Variable venturi carburetor

Details Variable venturi carburetor Variable venturi carburetor

1982-03-11

1984-04-24

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

261DIG55, F02M 906

Patent

active

044446950

ABSTRACT:
A variable venturi carburetor according to this invention is so arranged that during low load operation with a small degree of opening of the throttle valve, the suction piston is moved forward corresponding to a reduced amount of suctioned air to make a width of the venturi portion narrow and maintain negative pressure in the venturi portion at a constant level, fuel suctioned from the float chamber is gauged in an amount thereof under the cooperation of the metering needle with the metering jet and then ejected from the main nozzle, the ejected fuel strikes upon the head of the suction piston due to inertia thereof and then flows down along the surface of the head, the fuel collecting at the lower surface is received in the fuel receiver and flows down through the path formed in the wall of the barrel into the intake manifold in an atomized state, bypassing the throttle valve.

REFERENCES:
patent: 1371562 (1921-03-01), Kent
patent: 1442257 (1923-01-01), Dorris
patent: 3753555 (1973-08-01), Lawrence
patent: 3806101 (1974-04-01), Dyson
patent: 4063540 (1977-12-01), Pace
patent: 4259266 (1981-03-01), Nakamura
patent: 4302405 (1981-11-01), Inoue et al.

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