Recently, many customers have been inquiring about how to reduce the incorrect operation methods of diesel generator sets to extend their service life. Therefore, Beidou Power would like to say that incorrect operation of diesel generators can indeed seriously affect their service life. We have summarized what the incorrect operation methods of diesel generator sets are. Hope it will be helpful to everyone.
Diesel generator Error Operation one:
When a diesel engine operates with insufficient engine oil: At this time, due to insufficient oil supply, the surfaces of each friction pair will be insufficiently supplied with oil, leading to abnormal wear or burning. For this reason, before starting a diesel generator and during the operation of the diesel engine, it is necessary to ensure that there is sufficient engine oil to prevent cylinder pulling and bearing burning faults caused by lack of oil.
Diesel Generator Error Operation Two:
When a diesel engine generator is shut down suddenly under load or immediately after the load is suddenly removed, the water circulation in the cooling system stops, and the heat dissipation capacity drops sharply. The heated parts lose cooling, which can easily cause overheating of components such as the cylinder head, cylinder liner, and cylinder block, resulting in cracks, or cause the piston to expand excessively and get stuck in the cylinder liner. On the other hand, if a diesel generator is shut down without idling to cool down, the friction surfaces will lack oil. When the diesel engine is restarted, poor lubrication will accelerate wear. Therefore, before shutting down a diesel generator, the load should be removed, and the speed should be gradually reduced and the generator should run idle for several minutes.
Diesel Generator Error Operation Three
After a cold start, the diesel generator is operated under load without warming up. During the cold start of the diesel generator, due to the high viscosity and poor fluidity of the engine oil, the oil pump supplies insufficient oil. The friction surfaces of the machine are poorly lubricated due to lack of oil, resulting in rapid wear and even faults such as cylinder pulling and bearing burning. Therefore, after the diesel engine is cooled and started, it should idle to warm up. Only when the oil temperature reaches above 40℃ should it be operated under load. When starting the machine, you should shift into a low gear and gradually drive in each gear for a certain distance until the oil temperature is normal and the fuel supply is sufficient. Only then can you switch to normal driving.
Diesel Generator Error Operation Four
If a diesel engine is cold-started and the throttle is suddenly increased, the speed of the diesel generator will rise sharply, causing some friction surfaces on the machine to wear out severely due to dry friction. In addition, when the accelerator is pressed hard, the forces acting on the piston, connecting rod and crankshaft change greatly, causing severe impacts and easily damaging the components.
Diesel Generator Error Operation Five
When the cooling water volume is insufficient or the temperature of the cooling water and engine oil is too high, the insufficient cooling water volume of the diesel generator will reduce its cooling effect, and the diesel engine will overheat due to ineffective cooling. Excessively high temperatures of the cooling water and engine oil can also cause the diesel engine to overheat. At this time, the main components of the diesel generator, such as the cylinder head, cylinder liner, piston assembly and valves, are subject to large thermal loads. Their mechanical properties, such as strength and toughness, drop sharply, increasing the deformation of parts, reducing the fit clearance between parts, accelerating the wear of components, and in severe cases, cracks and component jamming faults may occur. Overheating of diesel generators can also deteriorate the combustion process of diesel engines, causing abnormal operation of fuel injectors, poor atomization and increased carbon deposits.
For more questions about the generator set, please call the Beidou Power team. More than ten years of professional production and sales of power generation equipment experience, more professional engineer team to serve you, choose Beidou power is to choose rest assured, welcome on-site factory inspection.
Post time: Dec-08-2025