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Causes Analysis Of Wear Factor Of Diesel Engine Parts
Jun 11, 2018

The wear factor of diesel engine parts is analyzed as follows:

The operating temperature of the diesel generator set is one of the important factors affecting the wear of the diesel engine parts. In the process of use, due to the limitations of the structure of the cooling system, changes in the work load and rotation speed, changes in the ambient temperature and other factors, the operating temperature range of the diesel engine varies greatly. Practice shows that the cooling water temperature is controlled at 75 ~ 85 °C, the lubricating oil temperature is 75 ~ 95 °C, the most favorable.

The temperature of the use environment also affects the wear of diesel generator sets. When the air temperature is high, the engine is liable to overheat, the viscosity of the oil is low, and the wear of the parts increases. When the temperature is low, the viscosity of the lubricant becomes large, and the diesel generator set is difficult to start. The cooling water cannot maintain the normal temperature at the time of working, and increases the wear and corrosion of the parts. When the diesel engine starts at a low temperature, the wear is more serious.

The friction of the diesel generator sets increases as the speed and load increase. As the load increases, the unit pressure on the friction surface increases, resulting in poor thermal conditions. When the rotation speed increases, the number of frictions per unit time increases, and at the same power, the rotation speed increases more than when the load increases. However, too low speed can not guarantee good liquid lubrication conditions, also increase the wear, so for a certain diesel generator set, there is a most suitable working speed range. In addition, when the diesel generator sets are frequently decelerated, decelerated, stopped and started, etc., due to frequent changes in the rotational speed and load, the lubrication conditions of the diesel engine are poor, the thermal state is unstable, and the wear increases. Especially when starting, the crankshaft speed is low, the oil pump is not fed in time, the refuelling temperature is low, the oil viscosity is high, and the friction surface is difficult to establish liquid lubrication, and the wear is very serious.

The factors affecting the use of diesel engine parts are all problems that need to be paid attention to in the daily maintenance of the machine. Usually, a little attention will be paid to avoid these problems. There are many components of the diesel generator set, and damage is normal. As long as we usually pay attention to maintenance and maintenance, the performance of the diesel generator set can still be used normally.

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