla u odnosu 50:50 i u nekim uslovima i u smeši 25%, 50%, 75%. Takode, istražena je i mogucnost primene cistog jestivog rafinisanog suncokretovog ulja bez dodatne obrade ulja pre mešanja sa dizel gorivom u odnosu 50:50. Pored integralnih karakteristika motora: snage, obrtnog momenta, potrošnje usisnog vazduha i goriva, analize izduvnih gasova, protoka recirkulacije izduvnih gasova, snimljeni su tokovi pritiska u cilindru motora i vodu visokog pritiska sistema unrizgavanja i izdizanje igle brizgaca, korišcenjem akvizicionog sistema visokih performansi. Na bazi ovih velicina razvijen je i primenjen model za odredivanje parametara procesa sagorevanja. Koristeci ovaj postupak odredene su sledece karakteristike sagorevanja pri radu sa razlicitim biogorivima i pri razlicitim uslovima: vrednosti maksimalnog pritiska u cilindru motora kao i njihovi položaji u odnosu na SMT, zakoni oslobadanja toplote, periodi zakašnjenja upaljenja, trajanje sagorevanja i razvijene kolicine energije po fazama procesa sagorevanja. Takode je izvršeno ispitivanje uticaja svih korišcenih biogoriva na izduvnu emisiju motora. Istraživanja su vršena u usisnoj i natpunjenoj varijanti motora. Takode je detaljno istražen i uticaj recirkulacije izduvnih gasova na proces sagorevanja i izduvnu emisiju i to u obe varijante motora i sa svim korišcenim biogorivima. Poseban deo istraživanja se odnosio na mogucnost aplikacije komore za sagorevanje originalne konstrukcije sa smanjenim odavanjem toplote i uticaj ovog sistema sagorevanja na tok procesa sagorevanja i sastav izduvnih gasova. Dobijeni rezultati u okviru ovog rada se mogu koristiti pri optimizaciji radnog ciklusa dizel motora sa direktnim ubrizgavanjem u cilju postizanja povoljnije ekonomicnosti i izduvne emisije, pri pogonu biogorivima sa i bez recirkulacije izduvnih gasova.
AB  - This dissertation presents the results of biofuels application research in direct injection diesel engine, as well as the influence of these fuels on engine combustion process and exhaust emissions. The methyl esters of rape oil, soya oil, and waste cooking palm oil were used as alternative fuels. These biofuels were used as net fuels (100%) as well as mixed with standard diesel fuel in the ratio 50:50 and in several cases 7%, 25%, 50% and 75%. Also, the research included the experiments with pure edible sunflower oil mixed with diesel fuel in the ratio 50:50. Besides engine integral characteristic: power and torque output, intake air and fuel consumption, exhaust gas analysis, exhaust gases recirculation, the traces of incylinder pressure, fuel injection pressure and injector needle lift were recorded using high speed data acquisition system. On the basis of these data the method of combustion process parameters evaluation was developed and applied. Using this procedure for different biofuels and at different operating conditions, the following combustion parameters were determined: maximum cylinder pressure and temperature and its their position relative to TDC, heat release and the rate of heat release, ignition delay, combustion duration and the amount of heat released in certain periods of combustion process. The research was carried out under the naturally aspirated and supercharged engine conditions. The impact of exhaust gas recirculation on combustion process and exhaust emissions was studied in all operating conditions and with all biofuels. A special part of the research related to the possibilities of application of the specially designed combustion chamber with reduced heat transfer from the gases to the chamber walls. The influence of this system on combustion characteristics and exhaust emissions was studied. The results obtained in this research can be used for optimisation of diesel engine working cycle in order to achieve better fuel economy and exhaust emissions, under the conditions of different biofuels application with and without exhaust gas recirculation.
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Istraživanje procesa sagorevanja u dizel motoru pri radu sa biogorivima i recirkulacijom izduvnih gasova
T1  - The research of combustion process of diesel engine using biofuels and exhaust gas recirculation
UR  - https://hdl.handle.net/21.15107/rcub_nardus_4904
ER  - 

