机动车排放检测运行体系的相关研究

Carelative Study on Performance System of Motor Vehicle Emission Detection

机动车污染物排放标准与其检测方法是相辅相成的,不同的机动车检测方法对应不同的机动车排放污染物限值。该文主要对机动车排放检测运行体系中的怠速和简易工况检测方法进行了对比性研究,并对机动车实施常规检测的年检和监督手段的路检进行了对比分析,从而得出:工况法检测对于尾气排放情况的模拟要优于怠速法检测,并可对NOx进行有效控制,所以建议在有条件的地区,应该尽量实施工况法检测;年检和路检的数据有较大的差异,反映出对在用车的监督不力,今后应加强;高排放车辆的贡献率所占的比例与发达国家相比太小,说明机动车总体控制水平较低。

There is a correlation between emission limits value and measurement method in vehicle emission standards. Currently, the idle speed test and two idle speed tests have been used in vehicle emission detec tion. But following the development of vehicle emis sion standards and vehicle technology, the advanced measuring method needs to be adopted. In this article the study on the relationship of idle speed test and simple loaded test has been introduced and the com parative analysis between annual check and road check results were all included. The final conclusions including three parts: The loaded test is better than the idle speed test and NOx can be controlled effectively by this method. It can be found through the comparison of the data from annual check and road check that the monitoring and controlling system for in-use vehicle are not good. And the rate of high emission in total vehicle amount is lower than the status of developed countries. It shows that the situation of vehicle pollution in China is very serious.