摘要
以一台柴油机为样机,研究了裸机、冷EGR及冷EGR+DOC+POC 3种配置状态的排放特性和POC入口处的排气温度变化情况。结果表明,与裸机相比,冷EGR状态下ESC、ETC循环NOx排放量分别降低了25%和26%,HC及CO增加了50%左右,PM分别增加了24%与16%;与冷EGR状态相比,冷EGR+DOC+POC状态下NOx排放量没有明显变化,PM、CO及HC,在ESC循环分别降低了56%、80%及91%,在ETC循环分别降低了50%、70%及86%。
In this paper,emission performance and change of emission temperature at POC inlet are studied res-pectively for a diesel engine with the following three configurations,with cold EGR,with EGR,DOC and POC as well as without the above configurations.The results show that compared with the engine without the above configuration,NOx emission of the engine with cold EGR is reduced by 25% and 26% respectively,HC and CO emission up by approx.50%,PM emission up by 24% and 16% respectively at ESC and ETC cycle;compared with engine with cold EGR,NOx emission for the engine with EGR,DOC and POC has no obvious change,emission of PM,CO and HC is reduced by 56%,80% and 91% respectively in ESC cycle,whereas they are reduced by 50%,70% and 86% respectively in ETC cycle.
出处
《汽车技术》
北大核心
2010年第12期14-17,共4页
Automobile Technology
