Internal-combustion engines – Adjustable combustion chamber – Piston in head adjusted
Patent
1988-08-19
1989-10-31
Okonsky, David A.
Internal-combustion engines
Adjustable combustion chamber
Piston in head adjusted
123 52A, 123 78R, F02B 7504
Patent
active
048769924
ABSTRACT:
A variable compression ratio engine has a pair of crankshafts connected by a phase adjuster mechanism operative to change the phase angle between the crankshafts so as to vary the compression ratio of the engine. The phase adjuster mechanism includes two pairs of helical phasing gears. Each of those pairs consists of a gear fixedly mounted on a crankshaft and, operatively engaged therewith, a wider gear fixedly mounted on an axially movable adjuster member. The crankshafts can be arranged in-line or side-by-side in parallel. Each of the phasing gears which is fixedly connected to the axially movable adjuster member is bounded by a respective imaginary cylindrical surface whose axis coincides with and whose points are equidistant from the axis of rotation of the adjuster member, and whose diameter is equal to the outside diameter of that phasing gear, and which extends along the length of the engine block without intersecting the envelope swept by each crankshaft and connecting rod means associated with that crankshaft whereby the phasing gears of the phase adjuster mechanism are operable along the shole length of the engine block so as to minimize the length of each of the crankshafts and, ultimately, the external lengthwise dimensions of the engine.
REFERENCES:
patent: 1457322 (1923-06-01), Sproule
patent: 3742027 (1956-04-01), Mansfield
patent: 3961607 (1976-06-01), Brems
Archives of Thermodynamics; vol. 5, 1/1984; Sobotowski et al., pp. 135-147.
Evans John C.
Okonsky David A.
Standard Oil Company
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