基于循环控制的点燃式LPG-甲醇发动机冷起动性能研究  

Research on Cold Start Performance of Spark-ignition LPG-methanol Engine Based on Cycle Control

作　　者：宫长明[1] 王舒[2] 刘家郡[3] 邓宝清[1] 于晓璐[2] 

机构地区：[1]吉林大学汽车学院,吉林长春130022 [2]车辆排放与节能重庆市市级重点实验室,重庆400039 [3]吉林大学链传动研究所,吉林长春130022

出　　处：《车用发动机》2008年第1期19-21,共3页Vehicle Engine

基　　金：国家自然科学基金资助项目(50576031)

摘　　要：针对进气道电控喷射点燃式LPG—甲醇发动机,基于循环控制方法研究了LPG与甲醇循环喷射量质量比、LPG迟后甲醇喷射时刻和环境温度对LPG—甲醇发动机冷起动性能的影响。试验结果表明,加大LPG与甲醇循环喷射量质量比,LPG—甲醇发动机冷起动可靠性提高;合理控制LPG迟后甲醇的喷射时刻可获得良好的LPG—甲醇发动机起动性能;环境温度降低,需加大LPG与甲醇循环喷射量质量比才可确保LPG—甲醇发动机可靠起动。For the spark-ignition LPG-methanol engine whose electronic-controlled injection was done in the inlet, the cycle injection quality ratio of LPG-methanol, the injection timing of LPG lagging behind methanol, and the influence of ambient temperature on cold start performance were researched on the base of cycle control method. The results showed that the increase of cycle injection quality ratio for LPG-methanol and the reasonable control for the injection timing of LPG lagging behind methanol could improve the cold start reliability of LPG-methanol engine. It was also found that the cycle injection quality ratio for LPG-methanol should be increased to assure LPG-methanol of reliable cold start when the ambient temperature was very low.

关 键 词：点燃式发动机 液化石油气 甲醇 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]