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公开(公告)号：US20150000756A1
公开(公告)日：2015-01-01
申请号：US14486304
申请日：2014-09-15
Applicant: Caterpillar Inc.
Inventor： Dayao Chen , Pengfei Ma , Tonglin Shang , Bryan J. Hillman
CPC classification number: F15B1/08 , F15B19/005 , F15B2201/205 , F15B2201/51 , G01M3/02 , G01N3/32 , Y10T137/0396 , Y10T137/86389
Abstract: A system including a hydraulic accumulator, a pressure sensor, a fluid source and a data processor to detect a pre-charge pressure is provided. The hydraulic accumulator includes first and second fluid chambers and a separator therebetween. The hydraulic accumulator has an associated pre-charge pressure. The pressure sensor is connected to the first fluid chamber. The data processor is connected to the pressure sensor. The data processor is configured to determine a first and second rate of pressure changes, and a transition pressure between the first and second rates. The approximate pre-charge pressure is determined based on the transition pressure.
Abstract translation: 提供一种包括液压蓄能器，压力传感器，流体源和数据处理器以检测预充气压力的系统。 液压蓄能器包括第一和第二流体室和它们之间的分离器。 液压蓄能器具有相关的预充压力。 压力传感器连接到第一流体室。 数据处理器连接到压力传感器。 数据处理器被配置为确定压力变化的第一和第二速率以及第一和第二速率之间的过渡压力。 基于过渡压力确定近似预充压力。
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公开(公告)号：US09091286B2
公开(公告)日：2015-07-28
申请号：US13718938
申请日：2012-12-18
Applicant: Caterpillar Inc.
Inventor： Rustu Cesur , Jiao Zhang , Tonglin Shang , Bryan J. Hillman , Peter Spring , Lawrence J. Tognetti , Pengfei Ma
CPC classification number: F15B21/08 , E02F9/2203 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30575 , F15B2211/30595 , F15B2211/327 , F15B2211/6306 , F15B2211/6309 , F15B2211/6346 , F15B2211/6654 , F15B2211/7135 , F15B2211/7142 , F15B2211/75 , F15B2211/86
Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank. The hydraulic control system may also have a pressure sensor to generate a first signal indicative of a pressure differential across the control valve, an operator input device to generate a second signal indicative of a desired movement of the actuator, and a controller. The controller may be configured to make a first determination of an opening amount of the control valve based on the second signal, and to make a second determination based on the first signal of whether the opening amount will result in overspeeding of the actuator. The controller may also be configured to reduce the opening amount based on the second determination.
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，致动器和配置成将流体从泵引导到致动器并且从致动器引导到罐的控制阀。 液压控制系统还可以具有压力传感器以产生指示跨越控制阀的压力差的第一信号，操作者输入装置以产生指示致动器的期望运动的第二信号和控制器。 控制器可以被配置为基于第二信号来首先确定控制阀的打开量，并且基于第一信号来确定开启量是否将导致致动器的超速。 控制器还可以被配置为基于第二确定来减少打开量。
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Patent Agency Ranking
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
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。
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公开(公告)号：US09187878B2
公开(公告)日：2015-11-17
申请号：US13714064
申请日：2012-12-13
Applicant: Caterpillar Inc.
Inventor： Tonglin Shang , Rustu Cesur , Bryan J. Hillman , Jiao Zhang
IPC: E02F9/22 , E02F9/12 , F15B11/048
CPC classification number: E02F9/2278 , E02F9/123 , E02F9/2207 , E02F9/2217 , E02F9/2296 , F15B11/048 , F15B2211/212 , F15B2211/30575 , F15B2211/327 , F15B2211/353 , F15B2211/365 , F15B2211/6306 , F15B2211/6313 , F15B2211/6336 , F15B2211/665 , F15B2211/7058 , F15B2211/853 , F15B2211/8613 , F15B2211/88
Abstract: A hydraulic control system is disclosed. The hydraulic control system may have an input device to generate a first signal indicative of a desired swing motor movement, and a control valve configured to selectively pass fluid to the swing motor and drain from the swing motor to drive the swing motor based on the first signal. The hydraulic control system may also have a pressure sensor to generate a second signal indicative of a swing motor pressure, a speed sensor configured to a third signal indicative of a swing motor speed, and a controller configured to make a comparison of at least one of the swing motor speed and the swing motor pressure with a threshold speed and a threshold pressure, and open the control valve to drain fluid from the swing motor to the tank based on the comparison when the input device is in a neutral condition.
Abstract translation: 公开了一种液压控制系统。 液压控制系统可以具有输入装置，以产生指示期望的回转马达运动的第一信号;以及控制阀，其配置成选择性地将流体传递到回转马达并从回转马达排出，以便基于第一 信号。 液压控制系统还可以具有压力传感器以产生指示回转马达压力的第二信号，被配置为指示回转马达速度的第三信号的速度传感器以及被配置为进行比较以下中的至少一个的控制器： 摆动马达速度和摆动马达压力，具有阈值速度和阈值压力，并且当输入装置处于中立状态时，基于比较，打开控制阀以将流体从摆动马达排出到油箱。
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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。
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公开(公告)号：US09388828B2
公开(公告)日：2016-07-12
申请号：US13718855
申请日：2012-12-18
Applicant: Caterpillar Inc.
Inventor： Bryan J. Hillman , Jiao Zhang , Lawrence C. Tognetti , Peter Spring , Rustu Cesur , Tonglin Shang
CPC classification number: F15B1/02 , E02F9/123 , E02F9/2217 , E02F9/2296 , F15B1/024 , F15B21/14 , F15B2211/625 , F15B2211/6306 , F15B2211/6313 , F15B2211/7058 , 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. The hydraulic control system may further have an accumulator configured to receive fluid from and supply fluid to the swing motor, a charge valve movable to allow fluid flow from the swing motor into the accumulator, and a discharge valve movable to allow fluid flow from the accumulator to the swing motor. The hydraulic control system may additionally have a controller in communication with the at least one control valve, the charge valve, and the discharge valve. The controller may be configured to detect an acceleration of the swing motor, selectively cause the discharge valve to assist the acceleration, and selectively move the charge valve to an open position to recover energy associated with pressure spikes occurring during the acceleration.
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，回转马达和至少一个控制器。 液压控制系统还可以具有一个蓄能器，其被配置为从回转马达接收流体并向其提供流体;充气阀，其可移动以允许流体从回转马达流入蓄能器;以及排出阀，其可移动以允许流体从累加器流出 到摆动马达。 液压控制系统还可以具有与至少一个控制阀，充气阀和排放阀连通的控制器。 控制器可以被配置为检测回转马达的加速度，选择性地使排放阀辅助加速，并且选择性地将充气阀移动到打开位置以恢复与在加速期间发生的压力峰值相关联的能量。
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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。
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