piston ring

Also found in: Thesaurus, Encyclopedia, Wikipedia.

piston ring

An adjustable split metal ring that fits around a piston and seals the gap between the piston and the cylinder wall.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

piston ring

(Automotive Engineering) a split ring, usually made of cast iron, that fits into a groove on the rim of a piston to provide a spring-loaded seal against the cylinder wall

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pis′ton ring`

a metal ring, split so it can expand, placed around a piston to ensure a tight fit in the cylinder of an engine.

[1865–70]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Switch to new thesaurus

Noun

piston ring - seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall

piston, plunger - mechanical device that has a plunging or thrusting motion

seal - fastener that provides a tight and perfect closure

Translations

piston ring

n (Aut) → fascia elastica

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

Mentioned in ?

References in periodicals archive ?

Table 1 gives the list of five coatings of the top piston ring to be tested the configuration of which is typical of a European 2.0 liters turbocharged diesel engine PSA DW10.

Characterization of various coatings in terms of friction and wear for internal combustion engine piston rings/Ivairiomis dangomis padengtu vidaus degimo varikliu stumokliu ziedu trinties ir isdilimo tyrimas

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.

Federal-Mogul buys piston ring caster Daros

Also there will be USA saloons, custom and kit cars, bikes and military vehicles, while Nuneaton's Piston Ring Youth Motorcycle Display Team perform at 1pm and 3pm.

Classic cars He on display

As the diagram above demonstrates, those gases can also exert force on the piston ring and, because of the angle in its design, push the ring against the cylinder wall.

Engine break-in: how you fly the first few hours after installing new cylinders can mean the difference between a reliable engine and another top-end job

Wong and some colleagues are evaluating how minor changes to piston ring geometry, orientation, and materials can improve fuel use in large-bore reciprocating natural gas engines.

Stand-still efficiency

The switches are actuated by a magnetic piston ring as the cylinder's piston moves up and down, and a programmable logic controller reads the open or closed condition.

Pneumatic swing cylinder clamps. (Literature Marketplace)

A new piston ring coating has been developed by the Federal-Mogul Powertrain Segment (federalmogul.com) that is said to have a combination of durability and friction reduction that can result in improved fuel economy in both gasoline and diesel engines.

Piston ring coating with exceptional performance developed

The auto parts maker is considering a range of proposals including setting up a piston ring production line at its existing factory in Kumagaya, Saitama Prefecture, north of Tokyo, which also manufactures other devices, the sources said.

Riken eyes dispersing production of key auto parts

Kit cars, American cars, motor cycles and commercial vehicles will be there, as well as the young Piston Ring Motorcycle display team, trade stands, children's inflatables and quad bikes.

Classic cars on show

The submitted machined portions of the piston ring were 0.5-in.

Investigating Cast Iron Defects: Four Foundries' Experiences

It is particularly suitable as a low-cost, mass-production approach for producing aluminum composite liners in aluminum engine blocks, piston ring groove reinforcement and dual-alloy aluminum castings.