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课题六 点火正时的检测 PowerPoint PPT Presentation


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课题六 点火正时的检测. 一、故障现象. 1. 点火时间过早: ( 1 )启动汽车时,发动机转动发沉( 启动困难 ),有顿挫感; ( 2 )怠速时,发动机抖动,有灭车现象; ( 3 )急加速时有敲缸声; ( 4 )着车后,使用过程中,发动机水温高、常开锅。. 2. 点火时间过晚: ( 1 )发动机发闷、无力、甚至过热,在突然加大节气门开度时,发动机转速不能随之增高,燃油消耗量增加; ( 2 )急加速时,排气管有时放炮;. 二、点火正时的检测.

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课题六 点火正时的检测

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