Variable venturi-type carburetor

Details Variable venturi-type carburetor Variable venturi-type carburetor

1983-02-10

1985-04-23

Lall, Parshotam S.

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

123440, 261 44C, 261121B, 261DIG56, F02M 718

Patent

active

045123128

ABSTRACT:
A variable venturi-type carburetor comprising a metering jet and at least one air-bleed bore formed on the cylindrical inner wall of the metering jet. The amount of air fed into the fuel passage of the carburetor from the air-bleed bore is controlled by an output signal from the oxygen concentration detector arranged in the exhaust manifold so that the air-fuel ratio of the mixture fed into the cylinder of the engine becomes equal to the stoichiometric air-fuel ratio. The metering needle is arranged so that it contacts the cylindrical inner wall of the metering jet and partially covers the air-bleed bore.

REFERENCES:
patent: 3970060 (1976-07-01), Sasano
patent: 3981284 (1976-09-01), Gospodar
patent: 4060064 (1977-11-01), Minami et al.
patent: 4083338 (1978-04-01), Bertling et al.
patent: 4097562 (1978-06-01), Blakeway
patent: 4136139 (1979-01-01), Nakamura et al.
patent: 4144855 (1979-03-01), Masui et al.
patent: 4208358 (1980-06-01), Atkins et al.
patent: 4290399 (1981-09-01), Takada et al.
patent: 4314535 (1982-02-01), Takeuchi et al.
patent: 4369749 (1983-01-01), Sugi
patent: 4371478 (1983-02-01), Wada
patent: 4393012 (1983-07-01), Kato et al.

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