Variable compression piston

Details Variable compression piston Variable compression piston

1993-01-07

1993-11-02

Kamen, Noah P.

Internal-combustion engines

Four-cycle

Variable clearance

F02B 7504

Patent

active

052576000

ABSTRACT:
An apparatus for maintaining a consistently high compression ratio in an internal combustion engine utilizing a variable compression piston assembly. The piston having an outer piston mounted on an inner piston with an upper oil chamber therebetween. The piston assembly further having a lower oil chamber below the inner piston and a hydraulic system of valves for feeding oil into and maintaining oil within the oil chambers in response to the pressure within the cylinder.

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SAE Technical Paper Series, No. 901539, Variable Compression Pistons, by Cedric Ashley, 1990.

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