Pressure relief system for a check valve

Details Pressure relief system for a check valve Pressure relief system for a check valve

1990-06-08

1991-05-28

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

F02M 3510

Patent

active

050184865

ABSTRACT:
A pressure relief system is for an engine having an intake passage leading to a cylinder, a check valve in the intake passage to allow fluid flow toward the cylinder and obstruct fluid back-flow in the reverse direction, and a bypass port located on the intake passage so that the bypass port communicates with a downstream portion defined by the portion of the intake passage between the cylinder and check valve. The pressure relief system comprises a pressure relief passage connected between the bypass port and a reservoir enabling communication between the reservoir and downstream portion. A pressure-sensitive valve is connected to the pressure relief passage. The pressure-sensitive valve allows the communication if the pressure in the downstream portion exceeds a reference pressure by a predetermined amount, and obstructs the communication if the pressure in the downstream portion does not exceed the reference pressure by the predetermined amount.

REFERENCES:
patent: 3810454 (1974-05-01), Hunt
patent: 3935842 (1976-02-01), Ishizawa et al.
patent: 4232641 (1980-11-01), Curtil
patent: 4445336 (1984-05-01), Inoue
patent: 4773358 (1988-09-01), Heath
patent: 4796584 (1989-01-01), Goto et al.
patent: 4890582 (1990-01-01), Schatz et al.

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