Wrong Operation of Diesel Generator

Everyone knows that the incorrect operation of diesel generators will seriously affect the service life. Let's take a look at what are the ways of incorrect operation of diesel generators in daily life?

First, the diesel generator runs when the oil is insufficient. At this time, the insufficient oil supply will cause insufficient oil supply on the surface of each friction pair, resulting in abnormal wear or burns. For this reason, before the diesel generator starts and during the operation of the diesel generator, it is necessary to ensure sufficient oil to prevent cylinder pulling and tile burning failures caused by lack of oil. Secondly, when the load is suddenly stopped or the load is suddenly removed, the cooling system water circulation stops after the diesel generator is turned off, the heat dissipation capacity is drastically reduced, and the heated parts lose cooling, which is easy to cause the cylinder head, cylinder liner, cylinder block, etc. The parts are overheated, cracks occur, or the piston is over-expanded and stuck in the cylinder liner.

On the other hand, if the diesel generator is stopped without cooling at idle speed, the friction surface will be insufficiently oiled. Of course, when the diesel generator cold starts, due to the high oil viscosity and poor fluidity, the oil pump is insufficiently supplied, and the friction surface of the machine is poorly lubricated due to lack of oil, causing rapid wear and even failures such as cylinder pulling and tile burning. Therefore, the diesel generator should run at idling speed after cooling and start to heat up, and then run with load when the standby oil temperature reaches 40°C or higher; the machine should start with low gear and drive for a certain mileage in each gear in sequence until the oil temperature is normal and the supply After the oil is sufficient, it can be switched to normal driving. If the diesel generator blasts the throttle after a cold start, if the throttle is blasted, the speed of the diesel generator will rise sharply, which will cause some friction surfaces on the engine to be severely worn due to dry friction.

In addition, the piston, connecting rod, and crankshaft receive large changes when the throttle is hit, causing severe impacts and easily damaging parts. Finally, run under the condition that the cooling water is insufficient or the cooling water or oil temperature is too high. Insufficient amount of cooling water for diesel generators will reduce its cooling effect. Diesel generators will overheat due to ineffective cooling. Excessive temperature of cooling water and engine oil will also cause diesel engines to overheat. At this time, diesel generator cylinder heads, cylinder liners, piston components and valves are subject to heavy thermal loads, and their mechanical properties such as strength and toughness drop sharply, which increases the deformation of parts, reduces the matching gap between parts, and accelerates the wear of parts. In severe cases, cracks and malfunctions of mechanical parts jamming may occur.

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