The common engine cylinder liners are mainly divided into wet and dry types, and the main difference lies in whether they are in contact with coolant. Among them, dry cylinder liners are often used in gasoline engines or some diesel engines with low horsepower. At present, the most common ones on trucks are wet cylinder liners. The outer surface of the outer diameter of the cylinder liners is in contact with the engine coolant, which is conducive to the heat conduction between the cylinder liners and the coolant, and has a better heat dissipation and cooling effect.
1. The intake filter is not clean
When the engine is running, it needs to inhale a large amount of air, and the air contains various impurities, such as mud, dust, etc. At this time, an air filter is needed to ensure the quality of the air entering the cylinder and filter out the impurities to reduce the wear of parts such as cylinder liners, pistons and piston rings.
If the air filter is not cleaned and maintained for a long time or a low-quality air filter is purchased, the filtering effect will deteriorate, which will accelerate the wear of the cylinder liner. In general, the air inhaled in the cylinder is too dirty, and the most worn parts are mainly concentrated in the middle and upper parts of the cylinder liner.
2. Failure to change the engine oil at the prescribed cycle
If the engine oil is not changed regularly, the impurities or wear debris contained in the engine oil may splash onto the cylinder wall, causing abrasive wear, abnormal wear of the cylinder wall or even cylinder cleavage. Generally, the wear caused by the large amount of hard particles in this lubricating oil is mainly concentrated in the middle and lower parts of the cylinder liner.
In addition, the temperature difference between the north and south of my country in winter is large. Some long-distance trucks often do not replace the winter oil on time in winter, and do not preheat when starting in the cold northern region. At this time, the cylinder liner and the piston of the engine are prone to cylinder cleavage and sticking, causing early wear of the cylinder liner.
3. Poor lubrication conditions
When the engine is running, the upper part of the cylinder liner is adjacent to the combustion chamber, the overall temperature is very high, and the lubrication conditions are relatively poor. In addition, the diesel engine load is too large, and it is not easy to form a good oil film, resulting in the cylinder liner and the piston ring cannot get reliable and efficient lubrication effect, resulting in local dry friction or semi-dry friction, causing wear on the upper part of the cylinder.
4. Chronic corrosion
We all know that the sulfur content in fuel is high, especially for truck drivers who use small oil all year round, the sulfur content is far beyond the normal standard, and it is easy to generate strong acidic substances after combustion, which can cause and aggravate the corrosion and wear of metal parts of the engine.
Simply put, when the combustible mixture in the cylinder burns, the water vapor and acidic oxides generated combine to form acidic vapor. Under the action of cooling water, acids are easily formed on the cylinder liner, which in turn causes corrosion and wear of the cylinder liner. In addition, the use of inferior coolant or long-term non-replacement of coolant is also an important cause of cylinder liner corrosion. The characteristic of this wear is the formation of loose holes on the cylinder liner.
Reasonable and correct maintenance of trucks can effectively extend the service life of the vehicle. The main methods to reduce abnormal wear and cavitation of the engine cylinder liner are to meet the vehicle configuration, maintain and replace the three filters, select genuine engine oil and coolant, the appropriate operating temperature of the engine, and maintain the normal mechanical performance of the engine. Truckers should never buy inferior products just for the sake of cheapness, otherwise it is easy to lose more than you gain. If you want to buy truck spare parts, you might as well choose us! We provide a variety of mechanical products and related accessories. You can also choose to browse our website, where more rich products are waiting for you to explore!
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Post time: Jul-24-2025