On-demand electro-hydraulic steering system
    1.
    发明申请
    On-demand electro-hydraulic steering system 有权
    按需电动液压转向系统

    公开(公告)号:US20090014230A1

    公开(公告)日:2009-01-15

    申请号:US12222768

    申请日:2008-08-15

    Abstract: A method of steering a vehicle with a hydraulic steering system is disclosed. A first control signal is sent to a pilot valve. The pilot valve is operated to direct pilot fluid to a main valve in response to the first control signal. The main valve is opened to a first position in response to the pilot fluid. Fluid is directed through the main valve to a first actuator. Resistance to actuation of the first actuator is detected. The detected resistance is compared to a threshold resistance. A second control signal is sent to the pilot valve when the detected resistance exceeds the threshold resistance. The pilot valve is operated to direct pilot fluid to the main valve in response to the second control signal. The main valve is opened to a second position in response to the pilot fluid. Fluid is directed through the main valve to the first actuator and a second actuator.

    Abstract translation: 公开了一种用液压转向系统转向车辆的方法。 第一控制信号被发送到先导阀。 操纵先导阀以响应于第一控制信号将先导流体引导到主阀。 主阀响应于先导流体而打开到第一位置。 流体通过主阀被引导到第一致动器。 检测到第一致动器的致动阻力。 将检测到的电阻与阈值电阻进行比较。 当检测到的电阻超过阈值电阻时,第二控制信号被发送到先导阀。 操纵导阀以响应于第二控制信号将先导流体引导到主阀。 主阀响应于先导流体而打开到第二位置。 流体通过主阀导向第一致动器和第二致动器。

    Hydraulic machine comprising dual gerotors
    2.
    发明授权
    Hydraulic machine comprising dual gerotors 有权
    液压机包括双转子

    公开(公告)号:US06195990B1

    公开(公告)日:2001-03-06

    申请号:US09231344

    申请日:1999-01-13

    CPC classification number: F04C11/001 F04C2/103

    Abstract: A hydraulic machine of the gerotor type. The machine uses two gerotors which are preferably coplanar, and positioned nearly concentric to each other. This dual arrangement approximately doubles the displacement of hydraulic fluid per revolution, compared with a single gerotor, and thus doubles power transfer. Yet the housing containing the gerotors need only be large enough to contain the larger gerotor.

    Abstract translation: 齿轮式液压机。 该机器使用两个转子,它们最好是共面的并且彼此几乎同心。 与单次转子相比,这种双重布置大大增加了每转液压流体的位移,从而使功率传递加倍。 然而,含有转脚架的房屋只需要足够大才能容纳较大的摆放器。

    Accumulator charging valve
    3.
    发明授权
    Accumulator charging valve 失效
    蓄能器充气阀

    公开(公告)号:US5513958A

    公开(公告)日:1996-05-07

    申请号:US237536

    申请日:1994-05-03

    CPC classification number: F15B1/027 F15B13/01 Y10T137/2605 Y10T137/2617

    Abstract: An accumulator charging valve has a first valve spool determining a cut-in pressure level at which fluid from a pump is directed to an accumulator and a second valve spool determining the cut-out pressure level at which fluid is no longer directed to the accumulator. When the pressure at the accumulator reaches a predetermined high level, the second valve spool moves to a position communicating an inlet port with an intermediate passage. The first spool is normally at a position blocking the intermediate passage from an outlet port so that a flow path is established through a pair of orifices reducing the pressure in the intermediate passage and the inlet port. The reduced pressure is transmitted to an actuating chamber to hold the second valve spool in the above noted position and to a pump displacement controller to destroke the pump to a low standby pressure displacement. When the pressure at the accumulator drops to a predetermined low level, the first valve spool moves to a position communicating the intermediate passage with the outlet port venting the actuating chamber so that the second valve spool moves to a position blocking the inlet port from the intermediate passage. This increases the pressure directed to the displacement controller upstroking the pump to a high pressure displacement. The cycle is repeated when the pressure reaches the predetermined high level.

