Fuel induction system for internal combustion engine

Claim 1

A fuel induction system for an internal combustion engine, including an intake manifold, a carburetor attached to said manifold, and a fuel-vaporizing device interposed between said carburetor and said manifold, said device comprising: a housing forming an enclosed chamber that is connected at the top to said carburetor to receive the fuel-air mixture therefrom; a diffuser mounted within said chamber and cooperating with the latter to define a passageway between the diffuser and said housing, said diffuser including an inverted horn that is open at the bottom; means for imparting a high-velocity spin to said fuel-air mixture as the latter moves downwardly through said passageway; a heat-exchange bowl mounted within said housing, surrounding the lower portion of said diffuser and extendiNg under said horn at a distance therefrom, said heat-exchange bowl having a rounded bottom that directs the spinning fuel-air mixture in toward the center and up into the bottom end of said inverted horn; means for heating said heat-exchange bowl to a temperature well above the vaporization point of the fuel; the minute droplets of liquid fuel suspended in the fuel-air mixture received from said carburetor being thrown outwardly by centrifugal force against the inner surface of said heatexchange bowl due to the high velocity spin of the mixture, and said liquid droplets being vaporized by contact with the hot wall of the heat-exchange bowl, the vaporized fuel and air being intimately mixed by the turbulent swirling motion of the mixture as it reaches the bottom of the bowl and is turned inwardly and up into the open end of said horn; and means for distributing the dry, gaseous fuel vapor and air mixture from said diffuser to said intake manifold.