电控喷射甲醇发动机掺烧液化石油气的冷起动着火特性  

Cold start firing behavior of electronically controlled injection methanol engine with LPG as ignition improver

作　　者：宫长明[1] 王舒[2] 邓宝清[1] 于晓璐[3] 高青[1] 刘巽俊[1] 

机构地区：[1]吉林大学汽车工程学院,长春130022 [2]重庆汽车研究所,重庆400039 [3]车辆排放与节能重庆市市级重点实验室,重庆400039

出　　处：《吉林大学学报（工学版）》2008年第S1期75-79,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50576031);吉林省科技发展计划项目(20050542).

摘　　要：在一台125mL单缸电控喷射点燃式甲醇发动机上进行了掺烧LPG后冷起动瞬态工况着火特性的试验研究。基于循环控制研究了LPG掺烧量、甲醇和LPG的喷射时刻对甲醇发动机冷起动着火特性和HC排放的影响。试验结果表明:低温起动时进气道内喷射适量LPG可使点燃式甲醇发动机可靠起动;LPG掺烧量对甲醇发动机冷起动着火特性有很重要的影响;合理控制LPG的喷射时刻可提高起动可靠性,降低HC排放。The transient firing behavior of a spark-ignition engine fueled with methanol blended with LPG at cold start was investigated experimentally in a 125 mL single cylinder electronically controlled fuel injection engine.The effects of the blended LPG amount,the injection timings of the methanol and the LPG on the firing behavior and HC emission of the engine were studied by means of cycle-to- cycle control technique.The results show that a propriety amount of LPG injected into the intake port promotes the cold...

关 键 词：动力机械工程 电控喷射 甲醇发动机 冷起动 着火特性 液化石油气 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]