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    ENERGY RECOVERY SYSTEM HAVING ACCUMULATOR AND VARIABLE RELIEF
    1.
    发明申请
    ENERGY RECOVERY SYSTEM HAVING ACCUMULATOR AND VARIABLE RELIEF 审中-公开
    具有蓄能器和可变排量的能量回收系统

    公开(公告)号：WO2013003049A2

    公开(公告)日：2013-01-03

    申请号：PCT/US2012/042353

    申请日：2012-06-14

    Applicant: CATERPILLAR INC. ,  ZHANG, Jiao ,  CHEN, Dayao ,  MA, Pengfei ,  SHANG, Tonglin ,  TOGNETTI, Lawrence ,  KUEHN, Jeffrey

    Inventor： ZHANG, Jiao ,  CHEN, Dayao ,  MA, Pengfei ,  SHANG, Tonglin ,  TOGNETTI, Lawrence ,  KUEHN, Jeffrey

    CPC classification number: E02F9/123 ,  E02F9/2217 ,  E02F9/2296 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/212 ,  F15B2211/30575 ,  F15B2211/50527 ,  F15B2211/7058 ,  F15B2211/88

    Abstract: A swing energy recovery system (50) for a machine (10) is disclosed. The swing energy recovery system may have a pump (58) configured to pressurize fluid, a motor (49) driven by a flow of pressurized fluid from the pump, and an energy recovery arrangement (104) configured to receive pressurized fluid discharged from the motor and selectively supply pressurized fluid to the motor. A selector valve (120), a charge valve (122), and a discharge valve (124) can be selectively used for charging and discharging at least one accumulator (108, 110). The swing energy recovery system may also have a pressure relief valve (146) associated with the motor, and a controller (100) in communication with the energy recovery arrangement and the pressure relief valve. The controller may be configured to selectively adjust a setting of the pressure relief valve based on an operating condition of the energy recovery arrangement.

    Abstract translation: 公开了用于机器（10）的摆动能量回收系统（50）。 摆动能量回收系统可以具有构造成对流体加压的泵（58），由来自泵的加压流体流驱动的马达（49）以及构造成接收从马达排出的加压流体的能量回收装置（104） 并选择性地向马达供应加压流体。 选择阀（120），充气阀（122）和排气阀（124）可以选择性地用于对至少一个蓄能器（108,110）进行充电和排放。 摆动能量回收系统还可以具有与马达相关联的溢流阀（146）以及与能量回收装置和溢流阀连通的控制器（100）。 控制器可以被配置为基于能量回收装置的操作条件来选择性地调节卸压阀的设置。

    HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY
    2.
    发明申请
    HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY 审中-公开
    具有能量回收的液压控制系统

    公开(公告)号：WO2012082326A2

    公开(公告)日：2012-06-21

    申请号：PCT/US2011/061777

    申请日：2011-11-22

    Applicant: CATERPILLAR INC. ,  SHANG, Tonglin ,  ZHANG, Jiao ,  MA, Pengfei

    Inventor： SHANG, Tonglin ,  ZHANG, Jiao ,  MA, Pengfei

    CPC classification number: E02F9/123 ,  E02F9/2217 ,  E02F9/2292 ,  E02F9/2296 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/50518 ,  F15B2211/625 ,  F15B2211/88

    Abstract: A hydraulic control system (48) for a machine (10) is disclosed. The hydraulic control system (48) may have a tank (64), a pump (51) configured to draw fluid from the tank (64) and pressurize the fluid, a swing motor (43) configured to receive the pressurized fluid and swing a body (38) of the machine relative to an undercarriage (39), and a tool actuator (32) configured to receive the pressurized fluid and move a tool (14) relative to the body. The hydraulic control system (48) may also have an energy recovery device (122) configured to convert hydraulic energy to mechanical energy, a first accumulator (138) configured to store waste fluid received from the swing motor (43), and a second accumulator (130) configured to store waste fluid received from the tool actuator. Stored waste fluid from at least one of the first (138) and second accumulators (130) may be selectively discharged into the energy recovery device (122).

