Piston engine powertrain

Details Piston engine powertrain Piston engine powertrain

1999-08-20

2000-10-03

Kamen, Noah P.

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

123 78E, 1231974, F02B 7504

Patent

active

061258024

ABSTRACT:
An engine body supports a cylinder having a piston reciprocally mounted therein. A connecting rod is pivotally connected between the piston and a lever which is pivotally supported by the engine body. The lever rotatably supports a drive roller which is disposed in contact with a cam surface on a member drivingly connected to an output shaft. The connecting rod may be connected to the lever by a connecting pin which is mounted for movement within slots formed in the lever. A crank is pivotally connected to the connecting pin to adjust the position of the connecting pin within the slots to control reciprocal movement of the piston. In a modification, the levers connected to adjacent pistons are connected to one another for movement together and are pivoted about a common pivot axis. In another embodiment, a novel cam profile provides unequal piston strokes to operate the engine in an overexpanded operating cycle.

REFERENCES:
patent: 1309257 (1919-07-01), Martens
patent: 1777179 (1930-09-01), Perlman
patent: 2120657 (1938-06-01), Tucker
patent: 4538557 (1985-09-01), Kleiner et al.
patent: 5335632 (1994-08-01), Hefley

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