公开(公告)号：US3985472A

公开(公告)日：1976-10-12

申请号：US570970

申请日：1975-04-23

申请人： Eugene P. Virtue ,  Richard J. Lech

发明人： Eugene P. Virtue ,  Richard J. Lech

IPC分类号： F04C11/00 ,  F04B1/26 ,  F04B49/00 ,  F04B49/08 ,  F04B49/24 ,  F04B23/04

CPC分类号： F04B49/007 ,  F04B49/08 ,  F04B49/24

摘要： A hydraulic pump arrangement and control circuit for supplying fluid at high volume and a high pressure to a work circuit. The system utilizes a fixed displacement pump, a variable displacement pump, a dual pressure compensator, and an unloading valve working together to provide high pressure fluid delivery while reducing the horsepower requirements of the fixed displacement pump and the variable displacement pump. High flow is provided through the utilization of the combined pumps and high pressure is attained through the unloading of the fixed displacement pump through the unloading valve and destroking of the variable displacement pump in response to signals provided by the dual pressure compensator.

摘要翻译： 一种液压泵装置和控制电路，用于向工作回路提供高容量和高压的流体。 该系统采用固定排量泵，可变排量泵，双压力补偿器和卸载阀一起工作，以提供高压流体输送，同时降低固定排量泵和可变排量泵的功率要求。 通过利用组合的泵提供高流量，并且通过卸载固定排量的泵并且响应于由双重压力补偿器提供的信号而破坏可变排量泵而获得高压。

公开(公告)号：US4050478A

公开(公告)日：1977-09-27

申请号：US683124

申请日：1976-05-04

申请人： Eugene P. Virtue ,  Richard J. Lech

发明人： Eugene P. Virtue ,  Richard J. Lech

IPC分类号： F04B49/00 ,  F04B49/08 ,  F04B49/24 ,  B67D5/46

CPC分类号： F04B49/007 ,  F04B49/08 ,  F04B49/24 ,  Y10T137/8663 ,  Y10T137/8671

摘要： A hydraulic pump arrangement and control circuit for supplying fluid at high volume and a high pressure to a work circuit. The system utilizes a fixed displacement pump, a variable displcement pump, a dual pressure compensator, and an unloading valve working together to provide high pressure fluid delivery while reducing the horsepower requirements of the fixed displacement pump and the variable displacement pump. High flow is provided through the utilization of the combined pumps and high pressure is attained through the unloading of the fixed displacement pump through the unloading valve and destroking of the variable displacement pump in response to signals provided by the dual pressure compensator.

摘要翻译： 一种液压泵装置和控制电路，用于向工作回路提供高容量和高压的流体。 该系统采用固定排量泵，可变排量泵，双重压力补偿器和卸载阀，共同作用，提供高压流体输送，同时降低了固定排量泵和可变排量泵的功率要求。 通过利用组合的泵提供高流量，并且通过卸载固定排量的泵并且响应于由双重压力补偿器提供的信号而破坏可变排量泵而获得高压。