点燃式发动机临界爆震控制及其特性  

Control and characteristics of critical knock in S.I.Engine

作　　者：高青[1] 金英爱[1] 李明[1] 方瑛[1] 

机构地区：[1]吉林大学汽车工程学院,吉林长春130025

出　　处：《吉林大学学报（工学版）》2003年第4期7-11,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金资助项目(50076016)。

摘　　要：对发动机临界爆震的控制特性进行了试验研究,得出了最佳点火提前角控制曲面。由爆震判别可知,各缸爆震程度差异性较大。对近爆震区域的发动机的动力性和经济性进行了试验研究。指出在接近爆震区域,动力性和经济性均有改善趋势。发现爆震控制系统存在调节惯性,并对此进行了一定的分析。Control characteristics of critical knock of S.I.engine have been experimentally investigated,and optimal ignition advanced angle surface of engine controlled by a knockcontrol unit has been obtained.Knock identification told of difference in knock intensity from cylinder to cylinder.Power output and fuel economy of engine under control of knockcontrol unit were tested and results prove that performances can be improved when engine approaches critical knock conditions.It is found that adjustment inertia exists in adjusting process of the knockcontrol system and its effect was discussed.

关 键 词：发动机 爆震控制 发动机性能 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]