@phdthesis{
author = "Knežević, Dragan",
year = "2015",
abstract = "U ovom radu je proucavana mogucnost primene alternativnih biogoriva za pogon dizel motora sa direktnim ubrizgavanjem, kao i uticaj ovih goriva na proces sagorevanja i izduvnu emisiju ovog tipa motora. Kao alternativna biogoriva korišceni su metilestri ulja uljane repice, sojinog ulja i otpadnog jestivog palminog ulja. Ova biogoriva su korišcena kao cista (100%) ili u smeši sa standardnim dizel gorivom fosilnog porekla u odnosu 50:50 i u nekim uslovima i u smeši 25%, 50%, 75%. Takode, istražena je i mogucnost primene cistog jestivog rafinisanog suncokretovog ulja bez dodatne obrade ulja pre mešanja sa dizel gorivom u odnosu 50:50. Pored integralnih karakteristika motora: snage, obrtnog momenta, potrošnje usisnog vazduha i goriva, analize izduvnih gasova, protoka recirkulacije izduvnih gasova, snimljeni su tokovi pritiska u cilindru motora i vodu visokog pritiska sistema unrizgavanja i izdizanje igle brizgaca, korišcenjem akvizicionog sistema visokih performansi. Na bazi ovih velicina razvijen je i primenjen model za odredivanje parametara procesa sagorevanja. Koristeci ovaj postupak odredene su sledece karakteristike sagorevanja pri radu sa razlicitim biogorivima i pri razlicitim uslovima: vrednosti maksimalnog pritiska u cilindru motora kao i njihovi položaji u odnosu na SMT, zakoni oslobadanja toplote, periodi zakašnjenja upaljenja, trajanje sagorevanja i razvijene kolicine energije po fazama procesa sagorevanja. Takode je izvršeno ispitivanje uticaja svih korišcenih biogoriva na izduvnu emisiju motora. Istraživanja su vršena u usisnoj i natpunjenoj varijanti motora. Takode je detaljno istražen i uticaj recirkulacije izduvnih gasova na proces sagorevanja i izduvnu emisiju i to u obe varijante motora i sa svim korišcenim biogorivima. Poseban deo istraživanja se odnosio na mogucnost aplikacije komore za sagorevanje originalne konstrukcije sa smanjenim odavanjem toplote i uticaj ovog sistema sagorevanja na tok procesa sagorevanja i sastav izduvnih gasova. Dobijeni rezultati u okviru ovog rada se mogu koristiti pri optimizaciji radnog ciklusa dizel motora sa direktnim ubrizgavanjem u cilju postizanja povoljnije ekonomicnosti i izduvne emisije, pri pogonu biogorivima sa i bez recirkulacije izduvnih gasova., This dissertation presents the results of biofuels application research in direct injection diesel engine, as well as the influence of these fuels on engine combustion process and exhaust emissions. The methyl esters of rape oil, soya oil, and waste cooking palm oil were used as alternative fuels. These biofuels were used as net fuels (100%) as well as mixed with standard diesel fuel in the ratio 50:50 and in several cases 7%, 25%, 50% and 75%. Also, the research included the experiments with pure edible sunflower oil mixed with diesel fuel in the ratio 50:50. Besides engine integral characteristic: power and torque output, intake air and fuel consumption, exhaust gas analysis, exhaust gases recirculation, the traces of incylinder pressure, fuel injection pressure and injector needle lift were recorded using high speed data acquisition system. On the basis of these data the method of combustion process parameters evaluation was developed and applied. Using this procedure for different biofuels and at different operating conditions, the following combustion parameters were determined: maximum cylinder pressure and temperature and its their position relative to TDC, heat release and the rate of heat release, ignition delay, combustion duration and the amount of heat released in certain periods of combustion process. The research was carried out under the naturally aspirated and supercharged engine conditions. The impact of exhaust gas recirculation on combustion process and exhaust emissions was studied in all operating conditions and with all biofuels. A special part of the research related to the possibilities of application of the specially designed combustion chamber with reduced heat transfer from the gases to the chamber walls. The influence of this system on combustion characteristics and exhaust emissions was studied. The results obtained in this research can be used for optimisation of diesel engine working cycle in order to achieve better fuel economy and exhaust emissions, under the conditions of different biofuels application with and without exhaust gas recirculation.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Istraživanje procesa sagorevanja u dizel motoru pri radu sa biogorivima i recirkulacijom izduvnih gasova, The research of combustion process of diesel engine using biofuels and exhaust gas recirculation",
url = "https://hdl.handle.net/21.15107/rcub_nardus_4904"
}

Knežević, D.. (2015). Istraživanje procesa sagorevanja u dizel motoru pri radu sa biogorivima i recirkulacijom izduvnih gasova. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_4904

Knežević D. Istraživanje procesa sagorevanja u dizel motoru pri radu sa biogorivima i recirkulacijom izduvnih gasova. 2015;.
https://hdl.handle.net/21.15107/rcub_nardus_4904 .

