Patent ID: 7422194

Claim:
A solenoid valve, comprising: at least one valve orifice to form a sealing seat; a valve member cooperating therewith to release and close the sealing seat; at least one spring element to stress the valve member; an electromagnet to activate the valve member, the electromagnet having a magnetic core; and at least one additional spring element in an essentially unstressed neutral position to act upon the valve member in an activation direction, the valve member being set apart from the sealing seat, wherein the at least one additional spring element is hollow, one end of the additional spring element being secured to the magnetic core of the electromagnet and the other end of the additional spring element being secured to the valve member, the at least one additional spring element including a section radially expandable toward an outside with regard to a valve axis to provide an axial spring force in the activation direction; wherein the essentially unstressed neutral position of the additional spring element is assigned a position of the valve member between limits of a valve lift.