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    Hydraulic Control System Having Relief Flow Capture
    21.
    发明申请
    Hydraulic Control System Having Relief Flow Capture 审中-公开
    液压控制系统具有缓解流量捕获

    公开(公告)号：US20140283915A1

    公开(公告)日：2014-09-25

    申请号：US13848391

    申请日：2013-03-21

    Applicant: CATERPILLAR INC.

    Inventor： Pengfei Ma ,  Dayao Chen ,  Jiao Zhang ,  Tonglin Shang ,  Gang Wen

    IPC: F15B1/027

    CPC classification number: F15B1/027 ,  E02F9/2217 ,  E02F9/2242 ,  E02F9/2292 ,  E02F9/2296 ,  F15B1/024 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/212 ,  F15B2211/30595 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/8606 ,  F15B2211/88 ,  Y10T137/0318 ,  Y10T137/86059

    Abstract: A hydraulic circuit may be provided. The circuit may include: a pump to supply pressurized fluid to a circuit; a supply passageway coupled between the pump and the circuit; a relief flow passageway coupled between the supply passageway and a fluid reservoir; a relief flow capture circuit coupled to the relief flow passageway, the relief flow capture circuit including: a first valve configured to move from a closed position to an open position when a first pressure is detected; a second valve in fluid communication with the first valve, the second valve configured to move from a closed position to an open position when a second pressure is detected wherein the second pressure is lower than the first pressure; and an accumulator located between the first and second valves and in fluid communication with both the first and second valves, the accumulator configured to store fluid flowing through the first valve when the first pressure valve is in an open position, the accumulator further configured to outflow fluid through the second valve when the second valve is in an open position.

    Abstract translation: 可以提供液压回路。 该电路可以包括：将加压流体供应到电路的泵; 连接在泵和电路之间的供应通道; 耦合在所述供应通道和流体储存器之间的释放流动通道; 释放流捕获电路，其耦合到所述释放流通道，所述释放流捕获电路包括：构造成当检测到第一压力时从关闭位置移动到打开位置的第一阀; 与所述第一阀流体连通的第二阀，所述第二阀构造成当检测到第二压力时从关闭位置移动到打开位置，其中所述第二压力低于所述第一压力; 位于第一和第二阀之间并且与第一和第二阀两者流体连通的蓄能器，蓄能器构造成在第一压力阀处于打开位置时存储流过第一阀的流体，蓄能器进一步构造成流出 当第二阀处于打开位置时通过第二阀的流体。

    Hydraulic accumulator health monitoring and remaining life system
    23.
    发明授权
    Hydraulic accumulator health monitoring and remaining life system 有权

    公开(公告)号：US10467881B2

    公开(公告)日：2019-11-05

    申请号：US15877664

    申请日：2018-01-23

    Applicant: Caterpillar Inc.

    Inventor： Dayao Chen ,  Aleksandar Egelja ,  Kalpeshkumar N. Patel

    IPC: G01F1/36 ,  G08B21/18 ,  G01K13/02 ,  G01L19/12 ,  G01L19/00 ,  F15B20/00 ,  F15B19/00 ,  G01M15/00 ,  G01M15/08

    Abstract: A monitoring system includes a hydraulic accumulator including a piston movably disposed therein. At least one seal encompasses the piston. A first pressure sensor is configured to monitor pressure of a first fluid in a first chamber. A second pressure sensor is configured to monitor pressure of a second fluid in a second chamber. A first temperature sensor is disposed in the first chamber and configured to monitor the temperature of the first fluid. A second temperature sensor is disposed in the second chamber and configured to monitor the temperature of the second fluid. An electronic control unit is in communication with the sensors and programmed to in response to receiving pressure signals from the pressure sensors and temperature signals from the temperature sensors, determine a wear volume of the at least one seal; and compare the wear volume of the at least one seal to a predetermined threshold wear volume of the at least one seal to determine the remaining useful life of the hydraulic accumulator.

    Integration of Swing Energy Recovery and Engine Anti-Idling Systems
    27.
    发明申请
    Integration of Swing Energy Recovery and Engine Anti-Idling Systems 有权
    摆动能量回收和发动机反怠速系统的整合

    公开(公告)号：US20160281745A1

    公开(公告)日：2016-09-29

    申请号：US14668671

    申请日：2015-03-25

    Applicant: Caterpillar Inc.

    Inventor： Tonglin Shang ,  Pengfei Ma ,  Dayao Chen ,  Jeremy Peterson ,  Emily Anne Morris

    IPC: F15B1/033 ,  F15B21/14 ,  F15B13/02 ,  E02F9/22

    CPC classification number: F15B1/033 ,  E02F9/2217 ,  E02F9/2221 ,  E02F9/2242 ,  E02F9/2296 ,  F02N7/00 ,  F02N2200/10 ,  F15B1/024 ,  F15B13/02 ,  F15B21/14 ,  F15B2211/20523 ,  F15B2211/20569 ,  F15B2211/212 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6346 ,  F15B2211/6651 ,  F15B2211/7058 ,  F15B2211/851 ,  F15B2211/88

    Abstract: Engine anti-idling and restart may be implemented in a machine having a power source, a movable work tool, a pump driven by the power source, an actuator receiving fluid from the pump and moving the work tool, a high-pressure fluid reservoir, and an assist motor operatively connected to the power source. Engine restart may include detecting operator input to start the power source, and fluidly connecting the fluid reservoir to the assist motor to assist in starting the power source in response to detecting the operator input. Prior to shutting down the power source during anti-idling, fluid from the pump may be input to the assist motor, pressurized and communicated to the high-pressure fluid reservoir in response to determining that idle condition exists and a reservoir charge pressure is less than a reservoir minimum restart pressure needed to restart the power source.

