TWC+PSCR稀燃发动机后处理系统研究进展  

Development Trend of TWC+PSCR Lean Burn Engine Post Processing System

作　　者：胡琨 刘旻 叶敬安 沈小荣 

机构地区：[1]上海汽车乘用车公司技术中心,上海201804

出　　处：《上海汽车》2018年第3期38-42,共5页Shanghai Auto

摘　　要：文章介绍了国Ⅵ排放法规对汽油车排气污染物的要求,阐述了稀燃发动机降低污染物的基本原理,重点概述了TWC+PSCR作为稀燃后处理系统的研究现状,指出了空燃比(λ)、贵金属负载量、催化剂温度等对TWC+PSCR效率的影响,最后展望了TWC+PSCR技术发展的前景。The requirement of gasoline standard is introduced, and the basic principle of ded. Research status of TWC ＋ PSCR as the lean vehicle exhaust pollutants of National VI emission pollutants reduction of lean burn engine is expoun- burn post processing system is mainly summarized, pointing out the air-fuel ratio （ A ）, precious metal loading and catalyst temperature influence on the ef- ficiency of the TWC ＋ PSCR. The development trend of TWC ＋ PSCR technology is prospected.

关 键 词：稀燃发动机 TWC PSCR后处理 

分 类 号：U464.134.4[机械工程—车辆工程]