Optimization Design of Intake Manifold and Valve Timing of Gasoline Engine Based on AMESim Code

摘要：

In order to acquire lower fuel consumption and higher torque output at low and middle speed, an engine cycle simulation of a small turbocharged gasoline engine is conducted by AMESim code. After validated against test data, the simulation model is used to optimize the full load performance of spark ignition (SI) engine. The effects of both intake manifold length and valve timing on the torque, volumetric efficiency and fuel consumption are investigated in details. To overcome the conflicts between low speed and high speed engine performance, variable valve timing(VVT) strategy is also investigated. The results show that, engine torque and brake specific fuel consumption(BSFC) during low and middle speed period can be improved effectively as valve timing is optimized and matched with intake manifold length reasonably using the gas dynamic effect.

关键词： Gasoline engine Intake manifold Valve tinting optimization design AMESim code

作者: Han Wenyan Xu Sichuan Deng Xiao Zhou Yuckang Zhang Xiaomao

作者单位: Tongji University School of Automotive Studies Shanghai, China SAIC Motor Technical Center Engine Department Shanghai, China

会议类型: 国际会议

会议名称: 2011 3rd IEEE International Conference on Computer Research and Development(ICCRD 2011)(2011第三届计算机研究与发展国际会议)

会议地点: 上海

会议语种:英文

页码: 419-422

在线出版日期: 2011-03-11（万方平台首次上网日期，不代表论文的发表时间）