Knežević, Dragan, "Istraživanje procesa sagorevanja u dizel motoru pri radu sa biogorivima i recirkulacijom izduvnih gasova" (2015),
https://hdl.handle.net/21.15107/rcub_nardus_4904 .

TY  - CONF
AU  - Đinić, Stefan
AU  - Petrović, Vladimir
AU  - Mrđa, Predrag D.
AU  - Popović, Slobodan
AU  - Miljić, Nenad
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4782
AB  - The vehicle test procedure provides a strict guidance regarding the conditions of dynamometer tests and road load, gear shifting, total car weight, fuel quality, ambient temperature, and tire selection and pressure. Designed as a tool for testing vehicles fuel consumption and emission these tests are usually conducted on expensive and infrastructuraly demanding road dynamometers. This paper presents a method for conducting tests like NEDC or WLTC on an automated engine test bed equipped with high dynamic dynamometer in a manner which provides very similar testing environment. Particularly from the educational point of view, this approach, combining simple mathematical modelling, automated engine test bed and software testing and measurement environment like AVL Cameo, provides numerous possibilities in demonstrating engine operation in a virtual but, by performance, fully realized vehicle.
PB  - University of Niš, Faculty of Mechanical Engineering
C3  - 17th Symposium on Thermal Science and Engineering of Serbia
T1  - Light Vehicles Test Procedures on an Automated Engine Test Bed
EP  - 1061
SP  - 1056
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4782
ER  - 

@conference{
author = "Đinić, Stefan and Petrović, Vladimir and Mrđa, Predrag D. and Popović, Slobodan and Miljić, Nenad",
year = "2015",
abstract = "The vehicle test procedure provides a strict guidance regarding the conditions of dynamometer tests and road load, gear shifting, total car weight, fuel quality, ambient temperature, and tire selection and pressure. Designed as a tool for testing vehicles fuel consumption and emission these tests are usually conducted on expensive and infrastructuraly demanding road dynamometers. This paper presents a method for conducting tests like NEDC or WLTC on an automated engine test bed equipped with high dynamic dynamometer in a manner which provides very similar testing environment. Particularly from the educational point of view, this approach, combining simple mathematical modelling, automated engine test bed and software testing and measurement environment like AVL Cameo, provides numerous possibilities in demonstrating engine operation in a virtual but, by performance, fully realized vehicle.",
publisher = "University of Niš, Faculty of Mechanical Engineering",
journal = "17th Symposium on Thermal Science and Engineering of Serbia",
title = "Light Vehicles Test Procedures on an Automated Engine Test Bed",
pages = "1061-1056",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4782"
}

Đinić, S., Petrović, V., Mrđa, P. D., Popović, S.,& Miljić, N.. (2015). Light Vehicles Test Procedures on an Automated Engine Test Bed. in 17th Symposium on Thermal Science and Engineering of Serbia
University of Niš, Faculty of Mechanical Engineering., 1056-1061.
https://hdl.handle.net/21.15107/rcub_machinery_4782

Đinić S, Petrović V, Mrđa PD, Popović S, Miljić N. Light Vehicles Test Procedures on an Automated Engine Test Bed. in 17th Symposium on Thermal Science and Engineering of Serbia. 2015;:1056-1061.
https://hdl.handle.net/21.15107/rcub_machinery_4782 .

Đinić, Stefan, Petrović, Vladimir, Mrđa, Predrag D., Popović, Slobodan, Miljić, Nenad, "Light Vehicles Test Procedures on an Automated Engine Test Bed" in 17th Symposium on Thermal Science and Engineering of Serbia (2015):1056-1061,
https://hdl.handle.net/21.15107/rcub_machinery_4782 .

TY  - CONF
AU  - Miljić, Nenad
AU  - Popović, Slobodan
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6325
AB  - In-cylinder  pressure  analysis  provides  valuable  information  on  the  combustion  process  and  stands   as   an   invaluable   tool   in   the   internal   combustion   engine   research   &   development.   Its   implementation in a combustion control algorithms appears as a promising solution for attaining optimal combustion  control  in  IC  Engines.  Beside  direct,  pressure  sensor  based  measurement  data  evaluation  approach, there are various attempts to introduce indirect model based measurements which will provide comparable results. This paper deals with the potentials of Local Model Networks and their application in a virtual combustion sensors. High speed processing capabilities, acceptable accuracy and compactness of Local  Model  Networks  based  models  make  them  good  candidates  to  become  a  core  component  of  the  future  combustion  control  algorithms.  A  local  linear  model  (Lolimot)  and  hierarchical  local  model  (Hilomot) are compared in order to gain some conclusions on optimal network topology, best suited for a job  of  extracting  crucial  combustion  features.  Evaluation,  testing  and  validation  of  presented  virtual  sensors is conducted on an extensive set of IC engine data.
PB  - University of Niš, Faculty of Mechanical Engineering in Niš
C3  - Proceedings of the 17th Symposium on Thermal Science and Engineering of Serbia
T1  - Model Networks as Virtual Combustion Sensors in IC Engines
EP  - 1043
SP  - 1038
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6325
ER  - 

