寶馬118i發(fā)動機(jī)異常抖動故障檢修

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【摘  要】本文主要介紹一輛2016年寶馬118i怠速狀態(tài)下發(fā)動機(jī)抖動明顯，趨近于熄火狀態(tài)且加速無力的故障排除過程。由于DME內(nèi)部的點(diǎn)火線圈驅(qū)動三極管的擊穿，造成初級線圈一直處于通電狀態(tài)，點(diǎn)火線圈因過熱而燒毀，引起氣缸1無點(diǎn)火，造成發(fā)動機(jī)嚴(yán)重抖動，加速無力的故障現(xiàn)象。

【關(guān)鍵詞】寶馬;發(fā)動機(jī);抖動;DME損壞

中圖分類號：U463.642    文獻(xiàn)標(biāo)志碼：B    文章編號：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  故障現(xiàn)象

一輛2016年寶馬118i轎車，開發(fā)序號F20，發(fā)動機(jī)代號N13B16，行駛里程約9.6萬公里。（剩余3519字）