宝马118i发动机异常抖动故障检修

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【摘  要】本文主要介绍一辆2016年宝马118i怠速状态下发动机抖动明显，趋近于熄火状态且加速无力的故障排除过程。由于DME内部的点火线圈驱动三极管的击穿，造成初级线圈一直处于通电状态，点火线圈因过热而烧毁，引起气缸1无点火，造成发动机严重抖动，加速无力的故障现象。

【关键词】宝马;发动机;抖动;DME损坏

中图分类号：U463.642    文献标志码：B    文章编号：1003-8639（ 2022 ）07-0106-04

Troubleshooting BMW 118i Engine Unusual Dither

LIAO Rong-guang XIAO Li-hong

（1.Guangzhou Baiyun Xingzhi Vocational and Technical School，Guangzhou 510515，China;

2.Guangzhou Huangpu Vocational and Technical School，Guangzhou 510730，China）

【Abstract】This paper mainly introduces the troubleshooting process of a BMW 118i idle engine in 2016，which has obvious engine dithering，tends to go off and accelerates its weakness. Due to the breakdown of the ignition coil driving triode in DME，the primary coil is always on power，and the ignition coil is burned out due to overheating，which causes cylinder 1 to be non-ignited，resulting in severe engine dithering and faulty acceleration weakness.

【Key words】BMW;engine;shake;DME damage

1  故障现象

一辆2016年宝马118i轿车，开发序号F20，发动机代号N13B16，行驶里程约9.6万公里。（剩余3519字）