Internal combustion engine with variable compression ratio

Details Internal combustion engine with variable compression ratio Internal combustion engine with variable compression ratio

1992-03-23

1992-11-24

Okonsky, David A.

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

123 78F, F02B 7502

Patent

active

051653680

ABSTRACT:
A combination hydraulic and mechanical mechanism for varying the stoke/clearance volume of an engine in response to the alternating torsional impulses of the engine that are applied through the piston and connecting rod mechanism. An eccentric on which the connecting rod is journaled is rotated relative to the crankshaft to vary the crank radius, which will vary the compression ratio and make other changes in the thermodynamic cycle. A fluid pressure control system includes a pressure movable shaft controlling the flow of fluid past one-way check valves to oil filled hydraulic cylinders that contain pistons/plungers operably connected to the eccentric and crankshaft, to control the movement of the eccentric in response to the torsional impulses.

REFERENCES:
patent: 1476309 (1923-12-01), Toth
patent: 1987661 (1935-01-01), Blauvelt et al.
patent: 2060221 (1936-11-01), King
patent: 3180178 (1965-04-01), Brown et al.
patent: 4301695 (1981-11-01), Reiher
patent: 4406257 (1983-09-01), Akkerman
patent: 5002023 (1991-03-01), Butterfield et al.

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