Piston Ring

Also found in: Dictionary, Thesaurus, Wikipedia.

piston ring

[′pis·tən ‚riŋ]
(design engineering)
A sealing ring fitted around a piston and extending to the cylinder wall to prevent leakage. Also known as packing ring.

Piston Ring


a split, springy metal ring installed in the groove of a piston. The piston ring presses against the cylinder wall of a reciprocating engine as a result of its own tension or under pressure from a flat, steel spring. Piston rings may be of the compression type or oil-scraper type. Compression rings seal the gap between the piston and the cylinder and conduct heat from the piston; oil-scraper rings remove excess oil from the working surface. Piston rings are usually made of high-quality gray iron. Bronze piston rings are sometimes used in pumps.

References in periodicals archive ?
The current article discusses the techniques and methodology used to assess the engine wear for liner and piston ring surfaces in a gasoline engine and provides preliminary wear results.
Although the 2nd order of distortion is larger than the distortion caused by the pretightening force, it is difficult for piston ring to conform to the clover distorted liner shape (4th order of distortion).
Prediction of oil film thickness in piston ring - cylinder assembly in an i c engine, Proceedings of the World Congress on Engineering 2009 Vol II, London, U.
M2 EQUITYBITES-February 28, 2013-Federal-Mogul to set up bore piston rings JV in China(C)2013 M2 COMMUNICATIONS http://www.
This enables the piston ring to scrape oil better from the cylinder wall, thereby lowering the overall oil consumption of the engine and some of the emission characteristics with it also.
industry comprises establishments primarily engaged in manufacturing and/or rebuilding carburetors, pistons, piston rings, and engine intake and exhaust valves.
The coating is applicable to all "known piston ring materials made of cast iron or steel.
As a matter of fact, top piston ring of the engines is very often covered with a hard chromium coating to ensure its longevity; this coating is obtained via an electrolytic process which requires the use of hexavalent chromium ions.
Federal-Mogul said the acquisition (the terms of which were not disclosed) would enhance its offerings by adding two-stroke and four-stroke piston ring products to its portfolio.
com/research/5f2525/carburetor_piston) has announced the addition of Supplier Relations US, LLC's new report "Carburetor, Piston, Piston Ring, and Valve Manufacturing Industry in the U.
The submitted machined portions of the piston ring were 0.