    Abstract translation: 发动机反怠速和重启可以在具有动力源，可移动作业工具，由动力源驱动的泵，从泵接收流体和移动工作工具的机器，高压流体储存器， 以及可操作地连接到电源的辅助马达。 发动机重启可以包括检测操作员输入以启动动力源，以及将流体储存器流体地连接到辅助马达，以响应于检测到操作者的输入而帮助启动动力源。 在反怠速期间关闭电源之前，来自泵的流体可以被输入到辅助马达，响应于确定空转状况而存在并加压并连通到高压流体存储器并且储存器充气压力小于 重新启动电源所需的储层最小重启压力。

    Energy recovery system for hydraulic machine
    28.
    发明授权
    Energy recovery system for hydraulic machine 有权
    液压机能量回收系统

    公开(公告)号：US09290911B2

    公开(公告)日：2016-03-22

    申请号：US13770858

    申请日：2013-02-19

    Applicant: Caterpillar Inc.

    Inventor： Pengfei Ma ,  Tonglin Shang ,  Jiao Zhang ,  Dayao Chen ,  Gang Victor Wen

    IPC: F15B21/14 ,  E02F9/22 ,  F15B1/02 ,  E02F9/12

    CPC classification number: E02F9/22 ,  E02F9/123 ,  E02F9/2217 ,  E02F9/2292 ,  E02F9/2296 ,  F15B1/024 ,  F15B21/14 ,  F15B2211/20507 ,  F15B2211/20546 ,  F15B2211/212 ,  F15B2211/7058 ,  F15B2211/7135

    Abstract: An energy recovery system is disclosed for use with a hydraulic machine. The energy recovery system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and an actuator control valve movable to direct pressurized fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The energy recovery system may also have a motor mechanically connected to a rotary device and configured to selectively receive fluid discharged from the actuator, and at least one valve movable to selectively redirect fluid exiting the motor back to the actuator.

    Abstract translation: 公开了一种与液压机一起使用的能量回收系统。 能量回收系统可以具有罐，配置成从罐抽出流体并加压流体的泵，致动器和致动器控制阀，所述致动器和致动器控制阀可移动以将加压流体从泵引导到致动器，并且从致动器引导到罐， 移动执行器。 能量回收系统还可以具有机械地连接到旋转装置并被构造成选择性地接收从致动器排出的流体的电动机，以及至少一个阀，其可移动以选择性地将从马达返回的驱动器重新定向到致动器。

    HYDRAULIC CONTROL SYSTEM FOR MACHINE
    30.
    发明申请
    HYDRAULIC CONTROL SYSTEM FOR MACHINE 有权
    液压控制系统

    公开(公告)号：US20150075147A1

    公开(公告)日：2015-03-19

    申请号：US14028618

    申请日：2013-09-17

    Applicant: Caterpillar Inc.

    Inventor： Tonglin Shang ,  Dayao Chen

    IPC: E02F9/22 ,  E02F9/12 ,  E02F3/43

    CPC classification number: E02F9/123 ,  E02F3/435 ,  E02F9/2217 ,  E02F9/2235 ,  E02F9/2296 ,  F15B1/024 ,  F15B21/08 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/212 ,  F15B2211/30575 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/6658 ,  F15B2211/7058 ,  F15B2211/88

    Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system includes a pump configured to pressurize a fluid, and a swing motor selectively driven by pressurized fluid from the pump. The swing motor is configured to move a part of the machine. The hydraulic control system also includes a controller in communication with the pump. The controller is configured to receive an input indicative of a difference between a desired speed and an actual speed of the swing motor, and determine if the swing motor is accelerating, decelerating, or operating at neutral mode. The controller is configured to determine an amount of return fluid from an actuator of the machine that is available as makeup fluid for the swing motor if the swing motor is operating at neutral mode. The controller is configured to control the pump based on at least the amount of return fluid.

    Abstract translation: 公开了一种用于机器的液压控制系统。 液压控制系统包括构造成对流体加压的泵和由泵的加压流体选择性地驱动的回转马达。 摆动马达配置成移动机器的一部分。 液压控制系统还包括与泵连通的控制器。 控制器被配置为接收表示回转马达的期望速度和实际速度之间的差的输入，并且确定回转马达是否在中立模式下加速，减速或运行。 控制器被配置为确定来自机器的致动器的返回流体的量，其作为用于回转马达的补充液体，如果回转马达在中立模式下运行。 控制器被配置为至少基于返回流体的量来控制泵。

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