汽车尾气排放对雾霾的影响及降低颗粒物排放的策略  

Influence of Automobile Exhaust Emission on Haze and Strategy of Reducing Particulate Matter Emission

作　　者：高南军 GAO Nan-jun(SAIC Motor Technical Center,Shanghai 201804,China)

机构地区：[1]上海汽车集团股份有限公司乘用车公司技术中心,上海201804

出　　处：《内燃机与配件》2021年第17期47-51,共5页Internal Combustion Engine & Parts

摘　　要：雾霾已经成影响环境的重要因素,汽油机作为目前主要的颗粒物排放源,对其颗粒物成因研究具有重要意义。研究发现汽油机产生的超细微粒主要由核态和积聚态构成,对雾霾的产生其主要作用,为满足法规对颗粒物排放的限制,FWC作为新型催化器系统起到重要作用。FWC的活性再生问题已成为FWC应用的技术难点,采用二次喷射的方式能有效恢复部分活性,但仍有很多技术问题需要解决。Haze has become an important factor affecting the environment.As the main source of particulate matter emission,it is of great significance to study the cause of the formation of particulate matter.It is found that the ultrafine particles produced by gasoline engine are mainly composed of nuclear state and accumulation state,which play a major role in haze.In order to meet the requirements of regulations on particulate matter emission,FWC plays an important role as a new catalytic converter system.The active regeneration of FWC has become a technical difficulty in the application of FWC.The secondary injection can effectively recover part of the activity,but there are still many technical problems to be solved.

关 键 词：雾霾 颗粒物 汽油机 FWC 二次空气喷射 

分 类 号：U472.43[机械工程—车辆工程]