Patent ID: 6102299
Filing Date: 2000-08-15
Classification: F02M

Abstract:
A fuel injector for an internal combustion engine, comprised of:an armature assembly including an injector needle reciprocable between a closed position and an open position;a needle seat for receiving the injector needle in the closed position, the needle seat including a central opening therethrough wherein a bottom of the needle seat includes a counterbore having a diameter larger than a diameter of the central opening of the needle seat;an exit orifice disk disposed downstream of the needle seat; andan impinging jet atomizer disposed upstream of the exit orifice disk, the impinging jet atomizer including a feed disk defining at least two openings, the feed disk disposed downstream from the counterbore and a nozzle disk disposed downstream of the feed disk, the nozzle disk including at least two openings aligned with the at least two openings in the feed disk, for receiving fuel from the feed disk, and a passageway connecting the opening in the nozzle disk such that at least two separate channels of fuel flow from the openings in the feed disk to the openings in the nozzle disk and through the passageway to impinge on one another.