What Are The Different Conditions Before The Failure Of The Diesel Generator Set?

Due to various factors in the operation of diesel generator sets, different degrees and types of faults occur. In order to reduce the incidence of diesel generator set failures and reduce users’ unnecessary loss of profits. The following are the obvious conditions before the occurrence of different failures of the unit.

The condition of engine burning:

        During the operation of the diesel generator set, the speed suddenly drops, the load increases, the engine emits black smoke, the oil pressure drops, and the “chirp” dry friction sound is emitted from the crankcase, which is a precursor to the burning of tiles. In this case, stop the machine immediately, otherwise it will further aggravate the wear of the bearing bush, the surface of the shaft journal will quickly expand, the bearing bush and the shaft journal will soon stick and lock, and the engine will stall.

Status of piston sticking to cylinder:

        Engine sticking usually occurs when the diesel generator set is severely short of water. Before sticking, the engine is running weak, the water temperature gauge indicates more than 100℃, a few drops of cold water are dripped on the body, there is a “hissing” sound, and white smoke is emitted. , The water droplets evaporate quickly. At this time, the engine should be operated at low speed or idling speed to reduce the vehicle temperature. If the engine is turned off immediately, it will cause the piston and the cylinder liner to stick to the cylinder.

The condition of ramming:

        Cylinder ramming is a destructive mechanical failure. Except for ramming cylinder caused by valve falling, most of them are caused by loosening of connecting rod bolts. After the connecting rod bolts are loosened or stretched, the matching clearance of the connecting rod bearings will increase. At this time, a “click” can be heard at the crankcase. The knocking sound changes from small to louder, and finally the connecting rod bolts completely fall off. Or broken, the connecting rod and the bearing cover are thrown out, breaking the body and related parts.