增压稀燃液化石油气发动机优化匹配  

Optimal matching of supercharging lean burn LPG engine

作　　者：曲大为[1] 李君[1] 高莹[1] 宋昌庆[1] 范鲁艳[1] 

机构地区：[1]吉林大学汽车动态模拟国家重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2011年第3期635-639,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：'863'国家高技术研究发展计划项目(2006AA11A197)

摘　　要：通过优化压缩比和凸轮轴配气相位,提高了增压稀燃液化石油气(LPG)发动机效率,解决了由于LPG燃烧较慢引起的发动机热效率低、排放差和排温过高等问题。使用一维仿真软件搭建了增压稀燃LPG发动机整机模型,并通过对比不同压缩比下发动机性能的仿真计算结果和台架试验结果,确定了最优压缩比。在最优压缩比下采用逐次优化方法优化排气早开角和进排气门叠开角,并对优化结果进行了试验验证。The efficiency of a supercharging lean burn liquefied petroleum gas （LPG） engine was improved by optimizing the compression ratio and the valve timing, and its fuel consumption, the exhaust emissions,and the exhaust gas temperature were reduced. A whole engine model was set up using one-dimensional simulation software. The optimal compression ratio was found by comparing the simulation computed results and bench test results under different compression ratios. The exhaust advance angle and valve overlap angle were optimized by the successive optimization method and verified by tests.

关 键 词：动力机械工程 液化石油气发动机 一维仿真 优化匹配 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]