柴油机燃烧放热模式分析  

Analysis of Heat Release Mode for Diesel Engine

作　　者：井恩泽[1] 刘忠长[1] 韩永强[1] 李康[2] 刘江唯[2] 

机构地区：[1]吉林大学汽车动态模拟国家重点实验室,吉林长春130022 [2]中国第一汽车集团公司技术中心,吉林长春130011

出　　处：《车用发动机》2010年第3期56-59,共4页Vehicle Engine

基　　金：国家高新技术发展规化(2008AA11A115)

摘　　要：研究了NOx和PM的机内净化方法，试验分析了EGR、高压喷射对柴油机排放的影响规律。在此基础上确定低NOx和低PM两种理想燃烧模式对应放热率参数的闽值。结果表明：NOx净化达到欧Ⅳ标准时，所对应的归一化放热率阈值为0．045～0．049℃A^-1；PM净化达到欧Ⅳ标准时，对应的归一化放热率阈值为0．045～0．06℃A^-1；二者同时达欧Ⅳ的归一化放热率阈值为二者的交集0．045～0．049℃A^-1。The inner engine control of NOx and PM emission was researched and the influences of high-pressure injection and EGR on diesel engine emission were analyzed. Based on this, the threshold values of heat release rate in low NO, and low PM ideal combustion modes were determined. The results show that the corresponding normalized heat release rate is 0. 045- 0. 049 ℃A^-1 when the NOx emission meets the Euro IV requirement; and it is 0. 045-0.06 ℃A6-1 when the PM emission saris ties the Euro 1V requirement. As a result, it is 0. 045-0. 049 ℃A ^-1 when the NO, and PM emission simultaneously reach the Euro IV standards.

关 键 词：柴油机 放热率 废气再循环 高压喷射 排放 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]