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    Power management control system for a hydraulic work machine
    1.
    发明授权
    Power management control system for a hydraulic work machine 失效
    液压作业机电源管理控制系统

    公开(公告)号：US5967756A

    公开(公告)日：1999-10-19

    申请号：US886727

    申请日：1997-07-01

    Applicant: Lonnie J. Devier ,  Stephen V. Lunzman

    Inventor： Lonnie J. Devier ,  Stephen V. Lunzman

    IPC: F02D29/04 ,  F04B49/06 ,  F04B49/20 ,  F04B49/00

    CPC classification number: F04B49/20 ,  E02F9/2296 ,  F02D29/04 ,  F04B49/06 ,  F04B2201/1204 ,  F04B2203/0603 ,  F04B2203/0605 ,  F04B2207/041 ,  F04B2207/044

    Abstract: An apparatus for controlling an electrohydraulic system of a work machine having an engine that drives a variable displacement pump is disclosed. A pump displacement setting device produces a pump command signal indicative of a desired displacement of the variable displacement pump. An engine speed setting device produces an engine command signal indicative of a desired rotational speed of the engine. A power manager receives the pump and engine command signals, determines an efficient engine speed and pump displacement, and produces an engine control signal that decreases the engine speed to the efficient engine speed and a pump control signal that increases the pump displacement to an efficient pump displacement, while maintaining a substantially constant pump flow rate.

    Abstract translation: 公开了一种用于控制具有驱动变排量泵的发动机的作业机械的电动液压系统的装置。 泵位移设定装置产生指示可变排量泵的期望位移的泵指令信号。 发动机转速设定装置产生指示发动机的期望转速的发动机指令信号。 功率管理器接收泵和发动机指令信号，确定有效的发动机转速和泵排量，并且产生将发动机转速降低到有效的发动机转速的发动机控制信号以及将泵排量增加到高效泵的泵控制信号 同时保持基本恒定的泵流量。

    Control device for variable hydraulic machines
    2.
    发明授权
    Control device for variable hydraulic machines 失效
    可变液压机控制装置

    公开(公告)号：US5881629A

    公开(公告)日：1999-03-16

    申请号：US808236

    申请日：1997-02-28

    Applicant: Wilhelm Gollner ,  Eckhard Skirde

    Inventor： Wilhelm Gollner ,  Eckhard Skirde

    IPC: F04B49/00 ,  F04B49/08 ,  F16H61/42 ,  F16H61/435 ,  F16H61/46 ,  F01B3/10

    CPC classification number: F16H61/435 ,  F04B49/002 ,  F04B49/08 ,  F16H61/46 ,  F04B2201/1204 ,  F04B2201/12041 ,  F04B2201/1205 ,  F04B2201/12051 ,  F04B2203/1201 ,  F16H2059/6853

    Abstract: A control device for variable hydraulic machines, and specifically for variable axial piston machines equipped with a servo system that is connected to a swash plate so that the discharge/displacement volume is infinitely variable. The hydraulic machine is equipped with a sensor that detects the piston displacement and is connected with an electronical control unit that controls the swash angle position of the swash plate and is pressure controlling the servo system by an electrohydraulic converter. A method for the infinite controlling of the volume flow of hydraulic machines, by which the servo system is connected to the swash plate of the hydraulic machine, and by which a conduction of a signal from a sensor to the control unit, a pressure controlling of the servo system by an electrohydraulic converter as well as the controlling of the swash angle position of the swash plate by the electronical control unit is realized.

