HYDRAULIC SYSTEMS UTILIZING COMBINATION OPEN- AND CLOSED-LOOP PUMP SYSTEMS
    1.
    发明申请
    HYDRAULIC SYSTEMS UTILIZING COMBINATION OPEN- AND CLOSED-LOOP PUMP SYSTEMS 有权
    液压系统利用组合式开闭式循环泵系统

    公开(公告)号:US20130000293A1

    公开(公告)日:2013-01-03

    申请号:US13538082

    申请日:2012-06-29

    IPC分类号: F15B13/00 F15B13/04

    摘要: A pump system includes a closed-loop fluid circuit and an open-loop fluid circuit. The closed-loop fluid circuit includes a motor for rotating a first component connected to the closed-loop fluid circuit. A closed-loop pump drives the motor up to a first maximum rotational speed. The open-loop fluid circuit includes an open-loop pump for driving a second component connected to the open-loop fluid circuit. A control circuit includes a control valve for switching the outflow from the open-loop pump. The control valve selectively connects the open-loop pump to the closed-loop fluid circuit and simultaneously disconnects the open-loop pump from the open-loop fluid circuit. When the open-loop pump is connected to the closed-loop circuit, the closed-loop pump and the open-loop pump drive the motor at a second rotational speed greater than the first maximum rotational speed.

    摘要翻译: 泵系统包括闭环流体回路和开环流体回路。 闭环流体回路包括用于旋转连接到闭环流体回路的第一部件的马达。 闭环泵驱动电机达到第一最大转速。 开环流体回路包括用于驱动连接到开环流体回路的第二部件的开环泵。 控制电路包括用于切换来自开环泵的流出的控制阀。 控制阀选择性地将开环泵连接到闭环流体回路,同时将开环泵与开环流体回路断开连接。 当开环泵连接到闭环回路时,闭环泵和开环泵以大于第一最大转速的第二转速驱动电动机。

    Fluid bypass system
    2.
    发明授权
    Fluid bypass system 有权
    流体旁通系统

    公开(公告)号:US08607559B2

    公开(公告)日:2013-12-17

    申请号:US12648410

    申请日:2009-12-29

    IPC分类号: F16D31/02 F15B13/04

    摘要: A method for actuating a bypass control valve assembly of a fluid system includes receiving a first input signal at an electronic control unit. The first input signal is related to an active position of a direction control valve that is in fluid communication with a fluid pump and a fluid actuation device. The directional control valve includes a neutral position that provides fluid communication between a fluid inlet port of the directional control valve and a fluid outlet port of the directional control valve. A second input signal is received at the electronic control unit. The second input signal is related to the rotational speed of the fluid pump. The second input signal is compared to a limit. A drain valve of a bypass valve assembly is actuated so that fluid communication between the fluid pump and a fluid reservoir through the bypass valve assembly is blocked.

    摘要翻译: 用于致动流体系统的旁路控制阀组件的方法包括在电子控制单元处接收第一输入信号。 第一输入信号涉及与流体泵和流体致动装置流体连通的方向控制阀的活动位置。 方向控制阀包括在方向控制阀的流体入口和方向控制阀的流体出口之间提供流体连通的空档位置。 在电子控制单元处接收第二输入信号。 第二输入信号与流体泵的转速有关。 将第二个输入信号与极限进行比较。 旁通阀组件的排水阀被致动,使得流体泵与通过旁通阀组件的流体储存器之间的流体连通被阻挡。

    Hydraulic systems utilizing combination open- and closed-loop pump systems
    3.
    发明授权
    Hydraulic systems utilizing combination open- and closed-loop pump systems 有权
    利用组合式开式和闭式泵系统的液压系统

    公开(公告)号:US09217447B2

    公开(公告)日:2015-12-22

    申请号:US13538082

    申请日:2012-06-29

    摘要: A pump system includes a closed-loop fluid circuit and an open-loop fluid circuit. The closed-loop fluid circuit includes a motor for rotating a first component connected to the closed-loop fluid circuit. A closed-loop pump drives the motor up to a first maximum rotational speed. The open-loop fluid circuit includes an open-loop pump for driving a second component connected to the open-loop fluid circuit. A control circuit includes a control valve for switching the outflow from the open-loop pump. The control valve selectively connects the open-loop pump to the closed-loop fluid circuit and simultaneously disconnects the open-loop pump from the open-loop fluid circuit. When the open-loop pump is connected to the closed-loop circuit, the closed-loop pump and the open-loop pump drive the motor at a second rotational speed greater than the first maximum rotational speed.

