Patent ID: 6666388
Filing Date: 2003-12-23
Classification: F02M

Abstract:
A plug pin for an internal combustion engine fuel injector nozzle, said nozzle comprising a conical wall with orifices for injecting fuel, said plug pin comprising a tip adapted to engage said wall at a portion adjacent to said orifices for closing said orifices upon the action of an axial force;wherein said tip comprises a truncated-cone-shaped portion having an outer surface resting entirely on said wall; wherein said truncated-cone-shaped portion has a height ranging between about 0.12 mm and about 0.18 mm; wherein said orifices are spaced uniformly about said wall; and wherein a recess is provided adjacent to said orifices to collect a given amount of fuel and ensure uniform fuel flow through said orifices, said recess being located on a conical portion of said tip opposite said orifices; said recess being annular.