Dual-expansion internal combustion cycle and engine

Details Dual-expansion internal combustion cycle and engine Dual-expansion internal combustion cycle and engine

1980-08-21

1982-04-20

Feinberg, Craig R.

Internal-combustion engines

Oscillating cylinder

123 45R, 123 47R, 123 50R, 123 53R, 123 61R, F02B 5900

Patent

active

043253318

ABSTRACT:
A novel internal combustion cycle and internal combustion engine operating thereon. Expansion of the hot combustion gases is controllably achieved in a primary combustion/expansion chamber and a secondary expansion chamber in a manner to reduce engine exhaust pressures to essentially atmospheric or below. The chambers are defined by two members movable with respect to each other within an engine block volume. Porting and fluid flow control is accomplished through the motion of the moving members. Embodiments include the use of a suction chamber which achieves subatmospheric exhaust pressures and which, in conjunction with a pressure-pumping chamber, achieves a "push-pull" effect on the fluid in the engine. Unique porting of the fuel/air mixture is provided and it includes, if desired, means to vary the fuel/air ratio during the cycle. The engine of this invention exhibits performance characteristics associated with the usual four-stroke cycle engines.

REFERENCES:
patent: 1219512 (1917-03-01), Weiss
patent: 2280487 (1942-04-01), Heylandt
patent: 3630178 (1971-12-01), Erickson
patent: 4157080 (1979-06-01), Hill

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