有些柴油机使用一段时间后，在缸套上端、缸盖底面、活塞顶部及活塞环槽内，甚至气门摇臂室内，都会生成一层积炭。积炭严重时，不但使柴油机功率降低，油耗增加，有时还会引起爆燃，使机件加速磨损或受到损伤。现介绍产生积炭的主要原因与排除方法。（1）活塞环磨损当活塞环开 After some diesel engines are used for a period of time, a layer of coke will be formed on the upper end of the cylinder liner, the bottom surface of the cylinder head, the top of the piston and the piston ring groove, and even the valve rocker chamber. Serious coke, not only to reduce the power of diesel engines, fuel consumption increased, and sometimes cause deflagration, the accelerated wear or damage parts. Now introduce the main reason for producing coke and its elimination method. (1) Piston Ring Wear When the piston ring is open