柴油机在作业过程中,从中速到低速会发出较重的敲缸声,排气管冒黑烟,并时有放炮声或向外喷火,发动机机体过热,功率下降,这就是所谓的柴油机敲缸。产生敲缸的主要原因及排除方法如下。1.供油时间过早当柴油机活塞向上运动还没达到规定的喷油位置,喷油器就开始喷油,使燃油燃烧提 Diesel engine in the operation process, from medium to low speed will be issued a heavy knock cylinder noise, the exhaust pipe black smoke, and sometimes blasting sound or outward flame, the engine body overheating, the power drop, which is the so-called diesel knock Cylinder. Knocking the main reason for the production and troubleshooting are as follows. 1, the fuel supply time is too early When the piston upward movement of the diesel engine has not yet reached the required injection position, the fuel injector began to fuel, so that the fuel combustion