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How to Reduce the Wear of Diesel Generator Parts

Oct. 16, 2019

While the diesel generator is running the load, it is also the process of mutual wear of the parts of the diesel generator itself. Starlight Power – Diesel Generator Manufacturer recommends that users minimize the wear between the components of the gensets. Reducing the wear of the parts is also a way to extend the service life of the unit. Here are some effective ways to reduce wear of the generator parts.

diesel generator set

The quality of the fuel and lubricant of the diesel generator set should be matched with corresponding specification of generating set.

If diesel contains sulphur or other impurities, acid and other corrosive substances will be generated during the combustion process to accelerate the wear of the cylinder; too much heavy fraction in the diesel fuel will easily form carbon deposits after combustion, abrasive wear is generated between the piston ring and the cylinder; viscosity of the diesel has an effect on the formation of the mixture and the reliability of the oil supply equipment. For lubricating oil, the viscosity and oxidation resistance is the most influential. It should be reasonably selected according to the working conditions of the diesel generator set.

Tests showed that the friction of diesel generators increases with the increasing of rotating speed and load. As the load increases, the unit pressure on the friction surface increases and the thermal condition is poor. When the rotational speed increases, the number of times of frictions is increased by half per unit time, and under the same power, the increase of rotational speed is greater than the load increases.

However, too low rotating speed can not guarantee good liquid lubrication conditions, and also increases wear. Therefore, a suitable working speed range is required for the trouble-free operation of power generator.

In addition, when the operation of diesel generator set is often unstable, such as acceleration, deceleration, stop and start, due to frequent changes in the speed and load, the lubrication condition of diesel genset is poor, the thermal state is unstable, and the wear is increased.

Especially when starting, the crankshaft speed is low, the oil supply from oil pump is not in time, the oil temperature is low, the oil viscosity is large, and the friction surface is difficult to establish liquid lubrication, and the wear is very serious.


Diesel generator set wear caused by ambient temperature

Engine is easy to overheat when the temperature is high, the viscosity of the lubricating oil is low, and the wear of the parts is increased. When the temperature is low, the viscosity of the lubricating oil becomes large, and the diesel generator is difficult to start. The cooling water cannot maintain the normal temperature during operation, which increases the wear and corrosion of the parts. The wear is more serious when the gensets is at low temperature.

The operating temperature of diesel generating set is one of the important factors affecting the wear. During the process of operating, due to the limitations of the cooling system structure, change in the workload and speed and the change in the ambient temperature, the operating temperature of the diesel generator set varies greatly. Practice shows that the cooling water temperature is controlled at 75-85°C, and the lubricating oil temperature is 75-95°C.

To sum up, users should strengthen the technical study of diesel gensets to ensure the correct use of the units and reduce the wear of parts. The engineer of diesel generator manufacturer instructs everyone to proceed from the following aspects:

1. Reasonable choose the operating condition of the diesel generator.

2. Improve the running-in quality of diesel generators.

3. Select fuels and lubricants suitable for the working needs of diesel engines.

Select suitable lubricant and lubrication method, replace dry friction with ideal fluid friction, which is the most effective way to reduce friction and wear. For generators, according to the specific requirements of different engine and the season and the use of different regions to choose the appropriate brand of lubricants.

4. Improve the level of operation technology and timely maintenance.

During use, the maintenance of the fuel supply system, the intake system and the lubrication system should be done.

No matter how good the quality of the product, only know how to better maintain, can reduce the wear of the products and extend the service life of the machine.

Shangchai generator

The above contents are shared by Jiangsu Starlight Electricity Equipment Co.,Ltd. We provide diesel generator power range is from 20KW to 2500KW, brands include Cummins, Volvo, Deutz, Perkins, Ricardo, MTU, Yuchai, SDEC and Weichai, etc. We export our products to Asia, Africa, the Middle East, Southeast and other places. Electric generators are widely used in industrial and mining enterprise, road, railway, real estate, hotel, schools, and hospital, etc. It is ideal power supply.

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