Patent ID: 7165754

Claim:
Electromagnetic valve, in particular for wheel slip control systems of motor vehicles, comprising: a valve housing in which a valve closure member is movably guided, a magnet armature that performs a stroke movement in the direction of a magnet core arranged in the valve housing for the proportional actuation of the valve closure member in response to the electromagnetic energization of a valve coil fitted to the valve housing, and a spring positioning the magnet armature at a defined axial distance from the magnet core in the electromagnetically non-energized valve position so that the magnet armature is isolated from the magnet core by a space, wherein the valve coil can be actuated by an electric current in such a manner that the valve closure member, beyond the proportional actuation, impinges upon the valve seat with a defined impulse force, wherein in time intervals when the fluid pressure at the valve closure member is at a minimum, a current is applied to the valve coil which makes the valve closure member impinge with the maximum stroke and the maximum speed upon the valve seat until the sediments sticking to the valve seat and/or the valve closure member are detached.