柴油机在工作时发出异响，主要是由于发动机运动机件的自然磨损或损伤使零件相互配合间隙增大，在运动中因震动和相互撞击、磨擦而发出各种不同的金属敲击声所造成。发动机产生异响声后，应注意检查诊断，分析其原因，并根据异响声准确找出故障所发生的部位， 及时认真予以排除 Abnormal noise is emitted by the diesel engine at work, which is mainly caused by the natural wear or damage of the engine moving parts, which causes the parts to cooperate with each other to increase the clearance. During the movement, various metal percussion sounds are caused by vibration and impact and friction with each other . Engine noise, you should pay attention to check the diagnosis, analyze the reasons, and according to the sound of abnormal sound accurately identify the location of the fault, in a timely manner to be ruled out