    Abstract translation: 公开了一种用于机器（10）的液压控制系统（48）。 液压控制系统（48）可具有罐（64），配置成从罐（64）抽取流体并加压流体的泵（51），配置成接收加压流体并摆动 所述机器相对于底盘（39）的主体（38）以及工具致动器（32），所述工具致动器构造成接收所述加压流体并相对于所述主体移动工具（14）。 液压控制系统（48）还可以具有被构造成将液压能转换成机械能的能量回收装置（122），被配置为存储从摆动马达（43）接收的废弃流体的第一存储器（138），以及第二存储器 （130），其构造成存储从所述工具致动器接收的废弃流体。 来自第一储存器（138）和第二储存器（130）中的至少一个储存的废弃流体可以选择性地排放到能量回收装置（122）中。

    HYDRAULIC SYSTEM HAVING AN EXTERNAL PRESSURE COMPENSATOR
    4.
    发明申请
    HYDRAULIC SYSTEM HAVING AN EXTERNAL PRESSURE COMPENSATOR 审中-公开
    具有外压补偿器的液压系统

    公开(公告)号：WO2008150386A1

    公开(公告)日：2008-12-11

    申请号：PCT/US2008/006557

    申请日：2008-05-22

    Applicant: CATERPILLAR INC. ,  SHIN CATERPILLAR MITSUBISHI LTD. ,  MA, Pengfei ,  VANDE KERCKHOVE, Philippe, Georges ,  AARDEMA, James, A. ,  PATEL, Kalpesh

    Inventor： MA, Pengfei ,  VANDE KERCKHOVE, Philippe, Georges ,  AARDEMA, James, A. ,  PATEL, Kalpesh

    IPC: F15B11/05 ,  F15B11/044

    CPC classification number: F15B11/05 ,  E02F3/7618 ,  E02F3/844 ,  F15B11/006 ,  F15B2211/20546 ,  F15B2211/30535 ,  F15B2211/30575 ,  F15B2211/3144 ,  F15B2211/40561 ,  F15B2211/50518 ,  F15B2211/6051 ,  F15B2211/6054 ,  F15B2211/65 ,  F15B2211/7053

    Abstract: A hydraulic system (22) for a machine (10) is disclosed. The hydraulic system has a source (24) of pressurized fluid and a fluid actuator (16) with a first chamber (50). The hydraulic system also has a first valve (26) configured to selectively fluidly communicate the source with the first chamber. The first valve further includes a first element (261) movable between a flow passing, at which fluid from the source flows to the first chamber, and a flow blocking position, at which fluid from the source is blocked from the first chamber and a second element (262) configured to selectively drain a control passageway (62a) associated with the first element. The hydraulic system further has a proportional pressure compensating valve (36) configured to control a pressure of a fluid directed between the source and the first valve dependent upon the pressure of the control passageway.

    Abstract translation: 公开了一种用于机器（10）的液压系统（22）。 液压系统具有加压流体源（24）和具有第一室（50）的流体致动器（16）。 液压系统还具有构造成选择性地将源与第一室流体连通的第一阀（26）。 第一阀还包括第一元件（261），该第一元件（261）可以在流过来自源流到第一室的流体和流动阻挡位置之间移动，在该流动阻挡位置处，来自源的流体从第一腔室被阻挡，第二元件 元件（262）被配置为选择性地排出与第一元件相关联的控制通道（62a）。 液压系统还具有比例压力补偿阀（36），该比例压力补偿阀（36）被配置为根据控制通道的压力来控制引导在源和第一阀之间的流体的压力。

    POPPET VALVE
    5.
    发明申请
    POPPET VALVE 审中-公开
    POPPET阀

    公开(公告)号：WO2007149192A2

    公开(公告)日：2007-12-27

    申请号：PCT/US2007/012911

    申请日：2007-06-01

    Applicant: CATERPILLAR INC. ,  SHIN CATERPILLAR MITSUBISHI LTD. ,  MA, Pengfei ,  KERCKHOVE, Philippe, V. ,  VONDERWELL, Mark, P. ,  AARDEMA, James, A.

    Inventor： MA, Pengfei ,  KERCKHOVE, Philippe, V. ,  VONDERWELL, Mark, P. ,  AARDEMA, James, A.

