Electromagnetic injector for an I.C. engine

Claim 1

Electroinjector for an I.C. engine, said electroinjector comprising a core of ferromagnetic material, a coil surrounding the core, an injection nozzle, a small tubular movable armature positioned between the core and the injection nozzle and being coaxial with both said core and said injection nozzle, a return spring pushing the small armature towards said injection nozzle, a tube, partly inserted inside the core, acting as inner guide for the small armature, a duct for delivering the fuel towards the injection nozzle, an outer shell closing the magnetic circuit together with the core and the small armature, and there being a plate and a shutter, the electroinjector being characterized in that the small armature is provided with an end wall constituted by said plate with said plate being formed of material resistant to deformation due to impact, and directly fastened on to the cylindrical side wall of the small armature independently of said shutter, and said shutter being made of sealing material and fixedly secured directly to said plate separate and apart from said armature.