许雪利1,2，司福帅1,2，马雁1,2，刘伟达1,2，杨立云1,2，史美丽1,2

1.内燃机可靠性国家重点实验室，山东潍坊261061；2.潍柴动力股份有限公司发动机研究院，山东潍坊261061

摘要：针对便携式排放测试系统（portable emission measurement system，PEMS）测量实际道路排气污染物中NOx比较困难的问题，提出一种简易测量整车实际作业过程中NOx排放的试验方法。分析氮氧传感器工作原理，确定传感器安装方式及计算测量方法，对比分析氮氧传感器和PEMS设备测量实际道路NOx排放污染物的结果可知：使用氮氧传感器测量车辆实际道路的NOx排放结果具备可行性和可信性，该测量方法为测量实际道路NOx排放测量提供了思路和方法。

关键词：氮氧传感器；便携式排放测试系统；实际道路；氮氧化物排放

Abstract: Considering the difficulty of measuring NOx emission from real driving exhaust pollutants by portable emission measurement system (PEMS),a simple test method for measuring NOx emission from actual vehicle operation is proposed. By analyzing the working principle of NOx sensor, the sensor installation method and calculation measurement method are determined, then the results of measuring NOx emission pollutants from actual road by NOx sensor and PEMS emission equipment are compared and analyzed. The results show that it is feasible and credible to measure the NOx emission results of actual road by using NOx sensor. The measurement method of NOx sensor provides a new method for the measurement of actual road NOx emission.

Keywords:NOx sensor; PEMS; actual road; NOx emission