Numerical Simulation on a New Solution to Cold-Start Emission for Gasoline Direct Injection Engine

摘要：

A new method to solve the cold-start emission problem for gasoline direct injection engine by combining the special shape of piston crown with the compound fuel supply system is studied. With the CFD numerical simulation, the influence of this method on the air flow and the airfuel mixture formation in cylinder of Gasoline Direct Injection engine under the cold-start conditions is analyzed. The result indicates that, by using the special shape of piston crown to guide the air flow reasonably and combining with the compound fuel supply system, the new method can optimize the formation and distribution of air flow in cylinder under the cold-start conditions, promote the fuel mixing with air, improve the distribution of air-fuel ratio and then reduce the HC emissions.

关键词： GDI Engine Piston Crown Compound Fuel Supply System Numerical Simulation

作者: Yantao Li

作者单位: State Key Laboratory of Engines, Tianjin University, Tianjin, 300072, China

会议类型: 国际会议

会议名称: 2010 International Conference on Intelligent Computation Technology and Automation(2010 智能计算技术与自动化国际会议 ICICTA 2010)

会议地点: 长沙

会议语种:英文

页码: 1995-1998

在线出版日期: 2010-05-11（万方平台首次上网日期，不代表论文的发表时间）