Patent ID: 8505873

Claim:
A pressure regulating valve comprising: a first compression spring fixed in a valve housing for positioning a valve plunger connected to a magnetic armature in an electromagnetically non-excited position raised from a valve seat, in order to establish a communication, controllable by analog means, between at least two pressure medium channels opening into the valve housing, a second compression spring arranged in the valve housing coaxially with the first compression spring, a sleeve-shaped cap for setting and maintaining a force of the second compression spring at a pre-determined value wherein a position of the sleeve-shaped cap is set as a function of a selected current value in an exciter coil, and wherein the first compression spring is in the form of a control spring and the second compression spring is in the form of a variably adjustable adjusting spring acting oppositely to the control spring, the control spring and the adjusting spring being configured in such a manner that, through a coordination of a total force (Fs) and spring rates of the two compression springs with a force/distance curve of an electromagnet, a stroke-specific and force-specific spring drive is formed through variation of current in the exciter coil.