Continuous piston rings for an internal combustion engine

Details Continuous piston rings for an internal combustion engine Continuous piston rings for an internal combustion engine

1997-12-23

2000-05-23

McMahon, Marguerite

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

277438, F16J 920

Patent

active

060654384

ABSTRACT:
A continuous compression ring and a continuous oil control ring for a piston reciprocally operable in a combustion cylinder of an IC engine, the continuous compression ring being cooperatively receivable in a groove extending around the piston and having a generally G-shaped cross-sectional shape including a circumferentially extending lip positioned to be located radially outwardly of a cylindrical outer surface extending around the piston, the lip adapted for forming a substantially sealed condition around the piston in cooperation with an oil film on the combustion cylinder wall, the continuous oil control ring being cooperatively receivable in another groove extending around the piston and having a generally n-shaped cross-sectional shape including a circumferentially extending leg portion adapted to be positioned radially outwardly of the outer surface of the piston around the piston for scraping the oil film on the combustion cylinder wall during the reciprocal operation of the piston in the combustion cylinder, and a piston construction adapted to facilitate installation of the continuous compression ring and continuous oil control ring around the piston.

REFERENCES:
patent: 2107241 (1938-02-01), Freer
patent: 2867482 (1959-01-01), Schmidt
patent: 3563558 (1971-02-01), Doutt
patent: 4794848 (1989-01-01), Melchior
patent: 5253877 (1993-10-01), Debiasse et al.
patent: 5398945 (1995-03-01), Hinshaw et al.

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