小型高速汽油机循环变动特性的测试与分析  

Test and Analysis of Cycle-by-cycle Variations for Small High Speed Gasoline Engine

作　　者：刘小强[1] 张力[1] 王英章[1] 伍东升[1] 徐宗俊[1] 

机构地区：[1]重庆大学,重庆400044

出　　处：《重庆科技学院学报（自然科学版）》2007年第2期44-47,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：重庆市自然科学基金项目(CSTC2005BB4166)

摘　　要：通过采集缸内、进气和排气瞬时压力信号试验测试小型高速汽油机循环变动。分别以缸内最大燃烧压力、进气管最小瞬时压力和排气管最大瞬时压力作为评定参数对缸内、进气和排气循环变动特性进行评价,并分析进气和排气循环变动与缸内循环变动特性的相互影响关系。试验测试结果表明,高速小型汽油机缸内循环变动率约8%￣12%,排气循环变动率约2%,进气循环变动率在1%以下;且缸内循环变动和进排气循环变动表现出一定的相关性,特别是排气循环变动受到缸内循环变动的影响比较大。The maximum combustion pressure, the minimum instantaneous intake pressure, and the maximum exhaust pressure are respectively used as indicators to evaluate the characteristics of cycle-by-cycle variations in the cylinder, intake and exhaust pipes. The effects of the cycle-by-cycle variations in the intake on the ones in the cylinders and the effects of the cycle-by-cycle variations in the cylinders on the ones in exhaust pipe are also analyzed.

关 键 词：循环变动 小型汽油机 压力测量 镁合金 

分 类 号：TK417.4[动力工程及工程热物理—动力机械及工程]