| 摘要 |
PURPOSE:To reduce a supply flow to a gear in low pressure for saving energy in a motor driven pump. CONSTITUTION:A pump 11 driven by a motor 10 to discharge pressurized oil of flow proportional to the rotational speed is provided. A load pressure responsive valve 20 for reducing oil flow supplied to a control valve 14 in the neutral position of a steering and increasing the pressure oil flow supplied to the control valve 14 on the basis of the increase of the load pressure is connected to a discharge path 15 of the pump 11. |
