Carburetor vacuum shutoff control valve

Details Carburetor vacuum shutoff control valve Carburetor vacuum shutoff control valve

1975-06-06

1976-08-31

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

137480, 123124R, F02D 1108

Patent

active

039773728

ABSTRACT:
A carburetor vacuum shutoff control valve for motor vehicles includes a snap-action spring which senses the the sudden vacuum increase in the carburetor each time the vehicle decelerates. The spring opens the valve during deceleration to allow air to pass through the valve from the atmosphere and immediately prevent the normal fuel mixture from being pulled in through either the idle or high-speed carburetor jets. Thus, during deceleration no gasoline is used, resulting in better fuel economy and no exhaust gas or crankcase emissions.

REFERENCES:
patent: 1887515 (1932-11-01), Pulkinghorn
patent: 2207152 (1940-07-01), Huber
patent: 2284287 (1942-04-01), Hearn et al.
patent: 3287899 (1966-11-01), Bintz
patent: 3357414 (1967-12-01), Meserve

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