Split ceramic piston ring arrangement with nested biasing ring

Details Split ceramic piston ring arrangement with nested biasing ring Split ceramic piston ring arrangement with nested biasing ring

1989-03-28

1990-10-30

Look, Edward K.

Expansible chamber devices

Piston

With spring means for biasing side wall portion radially

92200, 92212, 123193P, 277150, 277198, 277217, 277222, 277DIG6, F16J 906, F16J 924, F16J 926

Patent

active

049660683

ABSTRACT:
A piston-ring arrangement for use in an internal combustion engine including a cylinder with a piston axially displaceable within the cylinder and at least one piston ring guided in the cylinder. The cylinder, piston and piston-ring are made of a ceramic material. The piston ring is formed of two circumferentially extending parts and is mounted in a groove in the circumferentially surface of the piston. The groove has a depth greater than the corresponding radial depth of the piston ring so that a spring element can be positioned between the base of the groove and the piston ring for biasing the piston ring radially outwardly. The spring element can be annular member with a corrugated shape or a multi-part ceramic member shaped to provide a biasing action.

REFERENCES:
patent: 639363 (1899-12-01), Dockum
patent: 1179333 (1916-04-01), Obertop
patent: 1698073 (1929-01-01), Solenberger
patent: 1703905 (1929-03-01), Solenberger
patent: 1753113 (1930-04-01), Floyd
patent: 1920114 (1933-07-01), Solenberger
patent: 2021830 (1935-11-01), Borgfeldt
patent: 2785027 (1957-03-01), Hamm
patent: 4404935 (1983-09-01), Kraft
patent: 4522415 (1985-06-01), Dworak et al.
Bussien, Handbook of Automobile Technology, vol. 1, 18th Edition, May 1965, p. 258.

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