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(1)柴油机发出有规律的、清脆的敲击声,曲轴转两圈出现一次,停止供油时,敲击声立即消失,起动时易反转。主要原因是供油时间过早。应按规定调整之。 (2)柴油机发出有规律的较低沉的敲击声,机温高,起动困难,着火后冒黑烟,严重时排气管出现火焰。主要原因是供油时间过迟。应按规定调整之。 (3)柴油机工作时发出沉重有力的“咯咯”声。大小油门均有,改变油门时尤甚。主要原因是:①飞轮螺母松动,应拧紧螺母并锁定;②飞轮键槽与曲轴平键配合松动;③曲轴轴颈锥面与轴孔锥面损伤,应修复之。
(1) The diesel engine emits a regular, crisp percussion sound. The crankshaft rotates once in two turns. When the oil supply is stopped, the percussion sound immediately disappears and the cranking is easy to reverse. The main reason is the oil supply too early. Should be adjusted as required. (2) Diesel engine issued a regular lower percussion sound, high temperature, difficult to start, smoke after the black smoke, the exhaust pipe serious flame. The main reason is the fueling time is too late. Should be adjusted as required. (3) Heavy, “giggle” sounds when working on diesel engines. The size of the throttle, especially when changing the throttle. The main reason is: ① flywheel nut loose, should tighten the nut and lock; ② flywheel keyway with the crankshaft key with loose; ③ crankshaft journal cone and shaft conical surface damage, should be repaired.