重型车辆车载排放测试系统的集成和验证

摘要

对气体污染物测量设备和颗粒物测量装置进行集成,形成一套可以实时测量重型汽车各种污染物(HC、CO、NO_x和PM)排放浓度和计算瞬时排放质量的综合性车载排放测试系统(IPEMS).实车排放测试和实验室对比试验结果表明,建成的系统具有良好的测量重复性;各种污染物的IPEMS测量结果与实验室CVS系统测量结果之间的相关性强,满足准确测量和评估重型汽车实际道路条件下排放的技术要求.%Two independent measurement devices for vehicle gaseous pollutants and particulate matter (PM) are integrated to form an integrated portable emission measurement system (IPEMS), which can measure the emission concentration of various pollutants ( HC, CO, NOx and PM) real time and calculate the transient emission mass of heavy-duty vehicles. The results of real vehicle emission measurement and comparison test in laboratory show that the built system IPEMS has good measurement reproducibility, and there is strong correlativity between the emission measured results by IPENMS and that by laboratory system, meeting the technical requirements of accurate measurement and evaluation of emissions from heavy-duty vehicles at real road conditions.