| 摘要 |
A valve for controlling fluids, having a piezoelectric actuator unit for actuating a valve member is proposed, which has at least one adjusting piston and at least one actuating piston that is guided in a valve body and actuates a valve closing body, which valve closing body cooperates with at least one valve seat embodied on the valve body and in the closing direction disconnects a control bore from an outlet chamber, from which a return conduit branches off, wherein between the adjusting piston and the actuating piston, a hydraulic chamber is disposed, which transmits a motion of the adjusting piston to the actuating piston. To keep the size of the actuator unit small, the actuating piston, at least when the valve closing body is closed, is supported essentially in a hydraulically force-balanced fashion.
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