Patent ID: 6811138
Filing Date: 2004-11-02
Classification: F02M,F16K

Abstract:
A solenoid valve for controlling a fuel injector of an internal combustion engine, comprising:a housing part; an electromagnet; a movable armature including an anchor plate and a foundation bolt; a closing spring; a restoring spring; a control valve element moveable with the movable armature, the closing spring acting upon the control valve element in a closing direction of the control valve element, the control valve element operable in cooperation with a valve seat to open and close a fuel outflow channel of a control pressure space of the fuel injector; and a slidingly displaceable part slidingly displaceable on the foundation bolt in the closing direction under an influence of an inertial mass of the slidingly displaceable part against a tension force of the restoring spring, a first end of the restoring spring being situated in a stationary mount on the housing part, a second end of the restoring spring pressing the slidingly displaceable part against a first stop secured on the foundation bolt against the closing direction, a second stop being situated on the foundation bolt; wherein, when the control valve element strikes against the valve seat when the solenoid valve is closed, a displacement of the slidingly displaceable part on the foundation bolt resulting from the inertial mass and directed against the tension force of the restoring spring causes the slidingly displaceable part to abut against the second stop of the foundation bolt thereby preventing at least one of a post-pulse oscillation and a rebound of the control valve element from the valve seat.