    摘要翻译: 泵系统包括闭环流体回路和开环流体回路。 闭环流体回路包括用于旋转连接到闭环流体回路的第一部件的马达。 闭环泵驱动电机达到第一最大转速。 开环流体回路包括用于驱动连接到开环流体回路的第二部件的开环泵。 控制电路包括用于切换来自开环泵的流出的控制阀。 控制阀选择性地将开环泵连接到闭环流体回路,同时将开环泵与开环流体回路断开连接。 当开环泵连接到闭环回路时,闭环泵和开环泵以大于第一最大转速的第二转速驱动电动机。

    FLUID BYPASS SYSTEM
    4.
    发明申请
    FLUID BYPASS SYSTEM 有权
    流体旁路系统

    公开(公告)号:US20110154816A1

    公开(公告)日:2011-06-30

    申请号:US12648410

    申请日:2009-12-29

    IPC分类号: F15B13/02 F15B13/043 E02F9/22

    摘要: A method for actuating a bypass control valve assembly of a fluid system includes receiving a first input signal at an electronic control unit. The first input signal is related to an active position of a direction control valve that is in fluid communication with a fluid pump and a fluid actuation device. The directional control valve includes a neutral position that provides fluid communication between a fluid inlet port of the directional control valve and a fluid outlet port of the directional control valve. A second input signal is received at the electronic control unit. The second input signal is related to the rotational speed of the fluid pump. The second input signal is compared to a limit. A drain valve of a bypass valve assembly is actuated so that fluid communication between the fluid pump and a fluid reservoir through the bypass valve assembly is blocked.

    摘要翻译: 用于致动流体系统的旁路控制阀组件的方法包括在电子控制单元处接收第一输入信号。 第一输入信号涉及与流体泵和流体致动装置流体连通的方向控制阀的活动位置。 方向控制阀包括在方向控制阀的流体入口和方向控制阀的流体出口之间提供流体连通的空档位置。 在电子控制单元处接收第二输入信号。 第二输入信号与流体泵的转速有关。 将第二个输入信号与极限进行比较。 旁通阀组件的排水阀被致动,使得流体泵与通过旁通阀组件的流体储存器之间的流体连通被阻挡。

    Method and apparatus for automatic pump shutoff
    5.
    发明授权
    Method and apparatus for automatic pump shutoff 有权
    自动关闭泵的方法和装置

    公开(公告)号:US08136353B2

    公开(公告)日:2012-03-20

    申请号:US12267898

    申请日:2008-11-10

    IPC分类号: F16D31/02

    摘要: A method of detecting a fluid leak in a hydraulic fluid circuit includes preventing fluid from entering the circuit when an actual outlet flow rate from a pump is positive while a requested outlet flow rate to a hydraulic machine is zero. An outlet port of a variable displacement port can be selectively blocked, while in a fixed displacement pump (FDP) fluid can be diverted from the outlet port to a secondary fluid circuit. The actual outlet flow rate can be measured using a flow sensor or a swash plate angle depending on the pump design. A hydraulic fluid circuit includes a hydraulic machine, a pump, a valve at an outlet port of the pump, and a controller. The controller determines the requested flow rate, and actuates the valve to prevent fluid from entering the circuit whenever the actual outlet flow rate is positive during zero requested flow rate.

    摘要翻译: 检测液压流体回路中的流体泄漏的方法包括当来自泵的实际出口流量为正时防止流体进入电路,而对液压机器的要求出口流量为零。 可选择性地阻塞可变排量端口的出口,而在固定排量泵(FDP)中,流体可以从出口转向次级流体回路。 实际的出口流量可以使用流量传感器或斜盘角度来测量,这取决于泵的设计。 液压流体回路包括液压机,泵,泵的出口处的阀以及控制器。 控制器确定要求的流量,并且在零请求流量期间实际出口流量为正时,启动阀门以防止流体进入回路。

    Method and Apparatus for Automatic Pump Shutoff
    6.
    发明申请
    Method and Apparatus for Automatic Pump Shutoff 有权
    自动泵关闭方法及装置

    公开(公告)号:US20100115937A1

    公开(公告)日:2010-05-13

    申请号:US12267898

    申请日:2008-11-10

    IPC分类号: F15B13/01 F15B20/00 F04B49/03

    摘要: A method of detecting a fluid leak in a hydraulic fluid circuit includes preventing fluid from entering the circuit when an actual outlet flow rate from a pump is positive while a requested outlet flow rate to a hydraulic machine is zero. An outlet port of a variable displacement port can be selectively blocked, while in a fixed displacement pump (FDP) fluid can be diverted from the outlet port to a secondary fluid circuit. The actual outlet flow rate can be measured using a flow sensor or a swash plate angle depending on the pump design. A hydraulic fluid circuit includes a hydraulic machine, a pump, a valve at an outlet port of the pump, and a controller. The controller determines the requested flow rate, and actuates the valve to prevent fluid from entering the circuit whenever the actual outlet flow rate is positive during zero requested flow rate.

    摘要翻译: 检测液压流体回路中的流体泄漏的方法包括当来自泵的实际出口流量为正时防止流体进入电路,而对液压机器的要求出口流量为零。 可选择性地阻塞可变排量端口的出口,而在固定排量泵(FDP)中,流体可以从出口转向次级流体回路。 实际的出口流量可以使用流量传感器或斜盘角度来测量,这取决于泵的设计。 液压流体回路包括液压机,泵,泵的出口处的阀以及控制器。 控制器确定要求的流量,并且在零请求流量期间实际出口流量为正时,启动阀门以防止流体进入回路。