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piston ring
- Definição1
- Metal rings, usually made of cast iron, that fit into grooves around the outside of a reciprocating-engine piston. Piston rings form a seal between the piston and the cylinder wall to prevent the high-pressure air in the cylinder from leaking out.
- Fonte1
- CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
- Definição2
- Precision-ground abrasion-resistant ring fitted in groove around piston to make spring-tight fit against cylinder (see gas ring, junk ring, obturator ring, oil-scraper ring).
- Fonte2
- GUNSTON, Bill. The Cambridge aerospace dictionary. Cambridge: Cambridge University, 2004. vii, 740 p. (Cambridge aerospace series.)
- Subárea
- Engine
- Français
- segment de piston
- Imagem
Horizontal steam engine. The piston is shown at D. The three piston rings prevent steam from escaping between chambers A and B.
Fonte: http://en.wikipedia.org/wiki/File:Horizontal_steam_engine.png
