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    Hydraulic System Recovering Swing Kinetic and Boom Potential Energy
    12.
    发明申请
    Hydraulic System Recovering Swing Kinetic and Boom Potential Energy 有权
    液压系统恢复摆动动力和动能潜力

    公开(公告)号：US20160281330A1

    公开(公告)日：2016-09-29

    申请号：US14668678

    申请日：2015-03-25

    Applicant: Caterpillar Inc.

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

    IPC: E02F9/22 ,  E02F9/20 ,  E02F3/42 ,  E02F3/32

    CPC classification number: E02F9/2217 ,  E02F3/32 ,  E02F3/425 ,  E02F9/123 ,  E02F9/128 ,  E02F9/2004 ,  E02F9/2267 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/20507 ,  F15B2211/212 ,  F15B2211/7058 ,  F15B2211/7142 ,  F15B2211/88

    Abstract: Swing kinetic and boom potential energy may be recovered in a machine having a movable work tool, a swing motor for rotating the work tool, a hydraulic cylinder for raising and lowering the work tool, a pump selectively connected to the swing motor and the hydraulic cylinder, and a power source outputting power to drive the pump. The machine may further include a first accumulator, a swing charge valve having a charge set pressure, and a boom charge valve. The swing charge valve selectively fluidly connect the swing motor to the first accumulator, and open to fluidly connect the swing motor to the first accumulator when a swing motor fluid pressure is greater than a charge set pressure of the swing charge valve. The boom charge valve may selectively fluidly connect a head-end chamber of the hydraulic cylinder to the first accumulator when the work tool is lowered.

    Abstract translation: 在具有可移动工作工具的机器，用于旋转工作工具的回转马达，用于升高和降低作业工具的液压缸，可选择地连接到回转马达和液压缸 以及输出驱动泵的动力的电源。 机器还可以包括第一蓄能器，具有充电设定压力的摆动充气阀和吊杆充气阀。 摆动充气阀选择性地将回转马达流体地连接到第一蓄能器，并且当回转马达流体压力大于摆动充气阀的充电设定压力时，打开以将回转马达流体连接到第一累加器。 当工作工具下降时，吊杆充气阀可以选择性地将液压缸的前端室流体连接到第一蓄能器。

    Engine Assist by Recovering Swing Kinetic Energy
    13.
    发明申请
    Engine Assist by Recovering Swing Kinetic Energy 有权
    发动机辅助回转动能

    公开(公告)号：US20160281329A1

    公开(公告)日：2016-09-29

    申请号：US14668607

    申请日：2015-03-25

    Applicant: Caterpillar Inc.

    Inventor： Tonglin Shang ,  Dayao Chen ,  Pengfei Ma

    IPC: E02F9/22 ,  F15B13/06 ,  F15B11/17 ,  F15B21/14 ,  F15B11/16

    CPC classification number: E02F9/2217 ,  E02F9/123 ,  E02F9/128 ,  E02F9/2066 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/161 ,  F15B11/17 ,  F15B13/06 ,  F15B21/14 ,  F15B2211/20507 ,  F15B2211/212 ,  F15B2211/30575 ,  F15B2211/7058 ,  F15B2211/7142 ,  F15B2211/88

    Abstract: An energy recovery system for a machine having a movable work tool, a swing motor to swing the work tool about a vertical axis, a pump providing pressurized fluid to the swing motor, a power source outputting power to drive the pump, and a controller. The energy recovery system may include a first accumulator, a swing charge valve selectively connecting the swing motor to the first accumulator, an assist motor operatively connected to the power source, and a discharge selectively connecting the first accumulator to the assist motor. The swing charge valve may fluidly connect the swing motor to the first accumulator when fluid pressure from the swing motor is greater than a charge set pressure. The controller may cause the discharge valve to fluidly connect the first accumulator with the assist motor when the power demand on the power source is greater than a minimum assisted power demand.

    Abstract translation: 一种用于具有可移动工作工具的机器的能量回收系统，围绕垂直轴线摆动工作工具的回转马达，向回转马达提供加压流体的泵，输出动力来驱动泵的动力源和控制器。 能量回收系统可以包括第一蓄能器，摆动充电阀选择性地将回转电动机连接到第一蓄能器，可操作地连接到电源的辅助电动机和选择性地将第一蓄能器连接到辅助电动机的放电。 当来自回转电动机的流体压力大于充电设定压力时，摆动充气阀可以将回转马达流体地连接到第一蓄能器。 当电源的功率需求大于最小辅助功率需求时，控制器可以使排放阀将第一蓄能器与辅助电动机流体连接。

    Hydraulic control system for machine
    18.
    发明授权
    Hydraulic control system for machine 有权
    液压控制系统

    公开(公告)号：US09315968B2

    公开(公告)日：2016-04-19

    申请号：US14028618

    申请日：2013-09-17

    Applicant: Caterpillar Inc.

