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The three rings of the piston ring are mainly divided into two categories, the piston ring at the piston pin hole is the oil ring, and the other two rings are the gas ring. The air ring is also called the compression ring. Its function is mainly used to seal the piston, prevent the cylinder from leaking, and can transmit the heat from the top of the piston to the cylinder liner, and then the heat is taken away by the cooling water. The other type is the oil ring, which itself can store part of the oil to lubricate the cylinder liner and scrape off excess oil from the cylinder liner.
The three rings of the piston ring are mainly divided into two categories, the piston ring at the piston pin hole is the oil ring, and the other two rings are the gas ring. The air ring is also called the compression ring. Its function is mainly used to seal the piston, prevent the cylinder from leaking, and can transmit the heat from the top of the piston to the cylinder liner, and then the heat is taken away by the cooling water. The other type is the oil ring, which itself can store part of the oil to lubricate the cylinder liner and scrape off excess oil from the cylinder liner.
Why is the piston ring gas ring white and black?
The color of the piston gas ring is different, mainly related to the material of the gas ring. The surface of the white gas ring is generally plated with a layer of metal chrome, while the black gas ring is a little darker because it is a cast iron ring.
Normally, the first air ring of the piston is a white ring, and the white air ring is in the shape of a barrel. No matter what state the piston is in, it can closely fit with the inner circle of the cylinder barrel. The second air ring is a black air ring and is rectangular in shape. The reason why it is not placed in the position of the first air ring is mainly because the swing of the rectangular ring will rub against the inner wall of the cylinder, and the sealing performance is not good.
How to maintain the piston ring?
1. Add high-quality oil to the car. When the engine is running normally, the piston ring will move violently with the piston, and the high-quality oil will have a better lubricating effect, which can reduce its wear to a certain extent.
2. Regularly clean the foreign objects in the cylinder. Excessive oil pollution, carbon deposits and other substances will affect the normal operation of the piston ring, aggravate the wear of the cylinder liner, and even cause the cylinder to be pulled seriously.
3.Piston ring installation should match. If the piston ring does not match the cylinder liner, it will easily lead to deformation.
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