Pressure assist piston for internal combustion engine

Details Pressure assist piston for internal combustion engine Pressure assist piston for internal combustion engine

1986-04-18

1988-11-29

Myhre, Charles J.

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

123 78D, F02B 7504

Patent

active

047873418

ABSTRACT:
A controlled pressure combustion chamber for a reciprocating engine. The engine includes a main cylinder and a main reciprocating piston. In the cyliner head is a second cylinder which opens to the first cylinder. A free piston in the second cylinder in shiftable in the second cylinder to absorb energy upon displacement of the main piston in the main cylinder due to compression and combustion. A pneumatic cushion is defined behind the free piston in its second cylinder and pressure in the pneumatic cushion adjusts displacement of the free piston. The free piston includes a projection which abuts an abutment in the second cylinder and motion of the free piston is damped. Valves in the second cylinder maintain the desired pressure in the pneumatic cushion.

REFERENCES:
patent: 922613 (1909-05-01), McClintock
patent: 2215986 (1940-09-01), Stevens
patent: 2414217 (1947-01-01), Weiss et al.
patent: 2419450 (1947-04-01), Howard
patent: 2914047 (1959-11-01), Colton

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