@conference{
author = "Miljić, Nenad and Popović, Slobodan",
year = "2015",
abstract = "In-cylinder  pressure  analysis  provides  valuable  information  on  the  combustion  process  and  stands   as   an   invaluable   tool   in   the   internal   combustion   engine   research   &   development.   Its   implementation in a combustion control algorithms appears as a promising solution for attaining optimal combustion  control  in  IC  Engines.  Beside  direct,  pressure  sensor  based  measurement  data  evaluation  approach, there are various attempts to introduce indirect model based measurements which will provide comparable results. This paper deals with the potentials of Local Model Networks and their application in a virtual combustion sensors. High speed processing capabilities, acceptable accuracy and compactness of Local  Model  Networks  based  models  make  them  good  candidates  to  become  a  core  component  of  the  future  combustion  control  algorithms.  A  local  linear  model  (Lolimot)  and  hierarchical  local  model  (Hilomot) are compared in order to gain some conclusions on optimal network topology, best suited for a job  of  extracting  crucial  combustion  features.  Evaluation,  testing  and  validation  of  presented  virtual  sensors is conducted on an extensive set of IC engine data.",
publisher = "University of Niš, Faculty of Mechanical Engineering in Niš",
journal = "Proceedings of the 17th Symposium on Thermal Science and Engineering of Serbia",
title = "Model Networks as Virtual Combustion Sensors in IC Engines",
pages = "1043-1038",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6325"
}

Miljić, N.,& Popović, S.. (2015). Model Networks as Virtual Combustion Sensors in IC Engines. in Proceedings of the 17th Symposium on Thermal Science and Engineering of Serbia
University of Niš, Faculty of Mechanical Engineering in Niš., 1038-1043.
https://hdl.handle.net/21.15107/rcub_machinery_6325

Miljić N, Popović S. Model Networks as Virtual Combustion Sensors in IC Engines. in Proceedings of the 17th Symposium on Thermal Science and Engineering of Serbia. 2015;:1038-1043.
https://hdl.handle.net/21.15107/rcub_machinery_6325 .

Miljić, Nenad, Popović, Slobodan, "Model Networks as Virtual Combustion Sensors in IC Engines" in Proceedings of the 17th Symposium on Thermal Science and Engineering of Serbia (2015):1038-1043,
https://hdl.handle.net/21.15107/rcub_machinery_6325 .

TY  - CONF
AU  - Petrović, Vladimir
AU  - Đinić, Stefan
AU  - Kitanović, Marko
AU  - Miljić, Nenad
AU  - Popović, Slobodan
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4778
AB  - State of the art engine test bed system is a highly complex and demanding testing environment. Built as a tool for providing a versatile test environment for modern IC engines, this system requires automation system capable to establish real-time data and commands exchange between test bed various components. The establishing of engine test bed automation system is particularly challenging in combining software and hardware components from different manufacturers. This paper presents methods and solutions used in establishing such automation system in the ICED Lab at the FME, University of Belgrade by integrating control system of AC asynchronous machine, digital acquisition and measurement system and AVL Cameo software within the NI Labview environment.
PB  - University of Niš, Faculty of Mechanical Engineering
C3  - 17th Symposium on Thermal Science and Engineering of Serbia
T1  - Software and Hardware Challenges of Engine Test Bed Automation – Example of FME ICED Lab
EP  - 1065
SP  - 1062
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4778
ER  - 

@conference{
author = "Petrović, Vladimir and Đinić, Stefan and Kitanović, Marko and Miljić, Nenad and Popović, Slobodan",
year = "2015",
abstract = "State of the art engine test bed system is a highly complex and demanding testing environment. Built as a tool for providing a versatile test environment for modern IC engines, this system requires automation system capable to establish real-time data and commands exchange between test bed various components. The establishing of engine test bed automation system is particularly challenging in combining software and hardware components from different manufacturers. This paper presents methods and solutions used in establishing such automation system in the ICED Lab at the FME, University of Belgrade by integrating control system of AC asynchronous machine, digital acquisition and measurement system and AVL Cameo software within the NI Labview environment.",
publisher = "University of Niš, Faculty of Mechanical Engineering",
journal = "17th Symposium on Thermal Science and Engineering of Serbia",
title = "Software and Hardware Challenges of Engine Test Bed Automation – Example of FME ICED Lab",
pages = "1065-1062",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4778"
}

