F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/59
F02M 3/02 (2006.01) F02M 3/08 (2006.01)
Patent
CA 1040030
INTEGRATED IDLE AND BY-PASS SYSTEM ABSTRACT A carburetor is disclosed which includes a supplementary fuel/air supply circuit for bypassing a throttle valve to provide a fixed fuel/air idle mixture. The supplementary fuel/air supply circuit includes separate fuel and air passage- ways which join at a mixing intersection. The mixing inter- section communicates with a main bore of the carburetor at a point below a throttle valve thereof. The supplementary fuel/ air supply circuit also includes a piston valve, which is responsive to manifold vacuum, to control flow of air through the air passageway so that the air passageway is open during periods of high manifold vacuum but closed during periods of low manifold vacuum. An idle-mixture adjusting screw is provided for adjusting air flow through the air passageway; a piston-stop adjusting screw is provided for tuning the position of the piston valve at its "closed" position; and, in one embodiment, a special plug is provided for holding the piston valve in a piston chamber.
244823
Kalert Ralph E.
Smith Robert J.
LandOfFree
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