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Piston ring

Piston Ring

Piston ring is one of the most critical functional part in the engine, which supports a reciprocation of the piston.

01

Air-tightness effect

Maintaining airtightness between the piston and the cylinder

02

Oil control effect

Facilitates a contact movement between the piston ring and the cylinder, thus suppressing the amount of oil consumption.

03

Heat delivery effect

Delivers the heat from the piston to the cylinder.

Top (1st) Ring Top (1st) Ring It plays a critical role to maintain airtightness of the compression and combustion gases during the piston movement and also suppresses the amount of oil consumption.
2nd Ring 2nd Ring It plays a role to suppress the gas that passed through the top ring and adjust the oil that rises after passing through the oil ring.
2Piece Oil Ring(D.V.M) 2Piece Oil Ring(D.V.M) OThe main function is to adjust the oil. It is mainly applied to the GDI of the diesel engine but it is also used for the gasoline engine. It is composed of the main body of D.V.M and the coil expander.
3Piece Oil Ring (Vent) 3Piece Oil Ring (Vent) The main function is to adjust the oil. It is mainly applied to the gasoline engine. It is composed of the top/down side rail and the spacer.

Function of the piston ring

Classification Configuration Function Surface coating and materials
Top Ring - Maintaining airtightness of the compression and combustion gases
- Function to make a final adjustment on the oil, thus suppressing the amount of oil consumption.		 • Gas Nitriding
• CrN PVD
• Nano-Alpha		 Steel
2nd Ring - Suppression of the gas that passed through the top ring
- Role to scoop down the rising oil that passed through the oil ring		 • Phosphate
• Cr Plating		 Cast Iron
Steel
Oil Ring 2PCS
(DVM)		 - Main function : oil adjustment Used for the gasoline and diesel engine • Gas Nitriding
• Cr Plating
• CrN PVD
• Nano-Alpha		 Steel
3PCS
(VENT)		 Used for the gasoline engine