Carburetor

Details Carburetor Carburetor

1978-06-12

1979-10-02

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

F02M 110

Patent

active

041698720

ABSTRACT:
A carburetor for an internal combustion engine. A carburetor body has an induction passage for air to be drawn into the engine. A throttle valve is positioned in the induction passage and is movable between an open and a closed position to control the quantity of air drawn into the engine. A staging valve is positioned in the induction passage and is movable between an open and a closed position. The staging valve is closed during engine cranking and is moved to a first open position when the engine starts and toward its fully open position as the engine warms up. The opening movement of the staging valve is limited to a second open position which is less than its fully open position. The limiting of staging valve movement to this second and less than fully open position limits the usable air capacity of the carburetor to less than its maximum capacity. Staging of the carburetor occurs in response to movement of the throttle valve past a predetermined open position and the staging valve is allowed to move freely between its second open position and its fully open position solely in response to the demand for air by the engine. The free movement of the staging valve to its fully open position increases the usable air capacity of the carburetor to its maximum capacity.

REFERENCES:
patent: 2198676 (1940-04-01), Mallory
patent: 2943848 (1960-07-01), Gordon et al.
patent: 3043572 (1962-07-01), Ott et al.
patent: 3248095 (1966-04-01), Ball
patent: 3272487 (1966-09-01), Cook et al.
patent: 3309069 (1967-03-01), Braun et al.
patent: 3322408 (1967-05-01), Stoltman

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