电控LPG发动机首循环冷起动特性  

Cold Start Characteristics of First Cycle in an Electronic Controlled LPG Engine

作　　者：宫长明[1] 邓宝清[1] 张永平[1] 刘志敏[1] 苏岩[1] 

机构地区：[1]吉林大学汽车工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2005年第3期272-276,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金："十五"国家科技攻关项目(2003BA408B09A);吉林大学创新基金项目

摘　　要：研究了喷射脉宽、点火提前角、环境温度、起动电压对LPG发动机首循环冷起动性能的影响。试验结果表明:喷射脉宽对电控喷射LPG发动机首循环冷起动特性有极其重要的影响。合理控制喷射时刻和喷射脉宽,并有合适的点火提前角,可达到“即喷即着”的冷起动效果,显著降低HC的排放。Effects of injection pulse width, ignition timing, ambient temperature and start voltage on cold start characterstic of the first cycle in the electronic controlled LPG engine were studied. Testing results indicate that the injection pulse width is the key factor for the characteristics of first cycle cold start. Reasonable injection timing and injection pulse width with right advanced ignition are capble of realizing cold start which the combustion occurs immediately after the first ignition. So HC emission is lowered remarkably.

关 键 词：动力机械工程 电控喷射 LPG发动机 冷起动 循环控制 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]