公开(公告)号：US10144450B1

公开(公告)日：2018-12-04

申请号：US15613684

申请日：2017-06-05

Applicant: Caterpillar Inc.

Inventor： Gang Wen ,  Travis Neale Richards ,  Matthew David Roley ,  Nathanael Garnet McRostie ,  Dwanz Mwalimu Mwasi

IPC: B62D5/30 ,  B62D5/09 ,  B62D5/06

CPC classification number: B62D5/09 ,  B62D5/062 ,  B62D5/30

Abstract: A hydraulic system is provided for a steering system of a vehicle. The hydraulic system includes a pump that supplies pressurized fluid during an operation of the steering system. The hydraulic system also includes an accumulator that is in independent and selective communication with each of the pump and the steering system. When the pump is in the operational state to support the operation of the steering system, some of the fluid may be routed into the accumulator and stored in the accumulator for later use. In the event of failure of the pump when the steering system is in operation, the accumulator provides the required amount of fluid to continue operation of the steering system until charge in the accumulator depletes to a value that is no longer sufficient to support operation of the steering system.

公开(公告)号：US09605411B2

公开(公告)日：2017-03-28

申请号：US14498310

申请日：2014-09-26

Applicant: Caterpillar Inc.

Inventor： Gang Wen ,  Moses I. Akpan ,  Steven E. Johnson

IPC: E02F9/22 ,  F15B11/16 ,  F15B13/00

CPC classification number: E02F9/2225 ,  B60T13/686 ,  B60T15/36 ,  E02F9/2203 ,  E02F9/2217 ,  E02F9/2228 ,  E02F9/226 ,  E02F9/2278 ,  F15B11/162 ,  F15B13/00 ,  F15B2211/212 ,  F15B2211/30505 ,  F15B2211/4053 ,  F15B2211/428 ,  F15B2211/7142 ,  F15B2211/781 ,  Y10T137/2574 ,  Y10T137/2605 ,  Y10T137/2663

Abstract: A hydraulic circuit includes: a priority valve including a first position and a second position where: the first position includes a first fluid passage and a fixed bypass orifice connected to the first fluid passage; the second position includes a second fluid passage and a variable bypass orifice connected to the second fluid passage. The hydraulic circuit further includes: a first fluid line fluidly connecting the priority valve and a first machine component; a second fluid line fluidly connecting the priority valve and a second machine component; a check valve placed between the priority valve and the second machine component and fluidly connecting the priority valve and the second machine component; an oil passage on the priority valve fluidly connected to one or more machine components other than the first and second machine components; one or more actuators connected to the priority valve; and a control valve communicatively connected to the one or more actuators connected to the priority valve.

公开(公告)号：US20140150415A1

公开(公告)日：2014-06-05

申请号：US13693509

申请日：2012-12-04

Applicant: CATERPILLAR INC.

Inventor： Jiao Zhang ,  Gang Wen ,  Pengfei Ma ,  Tonglin Shang ,  Dayao Chen ,  Bryan J. Hillman ,  Vickram Murugesan

IPC: F04B7/02

CPC classification number: F04B7/02 ,  F04B49/002 ,  F15B1/024 ,  F15B21/14 ,  F15B2211/20507 ,  F15B2211/212 ,  F15B2211/30565 ,  F15B2211/3058 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/7053 ,  F15B2211/88

Abstract: A method and system for accumulating and using recovered hydraulic energy that includes a hydraulic actuator and a pump configured to supply pressurized fluid to the hydraulic actuator. An energy recovery system includes a hydraulic motor, a charge valve and an accumulator configured to store fluid from the hydraulic actuator. The charge valve is operatively connected between the hydraulic actuator and the accumulator and between the accumulator and the hydraulic motor and is configured to place the hydraulic actuator in fluid communication with the accumulator and to place the accumulator in fluid communication with the hydraulic motor. A directional valve is operatively connected between the pump and the hydraulic actuator. The directional valve is configured to place the pump in fluid communication with the hydraulic actuator and to direct the flow of hydraulic fluid exiting the hydraulic actuator to the charge valve in an energy recovery mode.

Abstract translation: 一种用于累积和使用回收液压能量的方法和系统，包括液压致动器和构造成向液压致动器供应加压流体的泵。 能量回收系统包括液压马达，充气阀和蓄液器，其构造成存储来自液压致动器的流体。 充气阀可操作地连接在液压致动器和蓄能器之间以及蓄能器和液压马达之间，并被构造成使液压致动器与蓄能器流体连通并且使蓄能器与液压马达流体连通。 方向阀可操作地连接在泵和液压致动器之间。 方向阀被配置为将泵与液压致动器流体连通并且以能量回收模式将流出液压致动器的液压流体的流动引导到充气阀。

公开(公告)号：US20160090715A1

公开(公告)日：2016-03-31

申请号：US14498310

申请日：2014-09-26

Applicant: Caterpillar Inc.

