Patent ID: 7886725

Claim:
A fuel vaporizer system for an internal combustion engine, comprising: a first closed chamber defining a first volume, said closed chamber having a heat transfer surface, wherein said first closed chamber is a pressure chamber having a cylindrical center, an upper spherical end and a lower spherical end; a second closed chamber at least partially surrounding the first closed chamber defining a second volume; a liquid fuel supply system comprising a liquid fuel supply line to emit into the first volume an expanding pattern of liquid fuel spray from at least one orifice proximate said upper spherical end spaced from the heat-transfer surface; a thermal fluid system from said engine configured to circulate heated fluid through the second volume and transfer heat from the heated fluid through the first closed chamber and vaporize said liquid fuel; a vaporized fuel outlet configured to direct vaporized fuel from the first closed chamber to supply fuel to at least one combustion region of the internal combustion engine via a combustion fuel supply line; and a pressure relief valve configured to open when pressure inside the first closed chamber exceeds a predetermined threshold and to direct vaporized fuel to the liquid fuel supply system.