TY  - CONF
AU  - Božić, Ivan
AU  - Petrović, Vladimir
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6474
AB  - The revitalization of HPP Đerdap 1 aimed at increasing the total installed power of the hydropower plant with the achievement of the increased energy efficiency of the aggregates. The developmental model tests carried out by the equipment supplier enhanced the constructive elements of revitalized Kaplan turbines in relation to existing turbines that had been in long-term exploitation. The results of that test, but also warranted and acceptance-comparative model tests in highly-qualified laboratories for hydraulic turbines, confirmed the improvement of energy parameters. Recalculated results of model tests were used to determine optimal prototype operating parameters, i.e. preliminary determination of optimal combinatory dependence upon which the revitalized turbine will be exploited. After the retrofitting and installation of the prototype with a new runner as well as precommisioning and acceptance tests on turbine equipment and governing systems, index tests of the revitalized Kaplan turbine were performed. The index tests were carried out at three net drops with the aim of checking combinatory relations. By analyzing measuring results, final corrections were made to these relations in order to detemine new optimal ones, thus confirming warranty turbine parameters. The methodology of the performed Kaplan turbine index tests and the analysis of the obtained results are given in the paper. Comparative analyses of the previously implemented and newly established combinatory dependences and the conclusions reached show the usefulness of the index tests on revitalized double-regulated hydraulic turbines in order to optimize their operation, as well as to increase the energy efficiency of the entire hydropower plant.
C3  - Full Papers Proceeding of International Conference „Power Plants 2018“, 5-8. November 2018, Zlatibor Serbia
T1  - Index tests of revitalized Kaplan turbine with the aim of optimising the hydro-aggregate
EP  - 484
IS  - E2018-040
SP  - 477
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6474
ER  - 

@conference{
author = "Božić, Ivan and Petrović, Vladimir",
year = "2018",
abstract = "The revitalization of HPP Đerdap 1 aimed at increasing the total installed power of the hydropower plant with the achievement of the increased energy efficiency of the aggregates. The developmental model tests carried out by the equipment supplier enhanced the constructive elements of revitalized Kaplan turbines in relation to existing turbines that had been in long-term exploitation. The results of that test, but also warranted and acceptance-comparative model tests in highly-qualified laboratories for hydraulic turbines, confirmed the improvement of energy parameters. Recalculated results of model tests were used to determine optimal prototype operating parameters, i.e. preliminary determination of optimal combinatory dependence upon which the revitalized turbine will be exploited. After the retrofitting and installation of the prototype with a new runner as well as precommisioning and acceptance tests on turbine equipment and governing systems, index tests of the revitalized Kaplan turbine were performed. The index tests were carried out at three net drops with the aim of checking combinatory relations. By analyzing measuring results, final corrections were made to these relations in order to detemine new optimal ones, thus confirming warranty turbine parameters. The methodology of the performed Kaplan turbine index tests and the analysis of the obtained results are given in the paper. Comparative analyses of the previously implemented and newly established combinatory dependences and the conclusions reached show the usefulness of the index tests on revitalized double-regulated hydraulic turbines in order to optimize their operation, as well as to increase the energy efficiency of the entire hydropower plant.",
journal = "Full Papers Proceeding of International Conference „Power Plants 2018“, 5-8. November 2018, Zlatibor Serbia",
title = "Index tests of revitalized Kaplan turbine with the aim of optimising the hydro-aggregate",
pages = "484-477",
number = "E2018-040",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6474"
}

Božić, I.,& Petrović, V.. (2018). Index tests of revitalized Kaplan turbine with the aim of optimising the hydro-aggregate. in Full Papers Proceeding of International Conference „Power Plants 2018“, 5-8. November 2018, Zlatibor Serbia(E2018-040), 477-484.
https://hdl.handle.net/21.15107/rcub_machinery_6474

Božić I, Petrović V. Index tests of revitalized Kaplan turbine with the aim of optimising the hydro-aggregate. in Full Papers Proceeding of International Conference „Power Plants 2018“, 5-8. November 2018, Zlatibor Serbia. 2018;(E2018-040):477-484.
https://hdl.handle.net/21.15107/rcub_machinery_6474 .

Božić, Ivan, Petrović, Vladimir, "Index tests of revitalized Kaplan turbine with the aim of optimising the hydro-aggregate" in Full Papers Proceeding of International Conference „Power Plants 2018“, 5-8. November 2018, Zlatibor Serbia, no. E2018-040 (2018):477-484,
https://hdl.handle.net/21.15107/rcub_machinery_6474 .

