What is the Function of the Oil Ring?
2 Answers
About the specific introduction of the oil ring function is as follows: 1. The specific function of the oil ring. The main function of the oil ring is to scrape off the excess oil splashed onto the cylinder wall during the downward stroke, preventing the excess oil from entering the combustion chamber and participating in combustion; during the upward stroke, it applies a uniform oil film on the cylinder wall to reduce the wear of the piston, piston rings, and cylinder. 2. Classification of oil rings. The oil ring is a type of piston ring, divided into ordinary oil rings and composite oil rings. The structure of an ordinary oil ring is made of alloy cast iron, with a groove cut in the middle of the outer circular surface, and many small through oil drainage holes or slits processed at the bottom of the groove; while the composite ring consists of upper and lower scrapers and a spacer spring that generates radial and axial elastic forces. The oil ring scraper is very thin, with a high specific pressure on the cylinder wall and strong oil scraping ability.
The primary function of the oil control ring is to regulate oil flow within the engine, preventing excessive oil from entering the combustion chamber which could cause oil burning issues, thereby reducing blue smoke emissions and pollution. As part of the piston ring assembly, the oil ring maintains proper lubrication by scraping excess oil film from the cylinder walls, protecting them from wear. I've observed that many engine failures stem from oil accumulation due to worn oil rings, leading to increased carbon deposits that affect power output and fuel consumption. It's crucial to inspect piston ring conditions during every maintenance service. Regular oil changes and air filter cleaning are recommended to extend oil ring lifespan, especially after long-distance driving when engine abnormal noises or instability symptoms should be closely monitored to prevent unexpected failures.
