汽油发动机不同燃油喷射方式下缸内燃烧情况的试验研究  

Experimental Study on Combustion in Cylinder about Gasoline Engine under Different Fuel Injection Modes

作　　者：马玺[1,2] 刘义佳 关松[1,2] 袁军亮 胡晓[1,2] 张士伟[1,2] 

机构地区：[1]长城汽车股份有限公司技术中心,河北保定071000 [2]河北省汽车工程技术研究中心

出　　处：《小型内燃机与车辆技术》2015年第4期36-39,共4页Small Internal Combustion Engine and Vehicle Technique

摘　　要：对于汽油发动机而言,燃油喷射方式分为气道喷射和缸内直喷。采用气道喷射,燃油与新鲜空气具有更长的混合时间,油气混合均匀;采用缸内直接喷射,利用燃油在缸内的蒸发吸热降低混合气温度,可提高充气效率。从缸内燃烧参数的角度,分析低速、中小负荷工况汽油发动机在气道喷射和缸内直喷状态下燃烧情况以及对发动机整体性能的影响。For gasoline engine, the fuel injection is divided into port fuel injection and direct injection. With port fuel injection, the mixing time is longer for the fuel and fresh air and they are homogenized however, with direct injection the evaporation of the fuel in the cylinder is endothermic then the mixing temperature is reduced, so charging efficiency can be improved. From the perspective of combustion parameters, this article analyzes the combustion conditions of gasoline engine in low-load with port fuel injection and direct injection and performance of the engine.

关 键 词：汽油机 气道喷射 缸内直喷 燃烧 性能 

分 类 号：TK413.84[动力工程及工程热物理—动力机械及工程]