Carburetor fuel flow control device

Details Carburetor fuel flow control device Carburetor fuel flow control device

F - Mech Eng,Light,Heat,Weapons

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F02M 17/08 (2006.01) F02M 3/02 (2006.01) F02M 3/05 (2006.01)

Patent

CA 1046364

ABSTRACT OF THE DISCLOSURE A fuel flow control device is adapted to be used in the place of the conventional pilot jet of the carburetor of an internal combustion engine. This device comprises a chamber defining first and second valve seats, as well as a double-acting movable valve member cooperating alternatively with said valve seats. The chamber is connected by the first valve seat to a fuel inlet, and by the second valve seat to an air inlet, and its wall has openings by means of which said chamber may be interposed in a low-pressure conduit connected to the carburetor. Means are provided for maintaining the valve head in an intermediate position, i.e. out of engagement with said first and second valve seats, when the engine runs at idling speed, and for moving the valve head into engagement with the first valve seat when the engine runs at an increased speed, while moving the valve head into engagement with the second valve seat when the engine runs at a very low speed, whereby the fuel flow controlled by the device is interrupted each time the engine runs at a speed different from the idling speed.

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