| 摘要 |
<p>POWER TRANSMISSION A hydraulic system comprising a fixed displacement pump driven by a prime mover operable at variable speeds and a flow control valve operable to return a portion of the hydraulic fluid from the outlet of the pump to the inlet of the pump and draw fluid from a reservoir to replenish the fluid at the inlet when the pump is operated at higher speeds. An auxiliary passage extends from the reservoir and communicates with the inlet of the pump upstream from the system flow drawn from the reservoir by the opening of the flow control valve and normally isolated during low speed operation from the bypass flow by the flow control valve thereby providing auxiliary flow to the inlet at lower speeds.</p> |
