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    Unabhängiges Dosierventil mit Strömungsbegrenzer
    41.
    发明专利
    Unabhängiges Dosierventil mit Strömungsbegrenzer 未知

    公开(公告)号：DE112011104417T5

    公开(公告)日：2013-09-12

    申请号：DE112011104417

    申请日：2011-11-29

    Applicant: CATERPILLAR INC

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

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

    Abstract: Es wird eine Anordnung mit einem unabhängigen Dosierventil (IMV) (24) offenbart, die eine Dosiereinrichtung (21) mit einem Einlass (29) enthält. Die IMV-Anordnung enthält ferner ein hydromechanisches Steuerventil (37), das mit einer Fluidquelle und dem Einlass (29) in Verbindung steht. Das Steuerventil (37) enthält ferner einen Schieber (43) mit einem geschlossenen Ende (46) und einem offenen Ende (42). Das Steuerventil (37) enthält ein Vorspannbauteil (48), das das Steuerventil (37) oder den Schieber (43) zu einer geöffneten Position vorspannt, wodurch eine Verbindung zwischen der Fluidquelle und dem Einlass (29) hergestellt wird. Das Steuerventil (37) enthält ferner eine Lastsignalleitung (45), die eine Verbindung zwischen einem Auslass (18) des Steuerventils (37) stromaufwärts von dem Einlass (29) und dem geschlossenen Ende (46) des Schiebers (43) herstellt. Ein hoher Druck in der Lastsignalleitung (45) ermöglicht dem Steuerventil (37), sich zu einer geschlossenen Position zu bewegen, wodurch die Vorspannung des Vorspannbauteils (48) überwunden wird und ein Strom zu dem Einlass (29) während einer Hochdruckbedingung verringert wird.

    42.
    发明专利
    未知

    公开(公告)号：DE112007001456T5

    公开(公告)日：2009-04-30

    申请号：DE112007001456

    申请日：2007-06-01

    Applicant: CATERPILLAR INC ,  CATERPILLAR JAPAN LTD

    Inventor： MA PENGFEI ,  KERCKHOVE PHILIPPE V ,  VONDERWELL MARK P ,  AARDEMA JAMES A

    IPC: F16K31/40

    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.

    43.
    发明专利
    未知

    公开(公告)号：DE112006002278T5

    公开(公告)日：2008-07-24

    申请号：DE112006002278

    申请日：2006-07-18

    Applicant: CATERPILLAR INC ,  CATERPILLAR MITSUBISHI LTD

    Inventor： EGELJA ALEKSANDAR ,  MA PENGFEI ,  VERKUILEN MICHAEL T ,  ZHANG JIAO

    IPC: F15B11/042 ,  F15B11/028 ,  F15B11/044 ,  F15B21/08

    Abstract: A hydraulic control system has an actuator with first and second chambers, first and second valves having elements movable to fill and drain the first and second chambers, and at least one sensor configured to generate a load signal indicative of a load on the actuator. The system has an interface device movable to generate a desired velocity signal of the actuator. The system has a controller in communication with the first and second valves, the at least one sensor, and the interface device. The controller is configured to move the element of the first valve to a position based on the desired velocity signal and to move the element of the second valve to a position based on the load signal and a desired pressure within the second chamber.

    44.
    发明专利
    未知

    公开(公告)号：DE112006001100T5

    公开(公告)日：2008-03-13

    申请号：DE112006001100

    申请日：2006-04-25

    Applicant: CATERPILLAR INC ,  CATERPILLAR MITSUBISHI LTD

    Inventor： MA PENGFEI ,  ST GERMAIN GENE R ,  ZHANG JIAO ,  EGELJA ALEKSANDAR M ,  LEHMANN ROBERT S ,  SOROKINE MICHAEL A

    IPC: F15B11/00 ,  F15B11/042 ,  F15B11/05

    Abstract: A hydraulic system having a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system also has a supply passageway and a signal passageway each disposed between the first and second valves in parallel. The hydraulic system also has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves. The hydraulic system further has a fluid passageway disposed between the supply and signal passageways to fluidly communicate the supply and signal passageways.

    45.
    发明专利
    未知

    公开(公告)号：DE102005043344A1

    公开(公告)日：2006-05-04

    申请号：DE102005043344

    申请日：2005-09-12

    Applicant: CATERPILLAR INC ,  CATERPILLAR MITSUBISHI LTD

    Inventor： MA PENGFEI ,  ZHANG JIAO

    IPC: E02F9/20 ,  F15B11/05 ,  F15B11/02 ,  F15B11/08

    Abstract: A hydraulic system for a work machine is disclosed. The hydraulic system has a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves.

    ENERGY RECOVERY SYSTEM HAVING ACCUMULATOR AND VARIABLE RELIEF
    48.
    发明申请
    ENERGY RECOVERY SYSTEM HAVING ACCUMULATOR AND VARIABLE RELIEF 审中-公开
    具有蓄能器和可变救援的能源回收系统

    公开(公告)号：WO2013003049A3

    公开(公告)日：2013-02-28

    申请号：PCT/US2012042353

    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

    IPC: F15B21/14 ,  E02F9/22 ,  F15B13/02

    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: 公开了一种用于机器（10）的摆动能量回收系统（50）。 回转能量回收系统可以具有构造成对流体加压的泵（58），由泵从加压流体流驱动的马达（49），以及能够接收从马达排出的加压流体的能量回收装置（104） 并选择性地将加压流体供应到电动机。 选择阀（120），充气阀（122）和排出阀（124）可以选择性地用于对至少一个蓄能器（108,110）进行充放电。 回转能量回收系统还可以具有与电动机相关联的减压阀（146），以及与能量回收装置和减压阀连通的控制器（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压力释放阀的设定。

    HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY
    50.
    发明申请
    HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY 审中-公开
    具有能源回收的液压控制系统

    公开(公告)号：WO2012082326A3

    公开(公告)日：2012-10-26

    申请号：PCT/US2011061777

    申请日：2011-11-22

    Applicant: CATERPILLAR INC ,  SHANG TONGLIN ,  ZHANG JIAO ,  MA PENGFEI

    Inventor： SHANG TONGLIN ,  ZHANG JIAO ,  MA PENGFEI

    IPC: F15B21/14 ,  E02F9/22 ,  F15B13/042 ,  F15B21/08

    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）可以具有罐（64），构造成从罐（64）抽取流体并对流体加压的泵（51），构造成接收加压流体并摆动 所述机器相对于起落架（39）的主体（38）和构造成接收所述加压流体并相对于所述主体移动工具（14）的工具致动器（32）。 液压控制系统（48）还可以具有被配置为将液压能转换成机械能的能量回收装置（122），配置成存储从回转马达（43）接收的废液的第一储液器（138） （130），其构造成存储从所述工具致动器接收的废液。 来自第一（138）和第二蓄能器（130）中的至少一个的储存废液可被选择性地排放到能量回收装置（122）中。

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