公开(公告)号：US4303091A

公开(公告)日：1981-12-01

申请号：US125096

申请日：1980-02-27

申请人： Siegfried Hertell ,  Claus Kirchherr ,  Horst Kahl

发明人： Siegfried Hertell ,  Claus Kirchherr ,  Horst Kahl

IPC分类号： F15B13/04

CPC分类号： F15B13/0417 ,  Y10T137/2579 ,  Y10T137/2589 ,  Y10T137/2594 ,  Y10T137/87185

摘要： A hydraulic flow control apparatus is provided which is adapted to provide a constant pressure differential between a pump and an external load. the apparatus includes a housing, and a balance piston slideably mounted therein. The pump pressure acts to bias the piston in a direction toward a pump bypass position, and the piston is urged in the other direction and toward its operating position by the consumer pressure and a spring. Means are also provided whereby the pressure of the pump necessary to move the piston toward its bypass position and against the force of the spring, may be minimized during operation in the idling mode, to thereby minimize power consumption.

摘要翻译： 提供了一种液压流量控制装置，其适于在泵和外部负载之间提供恒定的压力差。 该装置包括壳体和可滑动地安装在其中的平衡活塞。 泵的压力作用是朝向泵旁通位置的方向偏压活塞，并且活塞在消耗压力和弹簧的作用下沿另一方向被推动并朝向其运行位置。 还提供了一种装置，其中在怠速模式下的操作期间，使活塞朝向其旁通位置移动并抵抗弹簧的力所需的泵的压力可被最小化，从而使功率消耗最小化。

公开(公告)号：US4355655A

公开(公告)日：1982-10-26

申请号：US304716

申请日：1981-09-23

申请人： Siegfried Hertell ,  Claus Kirchherr ,  Horst Kahl ,  Siegfried Hoffmann

发明人： Siegfried Hertell ,  Claus Kirchherr ,  Horst Kahl ,  Siegfried Hoffmann

IPC分类号： F15B13/04

CPC分类号： F15B13/0417 ,  Y10T137/2579 ,  Y10T137/2589 ,  Y10T137/2594 ,  Y10T137/87185

摘要： A hydraulic flow control apparatus is provided which is adapted to provide a constant pressure differential between a pump and an external load. The apparatus includes a housing, and a balance piston slideably mounted therein. The pump pressure acts to bias the piston in a direction toward a pump bypass position, and the piston is urged in the other direction and toward its operating position by the consumer pressure and a spring. Means are also provided whereby the pressure of the pump necessary to move the piston toward its bypass position and against the force of the spring, may be minimized during operation in the idling mode, to thereby minimize power consumption.

摘要翻译： 提供了一种液压流量控制装置，其适于在泵和外部负载之间提供恒定的压力差。 该装置包括壳体和可滑动地安装在其中的平衡活塞。 泵的压力作用是朝向泵旁通位置的方向偏压活塞，并且活塞在消耗压力和弹簧的作用下沿另一方向被推动并朝向其运行位置。 还提供了一种装置，其中在怠速模式下的操作期间，使活塞朝向其旁通位置移动并抵抗弹簧的力所需的泵的压力可被最小化，从而使功率消耗最小化。

公开(公告)号：US4738104A

公开(公告)日：1988-04-19

申请号：US841575

申请日：1986-03-20

申请人： Wolfgang Hahmann ,  Claus Kirchherr

发明人： Wolfgang Hahmann ,  Claus Kirchherr

IPC分类号： F02D29/04 ,  F15B1/00 ,  F16D31/02

CPC分类号： F15B11/0423 ,  F02D29/04 ,  F15B13/0422 ,  F15B2211/275 ,  F15B2211/31511 ,  F15B2211/36

摘要： A hydraulic power system is disclosed which comprises an internal combustion engine having a speed regulator, and which serves to drive a hydraulic system including a pump and a consumer or load. A throttle valve is positioned in the hydraulic system, and the throttle valve is connected to an adjustable controller, such that the volume flow rate to the consumer is proportional to the control signal delivered to the throttle valve by the controller. The same control signal of the controller is also delivered to the speed regulator of the engine. In one disclosed embodiment, the hydraulic system includes a plurality of consumers connected to a common pump, and each consumer includes an associated throttle valve and controller. Also, means are provided for weighting the several control signals from the controllers, and summing the weighted signals so that a composite adjusting signal is delivered to the speed regulator of the engine.

摘要翻译： 公开了一种液压动力系统，其包括具有速度调节器的内燃机，其用于驱动包括泵和消耗器或负载的液压系统。 节流阀定位在液压系统中，并且节流阀连接到可调控制器，使得到消费者的体积流量与由控制器传送到节流阀的控制信号成比例。 控制器的相同控制信号也传送到发动机的调速器。 在一个公开的实施例中，液压系统包括连接到公共泵的多个消耗器，并且每个消耗器包括相关联的节流阀和控制器。 此外，提供了用于对来自控制器的几个控制信号进行加权的装置，并且对加权信号求和，使得复合调整信号被传送到发动机的速度调节器。