Carburetor

Details Carburetor Carburetor

1987-12-15

1989-04-18

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Valved

1235591, 137312, 261DIG51, F02M 1900

Patent

active

048225320

ABSTRACT:
A carburetor having a suction passage including therein a large venturi section and a throttle valve and connected at the upstream end thereof to the discharge port of a supercharger and at the downstream end thereof to the intake manifold of an internal combustion engine. A recess is formed either in the outer circumference of the shaft of the throttle valve or in the inside wall of a through hole formed in the body of a carburetor for pivotally supporting the shaft of the throttle valve, whereby a pressure chamber is formed between the shaft of the throttle valve and the through hole. The pressure chamber communicates with part of the suction passage upstream of the venturi tubes by a first air passage, and a second air passage opening into the through hole at a position between the suction passage and the pressure chamber communicates with the suction passage at a position downstream of the throttle valve. Pressure chambers which surround the throttle shaft are located to receive an air-fuel mixture when the pressure downstream of the venturi becomes greater than that upstream of the venturi and to feed the retained mixture into the carburetor when the pressure downstream of the venturi is lower than that upstream of the venturi.

REFERENCES:
patent: 2139841 (1938-12-01), Mennesson
patent: 2159173 (1939-05-01), Mennesson
patent: 2766768 (1956-10-01), Brown et al.
patent: 3411526 (1968-11-01), Schaefer
patent: 3707984 (1973-01-01), Bantz
patent: 3973583 (1976-08-01), Sorenson
patent: 4334011 (1980-11-01), Bake et al.

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