所谓敲缸是指柴油机工作时,由于燃油不正常燃烧,导致活塞不断敲缸,而产生的一种异常金属敲击声。它不仅使柴油机的噪音增大,温度升高,而且会导致气缸穴蚀,加速缸套、活塞及活塞环的磨损,使发动机动力性和经济性下降。 敲缸原因从理论上讲,是由于柴油机在燃烧初期,喷入燃油过多,使着火落后期延长,结果由于焰前的燃料量增加,使速燃期的燃烧扩展过于迅速,压力升高率过大,则使各机件 The so-called knock cylinder refers to the diesel engine work, because the fuel is not normal combustion, resulting in the piston knocking cylinder, which produced an unusual metal percussion. Not only does it increase the noise and temperature of the diesel engine, but it also causes cavitation in the cylinder and accelerates the wear of the cylinder liner, piston and piston ring, resulting in a decrease in engine power and economy. In theory, knocking is due to the early combustion of diesel engine, the fuel injection is too much, so that the late extension of the fire, as a result of the amount of fuel before the flame increases, the rapid expansion of combustion in the fast burning period, the rate of pressure rise Too large, then make all parts