    Abstract translation: 蓄能器充气阀具有第一阀线圈,其确定来自泵的流体被引导到蓄能器的切入压力水平,以及确定流体不再被引导到蓄能器的切断压力水平的第二阀线圈。 当蓄能器的压力达到预定的高水位时,第二阀芯移动到连通入口与中间通道的位置。 第一线轴通常在阻止中间通道从出口端的位置,使得通过一对孔口建立流路,从而减小中间通道和入口中的压力。 减压被传递到致动室以将第二阀芯保持在上述位置,并且将泵的位移控制器驱动到泵的低待机压力位移。 当蓄能器处的压力下降到预定的低水平时,第一阀芯移动到将中间通道与出口相通的位置,排出致动室,使得第二阀芯移动到阻挡入口与中间体的位置 通道。 这增加了引导到位移控制器的压力,将泵上升到高压位移。 当压力达到预定的高水平时重复循环。

    On-demand electro-hydraulic steering system
    4.
    发明授权
    On-demand electro-hydraulic steering system 有权
    按需电动液压转向系统

    公开(公告)号:US07849956B2

    公开(公告)日:2010-12-14

    申请号:US12222768

    申请日:2008-08-15

    Abstract: A method of steering a vehicle with a hydraulic steering system is disclosed. A first control signal is sent to a pilot valve. The pilot valve is operated to direct pilot fluid to a main valve in response to the first control signal. The main valve is opened to a first position in response to the pilot fluid. Fluid is directed through the main valve to a first actuator. Resistance to actuation of the first actuator is detected. The detected resistance is compared to a threshold resistance. A second control signal is sent to the pilot valve when the detected resistance exceeds the threshold resistance. The pilot valve is operated to direct pilot fluid to the main valve in response to the second control signal. The main valve is opened to a second position in response to the pilot fluid. Fluid is directed through the main valve to the first actuator and a second actuator.

    Abstract translation: 公开了一种用液压转向系统转向车辆的方法。 第一控制信号被发送到先导阀。 操纵先导阀以响应于第一控制信号将先导流体引导到主阀。 主阀响应于先导流体而打开到第一位置。 流体通过主阀被引导到第一致动器。 检测到第一致动器的致动阻力。 将检测到的电阻与阈值电阻进行比较。 当检测到的电阻超过阈值电阻时,第二控制信号被发送到先导阀。 操纵导阀以响应于第二控制信号将先导流体引导到主阀。 主阀响应于先导流体而打开到第二位置。 流体通过主阀导向第一致动器和第二致动器。

    On-demand electro-hydraulic steering system
    5.
    发明授权
    On-demand electro-hydraulic steering system 失效
    按需电动液压转向系统

    公开(公告)号:US07434653B2

    公开(公告)日:2008-10-14

    申请号:US11094291

    申请日:2005-03-31

    Abstract: A hydraulic steering system for a work machine may include a first steering actuator having a first and a second chamber. In addition, the steering system may include a second steering actuator having a third and a fourth chamber. A multi-position directional valve may include at least one low power position and at least one high power position. The low power position may be configured to direct fluid only to the first chamber during a low power turn to extend the first steering actuator. The high power position may be configured to direct fluid to the first chamber and the third chamber during a high power turn to retract the second steering actuator.

    Abstract translation: 用于作业机械的液压转向系统可以包括具有第一和第二室的第一转向致动器。 另外,转向系统可以包括具有第三和第四室的第二转向致动器。 多位置换向阀可以包括至少一个低功率位置和至少一个高功率位置。 低功率位置可以被配置为在低功率转弯期间将流体仅引导到第一腔室以延伸第一转向致动器。 高功率位置可以被配置为在高功率转弯期间将流体引导到第一室和第三室,以使第二转向致动器缩回。

    Automotive hydraulic engine cooling system with thermostatic control by
hydraulic actuation
    6.
    发明授权
    Automotive hydraulic engine cooling system with thermostatic control by hydraulic actuation 失效
    汽车液压发动机冷却系统,具有液压驱动的恒温控制

    公开(公告)号:US5778693A

    公开(公告)日:1998-07-14

    申请号:US770832

    申请日:1996-12-20

    CPC classification number: F01P7/044

    Abstract: An engine cooling system and method and apparatus for controlling hydraulic fluid flow between a plurality of hydraulic components in a hydraulic system is shown. The system and method utilized at least one hydraulic sensor for actuating a hydraulic valve which controls the fluid delivery to the hydraulic components. At least one of the hydraulic sensors includes a thermosensitive material which causes the sensor to deliver hydraulic pressure to an actuator on the valve when the material is heated in response to an increase in temperature of, for example, a coolant associated with the engine.

    Abstract translation: 示出了用于控制液压系统中的多个液压部件之间的液压流体流动的发动机冷却系统和方法和装置。 该系统和方法使用至少一个液压传感器来致动液压阀,该液压阀控制流体输送到液压部件。 液压传感器中的至少一个包括热敏材料,当材料被加热以响应例如与发动机相关联的冷却剂的温度升高时,传感器将液压输送到阀上的致动器。

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