What Are the Hazards of Overloading of Weichai Diesel Genset

Overload operation of Weichai diesel generator sets may cause a series of problems such as unit failure or hidden troubles, which will cause the internal parts of the diesel engine to rapidly age, appear mechanical fatigue, and reduce the overall stability of the unit. The generator manufacturer, Dingbo Power recommends that Weichai diesel generator sets should not be overloaded, and the user should equip the generator set with suitable power according to the size of the load.

We all know that the friction of Weichai diesel engines become worse with the increase of speed and load. Because when the load increases, the unit pressure on the friction surface increases, resulting in poor thermal conditions. When the speed increases, the number of frictions per unit time increases, and under the same power, the increase in speed is greater than the wear when the load increases. However, a too low speed cannot guarantee good liquid lubrication conditions and also increases wear. Therefore, for diesel engines, it must be controlled within a suitable working speed range during operation.

In addition, when the diesel engine frequently accelerates, decelerates, stops and starts and other unstable operations, due to frequent changes in speed and load, the diesel engine has poor lubrication conditions, unstable thermal conditions, and increased wear. Especially when starting, the crankshaft speed is low, the oil pump is not supplied in time, the oil temperature is low, the oil viscosity is high, the friction surface is difficult to establish liquid lubrication, and the wear is very serious.

The following types of faults are prone to occur when Weichai diesel generators are overloaded:

1. Running a diesel generator set in a high-load environment will cause the internal parts of the diesel engine to quickly age and appear mechanical fatigue, which will seriously affect the normal use of the set.

2. When the high load operation reaches the endurance of the unit, thermal deformation of the internal parts of the unit will occur, which reduces the overall stability of the unit.

3. When the overloading operation exceeds the bearing capacity of the diesel engine, the crankshaft in the diesel engine will break, causing the diesel engine to be scrapped as a whole.

Overload operation of Weichai diesel generator sets has many hazards, so what is the most suitable load for the set? Dingbo Power reminds users that when the load of the diesel generator set reaches 80% of the output power of the diesel generator set, it is the actual output power of the generator set, which can ensure that the generator set does not run overload, and it can also ensure that the generator set will not be under low load for a long time. Operation, thereby extending the service life of diesel generator sets.

Through the above study, have you learned something about the hazards of overloading in the diesel generator set? If it is not, don’t worry, you are always welcome to contact Dingbo Power for consultation and communicate directly with one of our technical experts by dingbo@dieselgeneratortech.com.