Variable venturi carburetor

Details Variable venturi carburetor Variable venturi carburetor

1980-12-23

1982-07-27

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

123DIG11, 261121B, 261DIG74, F02M 906

Patent

active

043417230

ABSTRACT:
Disclosed herein is an improvement in a variable venturi carburetor for an internal combustion engine which comprises a venturi portion, a float chamber, a main fuel passage communicating with the venturi portion and with the float chamber, a main jet provided in the main fuel passage and a movable metering needle of which free end is adapted to control the size of the main jet and the base portion thereof is mounted to a suction piston adapted to transversely move with respect to the venturi portion in response to the condition of load on the internal combustion engine. The improvement includes provision of a fuel bypass which detours the main jet for supplying part of fuel to the venturi portion. The fuel bypass communicates with the atmosphere through one or more throttles.

REFERENCES:
patent: 1444222 (1923-02-01), Trego
patent: 3455260 (1969-07-01), Mennesson
patent: 3618581 (1971-11-01), Simonet
patent: 3764120 (1973-10-01), Imai
patent: 3765658 (1973-10-01), Hartel et al.
patent: 3855974 (1974-12-01), Mayer
patent: 4050436 (1977-09-01), Crabtree
patent: 4084562 (1978-04-01), Eckert
patent: 4251472 (1981-02-01), Dammann
patent: 4276238 (1981-06-01), Yoshikawa et al.

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