Effect of Combustion Chamber Geometry on In-Cylinder Flows and Equivalence Ratio Spread in a Direct Injection Engine-A CFD Analysis

摘要：

　　In this study,a CFD analysis to evaluate effect of combustion chamber geometry on incylinder fluid flows and equivalence ratio spread in a Direct Injection Spark Ignition Engine (DISI) during intake and compression stroke has been carried out.The analysis has been carried out using STAR-CD es-ice software for four piston top profiles viz.,flat piston,flat piston with a centre bowl,dome piston with a central bowl and pentroof type piston with an offset bowl at an engine speed of lO00rpm.For meshing the geometric model,polyhedral trimmed cell are adopted.The solution is obtained by solving conservation of mass,momentum and energy equations using SIMPLE algorithm.From the results,it is found that for DISI engine,flat piston is best suitable.

关键词： In-cylinder fluid flow Equivalence ratio spread Direct Injection Spark Ignition Engine Combustion chamber Tumble ratio Turbulent kinetic energy CFD

作者: B.Harshavardhan J.M.Mallikarjuna

作者单位: IC Engines Laboratory, Indian Institute of Technology Madras, Chennai-36, India

会议类型: 国际会议

会议名称: 2nd International Conference on Materials Engineering and Automatic Control (第二届材料工程与自动化控制国际会议)(ICMEAC2013)

会议地点: 济南

会议语种:英文

页码: 815-820

在线出版日期: 2013-05-18（万方平台首次上网日期，不代表论文的发表时间）