Abstract: A fuel injector includes a tubular injector body which has an open, upper end and defines an axial fuel passage. A solenoid actuator assembly is disposed in the injector body and includes a spool-like bobbin with a central through-bore and a wound wire coil supported thereon. A magnetic circuit pole subassembly includes a fuel tube, a valve guide, and a pole piece. The fuel tube has a tubular portion and a lower circular flange portion radially extending from a lower terminal end of the tubular portion to contact the open, upper end of the injector body. The nonmagnetic valve guide has a guide cylindrical portion, extending axially downward through the central throughbore and is closely encircled by the bobbin, and a guide circular flange portion radially extending from an upper end of the guide cylindrical portion and mating with the lower circular flange portion of the fuel tube.

Abstract: A fuel injector for delivery of fuel to an internal combustion engine has an injector body defining a central axis, a fuel discharge opening coaxial with the central axis having a valve seat extending thereabout, and a valve element normally seated on the valve seat to close the fuel discharge opening. The valve element is operable to move off of the valve seat to open the fuel discharge opening allowing fuel to pass through. A filter-valve guide is coaxially positioned upstream of the valve seat and includes an annular closed bottom, an outer wall extending coaxially upwardly from the annular closed bottom to define an outer diameter, and an inner wall extending coaxially upwardly from the annular closed bottom to define a central opening. The valve element passes through the central opening and the guide inner wall guides the valve element as it moves relative to the valve seat.