Two piece guided nozzle assembly for a fuel injector

A fuel injector valve closing orifice nozzle assembly comprising:

• a lower tip component having a first annular locating surface and an annular needle valve seat, and defining a lower guide bore and a plurality of spray orifices, and said first annular locating surface, said annular needle valve seat and said lower guide bore sharing a common first centerline, and said spray orifices being distributed around said first centerline;
• an upper tip component in contact with said lower tip component and having a second annular locating surface, and defining an upper guide bore, and said second annular locating surface and said upper guide bore sharing a common second centerline;
• a needle valve member having an upper guide portion positioned in said upper guide bore, and having a lower guide portion positioned in said lower guide bore, and being movable between an open position in which said spray orifices are open, and a closed position in which one end of said spray orifices is at least partially covered;
• and
• said first centerline being concentrically coupled to said second centerline via an interaction of said first annular locating surface with said second annular locating surface.

A fuel injector nozzle assembly comprising:

• a lower tip component having a first annular locating surface and an annular needle valve seat, and defining a lower guide bore and a plurality of spray orifices, and said first annular locating surface, said annular needle valve seat and said lower guide bore sharing a common first centerline, and said spray orifices being distributed around said first centerline;
• an upper tip component in contact with said lower tip component and having a second annular locating surface, and defining an upper guide bore, and said second annular locating surface and said upper guide bore sharing a common second centerline;
• a needle valve member having an upper guide portion positioned in said upper guide bore, and having a lower guide portion positioned in said lower guide bore, and being movable between an open position in which said spray orifices are open, and a closed position in which one end of said spray orifices is at least partially covered;
• and
• said first centerline being concentrically coupled to said second centerline via an interaction of said first annular locating surface with said second annular locating surface, and said interaction is a casing component in contact with said first locating surface and said second locating surface.