Excessive water temperature in diesel generators usually causes coolant boiling in the radiator, a decrease in power, a decrease in lubricating oil viscosity, increased friction between diesel engine components, and even serious faults such as cylinder pulling and cylinder gasket burning.
The following are the main reasons for the high temperature of diesel generators, along with preventive and improvement measures.
1、 Time overload operation
Long term overload operation of diesel generators can increase their fuel consumption and thermal load, resulting in excessive water temperature. To this end, it is necessary to avoid long-term overload operation of diesel generators.
2、 Insufficient coolant
Regularly check the coolant inventory in the radiator and expansion tank, and replenish it in a timely manner when the liquid level is low. If there is a lack of coolant in the cooling system of a diesel generator, it will affect the heat dissipation effect of the diesel engine and cause high temperatures.
3、 Fan belt too loose or fan deformed
Regularly check whether the fan belt of the diesel generator is loose and whether the fan shape is abnormal. Because the fan belt is too loose, it can easily cause a decrease in fan speed, resulting in the radiator not being able to exert its proper heat dissipation capacity, and causing the temperature of the diesel generator to be too high. In addition, fan deformation can also cause the heat dissipation capacity of the radiator to not be fully utilized.