Faults for Diesel Generator Set Overload Operation

by Starlight Generator dieselgeneratortech

Overload: operating diesel generator beyond the rated capacity of the generator, in this conditions, will causes an overload condition.


The faults for diesel generator set overload operation:


1.Easy to damage air cylinder of diesel engine;


2.Easy to cause increasing heat load and mechanical load, which cylinder liners bear;


3.Supercharger of super silent diesel generator set becomes red, the supercharger will be damaged for a long-term high temperature;


4.Also easy to cause pull cylinder and burn tile faults etc.


General reality, the load of diesel generating set is 80% of the rated load, and the fuel consumption is the smallest. If the load increases, the fuel consumption will increase, and the fuel consumption of diesel generating set is proportional to the load. But if when load less than 20%, not only the fuel consumption will substantially raise, but also damage diesel generator set.


Therefore, if want to reduce fuel consumption, we can let diesel generator run at load about 80% of the rated load, long time load will increase fuel consumption, even damage diesel generator. So should remember do not let diesel generator load for a long time, otherwise, easy to cause faults.


If we ignore follow problems, also will cause the genset overload, such as follows:


1. When purchase 100kw generator set, buy 100kw standby power genset directly, long-term overload operation will damage the diesel genset;


2. Poor heat dissipation. Because the fan of the engine can not blow away the heat of the water tank, so that making the water temperature rise. As a result, the temperature of lubricating oil also rises, which resulting in insufficient oil pressure and poor lubrication. Damage of moving parts, such as pulling cylinder, piston and bearing bush, will affect the normal operation of engine;


3. Maintenance issues. Failure to maintain on time results in dirty oil, reduced viscosity and blocked filter, which resulting in insufficient lubrication, and damage of moving parts lead to greater failure of the diesel generator set. Because of the quality problems of diesel oil, the diesel filter will be blocked, the fuel supply will not be smooth, and the genset will not have enough load. We should do the first maintenance when the genset first operate 50 hours, after every 200 hours to replace oil, oil filters, diesel filters. Air filters are regularly checked for ambient dust. Replace immediately if there is a problem;


4.Personnel care problem. No matter how good a machine or equipment is, if the responsible person does not take care of it, the machine will not last long. It is also very important to check all the machine's startup, check regularly during operation, and make a good record of checking.   


Overload operation is very damaged to diesel generator set, because long-term overload operation will accelerate the damage of parts, and very easy to cause faults.

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About Starlight Generator Senior   dieselgeneratortech

191 connections, 3 recommendations, 674 honor points.
Joined APSense since, April 16th, 2017, From Guangxi, China.

Created on Sep 18th 2019 23:04. Viewed 353 times.


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