Four cycle, dual piston internal combustion engine and pump

Details Four cycle, dual piston internal combustion engine and pump Four cycle, dual piston internal combustion engine and pump

1988-03-14

1989-06-13

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

Cylinders in-line

123 73FA, 123317, 417380, F02B 7540

Patent

active

048382167

ABSTRACT:
An internal combustion engine having a bi-diameter or stepped piston configuration. The piston having a smaller upper piston portion and a larger lowre piston portion. A pumping chamber is formed in part by the larger lower piston portion separate from each of the crankcase and combustion chamber. Fluid reaches the pumping chamber from outside the pump/engine and is pumped-out beyond the pump/engine. The pumped fluid never communicates with either of the sealed crankcase or combustion chamber.

REFERENCES:
patent: 1836081 (1931-12-01), McFarland et al.
patent: 3981280 (1976-09-01), Franke
patent: 4169434 (1979-10-01), Guenther

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