环境参数对汽车颗粒物PM排放水平评估的影响研究  

Study on the Influence of Environmental Parameters on the Assessment of PM Emission Level of Automotive Particulate Matter

作　　者：徐红林 方卢耀 张振栋 秦怡 杨鹏程 XU Honglin;FANG Luyao;ZHANG Zhendong;QIN Yi;YANG Pengcheng

机构地区：[1]上汽大众汽车有限公司,上海201805

出　　处：《上海汽车》2022年第12期49-53,共5页Shanghai Auto

摘　　要：降低汽车尾气排放中的颗粒物PM是汽车排放研究工作的难点。由于PM质量微小,因而PM取样滤纸在称重过程中,很多因素都将对PM质量称重精度产生影响。环境的温度和压力变化可以通过浮力修正,而湿度变化没有修正的方法。文章通过研究表明:滤纸在取样前后如果湿度存在较大差异,将产生PM质量称重误差,也会对车辆PM排放水平评估的准确度产生影响。Reducing particulate matter in automobile emission is a difficult point in automobile emission research work.Due to tiny mass of particulate matter,many factors may affect the weighing accuracy of particulate matter during the process of filter paper weighing.The temperature and pressure variation of the environment are corrected by buoyancy,and there is no correction method for humidity at present.The research shows that if there is a large difference in the humidity of filter paper before and after sampling,the weighing error of particulate matter will occur,which will produce an effect on the assessment of particulate matter emission level.

关 键 词：PM颗粒物 环境湿度 质量误差 排放水平评估 

分 类 号：X734.2[环境科学与工程—环境工程] U464.134.4[机械工程—车辆工程]