oil control ring


oil control ring
A piston ring designed to scrape oil from the cylinder wall, the ring is of such a design as to allow the oil to pass through the ring and then through holes or slots in the groove. In this way the oil lubricates the cylinder walls and is returned to the pan rather than getting into the combustion chamber where it might foul the spark plugs and create carbon on the head of the cylinder. There are many shapes and special designs used on oil control rings. Often it is the third or fourth ring from the top. Also called oil scraper ring

Dictionary of automotive terms. 2015.

Look at other dictionaries:

  • oil-control ring — noun (motoring) Same as ↑scraper ring (see under ↑scrape) • • • Main Entry: ↑oil …   Useful english dictionary

  • control ring — See oil control ring …   Dictionary of automotive terms

  • oil control — See piston ring, oil control …   Dictionary of automotive terms

  • piston ring, oil control — See oil control ring …   Dictionary of automotive terms

  • ring — A circular piece or band of metal. See balk ring blocking ring chainring chrome ring compression ring control ring D ring D ring dykes ring fire ring …   Dictionary of automotive terms

  • control — [1] A device or mechanism for adjusting a component. See cruise control. [2] The ability of the driver to make a vehicle perform as required. [3] To regulate. [4] Automatic or manual device used to stop, start, and/or regulate flow of gas, liquid …   Dictionary of automotive terms

  • oil — A substance that lubricates and cools the moving parts of the engine and reduces the formation of rust and corrosion. It contains additives which fights the corrosion of bearings, keeps small particles in suspension, reduces engine wear, and… …   Dictionary of automotive terms

  • Oil pump (internal combustion engine) — This article is about a part in an internal combustion engine. For other uses, see Oil pump. Oil circulation system …   Wikipedia

  • Piston ring — A piston ring is an open ended ring that fits into a groove on the outer diameter of a piston in a reciprocating engine such as an internal combustion engine or steam engine. The three main functions of piston rings in reciprocating engines are:# …   Wikipedia

  • scraper ring — noun : a piston ring designed to scrape excess oil from the cylinder wall to prevent its entrance into the combustion chamber * * * scraper ring noun (motoring) A ring fitted on the skirt of a petrol or oil engine piston to prevent excessive oil… …   Useful english dictionary


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