146型和КДМ-46型发动机在正常使用期内(一般该两种型号发动机的使用寿命在2400小时以上)出现以下三种情况即可断定是活塞岸槽或活塞环折断。这种故障是不多的,一经发现要及早排除,损失较小。1.发动机突然运转不均,并伴有“嗒嗒嗒”的敲缸声音。此声好象小锤轻敲水泥地面的声音,低速、中速运转较明显,清晰。温度升高,声响不减。 146 and КДМ-46 engine during normal use (usually the two models of the engine life of more than 2400 hours) the following three situations can be concluded that the piston bank or piston ring break. This failure is not much, once found to be eliminated as soon as possible, the loss is small. 1. Suddenly engine running unevenly, accompanied by “da da da” knocking sound. This sound is like a hammer to tap the sound of the cement floor, low-speed, medium-speed operation more obvious and clear. Temperature increases, the sound diminished.