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公开(公告)号：US20150247513A1
公开(公告)日：2015-09-03
申请号：US14482557
申请日：2014-09-10
Applicant: Caterpillar Inc.
Inventor： Emily Anne Morris , Jeremy Todd Peterson , Jeffrey Lee Kuehn , Dayao Chen , Pengfei Ma
CPC classification number: F02N7/08 , B60K2006/126 , E02F9/2066 , E02F9/2217 , E02F9/2246 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F02N11/00 , F02N2300/2002 , F15B2211/212 , F15B2211/851
Abstract: A hydraulic system is disclosed for assisting starting of a machine having an engine. The hydraulic system may include a work tool, a pump driven by the engine to pressurize fluid, and an actuator configured to receive pressurized fluid from the pump and move the work tool. The hydraulic system may also include an accumulator configured to selectively receive pressurized fluid from the pump and from the actuator, an electric starter configured to start the engine, and a motor selectively supplied with fluid from the accumulator to assist the electric starter in starting the engine.
Abstract translation: 公开了一种用于辅助起动具有发动机的机器的液压系统。 液压系统可以包括工作工具，由发动机驱动以对流体加压的泵以及被配置为从泵接收加压流体并移动作业工具的致动器。 液压系统还可以包括蓄能器，其构造成选择性地接收来自泵和来自致动器的加压流体，构造成启动发动机的电启动器，以及选择性地从蓄能器供应流体的马达，以辅助电启动器启动发动机 。
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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：US20140174065A1
公开(公告)日：2014-06-26
申请号：US13723443
申请日：2012-12-21
Applicant: CATERPILLAR INC.
Inventor： Pengfei Ma
IPC: F15B13/02
CPC classification number: F15B21/14 , E02F9/123 , E02F9/2217 , E02F9/2296 , F15B1/024 , F15B1/033 , F15B2211/20546 , F15B2211/212 , F15B2211/41527 , F15B2211/426 , F15B2211/6313 , F15B2211/7058 , F15B2211/761 , F15B2211/853
Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system includes a swing control valve coupled between the swing motor, the pump and the tank to selectively control a fluid flow between the pump and the swing motor. The hydraulic control system includes a first conduit coupled between a first port of the swing control valve and a first chamber port of the swing motor. Further, a second conduit is coupled between a second port of the swing control valve and a second chamber port of the swing motor. A first chamber valve and a second chamber valve coupled to the first conduit and the second conduit. A controller is configured to selectively move one of the first and second chamber valves to reduce the fluid flow between the swing motor and the tank such that the pressurized flow discharged from the swing motor is directed to an accumulator fluidly coupled to each of the first and second conduits.
Abstract translation: 公开了一种用于机器的液压控制系统。 液压控制系统包括一个回转控制阀，该回转控制阀连接在回转马达，泵和油箱之间，以选择性地控制泵和回转马达之间的流体流动。 液压控制系统包括耦合在回转控制阀的第一端口和回转马达的第一腔室端口之间的第一管道。 此外，第二导管联接在回转控制阀的第二端口和回转马达的第二室端口之间。 耦合到第一导管和第二导管的第一室阀和第二室阀。 控制器被配置为选择性地移动第一和第二室阀中的一个以减少回转马达和储罐之间的流体流动，使得从回转马达排出的加压流被引导到流体耦合到第一和第二室 第二条管道
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公开(公告)号：US10337532B2
公开(公告)日：2019-07-02
申请号：US15367675
申请日：2016-12-02
Applicant: Caterpillar Inc.
Inventor： Pengfei Ma , Aleksandar Egelja , Justin Speichinger , Shuhei Orimoto , Tetsuya Yoshino , Hideki Nakajima , Shogo Tada , Aleem Junaidi , Bryan Johnson , Matthew Beschorner
IPC: F15B13/04 , F15B11/08 , F15B13/02 , F15B21/14 , F15B1/26 , F15B13/044 , F15B11/00 , F15B11/024
Abstract: A hydraulic system is disclosed. The hydraulic system may include a source of pressurized fluid; a tank; a hydraulic actuator including a first chamber and a second chamber; a first independent metering valve disposed between and fluidly connected to the source, the tank, and the first chamber of the hydraulic actuator; and a second independent metering valve disposed between and fluidly connected to the source, the tank, and the second chamber of the hydraulic actuator. Each of the first independent metering valve and the second independent metering valve may include a spool and a valve actuator disposed on one side of the spool. The valve actuator may include a push coil, a pull coil, and a force feedback mechanism configured to balance a force of the push coil and the pull coil.
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公开(公告)号：US09951795B2
公开(公告)日：2018-04-24
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
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.
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Patent Agency Ranking
公开(公告)号：US09618014B2
公开(公告)日：2017-04-11
申请号：US14263710
申请日：2014-04-28
Applicant: Caterpillar Inc.
