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14
2024
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10
What are the three types of piston rings?
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Piston rings are usually divided into three types: compression ring, oil ring and load ring.
1. compression ring
The compression ring is the most commonly used type of piston ring. Its main purpose is to seal the space between the piston and the cylinder to prevent gas leakage. Compression rings are usually made of high-strength cast iron, steel and other materials, and the surface is coated with anti-wear materials to improve service life. The structure of the compression ring has two types: single-segment and multi-segment. The multi-segment type can better adapt to the deformation of the cylinder wall, and the sealing performance is more reliable.
2. oil ring
The oil ring is mainly used to lubricate the friction surface between the piston and the cylinder to reduce the heat generated by wear and friction and increase the service life of the piston. The oil ring is usually located under the compression ring and is made of highly elastic steel, and the surface is coated with wear-resistant material to extend its service life. The structure of the oil ring has two types: single ring and double ring, in which the double ring type can better maintain the sealing of the lubricating oil and avoid oil leakage.
3. bearing ring
The bearing ring is mainly used to support the piston and play a positioning role when the piston moves up and down. The bearing ring is usually made of cast iron, aluminum alloy and other materials, and the surface is coated with anti-wear material to improve the service life. The structure of the bearing ring has two types: single-segment and multi-segment. The multi-segment type can better adapt to the deformation of the piston and ensure the movement track of the piston.
In general, the piston ring is a very important part of the engine. Different types of piston rings have different functions and characteristics. Choosing the right piston ring can effectively improve the performance and life of the engine.
Latest developments
2024-10-14
Maintenance methods and steps of piston ring
When installing the piston rings, ensure that appropriate end play, backlash and backlash are reserved to prevent the piston rings from becoming stuck or damaged in the ring groove. According to the repair grade of the cylinder, select the matching piston ring
2024-10-14
The difference between steel ring and cast iron ring
The piston ring is one of the key components in the engine. It is mainly used to seal the gap between the piston and the cylinder liner, prevent the leakage of high temperature and high pressure gas in the combustion chamber, and also play a lubricating role.
2024-10-14
What are the functions of the piston ring?
Distribute the oil splashed or sprayed on the cylinder wall evenly on the cylinder wall, and scrape off the excess oil. The scraped oil flows back to the crankcase through the gap between the piston and the cylinder liner and the drain hole of the piston oil groove
2024-10-14
What should be paid attention to when installing the piston ring?
The installation of piston ring is a very important work in automobile maintenance, and there are many matters needing attention.
2024-10-14
Commonly used piston ring materials
Cast iron is a commonly used material for piston ring production. It has the characteristics of low cost and can adapt to high temperature and high pressure. However, its defects such as high density, high brittleness, easy aging and corrosion are also obvious, and it is not easy to use at high speed and high temperature.
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