变组分富氧进气发动机起动与怠速过程排放研究  

Study on Emission of during Starting and Idling of Engine with Variable Composition Oxygen-enriched Intake Air

作　　者：刘成材[1] 金英爱[1,2] 高淳[1] 马纯强[1] 方瑛[1] 

机构地区：[1]吉林大学 [2]吉林大学汽车动态模拟国家重点实验室

出　　处：《汽车技术》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)

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 ...

关 键 词：发动机 起动 怠速 富氧 排放 

分 类 号：U464[机械工程—车辆工程]