内燃机瞬态排放测试技术发展现况浅析

A Study on Development of Traasient Emission Measurement in Internal Combustion Engine

车用内燃机尾气排放是主要的大气污染源之一。在城市中各种车辆的工况变化频繁,加速、怠速等是比较典型工况,而瞬态过程的排放与稳态过程又有较大差距。欧Ⅲ排放法规也已对此作出了规定。本文简要介绍了瞬态工况排放测量的发展现状。同时提出了现有条件下我国研究瞬态排放的一些测试方面设想。

Vehicle emission is one of the main atmospheric polluters. Inside the city vehicle's condition at operation varies frequently and acceleration and idling are typical conditions. European Emission Regulation has determined the difference between transient emission and steady emission. The current situation on development of transient emission measurement in internal combustion engine is introduced and some suggestions on the study of transient emission under the current conditions in China are raised in this paper.