    Inventor： Tonglin Shang ,  Dayao Chen

    IPC: F16D31/02 ,  E02F9/12 ,  E02F3/43 ,  E02F9/22 ,  F15B21/08

    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。

    Hydraulic control system having swing motor recovery
    19.
    发明授权
    Hydraulic control system having swing motor recovery 有权
    液压控制系统具有回转马达回收

    公开(公告)号：US09086081B2

    公开(公告)日：2015-07-21

    申请号：US13718922

    申请日：2012-12-18

    Applicant: Caterpillar Inc.

    Inventor： Jiao Zhang ,  Pengfei Ma ,  Tonglin Shang ,  Rustu Cesur ,  Bryan J. Hillman ,  Peter Spring ,  Lawrence J. Tognetti ,  Randal N. Peterson ,  Dayao Chen

    IPC: F15B21/14

    CPC classification number: F15B21/14 ,  F15B1/024 ,  F15B2211/625 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/7058 ,  F15B2211/75 ,  F15B2211/755 ,  F15B2211/88

    Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, a swing motor, and at least one control valve configured to control fluid flow between the pump, the swing motor, and the tank. The hydraulic system may also have an accumulator configured to selectively receive pressurized fluid discharged from the swing motor and selectively supply pressurized fluid to the swing motor, at least one accumulator valve, and a controller. The controller may be configured to receive input indicative of a difference between desired and actual speeds of the swing motor, and determine if the swing motor is accelerating or decelerating based on the difference. The controller may also be configured to control the at least one accumulator valve to cause the accumulator to selectively receive or supply pressurized fluid only when the swing motor is accelerating or decelerating.

    Abstract translation: 公开了一种用于机器的液压控制系统。 液压控制系统可以具有罐，泵，回转马达和构造成控制泵，回转马达和罐之间的流体流动的至少一个控制阀。 液压系统还可以具有蓄能器，其被配置为选择性地接收从回转马达排出的加压流体，并且选择性地将加压流体供应到回转马达，至少一个储能阀和控制器。 控制器可以被配置为接收指示回转马达的期望速度和实际速度之间的差异的输入，并且基于该差异来确定回转马达是加速还是减速。 控制器还可以被配置成控制至少一个蓄能阀，使得蓄能器仅在回转马达正在加速或减速时有选择地接收或供应加压流体。

    Hydraulic Hybrid Boom System Hydraulic Transformer
    20.
    发明申请
    Hydraulic Hybrid Boom System Hydraulic Transformer 审中-公开
    液压混合动力系统液压变压器

    公开(公告)号：US20140325972A1

    公开(公告)日：2014-11-06

    申请号：US13886661

    申请日：2013-05-03

    Applicant: CATERPILLAR INC.

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

    IPC: E02F9/22

    CPC classification number: E02F9/2217 ,  E02F9/2292 ,  E02F9/2296 ,  F15B1/024 ,  F15B1/033 ,  F15B21/14 ,  F15B2211/20507 ,  F15B2211/20546 ,  F15B2211/212 ,  F15B2211/214 ,  F15B2211/30575 ,  F15B2211/7128 ,  F15B2211/88

    Abstract: A hydraulic system includes a hydraulic actuator, an accumulator, an accumulator charge valve, and a hydraulic transformer fluidly connected between the accumulator charge valve and the accumulator. The hydraulic transformer includes a transformer motor mechanically coupled to a transformer pump. The accumulator charge valve is fluidly connected between the transformer motor and the hydraulic actuator. The transformer pump is sized to permit a maximum flow therethrough of no more than three-quarters of a flow permitted through the transformer motor.

    Abstract translation: 液压系统包括液压致动器，蓄能器，蓄能器充气阀和流体连接在蓄能器充气阀和蓄能器之间的液压变压器。 液压变压器包括机械耦合到变压器泵的变压器电机。 蓄能器充气阀流体连接在变压器电动机和液压执行器之间。 变压器泵的尺寸允许通过其中最大流量不超过变压器电机允许的流量的四分之三。

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