Patent ID: 7654232

Claim:
A hydrogen engine system including a hydrogen feed unit, which generates hydrogen from organic hydride owing to dehydrogenation, and driving an engine with hydrogen gases as a fuel, the hydrogen engine system comprising: a hydrogenated liquid fuel tank, which holds a hydrogenated liquid fuel in a liquid phase; a preheater, to which the hydrogenated liquid fuel and a dehydrogenated fuel from the hydrogen feed unit are transported and which preheats the hydrogenated liquid fuel owing to heat exchange; an vaporizer, to which the hydrogenated liquid fuel as preheated by the preheater and exhaust gases of the engine are transported and which heats the hydrogenated liquid fuel to put the same in a vapor phase; and the hydrogen feed unit, to which the hydrogenated liquid fuel as vaporized by the vaporizer and the exhaust gases of the engine just after the engine are transported and which generates hydrogen gases owing to dehydrogenation to transport the same to the engine.