摘要
研究了变组分富氧进气对发动机起动和怠速过程排放的影响。结果表明,在较低的氧浓度(21%～25%)下,随进气氧浓度的增加,CO、HC排放明显下降,尽管NOx排放有所升高,但总体NOx排放仍然处于较低水平;在更高富氧浓度下,不但CO、HC排放降低程度明显减小,而且NOx排放大幅提高。
The influence of variable composition oxygen-enriched intake air on emission during starting and idling engine is investigated in the paper.The results shows that if oxygen concentration is at low （21%～25%）,CO and HC emission decrease considerably with the increase of oxygen concentration in the intake air,although NOx emission increases slightly,but generally speaking it is still maintains at a low level;but if oxygen concentration stays at a higher level,not only the reduction of Co and HC emission drops ...
出处
《汽车技术》
北大核心
2009年第12期33-36,共4页
Automobile Technology
基金
国家自然科学基金资助项目(No.50676039)
关键词
发动机
起动
怠速
富氧
排放
Engine
Starting
Idling
Oxygen-enriched intake air
Emission
