| 摘要 |
<p>A hydraulic system comprising a reversible variable displacement pump (10), a hydraulic servo motor (14,15) for controlling the direction and amount of displacement of the pump (10), a fluid motor (13) connected in parallel to the pump (10) and adapted to be driven by the pump (10), a pilot operated directional valve (23) for controlling the position and direction of the servo motor system (14,15), and a valve (21) for sensing the displacement of said pump (10) and applying a force to the directional valve (23) opposite to the force of the pilot pressure (from 24) for moving the valve (23).</p> |
