Gas and liquid contact apparatus – Fluid distribution – Valved
Patent
1978-06-12
1979-12-04
Miles, Tim R.
Gas and liquid contact apparatus
Fluid distribution
Valved
261 51, F02M 722
Patent
active
041772253
ABSTRACT:
A carburetor comprises a carburetor body having an induction passage, a throttle valve positioned in the passage, a fuel circuit through which fuel is drawn from a fuel bowl for mixing with air to form an air-fuel mixture, a fuel metering rod responsive to movement of the throttle valve for varying the quantity of fuel flowing through the fuel circuit, and a staging valve positioned in the induction passage and movable between an open and a closed position, the staging valve functioning as a choke valve during engine cranking and warm-up and as an air valve during other engine operating conditions. The fuel metering rod is positioned relative to an inlet to the fuel circuit in response to opening and closing movements of the staging valve, when it functions as an air valve, to control the quantity of fuel flowing through the fuel circuit as demand for air by the engine increases or decreases. This control of the fuel metering rod is independent of the control thereof by the throttle valve.
REFERENCES:
patent: 1838421 (1931-12-01), Linkert
patent: 2098202 (1937-11-01), Weber
patent: 2457570 (1948-12-01), Leibing
patent: 3278171 (1966-10-01), Carlson
patent: 3278173 (1966-10-01), Cook et al.
patent: 3284062 (1966-11-01), Obermeyer, Jr.
patent: 3307837 (1967-03-01), Winkler
patent: 3309069 (1967-03-01), Braun et al.
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