    CPC classification number: F16K31/406

    Abstract: A valve has a valve body including a main chamber having a first port and a second port, and a main poppet disposed within the main chamber. The main poppet includes a first surface forming a control chamber within the main chamber. The valve has a first passage communicating the control chamber with the first port, and a second passage communicating the control chamber with the second port. The valve also includes a pilot valve having a pilot poppet for controlling fluid flow from the control chamber to the first port through a third passage, and to the second port through a fourth passage, respectively. The valve may further have a feedback spring coupled between the main poppet and the pilot poppet to provide a force relative to a distance between the main poppet and the pilot poppet.

    Abstract translation: 阀具有阀体，该阀体包括具有第一端口和第二端口的主室，以及设置在主室内的主提升阀。 主提升阀包括在主室内形成控制室的第一表面。 阀具有使控制室与第一端口连通的第一通道和将控制室与第二端口连通的第二通道。 该阀还包括一个先导阀，它具有一个先导提升阀，用于控制通过第三个通道从控制室流向第一个端口的流体，并分别通过第四个通道传递到第二个通道。 阀可以进一步具有联接在主提升阀和先导提升阀之间的反馈弹簧，以提供相对于主提升阀和先导提升阀之间的距离的力。

    HYDRAULIC CONTROL SYSTEM HAVING SWING MOTOR ENERGY RECOVERY
    6.
    发明申请
    HYDRAULIC CONTROL SYSTEM HAVING SWING MOTOR ENERGY RECOVERY 审中-公开
    具有电动机能量回收的液压控制系统

    公开(公告)号：WO2013003047A2

    公开(公告)日：2013-01-03

    申请号：PCT/US2012/042350

    申请日：2012-06-14

    Applicant: CATERPILLAR INC. ,  ZHANG, Jiao ,  SHANG, Tonglin ,  SPRING, Peter ,  MA, Pengfei ,  PETERSON, Randal

    Inventor： ZHANG, Jiao ,  SHANG, Tonglin ,  SPRING, Peter ,  MA, Pengfei ,  PETERSON, Randal

    CPC classification number: E02F9/2217 ,  E02F9/123 ,  E02F9/2037 ,  E02F9/2296 ,  F15B1/02 ,  F15B21/14 ,  F15B2211/212 ,  F15B2211/30575 ,  F15B2211/50527 ,  F15B2211/613 ,  F15B2211/7058 ,  F15B2211/88

    Abstract: A hydraulic control system (50) for a machine (10) is disclosed. The hydraulic control system may have a work tool (16) movable through segments of an excavation cycle, a motor (49) configured to swing the work tool during the excavation cycle, at least one accumulator (108, 110) configured to selectively receive fluid discharged from the motor and to discharge fluid to the motor during the excavation cycle, and a controller (100). The controller may be configured to receive input regarding a current excavation cycle of the work tool, and make a determination based on the input that the current excavation cycle is associated with one of a set of known modes of operation. The controller may be further configured to cause the at least one accumulator to receive fluid and discharge fluid during different segments of the excavation cycle based on the determination.

    Abstract translation: 公开了一种用于机器（10）的液压控制系统（50）。 液压控制系统可以具有可移动通过挖掘循环的段的作业工具（16），构造成在挖掘循环期间摆动作业工具的马达（49），配置成有选择地接收流体的至少一个储液器（108,110） 在开挖循环期间从马达排出并将流体排放到马达，以及控制器（100）。 控制器可以被配置为接收关于工作工具的当前挖掘周期的输入，并且基于输入来确定当前挖掘循环与一组已知操作模式中的一个相关联。 控制器还可以被构造成基于该确定，使至少一个蓄能器在挖掘周期的不同段期间接收流体并排出流体。

    INDEPENDENT METERING VALVE WITH FLOW LIMITER
    8.
    发明申请
    INDEPENDENT METERING VALVE WITH FLOW LIMITER 审中-公开
    带限流器的独立计量阀

