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    CAPACITY CONTROLLER OF VARIABLE CAPACITY HYDRAULIC PUMP
    83.
    发明公开
    CAPACITY CONTROLLER OF VARIABLE CAPACITY HYDRAULIC PUMP 失效
    变流量KAPAUITÄTSREGELUNG液压泵

    公开(公告)号：EP0781923A4

    公开(公告)日：1999-03-17

    申请号：EP95931418

    申请日：1995-09-14

    Applicant: KOMATSU MFG CO LTD

    Inventor： ODA YOSUKE ,  MORINO KENJI ,  ISHIZAKI NAOKI

    IPC: E02F9/22 ,  F04B49/00 ,  F04B49/08 ,  F15B11/00

    CPC classification number: F04B49/002 ,  F04B49/08 ,  F04B2201/1204 ,  F04B2205/08

    Abstract: A capacitor controller of a variable capacity hydraulic pump comprising a capacity control cylinder (6) including a capacity control piston (6a) for driving a capacity control member (5) of a variable capacity hydraulic pump, and a large diameter chamber (7) and a small diameter chamber (10) disposed on both sides of the capacity control piston (6a), for driving the capacity control piston (6a) in a capacity decreasing direction by a pressure oil supplied to the large diameter chamber (7) and driving the capacity control piston (6a) in a capacity increasing direction by the pressure oil supplied to the small diameter chamber (10), a passage allowing the small diameter chamber (10) to communicate with a pump exhaust path (2), at least one control valve (8, 9) for controlling the capacity of the variable capacity pump by selectively allowing the large diameter chamber (7) to communicate with the pump exhaust passage (2) or with a tank (56), and a variable throttle valve (30) disposed in a passage which allows the large diameter chamber (7) to communicate with the pump exhaust passage (2) or with the tank (56), and controlling the flow of the pressure oil supplied to, or flowing out from, the large diameter chamber (7), wherein the variable throttle valve (30) can be switched between a first state where the throttle open area is inversely proportional to the self exhaust pressure of the pump exhaust passage (2) and a second state where the throttle open area is set to a predetermined open area by an external signal irrespective of the self exhaust pressure.

    CAPACITY CONTROLLER OF VARIABLE CAPACITY HYDRAULIC PUMP
    84.
    发明公开
    CAPACITY CONTROLLER OF VARIABLE CAPACITY HYDRAULIC PUMP 失效
    KAPAUITÄTSREGELUNGFÜRHYDRAULISCHE PUMPE MITVERÄNDERLICHERFÖRDERMENGE

    公开(公告)号：EP0781923A1

    公开(公告)日：1997-07-02

    申请号：EP95931418.8

    申请日：1995-09-14

    Applicant: KOMATSU LTD.

    Inventor： ODA, Yosuke, Oyama Factory of ,  MORINO, Kenji, Oyama Factory of ,  ISHIZAKI, Naoki, Oyama Factory of

    IPC: F04B49/00 ,  F15B11/00

    CPC classification number: F04B49/002 ,  F04B49/08 ,  F04B2201/1204 ,  F04B2205/08

    Abstract: A capacitor controller of a variable capacity hydraulic pump comprising a capacity control cylinder (6) including a capacity control piston (6a) for driving a capacity control member (5) of a variable capacity hydraulic pump, and a large diameter chamber (7) and a small diameter chamber (10) disposed on both sides of the capacity control piston (6a), for driving the capacity control piston (6a) in a capacity decreasing direction by a pressure oil supplied to the large diameter chamber (7) and driving the capacity control piston (6a) in a capacity increasing direction by the pressure oil supplied to the small diameter chamber (10), a passage allowing the small diameter chamber (10) to communicate with a pump exhaust path (2), at least one control valve (8, 9) for controlling the capacity of the variable capacity pump by selectively allowing the large diameter chamber (7) to communicate with the pump exhaust passage (2) or with a tank (56), and a variable throttle valve (30) disposed in a passage which allows the large diameter chamber (7) to communicate with the pump exhaust passage (2) or with the tank (56), and controlling the flow of the pressure oil supplied to, or flowing out from, the large diameter chamber (7), wherein the variable throttle valve (30) can be switched between a first state where the throttle open area is inversely proportional to the self exhaust pressure of the pump exhaust passage (2) and a second state where the throttle open area is set to a predetermined open area by an external signal irrespective of the self exhaust pressure.

    Abstract translation: 一种可变容量液压泵的电容器控制器，包括容量控制缸（6），容量控制缸（6）包括用于驱动可变容量液压泵的容量控制构件（5）的容量控制活塞（6a）和大直径室（7），以及 设置在容量控制活塞（6a）的两侧的小直径室（10），用于通过供给到大直径室（7）的压力油沿容积减小方向驱动容量控制活塞（6a），并驱动 容量控制活塞（6a）通过供给到小直径室（10）的压力油在容积增加方向上，允许小直径室（10）与泵排气路径（2）连通的通道，至少一个控制 阀（8,9），用于通过选择性地允许大直径腔（7）与泵排气通道（2）或罐（56）连通，以及可变节流阀（30）来控制可变容量泵的容量 ） 允许大直径室（7）与泵排气通道（2）或罐（56）连通的通道，并且控制供应到大直径室的或从其流出的压力油的流动 7），其中可变节气门（30）可以在节气门开度与泵排气通道（2）的自排气压力成反比的第一状态和设定节气门开度的第二状态之间切换 通过外部信号到达预定的开放区域，而与自身排气压力无关。

    Regulator for a variable displacement pump
    86.
    发明公开
    Regulator for a variable displacement pump 失效
    Reglerfüreine Pumpe mitveränderlicherFörderleistung。

    公开(公告)号：EP0610940A1

    公开(公告)日：1994-08-17

    申请号：EP94102088.5

    申请日：1994-02-10

    Applicant: DAEWOO HEAVY INDUSTRIES Co. Ltd.

    Inventor： Kim, Young Guk ,  Kim, Tae Jong

    IPC: F04B1/30 ,  F04B1/32

    CPC classification number: F04B49/002 ,  F04B1/324 ,  F04B49/08 ,  F04B2201/1204

    Abstract: A regulator (10) for a variable displacement pump is provided with a hydraulic servo controller (11) capable of controlling the displacement volume of the pump and accomplishing a feedback function depending upon the working pressure (Pd₁) from the pump, an effective spring force and a pilot pressure (Pc).

    Abstract translation: 用于可变排量泵的调节器（10）设置有能够控制泵的排量的液压伺服控制器（11），并根据来自泵的工作压力（Pd1）实现反馈功能，有效的弹簧力 和先导压力（Pc）。

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