Patent ID: 6523349
Filing Date: 2003-02-25
Classification: F01K,Y02E

Abstract:
A low or no pollution emitting combustion engine to provide power for various applications such as vehicle propulsion or stationary electric power generation, the engine comprising in combination:an air inlet; a source of fuel at least partially including hydrogen; an air separator including an inlet coupled to said air inlet, said air separator configured to remove nitrogen from the air entering said air inlet so that remaining air is primarily oxygen and with other non-oxygen constituents, and an oxygen enriched air outlet; a fuel combustor, said fuel combustor receiving fuel from said source of fuel and oxygen from said oxygen enriched air outlet of said air separator, said combustor combusting said fuel with said oxygen to produce elevated pressure and elevated temperature combustion products including steam, said combustor having a discharge for said combustion products; wherein at least part of a non-steam portion of the combustion products is removed from the combustion products after discharge from said combustor, so that the combustion products have more steam than the combustion products at said discharge; and a return line for routing at least a portion of the steam rich combustion products back to said combustor.