Hydromechanical linear converter

A hydromechanical linear converter comprising:

• a cylinder;
• a piston unit movable relative to the cylinder and having a piston, the cylinder and the piston of the piston unit delimiting a hydraulic working chamber;
• a working connection and a further fluid connection opening into the hydraulic working chamber;
• a valve unit, the fluid connection communicating hydraulically with the valve unit, the valve unit configured as a seat valve unit having a supply connection, the valve unit being switchable between a first switching position connecting the supply connection to the fluid connection and a second switching position blocking fluid relative to the supply connection, the valve unit comprising;
• a valve housing having a valve seat;
• a valve body movable along a valve axis relative to the valve housing and having a valve head cooperating with the valve seat;
• a spring unit which preloads the valve body into a position corresponding to the first switching position of the valve unit, in which the valve head is lifted from the valve seat;
• and
• an electromagnetic actuator acting on the valve body via a purely mechanical action, the electromagnetic actuator operable to adjust the valve body against a force of the spring unit into a position corresponding to the second switching position of the valve unit, in which position the valve head rests sealingly on the valve seat;
• wherein the valve body is sealingly guided in the valve housing in such a way that the valve body together with the valve housing delimits a hydraulic operating chamber, the hydraulic operating chamber communicating hydraulically with the fluid connection via a compensation channel and a pressurization of the hydraulic operating chamber acts on the valve body in an opposite direction to the spring unit;
• and
• wherein in a projection along the valve axis, surface portions of the valve body delimiting the hydraulic operating chamber are larger than surface portions of the valve body which are exposed to a pressure prevailing in the fluid connection in the second switching position of the valve unit, the pressurization of the fluid connection in the second switching position acting on the valve body in a same direction as the spring unit.