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  - JOUR
AU  - Mrđa, Predrag D.
AU  - Petrović, Vladimir
AU  - Đinić, Stefan
AU  - Kitanović, Marko
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4772
AB  - After several years of research and development of Formula Student’s air mass flow restricted racing engine at the Internal Combustion Engines Department of the Faculty of Mechanical Engineering, University of Belgrade, the design process of a new intake manifold for the 2014 competition season was set off. Through several seasons, the intake manifolds of the YAMAHA YZF-R6 high performance engine evolved from a dual volume, into a single volume concept and finally to the continuously variable intake manifold (CVIM) design. Comparative analysis of data obtained during in-laboratory engine testing and data logged from ECU during the races gave some guidelines in the design of CVIM. The main goal of this research is increasing the number of engine operating points with resonant supercharging. The Ricardo WAVE engine mathematical model is improved and particular attention is dedicated to the approximation of the adopted CVIM concept using Helmholtz Resonance Theory. This paper describes the correlation between optimal intake runner length and manifold volume over engine speed at wide open throttle as well as their influence on volumetric efficiency and engine effective parameters.
PB  - University of Kragujevac, Faculty of Engineering
T2  - Mobility & Vehicle Mechanics
T1  - Development Of Continuously Variable Intake Manifold For Formula Student Racing Engine
EP  - 38
IS  - 3
SP  - 21
VL  - 41
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4772
ER  - 

@article{
author = "Mrđa, Predrag D. and Petrović, Vladimir and Đinić, Stefan and Kitanović, Marko",
year = "2015",
abstract = "After several years of research and development of Formula Student’s air mass flow restricted racing engine at the Internal Combustion Engines Department of the Faculty of Mechanical Engineering, University of Belgrade, the design process of a new intake manifold for the 2014 competition season was set off. Through several seasons, the intake manifolds of the YAMAHA YZF-R6 high performance engine evolved from a dual volume, into a single volume concept and finally to the continuously variable intake manifold (CVIM) design. Comparative analysis of data obtained during in-laboratory engine testing and data logged from ECU during the races gave some guidelines in the design of CVIM. The main goal of this research is increasing the number of engine operating points with resonant supercharging. The Ricardo WAVE engine mathematical model is improved and particular attention is dedicated to the approximation of the adopted CVIM concept using Helmholtz Resonance Theory. This paper describes the correlation between optimal intake runner length and manifold volume over engine speed at wide open throttle as well as their influence on volumetric efficiency and engine effective parameters.",
publisher = "University of Kragujevac, Faculty of Engineering",
journal = "Mobility & Vehicle Mechanics",
title = "Development Of Continuously Variable Intake Manifold For Formula Student Racing Engine",
pages = "38-21",
number = "3",
volume = "41",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4772"
}

Mrđa, P. D., Petrović, V., Đinić, S.,& Kitanović, M.. (2015). Development Of Continuously Variable Intake Manifold For Formula Student Racing Engine. in Mobility & Vehicle Mechanics
University of Kragujevac, Faculty of Engineering., 41(3), 21-38.
https://hdl.handle.net/21.15107/rcub_machinery_4772

Mrđa PD, Petrović V, Đinić S, Kitanović M. Development Of Continuously Variable Intake Manifold For Formula Student Racing Engine. in Mobility & Vehicle Mechanics. 2015;41(3):21-38.
https://hdl.handle.net/21.15107/rcub_machinery_4772 .

Mrđa, Predrag D., Petrović, Vladimir, Đinić, Stefan, Kitanović, Marko, "Development Of Continuously Variable Intake Manifold For Formula Student Racing Engine" in Mobility & Vehicle Mechanics, 41, no. 3 (2015):21-38,
https://hdl.handle.net/21.15107/rcub_machinery_4772 .

TY  - CONF
AU  - Mrđa, Predrag D.
AU  - Petrović, Vladimir
AU  - Đinić, Stefan
AU  - Kitanović, Marko
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4743
AB  - After several years of research and development of Formula Student’s air mass flow restricted racing engine at the Internal Combustion Engines Department of the Faculty of Mechanical Engineering, University of Belgrade, the design process of a new intake manifold for the 2014 competition season was set off. Through several seasons, the intake manifolds of the YAMAHA YZF-R6 high performance engine evolved from a dual volume, into a single volume concept and finally to the continuously variable intake manifold (CVIM) design. Comparative analysis of data obtained during in-laboratory engine testing and data logged from ECU during the races gave some guidelines in the design of CVIM. The main goal of this research is increasing the number of engine operating points with resonant supercharging. The Ricardo WAVE engine mathematical model is improved and particular attention is dedicated to the approximation of the adopted CVIM concept using Helmholtz Resonance Theory. This paper describes the correlation between optimal intake runner length and manifold volume over engine speed at wide open throttle as well as their influence on volumetric efficiency and engine effective parameters.
PB  - Faculty of Engineering, University of Kragujevac
C3  - International Congress Motor Vehicles & Motors 2014
T1  - Development of Continuously Variable Intake Manifold for Formula Student Racing Engine
EP  - 339
SP  - 326
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4743
ER  - 

