Patent ID: 6729609
Filing Date: 2004-05-04
Classification: F02B,F02M,Y02T,Y10S

Abstract:
A carburetor arrangement for admitting vaporized fuel and stoichiometric amounts of air to an engine, the engine having an engine intake, the arrangement comprising:a main air gallery connected to the engine intake for admitting a majority of air therethrough for operation of the engine; a fuel chamber in heat communication with an exhaust chamber through which hot exhaust gas passes for forming a heat exchanger; a vapor exit formed between an exit from the fuel chamber and a low pressure zone in the main air gallery; a fuel/air regulator for metering fuel and carrier air as a rich fuel mixture into an inlet to the fuel chamber, the rich fuel mixture being heated through the fuel chamber for producing a hot vaporized fuel mixture at the vapor exit wherein, when the hot vaporized fuel mixture is combined with the majority of air through the main air gallery, a substantially stoichiometric amount of air is admitted to the engine; and a sleeve extending into the main air gallery and forming an annulus which forms the exit of the fuel chamber so that a flow of air through the sleeve forms a low pressure zone so that hot vaporized fuel mixture is drawn into the main air gallery.