喷油器安装角度对缸内直喷汽油机混合气的影响  

The Investigation on the Influence of Injector Mounting Angle on the Fuel Mixture Formation of GDI Engine

作　　者：彭禹 曾金玲[2] 

机构地区：[1]德尔福动力总成系统-中国科技研发中心 [2]中国第一汽车集团公司技术中心

出　　处：《汽车技术》2011年第7期4-10,共7页Automobile Technology

摘　　要：以侧置喷油器的缸内直喷汽油机为对象,采用数值计算分析方法对混合气形成过程和喷油器安装角度对缸内混合气形成的影响进行了分析。结果表明,缸内气体流动对燃油喷束形态影响很大;转速不同时,缸内混合气形成过程差异较大;点火时刻的缸内混合气成分对喷油器安装角度较为敏感,可以通过改变喷油器安装角度在一定程度上优化缸内混合气的成分。With numerical-computation as the analysis approach,an investigation on the influence of injector mounting angle on the fuel mixture formation was conducted for a GDI engine with side-mounted injectors.The results show that the gas flow inside cylinders influences fuel spray shape greatly;the fuel mixture formation process differs greatly at different engine speeds;and in-cylinder fuel mixture components at ignition time is sensitive to the injector mounting angle,thus the in-cylinder fuel mixture components can be optimized by changing injector mounting angle to some extent.

关 键 词：汽油机 缸内直接喷射 喷油器 安装角度 混合气 

分 类 号：U464.171[机械工程—车辆工程]