    公开(公告)号：WO2012082354A2

    公开(公告)日：2012-06-21

    申请号：PCT/US2011062357

    申请日：2011-11-29

    Applicant: CATERPILLAR INC ,  FERRAZ JOHN ,  EGELJA ALEKSANDAR ,  MA PENGFEI ,  BESCHORNER MATTHEW

    Inventor： FERRAZ JOHN ,  EGELJA ALEKSANDAR ,  MA PENGFEI ,  BESCHORNER MATTHEW

    IPC: F15B13/02 ,  E02F9/22 ,  F16K31/12

    CPC classification number: F15B11/05 ,  F15B2211/20523 ,  F15B2211/30575 ,  F15B2211/40561 ,  F15B2211/5059 ,  F15B2211/7053 ,  Y10T137/0379 ,  Y10T137/7761

    Abstract: An independent metering valve (24) (IMV) assembly is disclosed that includes a metering stem (21) including an inlet (29). The IMV assembly also includes a hydro-mechanical control valve (37) in communication with a fluid source and the inlet (29). The control valve (37) also including a spool (43) with a closed end (46) and an open end (42). The control valve (37) includes a biasing member (48) that biases the control valve (37) or spool (43) towards an open position thereby establishing communication between the fluid source and the inlet (29). The control valve (37) also including a load signal line (45) providing communication between an outlet (18) of the control valve (37) upstream of the inlet (29) and the closed end (46) of the spool (43). Wherein high pressure in the load signal line (45) allowing the control valve (37) to move towards a closed position thereby overcoming bias of the biasing member (48) and reducing flow to the inlet (29) during a high pressure condition.

    Abstract translation: 公开了一种独立的计量阀（24）（IMV）组件，其包括具有入口（29）的计量杆（21）。 IMV组件还包括与流体源和入口（29）连通的液压机械控制阀（37）。 控制阀（37）还包括具有封闭端（46）和开口端（42）的阀芯（43）。 控制阀（37）包括偏压构件（48），该偏压构件将控制阀（37）或阀芯（43）偏压向打开位置，从而在流体源和入口（29）之间建立连通。 控制阀37还包括在入口29上游的控制阀37的出口18与阀芯43的封闭端46之间提供连通的负载信号管线45， 。 其中负载信号线（45）中的高压允许控制阀（37）朝向关闭位置移动，从而克服偏置构件（48）的偏置并在高压状态期间减少流向入口（29）的流量。

    BIDIRECTIONAL FORCE FEEDBACK POPPET VALVE
    9.
    发明申请
    BIDIRECTIONAL FORCE FEEDBACK POPPET VALVE 审中-公开
    双向力反馈POPPET阀

    公开(公告)号：WO2007149197A1

    公开(公告)日：2007-12-27

    申请号：PCT/US2007/012988

    申请日：2007-06-01

    Applicant: CATERPILLAR INC. ,  SHIN CATERPILLAR MITSUBISHI LTD. ,  MA, Pengfei ,  KERCKHOVE, Philippe, V. ,  AARDEMA, James, A.

    Inventor： MA, Pengfei ,  KERCKHOVE, Philippe, V. ,  AARDEMA, James, A.

    IPC: F16K31/40 ,  F16K31/42

    CPC classification number: F16K31/406

    Abstract: A valve has a valve body ( 12) including a main chamber (14) having a first port (16) and a second port (18), and a main poppet (20) disposed within the main chamber. The main poppet includes a first surface (28) forming a control chamber (30) within the main chamber. The valve has a first passage (40) communicating the control chamber with the first port, and a second passage (50) communicating the control chamber with the second port. The valve also includes a pilot valve (80) having a pilot poppet (82) for controlling fluid flow from the control chamber to the first port through a third passage (96), and to the second port through a fourth passage (102), respectively. The valve may further have a feedback spring (90) coupled between the main poppet and the pilot poppet to provide a force relative to a distance between the main poppet and the pilot poppet.

    Abstract translation: 阀具有包括具有第一端口（16）和第二端口（18）的主室（14）的阀体（12）和设置在主室内的主提升阀（20）。 主提升阀包括在主室内形成控制室（30）的第一表面（28）。 阀具有使控制室与第一端口连通的第一通道（40）和将控制室与第二端口连通的第二通道（50）。 该阀还包括一个先导阀（80），其具有用于控制通过第三通道（96）从控制室流向第一端口的流体的先导提升阀（82），并通过第四通道（102）到达第二端口， 分别。 阀还可以具有联接在主提升阀和先导提升阀之间的反馈弹簧（90），以提供相对于主提升阀和先导提升阀之间的距离的力。

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