Inventor： Gang Wen ,  Moses I. Akpan ,  Steven E. Johnson

IPC: E02F9/22 ,  G05D7/01

CPC classification number: E02F9/2225 ,  B60T13/686 ,  B60T15/36 ,  E02F9/2203 ,  E02F9/2217 ,  E02F9/2228 ,  E02F9/226 ,  E02F9/2278 ,  F15B11/162 ,  F15B13/00 ,  F15B2211/212 ,  F15B2211/30505 ,  F15B2211/4053 ,  F15B2211/428 ,  F15B2211/7142 ,  F15B2211/781 ,  Y10T137/2574 ,  Y10T137/2605 ,  Y10T137/2663

Abstract: A hydraulic circuit includes: a priority valve including a first position and a second position where: the first position includes a first fluid passage and a fixed bypass orifice connected to the first fluid passage; the second position includes a second fluid passage and a variable bypass orifice connected to the second fluid passage. The hydraulic circuit further includes: a first fluid line fluidly connecting the priority valve and a first machine component; a second fluid line fluidly connecting the priority valve and a second machine component; a check valve placed between the priority valve and the second machine component and fluidly connecting the priority valve and the second machine component; an oil passage on the priority valve fluidly connected to one or more machine components other than the first and second machine components; one or more actuators connected to the priority valve; and a control valve communicatively connected to the one or more actuators connected to the priority valve.

Abstract translation: 液压回路包括：优先阀，包括第一位置和第二位置，其中：第一位置包括连接到第一流体通道的第一流体通道和固定旁通孔口; 第二位置包括连接到第二流体通道的第二流体通道和可变旁路孔口。 液压回路还包括：流体连接优先阀和第一机器部件的第一流体管路; 流体连接优先阀和第二机器部件的第二流体管线; 放置在优先阀和第二机械部件之间的止回阀，并且流体地连接优先阀和第二机械部件; 优先阀上的油通道，其流体地连接到除了第一和第二机器部件之外的一个或多个机器部件; 连接到优先阀的一个或多个致动器; 以及控制阀，其通信地连接到连接到优先阀的一个或多个致动器。

公开(公告)号：US09086061B2

公开(公告)日：2015-07-21

申请号：US13693509

申请日：2012-12-04

Applicant: Caterpillar Inc.

Inventor： Jiao Zhang ,  Gang Wen ,  Pengfei Ma ,  Tonglin Shang ,  Dayao Chen ,  Bryan J. Hillman ,  Vickram Murugesan

IPC: F15B21/14 ,  F04B7/02 ,  F04B49/00 ,  F15B1/02

CPC classification number: F04B7/02 ,  F04B49/002 ,  F15B1/024 ,  F15B21/14 ,  F15B2211/20507 ,  F15B2211/212 ,  F15B2211/30565 ,  F15B2211/3058 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/7053 ,  F15B2211/88

Abstract: A method and system for accumulating and using recovered hydraulic energy that includes a hydraulic actuator and a pump configured to supply pressurized fluid to the hydraulic actuator. An energy recovery system includes a hydraulic motor, a charge valve and an accumulator configured to store fluid from the hydraulic actuator. The charge valve is operatively connected between the hydraulic actuator and the accumulator and between the accumulator and the hydraulic motor and is configured to place the hydraulic actuator in fluid communication with the accumulator and to place the accumulator in fluid communication with the hydraulic motor. A directional valve is operatively connected between the pump and the hydraulic actuator. The directional valve is configured to place the pump in fluid communication with the hydraulic actuator and to direct the flow of hydraulic fluid exiting the hydraulic actuator to the charge valve in an energy recovery mode.

Abstract translation: 一种用于累积和使用回收液压能量的方法和系统，包括液压致动器和构造成向液压致动器供应加压流体的泵。 能量回收系统包括液压马达，充气阀和蓄液器，其构造成存储来自液压致动器的流体。 充气阀可操作地连接在液压致动器和蓄能器之间以及蓄能器和液压马达之间，并被构造成使液压致动器与蓄能器流体连通并且使蓄能器与液压马达流体连通。 方向阀可操作地连接在泵和液压致动器之间。 方向阀被配置为将泵与液压致动器流体连通并且以能量回收模式将流出液压致动器的液压流体的流动引导到充气阀。

公开(公告)号：US20180346017A1

公开(公告)日：2018-12-06

申请号：US15613684

申请日：2017-06-05

Applicant: Caterpillar Inc.

Inventor： Gang Wen ,  Travis Neale Richards ,  Matthew David Roley ,  Nathanael Garnet McRostie ,  Dwanz Mwalimu Mwasi

IPC: B62D5/09 ,  B62D5/06

CPC classification number: B62D5/09 ,  B62D5/062 ,  B62D5/30

Abstract: A hydraulic system is provided for a steering system of a vehicle. The hydraulic system includes a pump that supplies pressurized fluid during an operation of the steering system. The hydraulic system also includes an accumulator that is in independent and selective communication with each of the pump and the steering system. When the pump is in the operational state to support the operation of the steering system, some of the fluid may be routed into the accumulator and stored in the accumulator for later use. In the event of failure of the pump when the steering system is in operation, the accumulator provides the required amount of fluid to continue operation of the steering system until charge in the accumulator depletes to a value that is no longer sufficient to support operation of the steering system.

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。

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。