论文部分内容阅读
根据国标要求,结合本省现状,山东省于2011年制定了DB37/657-2011《山东省点燃式发动机在用轻型汽车排气污染物排放限值》,对汽车尾气排放的检测方法和污染物限值作出要求。目前对汽油车,采用简易瞬态工况法检测尾气排放,不能使用简易瞬态工况法的(最大质量超过3500千克、四轮驱动等车辆),采用双怠速法。本文介绍简易瞬态工况法的测量原理及过程,并对检测过程常见问题、如何保证量值准确
According to the national standard requirements, combined with the status quo in our province, Shandong Province in 2011 formulated the DB37 / 657-2011 “Shandong Province, light-engine exhaust emissions limits with light vehicles,” the detection of vehicle exhaust emissions and pollutant limits Value to make a request. At present, petrol vehicles are tested for exhaust emissions by simple transient conditions and can not be operated in the simple transient mode (the maximum mass is more than 3500 kg, four-wheel drive vehicles and the like), and the double idling method is adopted. This article describes the measurement principle and process of simple transient conditions method, and the common problems of the detection process, how to ensure the accuracy of the value