摘要
针对怠速法不能正能反映汽车的实际工作情况，美国提出采用工况法对在用车的 排放加以检测。介绍了美国目前所采用的IM240、ASM和IG240三种检测程序的检测原理，并 与怠速法加以对比。IM240测定结果是以汽车每行驶1 000 m的排气管排放物质量来表述；AS M是一种简易、廉价的加速模拟工况检测程序；IG240是瞬态加负荷的工况法检测程序，是在 ASM的基础上改进而成的。
In view of idle method can not reflect the actual operating condit ions of vehicle correctly,operating mode method was used for in use vehicles em isssion test in America.This paper introduces three measuring processes,IM240,AS M and IG240,which are used in America at present time,and make a comparison with idle method.The measuring results of IM240 are presented by the weight of emiss ions from tail pipe for every 1 000 m.ASM is a simple and cheap method to simula te the acce leration process.In IG240 process,improved on the basis of ASM,the transient l oad changes was considered.
出处
《汽车技术》
北大核心
2001年第6期18-20,24,共4页
Automobile Technology
