公开(公告)号：US08353157B2

公开(公告)日：2013-01-15

申请号：US12536717

申请日：2009-08-06

申请人： Richard J. Lech ,  Garrett Anderson ,  Matthew J. Hennemann ,  C. David Anderson

发明人： Richard J. Lech ,  Garrett Anderson ,  Matthew J. Hennemann ,  C. David Anderson

IPC分类号： F16D31/02

CPC分类号： F15B11/028 ,  F04B49/002 ,  F15B21/082 ,  F15B2211/20553 ,  F15B2211/253 ,  F15B2211/41509 ,  F15B2211/6346 ,  F15B2211/76 ,  F15B2211/85

摘要： An open center hydraulic system that includes a variable displacement pump having an inlet, an outlet and a sensing port, the pump configured to provide reduced fluid flow in response to a predetermined fluid pressure differential between the outlet and the sensing port. A first fluid circuit and a second fluid circuit each serve as signal lines with the pump sensing port. During operation of the second fluid circuit, reduced fluid flow from the pump outlet is achieved as a result of the sum of induced fluid pressure reductions of respective controlled pressure reduction devices approaching the predetermined pump fluid pressure differential.

摘要翻译： 一种开放中心液压系统，其包括具有入口，出口和感测端口的可变排量泵，所述泵构造成响应于出口和感测端口之间的预定流体压差而提供减小的流体流量。 第一流体回路和第二流体回路各自用作与泵感测端口的信号线。 在第二流体回路的操作期间，作为接近预定的泵流体压力差的各控制减压装置的致动流体压力降低之和的结果，实现了来自泵出口的减少的流体流量。

公开(公告)号：US20110030363A1

公开(公告)日：2011-02-10

申请号：US12536717

申请日：2009-08-06

申请人： Richard J. LECH ,  Garrett Anderson ,  Matthew J. Hennemann ,  C. David Anderson

发明人： Richard J. LECH ,  Garrett Anderson ,  Matthew J. Hennemann ,  C. David Anderson

IPC分类号： F15B11/16 ,  F15B21/08

CPC分类号： F15B11/028 ,  F04B49/002 ,  F15B21/082 ,  F15B2211/20553 ,  F15B2211/253 ,  F15B2211/41509 ,  F15B2211/6346 ,  F15B2211/76 ,  F15B2211/85

摘要： An open center hydraulic system that includes a variable displacement pump having an inlet, an outlet and a sensing port, the pump configured to provide reduced fluid flow in response to a predetermined fluid pressure differential between the outlet and the sensing port. A first fluid circuit and a second fluid circuit each serve as signal lines with the pump sensing port. During operation of the second fluid circuit, reduced fluid flow from the pump outlet is achieved as a result of the sum of induced fluid pressure reductions of respective controlled pressure reduction devices approaching the predetermined pump fluid pressure differential.

摘要翻译： 一种开放中心液压系统，其包括具有入口，出口和感测端口的可变排量泵，所述泵构造成响应于出口和感测端口之间的预定流体压差而提供减小的流体流量。 第一流体回路和第二流体回路各自用作与泵感测端口的信号线。 在第二流体回路的操作期间，作为接近预定的泵流体压力差的各控制减压装置的致动流体压力降低之和的结果，实现了来自泵出口的减少的流体流量。