@conference{
author = "Mrđa, Predrag D. and Petrović, Vladimir and Đinić, Stefan and Kitanović, Marko",
year = "2014",
abstract = "After several years of research and development of Formula Student’s air mass flow restricted racing engine at the Internal Combustion Engines Department of the Faculty of Mechanical Engineering, University of Belgrade, the design process of a new intake manifold for the 2014 competition season was set off. Through several seasons, the intake manifolds of the YAMAHA YZF-R6 high performance engine evolved from a dual volume, into a single volume concept and finally to the continuously variable intake manifold (CVIM) design. Comparative analysis of data obtained during in-laboratory engine testing and data logged from ECU during the races gave some guidelines in the design of CVIM. The main goal of this research is increasing the number of engine operating points with resonant supercharging. The Ricardo WAVE engine mathematical model is improved and particular attention is dedicated to the approximation of the adopted CVIM concept using Helmholtz Resonance Theory. This paper describes the correlation between optimal intake runner length and manifold volume over engine speed at wide open throttle as well as their influence on volumetric efficiency and engine effective parameters.",
publisher = "Faculty of Engineering, University of Kragujevac",
journal = "International Congress Motor Vehicles & Motors 2014",
title = "Development of Continuously Variable Intake Manifold for Formula Student Racing Engine",
pages = "339-326",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4743"
}

Mrđa, P. D., Petrović, V., Đinić, S.,& Kitanović, M.. (2014). Development of Continuously Variable Intake Manifold for Formula Student Racing Engine. in International Congress Motor Vehicles & Motors 2014
Faculty of Engineering, University of Kragujevac., 326-339.
https://hdl.handle.net/21.15107/rcub_machinery_4743

Mrđa PD, Petrović V, Đinić S, Kitanović M. Development of Continuously Variable Intake Manifold for Formula Student Racing Engine. in International Congress Motor Vehicles & Motors 2014. 2014;:326-339.
https://hdl.handle.net/21.15107/rcub_machinery_4743 .

Mrđa, Predrag D., Petrović, Vladimir, Đinić, Stefan, Kitanović, Marko, "Development of Continuously Variable Intake Manifold for Formula Student Racing Engine" in International Congress Motor Vehicles & Motors 2014 (2014):326-339,
https://hdl.handle.net/21.15107/rcub_machinery_4743 .

TY  - CONF
AU  - Mrđa, Predrag D.
AU  - Miljić, Nenad
AU  - Popović, Slobodan
AU  - Kitanović, Marko
AU  - Petrović, Vladimir
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4582
AB  - Hybridization, in particular Hydraulic Hybrid Technology (HHT), is offering significant powertrain efficiency breakthroughs in near and mid-term. A data acquisition on a transit bus has been performed to assess the potentials for fuel consumption reduction based on deceleration energy calculations. Initial study suggests fuel economy improvements of 20 % are possible. Additional investigation was carried out to quantify fuel savings that would be achieved by implementing a start-stop system. Significant fuel consumption occurs during bus idling periods at bus stops and traffic lights. Analysis shows that more than 15 % fuel reduction is possible solely by turning off the engine.
PB  - International Council for Research and Innovation in Building and Construction (CIB), Working Commission W115
PB  - University of Twente, the Netherlands
PB  - Sarajevo Green Design Foundation, Bosnia and Herzegovina
C3  - CIB W115 Green Design Conference
T1  - Assesment of Fuel Economy Improvement Potential for a Hydraulic Hybrid Transit Bus
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4582
ER  - 

@conference{
author = "Mrđa, Predrag D. and Miljić, Nenad and Popović, Slobodan and Kitanović, Marko and Petrović, Vladimir",
year = "2012",
abstract = "Hybridization, in particular Hydraulic Hybrid Technology (HHT), is offering significant powertrain efficiency breakthroughs in near and mid-term. A data acquisition on a transit bus has been performed to assess the potentials for fuel consumption reduction based on deceleration energy calculations. Initial study suggests fuel economy improvements of 20 % are possible. Additional investigation was carried out to quantify fuel savings that would be achieved by implementing a start-stop system. Significant fuel consumption occurs during bus idling periods at bus stops and traffic lights. Analysis shows that more than 15 % fuel reduction is possible solely by turning off the engine.",
publisher = "International Council for Research and Innovation in Building and Construction (CIB), Working Commission W115, University of Twente, the Netherlands, Sarajevo Green Design Foundation, Bosnia and Herzegovina",
journal = "CIB W115 Green Design Conference",
title = "Assesment of Fuel Economy Improvement Potential for a Hydraulic Hybrid Transit Bus",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4582"
}

Mrđa, P. D., Miljić, N., Popović, S., Kitanović, M.,& Petrović, V.. (2012). Assesment of Fuel Economy Improvement Potential for a Hydraulic Hybrid Transit Bus. in CIB W115 Green Design Conference
International Council for Research and Innovation in Building and Construction (CIB), Working Commission W115..
https://hdl.handle.net/21.15107/rcub_machinery_4582

Mrđa PD, Miljić N, Popović S, Kitanović M, Petrović V. Assesment of Fuel Economy Improvement Potential for a Hydraulic Hybrid Transit Bus. in CIB W115 Green Design Conference. 2012;.
https://hdl.handle.net/21.15107/rcub_machinery_4582 .

Mrđa, Predrag D., Miljić, Nenad, Popović, Slobodan, Kitanović, Marko, Petrović, Vladimir, "Assesment of Fuel Economy Improvement Potential for a Hydraulic Hybrid Transit Bus" in CIB W115 Green Design Conference (2012),
https://hdl.handle.net/21.15107/rcub_machinery_4582 .