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A pico fuel injector valve (10) adapted to be received in an injector socket provided in an air intake manifold (12) of an internal combustion engine having an integral fuel rail (14). The fuel injector valve has a magnetically permeable cylindrical housing (26) having radial inlet ports (24) and an

A pico fuel injector valve (10) adapted to be received in an injector socket provided in an air intake manifold (12) of an internal combustion engine having an integral fuel rail (14). The fuel injector valve has a magnetically permeable cylindrical housing (26) having radial inlet ports (24) and an armature guide bore (32). A valve seat member (40) having an outlet port and a valve seat (48) is attached to the end of the cylindrical housing (26) having the guide bore. An orifice plate (56) having a calibrated orifice is disposed in an orifice plate recess (50) provided in the face of the valve seat member (40). A stator (76) disposed in the cylindrical housing has an axially disposed pole member (78) and a radial flange (80) attached to the other end of the cylindrical housing. A solenoid coil is wound directly around the pole member (78). An armature (34) is reciprocally disposed in the guide bore (32) and has a valve element provided on the face adjacent to the valve seat, a single annular seal (90) disposed intermediate the inlet ports (24) and the soleoid coil (86) is the only internal seal of the pico fuel injector valve. Electrical connection to the solenoid coil (86) is made through a pair of electrical terminals (94) extending external to the rear end of the pico fuel injector valve through the stator\s radial flange (80).

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In a fluid injector valve of the type having a magnetically permeable housing, a valve seat, a stator, an armature, and an electrically actuated solenoid coil for generating a magnetic field operative to displace the armature from the valve seat, characterized by: a magnetically permeable cylindrica

In a fluid injector valve of the type having a magnetically permeable housing, a valve seat, a stator, an armature, and an electrically actuated solenoid coil for generating a magnetic field operative to displace the armature from the valve seat, characterized by: a magnetically permeable cylindrical housing having a central axis, a guide bore provided at one end thereof concentric with said central axis and a plurality of fluid inlet ports radially disposed about said cylindrical housing adjacent to an internal end of said guide bore; a valve seat member attached to said one end of said cylindrical housing, said valve seat member having an outlet port provided therethrough concentric with said central axis, a concentric orifice plate recess provided in the face of said valve seat member opposite said cylindrical housing, and a valve seat circumscribing said outlet port on the face opposite said orifice plate recess; an orifice plate attached to the bottom of said orifice plate recess, said orifice plate having a calibrated orifice concentric with said outlet port; a stator having a radial flange attached to the other end of said cylindrical housing and having a pole member extending axially from said radial flange towards said valve seat member, said pole member having one end attached to said radial flange and a free end; solenoid coil means circumscribing said pole member; a cylindrical armature reciprocally disposed in said guide bore between said valve seat member and said free end of said pole member said armature having a valve element engageable with said valve seat and a return spring bore; a return spring compressively disposed between said armature and said free end of said pole member, said return spring received in said return spring bore and producing a force biasing said armature towards said valve seat member and said valve element into engagement with said valve seat; and seal means disposed in said cylindrical housing for providing a fluid tight seal between said plurality of fluid inlet ports and said solenoid coil.