Hydraulic unit with variable system pressure

摘要

The system pressure is adjusted by simultaneously operating a pressure limiting valve (2) on the pressure generator side and a press switch on the pressure consumer side. All system pressured detected by a pressure sensor (3) are signalled to a microcontroller (5). The system pressure at the pressure limiting valve is set using a positionable adjustment element (12) having a position switch (10) which signals to the microcontroller the start of the adjustment process. A check valve in the consumer-side pressure line (8) is simultaneously unblocked to create a uniform pressure between the pressure generator side and the pressure consumer side.