电控LPG点燃式发动机冷起动过程瞬态NO排放特性研究  

Research on Real Time NO Emission Characteristics During Cold Start in an Electronic Control LPG Motorcycle Engine

作　　者：祖英利[1] 栗工 李理光[3] 

机构地区：[1]上海第二工业大学实训中心,上海201209 [2]联合汽车电子有限公司 [3]同济大学汽车学院

出　　处：《小型内燃机与摩托车》2009年第1期29-32,共4页Small Internal Combustion Engine and Motorcycle

摘　　要：使用瞬态NO气体分析仪,结合其它发动机参数,研究缸内燃烧过程。试验结果表明NO排放可以成为判断缸内燃烧的新依据。冷起动过程中瞬态NO排放主要集中在初始的几个循环中,而发动机转速稳定后,后续循环瞬态NO排放逐渐降低。冷起动过程中,混合气浓度保持不变时,瞬态NO排放随点火角度的提前而增加。As NO is produced along with combustion, real time NO emission is used as a criterion of combustion occurrence. A fast response NO detector is used to measure real time NO emissions in order to evaluate the technique as a criterion for establishing combustion occurrence. Test results show that real time NO emis- sions can be used to identify the cylinder combustion and misfire occurrence during engine cranking. Real time NO emissions mostly happened in first several cycles during cold-start, and NO emissions increased with the spark timing advancing.

关 键 词：LPG 点燃式发动机 冷起动 首循环 NO瞬态排放 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]