Variable stroke/clearance volume engine

Details Variable stroke/clearance volume engine Variable stroke/clearance volume engine

1992-03-23

1992-11-17

Okonsky, David A.

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

123 78E, F02B 7504

Patent

active

051633868

ABSTRACT:
An automotive-type engine has each of the piston connecting rods connected to the engine crankshaft by means of a swing link that is pivoted at one end to the arm of a normally stationary crank; however, the crank can be rotated to change the clearance volume between the piston and the cylinder head or the stroke of the engine for best engine operation at each operating condition. A piston/plunger hydraulically interconnects the crank arm to a control means for permitting rotation of the crank arm by means of a number of cam-controlled pushrods operating on one-way check valves controlling flow of fluid from opposite ends of the chamber containing the piston/plunger.

REFERENCES:
patent: 1572918 (1926-02-01), Geddes
patent: 1786423 (1930-12-01), Cady
patent: 1901263 (1933-03-01), Ruud
patent: 2822791 (1958-02-01), Biermann
patent: 3633552 (1972-01-01), Huber
patent: 4131094 (1978-12-01), Crise
patent: 4437438 (1984-03-01), Mederer
patent: 4538557 (1985-09-01), Kleiner et al.
patent: 4917066 (1990-04-01), Freudenstein et al.
patent: 4957069 (1990-09-01), Mederer

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