How to Prevent Incorrect Operation of Diesel Generator Sets

Currently, the variety of diesel generator sets available on the market is increasing, and each type has its own operation method. What's crucial for generator sets is the correct operation, as improper handling can lead to malfunctions and subsequently impact work efficiency. Today, we discuss diesel generator sets. What are the common incorrect operations to avoid when operating diesel generator sets?

Section 1: Diesel engines operating with insufficient engine oil

Insufficient oil supply can lead to inadequate lubrication on the surfaces of friction components, causing abnormal wear or scorching. Therefore, it is essential to ensure an ample supply of oil before starting the machine and during the operation of the diesel engine to prevent problems such as pulling cylinders and burning bearings due to oil deficiency.

Section II: Immediate shutdown after emergency stop or sudden load removal

After the diesel engine is turned off, the circulation of the cooling system water stops, leading to a sharp decrease in heat dissipation capability. This causes the heated components to lose cooling, which can result in overheating of parts like the cylinder head, cylinder liner, and cylinder block, leading to cracking or excessive expansion of the piston, causing it to stick inside the cylinder liner. On the other hand, if the diesel engine is not idled to cool down before shutdown, the friction surfaces may lack sufficient oil, leading to increased wear upon restart due to poor lubrication. Therefore, it is recommended to unload the engine and gradually reduce the speed, running it at no load for a few minutes before shutting down the diesel engine.

After the diesel engine has been cold-started, give it full throttle abruptly.

Revving the engine excessively can cause a dramatic increase in diesel engine RPM, leading to severe wear on some friction surfaces due to dry friction. Additionally, when accelerating, the piston, connecting rod, and crankshaft experience significant force variations, causing intense impacts and prone to damaging mechanical parts.

In situations where there is insufficient cooling water or when the cooling water and engine oil temperatures are too high, operation can lead to overheat in the diesel engine. This condition results in a significant increase in the thermal load on major components such as the cylinder head, cylinder liners, piston assembly, and valves, causing their mechanical properties like strength and toughness to急剧 decline. This leads to increased deformation of parts, reduced clearance between components, accelerated wear of mechanical parts, and in severe cases, can result in cracks and the failure of parts to fit properly. It also accelerates the aging and degradation of engine oil, leading to a decrease in oil viscosity. The lubrication conditions for the cylinder and piston, as well as the main friction pairs, worsen, causing abnormal wear.