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Ways to Avoid Excessive Wear And Tear of Diesel Generator Sets

Dec. 16, 2021

Do you know what is the way to avoid excessive wear and tear of diesel generator sets? Diesel generator sets will inevitably wear out after a period of use, that is normal. However, if there is unreasonable excessive wear, this situation is abnormal. It may be due to improper use by the user, or it may be due to some malfunction of the machine. Therefore, the user should understand which factors will cause the diesel generator set to wear out, so as to prescribe the right medicine to avoid its excessive wear. The quality of fuel and lubricating oil should be compatible with the structure of the diesel generator set. If the diesel contains sulfur or other impurities, acids and other corrosive substances will be produced during the combustion process, which will accelerate the wear of the cylinder;


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Too many heavy fractions in diesel fuel will easily form carbon deposits after combustion, causing abrasive wear on piston rings and cylinders. The viscosity of diesel fuel has an impact on the formation of mixtures and the reliability of fuel supply equipment. For lubricating oil, viscosity and oxidation resistance are of great influence. It should be selected and used reasonably according to the working conditions of the diesel generator set and diesel engine, and should not be used indiscriminately. Tests have shown that the friction of diesel generator sets increases with the increase of speed and load. Because when the load increases, the unit pressure on the friction surface increases, resulting in poor thermal conditions.


When the speed increases, the number of frictions per unit time increases by half, and under the same power, the increase in speed is greater than the wear when the load increases. However, a too low rotation speed cannot guarantee good liquid lubrication conditions, which also increases wear. Therefore, for a given diesel generator set, there is a suitable working speed range. In addition, when the diesel engine often accelerates, decelerates, stops and starts and other unstable operations, due to frequent changes in speed and load, diesel generator sets have poor lubrication conditions, unstable thermal conditions, and increased wear. Don't start, the crankshaft speed is low, the oil pump is not supplied in time, the oil temperature is low, the oil viscosity is high, the friction surface is difficult to establish liquid lubrication, and the wear is very serious.


The temperature of the operating environment also has an effect on the wear of diesel generators. When the temperature is high, the engine is easy to overheat, the lubricating oil viscosity is low, and the wear of parts increases. When the temperature is low, the viscosity of the lubricating oil becomes larger, the diesel generator set is difficult to start, and the cooling water cannot maintain the normal temperature during operation, which increases the wear and corrosion of the parts. When the diesel generator set starts at low temperature, the abrasion is more serious. In the course of use, due to the limitation of the cooling system structure, the change of the work load and speed, the change of the ambient temperature and other factors, the working temperature of the diesel generator set can vary widely. Practice has shown that it is advantageous to control the cooling water temperature at 75~85℃ and the lubricating oil temperature at 75~95℃.


As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via sales@dieselgeneratortech.com.

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