摘要 |
<p>The system has dual cylinders (1-4) with a dual piston (24), whose sides (24.1, 24.2) are connected with inlets (6, 8) of a rotary slide valve (5). The dual cylinders are alternatively supplied with high and low system pressures (pH, pN) by the valve, which is actuated by a hydraulic motor (13). The hydraulic motor and the inlet (6) are supplied with a high system pressure by a proportional valve (7), which is actuated by an electrically controlled actuator (20).</p> |