重型车在用符合性的车载测试方法研究

Study of On-board Testing Methods for In-use Compliance of Heavy-duty Vehicles

从2000年我国实施第一阶段排放标准开始,汽车的排放法规日益严格,对机动车污染的控制力度逐步加大。在用车符合性是机动车排放管理的重点内容,从第四阶段排放标准开始我国将对重型车实施在用符合性检查。但我国对重型车在用符合性的相关研究起步较晚,目前的发动机台架测试方法在操作性和有效性上都存在不足。介绍了以欧盟和美国为代表的国外重型车在用符合性车载测试方法研究、实施进展,国内已开展的一些探索研究及车载排放测试系统。

Since the enforcement of China 1 emission standards in 2000,vehicle emission regulations are getting more and more stringent to enhance the pollution control.In-use compliance（IUC）is an important part of the vehicle emission control,and it will be enforced for the heavy-duty vehicles with the China 4 emission standards.Studies on the IUC of heavy-duty vehicles have just begun in China;and there are shortcomings in the operation and effectiveness of engine dynamometer test.The research and enforcement progress of the on-board testing methods for IUC of heavy-duty vehicles in European Union and the United States was introduced,as well as some preliminary studies carried out in China,which could be reference for the enhancement of China＇s IUC program of heavy-duty vehicles.In addition,the portable emissions measurement system（PEMS）for on-board test was introduced briefly.