Patent ID: 7444980

Claim:
A direct injection fuel injector nozzle tip, comprising: an outer nozzle tip surface portion; an inner nozzle tip surface portion; a plurality of passages allowing fluid communication between the inner nozzle tip surface portion and the outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine, each of the plurality of passages having an inner surface aperture on the inner nozzle tip surface portion and an outer surface aperture on the outer nozzle tip surface portion; a first group of said passages having inner surface apertures located substantially in a first common plane; and a second group of said passages having inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane, the second group having more passages than the first group, and the second group including a passage having a cross-sectional size different than a cross-sectional size of a passage of the first group and including a passage having a taper.