| 摘要 |
<p>In the case of a hydraulic system, at least one control valve (15) with at least three switching positions is connected to a control pump (18), the control element (18a) of the control pump being connected, via a control return line, to the supply line (19) downstream of the control valve (15, 15'), for the purpose of maintaining a constant operating pressure drop. The return-flow line (21) is led via the control valve (15) which is connected, via switch-on valves allocated to the consumers, to the consumers (V), the return-flow line (21) having assigned to it a measurement sensor which, in conjunction with the measurement sensor of the supply line, forms a control variable for a control unit (R). By this means, a cost-effective closed-loop or open-loop control of the consumers is achieved in two effective directions, via a control valve, in a precise and low-energy manner. <IMAGE></p> |
