Patent ID: 8763565
Filing Date: 2014-07-01
Classification: F01B,F02B,F02D,F02M,F17C,Y02T

Abstract:
1. A gaseous fuelled two-engine system comprising: (a) a storage tank that is thermally insulated for holding a gaseous fuel in liquefied form; (b) a first outlet associated with a lower portion of said storage tank for delivering said gaseous fuel in liquefied form; (c) a second outlet associated with an upper portion of said storage tank for delivering said gaseous fuel in vaporized form; (d) a cryogenic pump comprising a suction inlet fluidly connected to said first outlet; (e) a drive for said cryogenic pump comprising a power supply; (f) a vaporizer having a fuel inlet fluidly connected to a discharge outlet of said cryogenic pump; (g) a first engine that is a direct injection gaseous-fuelled internal combustion engine comprising a fuel injector for injecting said gaseous fuel directly into a combustion chamber at pressures greater than 200 bar, said fuel injector receiving said gaseous fuel through a pipe that is in fluid communication with a vaporizer fuel outlet; and (h) a second engine that is a fumigated gaseous-fuelled internal combustion engine comprising a fuel injector for injecting said gaseous fuel into an intake air manifold that delivers intake air to a combustion chamber of said second engine, wherein said gaseous fuel that is supplied to said second engine is delivered through a pipe that is in fluid communication with said second outlet, and wherein said second engine is said power supply for said cryogenic pump drive.