Fuel control arrangement for an internal combustion engine

Claim 1

An arrangement for controlling the fuel supply to an internal combustion engine which includes an intake manifold, comprising a pressure-responsive actuating means, a passage inter connecting said manifold and said actuating means, a first valve in said passage between said manifold and said actuating means, said first valve including a casing having an inlet and an outlet, a member rotatable within the casing and sealingly engaged therewith between the inlet and the outlet, a passage in said member to permit communication between the inlet and the outlet, a closure means for the passage pivotally mounted on said member, biasing means engaging the closure means in a direction to shut the valve, the closure means being responsive to centrifugal force to open the valve, and means for rotating said member at a speed dependent on the speed of the engine, and a second valve operable by the actuating means, the arrangement being such that at a predetermined pressure in the inlet manifold and a predetermined speed of the member in the first valve the second valve is operated by said actuating means to vary the amount of fuel supplied to the engine.