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What are the classification of standard engine piston sealing rings?

Release time:

2019-05-06 12:30

Source:

What are the classification of standard engine piston sealing rings?

The engine piston seal ring (Pistonringofengine) is a metal ring used to be embedded in the piston groove. Dongsheng Seal tells you that its piston sealing ring can be classified into the following types of engine piston sealing ring structure, sealing ring section switch, sealing material, sealing and medium function.

1. according to the engine piston sealing ring sealing structure classification:

1, the overall structure: through the casting or overall molding process.

2. Combination ring: an engine piston sealing ring composed of two or more parts assembled in a ring groove.

3, slotted oil ring: side parallel, with two contact ring bank, and oil return hole of the oil ring.

4. Oil ring of slotted spiral support spring: add oil ring of spiral support spring in slotted oil ring. The support spring can improve the radial ratio pressure, and its force on the inner surface of the ring is equal. Common in diesel engine rings.

5. Steel belt combination oil ring: an oil ring composed of a lining ring and two scraping rings. The design of the backing ring varies with the manufacturer and is common in gasoline engine rings.

The 2. is classified according to the cross-sectional shape of the engine piston sealing ring: barrel ring, cone ring, inner chamfer twisted ring, wedge ring and trapezoidal ring, nose ring, outer shoulder twisted ring, inner chamfer twisted ring, Steel belt combination oil ring, different chamfer oil ring, same chamfer oil ring, cast iron spiral spring oil ring, steel oil ring, etc.

3. according to the engine piston seal ring according to the material classification of cast iron, steel.

4. According to the function and medium classification of the engine piston sealing ring, the engine piston sealing ring includes two types: gas ring and oil ring. The function of the gas ring is to ensure the seal between the piston and the cylinder. Prevent a large amount of high-temperature and high-pressure gas in the cylinder from leaking into the crankcase, and at the same time conduct most of the heat at the top of the piston to the cylinder wall, and then be taken away by water or air. The oil ring is used to scrape off the excess oil on the cylinder wall and apply a uniform oil film on the cylinder wall, which can prevent the oil from entering the cylinder and burn, and reduce the wear of the piston, the engine piston sealing ring and the cylinder, Reduce friction resistance.

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