缸内直喷汽油机多种燃烧模式的试验研究  

Experimental Investigation on Multi-mode Combustion of GDI Engine

作　　者：张志福[1,2] 周重光[2] 杨俊伟[2] 王志[3] 王孟轲[2] 王建军[2] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072 [2]奇瑞汽车股份有限公司发动机工程研究院,安徽芜湖241009 [3]清华大学汽车工程系汽车安全与节能国家重点实验室,北京100084

出　　处：《车用发动机》2012年第2期75-79,共5页Vehicle Engine

基　　金：奇瑞新一代轿车用节能环保高效汽油机研发(2008AA11A113)

摘　　要：基于量产增压缸内直喷汽油机,采用可变升程机构实现多种燃烧模式,在低升程下实现了均质燃烧、分层稀燃和均质压燃。试验结果表明:在转速2 000r/min,负荷0.2MPa,0.4MPa下,均质压燃的燃烧持续期最短,放热最快;在转速2 000r/min,负荷0.2MPa下,均质压燃的燃油消耗率最低,达到337g/(kW.h),同时均质压燃的NOx排放远低于均质燃烧和分层稀燃。Based on the batch-produced turbocharged GDI engine,the multi-mode combustion was realized with the mechanism of variable tappet.The homogenous combustion,stratified lean burn and HCCI combustion were carried out at low cam lift.The results show that,in the operating points of 2 000 r/min with 0.2 MPa and 0.4 MPa loads,the shortest combustion duration and heat release can be achieved with HCCI combustion.In the operating points of 2 000 r/min with 0.2 MPa load,the lowest BSFC of 337 g/（kW·h） can be achieved with HCCI combustion,and NOx emission is far below those of homogenous combustion and stratified lean burn.

关 键 词：汽油机 缸内直喷 均质燃烧 分层稀燃 均质压燃 

分 类 号：TK411.25[动力工程及工程热物理—动力机械及工程]