ELECTROMAGNETIC INJECTOR Russian patent published in 1998 - IPC

FIELD: mechanical engineering. SUBSTANCE: injector has hollow cylindrical body, core coupled to it, winding, nonmagnetic insert, and valve element pressed to seat by return spring. Guide element in form of internal circular rib or separate projections is provided on nonmagnetic insert. Guide element interacts with armature which is connected rigidly to valve element in zone of armature end removed from valve element. Nonmagnetic insert is connected rigidly to valve body which is in its turn coupled to hollow cylindrical body. Sealing ring is positioned between nonmagnetic insert and core. Injector is fitted with nonmagnetic washer adjacent to core which limits armature movement to core. Bead is made on washer round hole which locks return spring in radial position. Return spring presses washer to core end. EFFECT: enhanced sealing, reduced requirements for accuracy of part manufacture. 7 cl, 1 dwg