Inventor： Emily Anne Morris , Jeremy Todd Peterson , Jeffrey Lee Kuehn , Dayao Chen , Pengfei Ma
IPC: F16D31/02 , F15B1/02 , F04B35/00 , E02F3/42 , E02F9/22 , F02N7/08 , F15B21/14 , F02N11/00 , F04B17/05 , B60K6/12
CPC classification number: F15B1/024 , B60K2006/126 , E02F3/425 , E02F9/2217 , F02N7/08 , F02N11/00 , F02N2300/2002 , F04B17/05 , F04B35/002 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/212 , F15B2211/7053 , F15B2211/7058 , F15B2211/7135 , F15B2211/851 , F15B2211/853
Abstract: An implement system is disclosed for use with a machine having an engine. The implement system may have a pump driven by the engine, a first actuator configured to receive pressurized fluid from the pump during operation of the engine, and at least a second actuator configure to receive pressurized fluid from the pump during operation of the engine. The implement system may also have an accumulator configured to receive pressurized fluid from the first actuator during operation of the engine, and to discharge fluid to the first actuator and to the at least a second actuator when the engine is shut down.
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公开(公告)号：US09328744B2
公开(公告)日：2016-05-03
申请号：US13718907
申请日：2012-12-18
Applicant: Caterpillar Inc.
Inventor： Rustu Cesur , Lawrence J. Tognetti , Pengfei Ma , Jiao Zhang , Tonglin Shang
CPC classification number: F15B1/033 , F15B1/024 , F15B13/04 , F15B21/082 , F15B21/14 , F15B2211/20546 , F15B2211/212 , F15B2211/6306 , F15B2211/6313 , F15B2211/6336 , F15B2211/665 , F15B2211/6652 , F15B2211/6658 , F15B2211/7058 , F15B2211/8603 , F15B2211/8752 , F15B2211/88
Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump, and a fluid actuator. The hydraulic control system may further have an accumulator configured to selectively receive pressurized fluid discharged from the fluid actuator and selectively supply pressurized fluid to the fluid actuator. The hydraulic control system may also have a pressure sensor configured to generate a signal indicative of a pressure of the accumulator, a charge valve, a discharge valve, and a controller in communication with the control valve, the charge valve, and the discharge valve. The controller may be configured to detect stall of the fluid actuator, to make a comparison of the pressure of the accumulator with a threshold pressure, and to selectively move the charge valve to charge the accumulator or move the discharge valve to discharge the accumulator during the stall based on the comparison.
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，泵和流体致动器。 液压控制系统还可以具有蓄能器，该蓄能器构造成选择性地接收从流体致动器排出的加压流体并且选择性地将加压流体供应到流体致动器。 液压控制系统还可以具有压力传感器，该压力传感器被配置为产生指示蓄能器，充气阀，排放阀和与控制阀，充气阀和排出阀连通的控制器的压力的信号。 控制器可以被配置为检测流体致动器的失速，以使蓄能器的压力与阈值压力进行比较，并且选择性地移动充气阀以对蓄能器充电或移动排放阀以在蓄能器期间释放蓄能器 摊位基于比较。
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公开(公告)号：US09261118B2
公开(公告)日：2016-02-16
申请号：US14155587
申请日：2014-01-15
Applicant: Caterpillar, Inc.
Inventor： Jiao Zhang , Pengfei Ma , Vickram Murugesan , Tonglin Shang , Bryan Jacob Hillman
CPC classification number: F15B21/14 , E02F9/2228 , E02F9/2296 , F15B11/006 , F15B11/024 , F15B2211/30535 , F15B2211/30575 , F15B2211/6309 , F15B2211/6313 , F15B2211/7053 , F15B2211/761
Abstract: A hydraulic system and methods for conserving energy in such system is disclosed. The hydraulic system includes a hydraulic actuator having a head end, a rod end and a piston disposed therebetween. The system also includes a pump that pumps fluid to the actuator, a first valve disposed downstream of the rod end, and a second valve disposed between the pump and the head end of the actuator. When the system is in a load overrunning condition, the second valve is partially closed to restrict the flow of a combined fluid. The combined fluid including fluid received from the pump and fluid received from the rod end of the actuator. When the system is in the light resistive load condition, the second valve is open to allow the combined fluid to flow through the second valve.
Abstract translation: 公开了一种在这种系统中节约能量的液压系统和方法。 液压系统包括具有头端，杆端和设置在其间的活塞的液压致动器。 该系统还包括将流体泵送到致动器的泵，设置在杆端下游的第一阀，以及设置在泵和致动器的头端之间的第二阀。 当系统处于负载超限状态时，第二阀部分关闭以限制组合流体的流动。 包括从泵接收的流体和从致动器的杆端接收的流体的组合流体。 当系统处于轻负载状态时，第二阀打开以允许组合的流体流过第二阀。
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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：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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