Variable venturi carburetor

Details Variable venturi carburetor Variable venturi carburetor

1983-12-28

1985-02-26

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Valved

261DIG56, F02M 914

Patent

active

045017093

ABSTRACT:
A variable venturi carburetor comprises an auxiliary intake air passage, an auxiliary variable venturi and a non-adjustable nozzle portion, in addition to a main intake air passage, a main variable venturi and an adjustable nozzle portion. If the amount of intake air is small as when the engine is being idled, intake air is passed mainly through the auxiliary variable venturi to generate vacuum sufficiently high to jet fuel into the auxiliary intake passage through the non-adjustable nozzle portion. If the amount of intake air is great as when the engine is running under a heavy load, intake air is passed mainly through the main variable venturi. Since two venturis are formed, it is possible to smoothly increase the amount of fuel to be jetted into the intake passage over a wide engine operating condition.

REFERENCES:
patent: 1124949 (1915-01-01), Raymond
patent: 1394536 (1921-10-01), Chase
patent: 1983255 (1934-12-01), Wahlmark
patent: 2646264 (1953-07-01), Morris
patent: 3592449 (1971-07-01), Elgohary
patent: 4154781 (1979-05-01), Mineck
patent: 4387685 (1983-06-01), Abbey

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