Определение piston ring в Английский Язык Английский Язык словарь
a ring or seal that fits around a piston, sealing between the piston and the bore in which it slides
An adjustable split metal ring that fits around a piston and seals the gap between the piston and the cylinder wall. a circular metal spring used to stop gas or liquid escaping from between a piston and the tube that it moves in
(Otomotiv) Metal rings located in grooves on the outside of the piston that keep the fuel/air mixture from leaking past the piston into the crankcase during compression and that keep oil from going up into the combustion chamber. Faulty rings can cause poor compression, severe blow-by, and excessive smoking from the tailpipe