Patent ID: 7117849
Filing Date: 2006-10-10
Classification: F02M,Y02T

Abstract:
1. A hydrogen fuel injector, comprising: a hydrogen fuel channel configured to receive pressurized gaseous hydrogen fuel from a hydrogen fuel rail, the hydrogen fuel rail having tolerances sufficiently small so as to substantially prevent hydrogen molecules from leaking; a nozzle in fluid communication with the hydrogen fuel channel, wherein the nozzle includes tapered portions configured to be seated adjacent a cylinder head; a pintle having an opened position and a closed position, wherein pressurized gaseous hydrogen fuel is introduced from the nozzle directly into a combustion chamber when the pintle is in the opened position and wherein introduction of the pressurized gaseous hydrogen fuel is substantially blocked when the pintle is in the closed position; a pintle controller configured to selectively move the pintle between the closed position and the opened position; and a hydrogen gas dampener configured to lessen impact of pintle closing.