This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Simulation Guided Design for Developing Direct Injection Combustion Systems of Gasoline Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 17, 2016 by SAE International in United States
Annotation ability available
This paper describes a simulation guided design methodology for developing direct injection combustion systems of gasoline engines. The first step is the optimization of engine gas flow. The intake port is optimized by CFD simulations to compromise the engine breathing capacity and its tumble flow. Secondly, the piston crown shapes and the injection system designs (injection pressure, hole number, hole size and orientations) are optimized based on dedicated CFD simulation results. Thirdly, different injection strategies are used at different engine operating conditions to achieve best engine performance, such as split injections being used at cold starting and catalyst heating period to realize stratified charge combustion for fast catalyst light-off, and a single injection being used to achieve homogeneous mixture combustion at almost all other operating conditions. This methodology was applied to develop a gasoline direct injection system to replace a MPI fuel system of a 1.6 liter naturally aspirated engine. The dyno data of the developed engine show that, comparing with the baseline MPI engines, the developed combustion system can increase the engine torque by 5% ∼ 23%, the maximum power by 4.5%, and decrease the fuel consumption under vehicle NEDC drive cycle by 3.9% (with the original gearbox). And after an optimization design of the transmission, the fuel consumption under NEDC working condition improves by 6.6%.
- Jianjun Zheng - Chongqing Changan Automobile Co Ltd
- Zhangsong Zhan - Chongqing Changan Automobile Co Ltd
- Huixian Shen - Chongqing Changan Automobile Co Ltd
- Xiaoyong Li - Chongqing Changan Automobile Co Ltd
- Zhiqin Xu - Chongqing Changan Automobile Co Ltd
- Yuhang Tang - Chongqing Changan Automobile Co Ltd
- Xiaodong Chen - Chongqing Changan Automobile Co Ltd
- Qingqiang Zeng - Chongqing Changan Automobile Co Ltd
- Huibin Qing - Chongqing Changan Automobile Co Ltd
- Tiegang Hu - Chongqing Changan Automobile Co Ltd
CitationZheng, J., Zhan, Z., Shen, H., Li, X. et al., "Simulation Guided Design for Developing Direct Injection Combustion Systems of Gasoline Engines," SAE Technical Paper 2016-01-2313, 2016, https://doi.org/10.4271/2016-01-2313.
- Wang, X., Zhan, Z., Yu, X., Hu, T. et al., "Experimental Study on Injector Spray Pattern Optimization for a Turbocharged GDI Engine Combustion System," SAE Technical Paper 2014-01-1439, 2014, doi:10.4271/2014-01-1439.
- Zhao H., "Advanced direct injection combustion engine technologies and development: Gasoline and gas engines (Volume 1), " ISBN 978-1-84569-389-3, 2010.
- Yu, C., Park, K., Han, S., and Kim, W., "Development of Theta II 2.4L GDI Engine for High Power & Low Emission," SAE Technical Paper 2009-01-1486, 2009, doi:10.4271/2009-01-1486.
- Mitani, S., Hashimoto, S., Nomura, H., Shimizu, R. et al., "New Combustion Concept for Turbocharged Gasoline Direct-Injection Engines," SAE Int. J. Engines 7(2):551-559, 2014, doi:10.4271/2014-01-1210.
- Motohashi, Y., Kubota, K., Akaishi, N., Ishiki, K. et al., "Development of New L4 2.4L Gasoline Engine for 2013 Model Year ACCORD," SAE Technical Paper 2013-01-1734, 2013, doi:10.4271/2013-01-1734.
- Amari, K., Ando, S., Chujo, K., Sakai, T. et al., "Development of a New 5.6 L V8 Gasoline Engine," SAE Technical Paper 2010-01-1320, 2010, doi:10.4271/2010-01-1320.
- Zizelman J., Rivera E., Kirwan J., Lee N. et al., " The New ChangAn 1.5L Turbo Gasoline Direct Injection Engine with Delphi Engine Management System for the China Market, " 3rd Aachen Colloquium China Automobile and Engine Technology, Beijing,China,2013.
- Xu, Z., Yi, J., Curtis, E., and Wooldridge, S., "Applications of CFD Modeling in GDI Engine Piston Optimization," SAE Int. J. Engines 2(1):1749-1763, 2009, doi:10.4271/2009-01-1936.
- Iyer, C. and Yi, J., "3D CFD Upfront Optimization of the In-Cylinder Flow of the 3.5L V6 EcoBoost Engine," SAE Technical Paper 2009-01-1492, 2009, doi:10.4271/2009-01-1492.
- Xu, Z., Yi, J., Wooldridge, S., Reiche, D. et al., "Modeling the Cold Start of the Ford 3.5L V6 EcoBoost Engine," SAE Int. J. Engines 2(1):1367-1387, 2009, doi:10.4271/2009-01-1493.
- Wyszynski, L., Stone, C., and Kalghatgi, G., "The Volumetric Efficiency of Direct and Port Injection Gasoline Engines with Different Fuels," SAE Technical Paper 2002-01-0839, 2002, doi:10.4271/2002-01-0839.
- Attar, M. A., Herfatmanesh, M. R., Zhao, H., and Cairns, A., "Experimental investigation of direct injection charge cooling in optical GDI engine using tracer-based PLIF technique," Experimental Thermal & Fluid Science 59(9):96-108,2014,doi: 10.1016/j.expthermflusci.2014.07.020.
- Kim, T., Song, J., and Park, S., "Effects of turbulence enhancement on combustion process using a double injection strategy in direct-injection spark-ignition (DISI) gasoline engines, " International Journal of Heat & Fluid Flow 56(3):124-136, 2015,doi: 10.1016/j.ijheatfluidflow.2015.07.013.
- Kim, Y., Kim, Y., Jun, S., Lee, K. et al., "Strategies for Particle Emissions Reduction from GDI Engines," SAE Technical Paper 2013-01-1556, 2013, doi:10.4271/2013-01-1556.
- Choi, K., Kim, J., Ko, A., Myung, C. et al., "Evaluation of Time-Resolved Nano-Particle and THC Emissions of Wall-Guided GDI Engine," SAE Technical Paper 2011-28-0022, 2011, doi:10.4271/2011-28-0022.