汽车发动机废气再循环控制系统故障诊断实例简析

The car engine exhaust gas recirculation control system fault diagnosis example analysis

废气再循环系统(EGR)是控制汽车发动机尾气中氮氧化合物(NOx)排放的主要装置。文章介绍了发动机废气再循环控制系统的结构组成、工作原理以及常见的故障,并以一辆本田雅阁7230轿车为例,介绍了废气再循环系统故障诊断方法及流程,对汽车维修人员提供参考。

Exhaust Gas Re-circulation system is the main equipment that can control the emissions of the oxynitride in the automobile exhaust. This article introduces the composition, working principle and common faults of the ERG, and HONDA Accord 7230 is as an example to show the faults diagnoses and procedure which will be a reference for the maintenance person.