Means for supplying a fuel/air mixture to an internal combustion engine

Means for supplying a fuel/air mixture to an internal combustion engine having an intake manifold and means for cooling the engine with a coolant, in the absence of a venturi, comprising a housing, means for injecting fuel into the housing, means for transferring sufficient heat from at least one of the exhaust gases of the engine and the coolant to the housing so that essentially all of the fuel is vaporized when it leaves the housing, conduit means for admitting air into the housing simultaneously with the injection of the fuel to form a mixture with the vaporized fuel, outlet conduit means communicating only with the housing and the intake manifold for conducting the entire mixture out of the housing directly to the intake manifold for combustion in the engine, rotor means positioned in said outlet means upstream of the valve means therein for rotation by the gases passing through the outlet conduit means, said rotor means being remote from the fuel injecting means, said heat transfer means including surfaces in the housing interposed between the fuel injecting means and said rotor means whereby the injected fuel is prevented from impinging directly on said rotor means and the injected fuel impinges upon said surfaces and vaporization thereof is essentially completed before the injected fuel reaches said rotor means, and respective valve means in the air admitting conduit means and in the outlet conduit means for controlling the flow of air through the air admitting conduit means and the flow of fuel/air mixture through the outlet conduit means, respectively.