A Simulation Study of the Effects of Turbo-Expansion Concept Implementation on Combustion and Gas-Exchange Processes of a 1.4 L Spark-Ignition Engine
Апстракт
Internal combustion engines account for approximately a quarter of global energy demand. The primary reason is the very high reliance of the transportation sector on fossil fuels. Reducing IC Engines' environmental impact and fuel consumption is one of the directions taken by vast research efforts aimed at increasing the sustainability of the transportation sector. One of the possibilities is the use of a charge-air cooling process - turbo-expansion, to raise efficiency by harnessing more exhaust energy and raising the intake charge density. It allows intake-air temperature to be lowered to around, or even below, ambient levels and exempts the turbocharger system from using a wastegate. A co-simulation in WAVE and MATLAB/Simulink environments was conducted to investigate the effects of the turbo-expansion concept on gas-exchange and combustion processes of a small, 1,4 L spark-ignition turbocharged engine. An empirical, operating conditions-correlated, Wiebe-based spark-ignition combus...tion model was used to predict the influence of intake and exhaust conditions on combustion duration and heat release dynamics. The implications on the engine gas-exchange processes are quantified. Despite significant intake charge cooling effect not being conveyed inside the cylinders, the brake specific fuel consumption is predicted to be reduced by 1,8 % at 4500 RPM.
Кључне речи:
turbo-expansion / internal combustion engine / combustion / gas-exchange / simulationИзвор:
International Congress Motor Vehicles & Motors 2012, Kragujevac, October 3rd -5th, 2012, 2012, 147-158Издавач:
- Faculty of Engineering, University of Kragujevac
Финансирање / пројекти:
- Истраживање и развој алтернативних погонских система и горива за градске аутобусе и комунална возила ради побољшања енергетске ефикасности и еколошких карактеристика (RS-MESTD-Technological Development (TD or TR)-35042)
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Kitanović, Marko AU - Popović, Slobodan AU - Miljić, Nenad AU - Tomić, Miroljub V. AU - Mrđa, Predrag D. PY - 2012 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4596 AB - Internal combustion engines account for approximately a quarter of global energy demand. The primary reason is the very high reliance of the transportation sector on fossil fuels. Reducing IC Engines' environmental impact and fuel consumption is one of the directions taken by vast research efforts aimed at increasing the sustainability of the transportation sector. One of the possibilities is the use of a charge-air cooling process - turbo-expansion, to raise efficiency by harnessing more exhaust energy and raising the intake charge density. It allows intake-air temperature to be lowered to around, or even below, ambient levels and exempts the turbocharger system from using a wastegate. A co-simulation in WAVE and MATLAB/Simulink environments was conducted to investigate the effects of the turbo-expansion concept on gas-exchange and combustion processes of a small, 1,4 L spark-ignition turbocharged engine. An empirical, operating conditions-correlated, Wiebe-based spark-ignition combustion model was used to predict the influence of intake and exhaust conditions on combustion duration and heat release dynamics. The implications on the engine gas-exchange processes are quantified. Despite significant intake charge cooling effect not being conveyed inside the cylinders, the brake specific fuel consumption is predicted to be reduced by 1,8 % at 4500 RPM. PB - Faculty of Engineering, University of Kragujevac C3 - International Congress Motor Vehicles & Motors 2012, Kragujevac, October 3rd -5th, 2012 T1 - A Simulation Study of the Effects of Turbo-Expansion Concept Implementation on Combustion and Gas-Exchange Processes of a 1.4 L Spark-Ignition Engine EP - 158 SP - 147 UR - https://hdl.handle.net/21.15107/rcub_machinery_4596 ER -
@conference{ author = "Kitanović, Marko and Popović, Slobodan and Miljić, Nenad and Tomić, Miroljub V. and Mrđa, Predrag D.", year = "2012", abstract = "Internal combustion engines account for approximately a quarter of global energy demand. The primary reason is the very high reliance of the transportation sector on fossil fuels. Reducing IC Engines' environmental impact and fuel consumption is one of the directions taken by vast research efforts aimed at increasing the sustainability of the transportation sector. One of the possibilities is the use of a charge-air cooling process - turbo-expansion, to raise efficiency by harnessing more exhaust energy and raising the intake charge density. It allows intake-air temperature to be lowered to around, or even below, ambient levels and exempts the turbocharger system from using a wastegate. A co-simulation in WAVE and MATLAB/Simulink environments was conducted to investigate the effects of the turbo-expansion concept on gas-exchange and combustion processes of a small, 1,4 L spark-ignition turbocharged engine. An empirical, operating conditions-correlated, Wiebe-based spark-ignition combustion model was used to predict the influence of intake and exhaust conditions on combustion duration and heat release dynamics. The implications on the engine gas-exchange processes are quantified. Despite significant intake charge cooling effect not being conveyed inside the cylinders, the brake specific fuel consumption is predicted to be reduced by 1,8 % at 4500 RPM.", publisher = "Faculty of Engineering, University of Kragujevac", journal = "International Congress Motor Vehicles & Motors 2012, Kragujevac, October 3rd -5th, 2012", title = "A Simulation Study of the Effects of Turbo-Expansion Concept Implementation on Combustion and Gas-Exchange Processes of a 1.4 L Spark-Ignition Engine", pages = "158-147", url = "https://hdl.handle.net/21.15107/rcub_machinery_4596" }
Kitanović, M., Popović, S., Miljić, N., Tomić, M. V.,& Mrđa, P. D.. (2012). A Simulation Study of the Effects of Turbo-Expansion Concept Implementation on Combustion and Gas-Exchange Processes of a 1.4 L Spark-Ignition Engine. in International Congress Motor Vehicles & Motors 2012, Kragujevac, October 3rd -5th, 2012 Faculty of Engineering, University of Kragujevac., 147-158. https://hdl.handle.net/21.15107/rcub_machinery_4596
Kitanović M, Popović S, Miljić N, Tomić MV, Mrđa PD. A Simulation Study of the Effects of Turbo-Expansion Concept Implementation on Combustion and Gas-Exchange Processes of a 1.4 L Spark-Ignition Engine. in International Congress Motor Vehicles & Motors 2012, Kragujevac, October 3rd -5th, 2012. 2012;:147-158. https://hdl.handle.net/21.15107/rcub_machinery_4596 .
Kitanović, Marko, Popović, Slobodan, Miljić, Nenad, Tomić, Miroljub V., Mrđa, Predrag D., "A Simulation Study of the Effects of Turbo-Expansion Concept Implementation on Combustion and Gas-Exchange Processes of a 1.4 L Spark-Ignition Engine" in International Congress Motor Vehicles & Motors 2012, Kragujevac, October 3rd -5th, 2012 (2012):147-158, https://hdl.handle.net/21.15107/rcub_machinery_4596 .