Abstract

A fuel vaporizer for an internal combustion engine having a closed pressure chamber defining a volume, to be heated, and a liquid fuel supply system disposed to emit a liquid fuel spray. The closed pressure chamber may be constructed and arranged relative to the heat-transfer surface to establish between the at least one outlet and the heat-transfer surface a mixing domain in which the fuel spray, as it progresses through the volume from the outlet, is substantially heated and vaporized by mixing with re-circulated, heated fuel vapor that previously has moved over and received heat from the heat transfer surface. The fuel vaporizer may be associated with a vapor outflow passage through which pressurized vapor exits the closed pressure chamber for supply to said at least one combustion region. The heat-transfer surface may be arranged to be heated by engine coolant circulating around the exterior of the closed pressure chamber.

IPC Classes  ?

• F02M 15/02 - Carburettors with heating, cooling or thermal insulating means for combustion-air, fuel or fuel-air mixture with heating means, e.g. to combat ice-formation
• F02M 31/18 - Other apparatus for heating fuel to vaporise fuel
• F02M 15/00 - Carburettors with heating, cooling or thermal insulating means for combustion-air, fuel or fuel-air mixture
• F02M 37/00 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatusArrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines