Variable stage type carburetor

Details Variable stage type carburetor Variable stage type carburetor

1977-08-29

1978-08-08

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Pumping

261 44F, 261 52, 261DIG56, F02M 908

Patent

active

041057201

ABSTRACT:
A variable stage type carburetor having a throttle valve and a movable venturi vane cooperative with the throttle valve. This carburetor further includes a negative pressure responsive device for forcedly shifting the venturi vane in a direction to be closed, irrespective of an opening of the throttle valve, when the negative pressure in the venturi portion is lowered to less than a given value, and an accelerator pump for additionally supplying fuel to an intake passage commensurate to the opening action of the throttle valve. The accelerator pump is effectively operated when the opening of the throttle valve remains at an angle no more than a given degree, while the negative pressure responsive device is effectively operated, when the opening of the throttle valve is at an angle no less than a given degree.

REFERENCES:
patent: 3802671 (1974-04-01), Klutho
patent: 3937768 (1976-02-01), Bier et al.
patent: 3957929 (1976-05-01), Gural et al.
patent: 4005161 (1977-01-01), Shimo et al.

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