Patent ID: 6676044
Filing Date: 2004-01-13
Classification: F02M,Y10S

Abstract:
A fuel injector for use with an internal combustion engine, the fuel injector comprising:a valve group subassembly that is independently operable and testable prior to being assembled in a fuel injector, the valve group subassembly including: a tube assembly having a longitudinal axis extending between a first end and a second end, the tube assembly including an inlet tube having an inlet tube face; a seat secured at the second end of the tube assembly, the seat defining an opening; a lower guide contiguous to the seat; an armature assembly disposed within the tube assembly, the armature assembly having a closure member disposed at one end of the armature assembly and an armature portion disposed at the other end of the armature assembly, the armature assembly having an armature face; a member biasing the armature assembly toward the seat; a filter assembly disposed within the tube assembly; an adjusting tube disposed within the tube assembly proximate the second end; a non-magnetic shell extending axially along the axis and coupled at one end of the shell to the inlet tube; a valve body coupled to the other end of the non-magnetic shell; a lift setting device that sets a lift distance of the armature assembly, the lift setting device contiguous to the lower guide; a valve seat disposed within the valve body and contiguously engaging the closure member; and a first attaching portion; a coil group subassembly that is independently operable and testable prior to being assembled in a fuel injector, the coil group subassembly including: a housing; a bobbin disposed partially within the housing, the bobbin having at least one contact portion formed thereon; a solenoid coil operable to displace the armature assembly with respect to the seat, the solenoid coil being electrically coupled to the at one contact portion; at least one pre-bent terminal being electrically coupled to the at least one contact portion; at least one overmold; and a second attaching portion fixedly connected to the first attaching portion.