Lightweight piston

Details Lightweight piston Lightweight piston

1985-05-02

1987-08-04

Look, Edward K.

Expansible chamber devices

Piston

Open-ended hollow skirt type

291565R, F16J 104

Patent

active

046838090

ABSTRACT:
A lightweight piston 12 composed of carbon-carbon is disclosed. The use of carbon-carbon over conventional materials, such as aluminum, reduces piston weight and improves thermal efficiency of the internal combustion reciprocating engine. Due to the negligible coefficient of thermal expansion and unique strength at elevated temperatures of carbon-carbon, the piston-to-cylinder wall 10 clearance is so small as to eliminate the necessity of piston rings. Use of the carbon-carbon piston has the effect of reducing the weight of other reciprocating engine components allowing the piston to run at higher speeds and improving specific engine performance.

REFERENCES:
patent: 4242948 (1981-01-01), Stang et al.
patent: 4245611 (1981-01-01), Mitchell et al.
patent: 4274372 (1981-06-01), Kelm et al.
patent: 4341826 (1982-07-01), Prewo et al.
patent: 4354804 (1982-10-01), Cruzen
patent: 4363602 (1982-12-01), Martin
patent: 4404935 (1983-09-01), Kraft
patent: 4465434 (1984-08-01), Rourk
patent: 4466399 (1984-08-01), Hinz et al.

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