电喷发动机怠速游车的故障分析

Analysis of Influencing Factors on Rough Idling of EFI Engines

以电子燃油喷射发动机怠速控制理论为基础,结合一辆丰田 CAM RY 怠速游车严重,一辆三菱 PAJERO越野车加速无力、怠速游车且游车时车速变化较为缓慢,一辆三菱 PAJERO 越野车怠速不稳、排气管冒黑烟等故障实例,详细分析了进气系统、供油系统、点火系统、电控系统工作状况对车辆怠速游车的影响。

Based on the idling control theory of EFI engines,combined with a TOYOTA CAMRY which exists serious rough idling,a MMC PAJERO which exists weak motive power,rough idling with slow speed change and an another MMC PAJERO which exists rough idling and black exhaust gas,the effects of working conditions of intake system,fuel system,ignition system and electronic control system on vehicle rough idling are analyzed in detail.