Petrović, V., Đinić, S., Kitanović, M., Miljić, N.,& Popović, S.. (2015). Software and Hardware Challenges of Engine Test Bed Automation – Example of FME ICED Lab. in 17th Symposium on Thermal Science and Engineering of Serbia
University of Niš, Faculty of Mechanical Engineering., 1062-1065.
https://hdl.handle.net/21.15107/rcub_machinery_4778

Petrović V, Đinić S, Kitanović M, Miljić N, Popović S. Software and Hardware Challenges of Engine Test Bed Automation – Example of FME ICED Lab. in 17th Symposium on Thermal Science and Engineering of Serbia. 2015;:1062-1065.
https://hdl.handle.net/21.15107/rcub_machinery_4778 .

Petrović, Vladimir, Đinić, Stefan, Kitanović, Marko, Miljić, Nenad, Popović, Slobodan, "Software and Hardware Challenges of Engine Test Bed Automation – Example of FME ICED Lab" in 17th Symposium on Thermal Science and Engineering of Serbia (2015):1062-1065,
https://hdl.handle.net/21.15107/rcub_machinery_4778 .

TY  - JOUR
AU  - Miljić, Nenad
AU  - Popović, Slobodan
AU  - Kitanović, Marko
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4770
AB  - Engine speed signal contains valuable and rich content information about the engine working process. Measurement of the engine speed is usually carried out by sensor wheels mounted on the crankshaft. Measurement errors are mostly influenced by geometric tolerances of the engine speed sensor wheel as well as by its radial run-out. In order to avoid the occurrence of this systemic deviation, in the lab and highest accuracy engine speed measurements are usually conducted by means of incremental encoders, radially and axially fixed to the crankshaft with the anti-twist safeguard toward the crankcase. This paper shows how this type of engine speed measurement, which is considered to be the most accurate, is prone to systematic errors as well. The influence of the kinematic parameters of the encoder - crankcase linkage, on the error occurrence is discussed as well as suggested methods for systematic deviation parameters identification and engine crankshaft angular speed error compensation.
PB  - University of Kragujevac, Faculty of Engineering
T2  - Mobility & Vehicle Mechanics
T1  - Engine Crankshaft Speed Measurement Error Compensation
EP  - 51
IS  - 3
SP  - 41
VL  - 41
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4770
ER  - 

@article{
author = "Miljić, Nenad and Popović, Slobodan and Kitanović, Marko",
year = "2015",
abstract = "Engine speed signal contains valuable and rich content information about the engine working process. Measurement of the engine speed is usually carried out by sensor wheels mounted on the crankshaft. Measurement errors are mostly influenced by geometric tolerances of the engine speed sensor wheel as well as by its radial run-out. In order to avoid the occurrence of this systemic deviation, in the lab and highest accuracy engine speed measurements are usually conducted by means of incremental encoders, radially and axially fixed to the crankshaft with the anti-twist safeguard toward the crankcase. This paper shows how this type of engine speed measurement, which is considered to be the most accurate, is prone to systematic errors as well. The influence of the kinematic parameters of the encoder - crankcase linkage, on the error occurrence is discussed as well as suggested methods for systematic deviation parameters identification and engine crankshaft angular speed error compensation.",
publisher = "University of Kragujevac, Faculty of Engineering",
journal = "Mobility & Vehicle Mechanics",
title = "Engine Crankshaft Speed Measurement Error Compensation",
pages = "51-41",
number = "3",
volume = "41",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4770"
}

Miljić, N., Popović, S.,& Kitanović, M.. (2015). Engine Crankshaft Speed Measurement Error Compensation. in Mobility & Vehicle Mechanics
University of Kragujevac, Faculty of Engineering., 41(3), 41-51.
https://hdl.handle.net/21.15107/rcub_machinery_4770

Miljić N, Popović S, Kitanović M. Engine Crankshaft Speed Measurement Error Compensation. in Mobility & Vehicle Mechanics. 2015;41(3):41-51.
https://hdl.handle.net/21.15107/rcub_machinery_4770 .

Miljić, Nenad, Popović, Slobodan, Kitanović, Marko, "Engine Crankshaft Speed Measurement Error Compensation" in Mobility & Vehicle Mechanics, 41, no. 3 (2015):41-51,
https://hdl.handle.net/21.15107/rcub_machinery_4770 .