    Abstract translation: 一种用于可变液压机的控制装置，特别是用于可变轴向活塞机，其配备有连接到斜盘的伺服系统，使得排放/排出体积是无限可变的。 液压机配备有检测活塞位移的传感器，并且与控制斜盘的斜角位置的电子控制单元连接，并通过电动液压转换器对伺服系统进行压力控制。 一种用于无限制地控制液压机的体积流量的方法，通过该方法伺服系统连接到液压机的斜盘，并且通过该方法将传感器的信号传导到控制单元，压力控制 通过电动液压转换器的伺服系统以及通过电子控制单元控制斜盘的斜角位置被实现。

    Capacity control apparatus for a variable capacity hydraulic pump
    3.
    发明授权
    Capacity control apparatus for a variable capacity hydraulic pump 失效
    用于变容量液压泵的容量控制装置

    公开(公告)号：US5839885A

    公开(公告)日：1998-11-24

    申请号：US776526

    申请日：1997-02-27

    Applicant: Yosuke Oda ,  Kenji Morino ,  Naoki Ishizaki

    Inventor： Yosuke Oda ,  Kenji Morino ,  Naoki Ishizaki

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

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

    Abstract: A capacity control apparatus for a variable capacity hydraulic pump including: a capacity control cylinder having a capacity control piston for driving a capacity control member of the hydraulic pump, with a large diameter chamber and a small diameter chamber disposed at both sides of the capacity control piston, and driving the capacity control piston with a pressure fluid that is supplied into the larger diameter chamber, in a direction in which the capacity of the hydraulic pump may be reduced and for driving the capacity control piston with a pressure fluid that is supplied into the small diameter chamber, in a direction in which the capacity may be increased; a passage for the small diameter chamber to communicate with a pump discharge path; at least one control valve for controlling the capacity of the hydraulic pump by selectively communicating the large diameter chamber with either a pump pressure discharge path and a reservoir; and a variable throttle valve in a passage with the at least one control valve, in which the variable throttle valve is switched into a first state in which a throttled area of aperture in inverse proportion to a self discharge pressure of the pump discharge path is established and into a second state in which a predetermined throttled area of aperture that is independent of the self discharge pressure is established in response to an external signal.

    Abstract translation: PCT No.PCT / JP95 / 01839 Sec。 371日期1997年2月27日 102（e）日期1997年2月27日PCT提交1995年9月14日PCT公布。 出版物WO96 / 08652 日本特开1996年3月21日用于变容量液压泵的容量控制装置包括：容量控制缸，具有用于驱动液压泵的容量控制构件的容量控制活塞，具有设置在两者上的大直径室和小直径室 容量控制活塞的侧面，并且利用供给到较大直径室的压力流体沿液压泵的容积减小的方向驱动容量控制活塞，并且以压力驱动容量控制活塞 在容量可以增加的方向上供给到小直径室中的流体; 用于小直径室的通道与泵排出路径连通; 至少一个控制阀，用于通过选择性地将所述大直径室与泵压力排放路径和储存器连通来控制所述液压泵的容量; 以及具有至少一个控制阀的通道中的可变节流阀，其中可变节流阀被切换到第一状态，其中与泵排出路径的自排气压力成反比的开口的节流区域成立 并且进入第二状态，其中响应于外部信号建立独立于自排气压力的预定节流孔径区域。

    Hydraulic system for driving axial piston type hydraulic motor
    4.
    发明授权
    Hydraulic system for driving axial piston type hydraulic motor 失效
    液压系统用于驱动轴向活塞式液压马达

    公开(公告)号：US5836160A

    公开(公告)日：1998-11-17

    申请号：US762917

    申请日：1996-12-10

    Applicant: Sung Kyo Chang

    Inventor： Sung Kyo Chang

    IPC: F03C1/06 ,  F03C1/40 ,  F04B49/00 ,  F15B11/02 ,  F15B11/04 ,  F16D39/00

    CPC classification number: F03C1/0686 ,  F04B49/002 ,  F15B11/04 ,  F04B2201/1204 ,  F04B2203/1202 ,  F15B2211/20538 ,  F15B2211/30505 ,  F15B2211/355 ,  F15B2211/40515 ,  F15B2211/455 ,  F15B2211/50518 ,  F15B2211/5153 ,  F15B2211/5154 ,  F15B2211/55 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/7107 ,  F15B2211/76

    Abstract: A hydraulic system for driving an axial piston type hydraulic motor wherein a swash plate can tilt at a right angle relative to a shaft. The hydraulic system comprises a swash plate cylinder; a double-acting swash plate piston disposed in the swash plate cylinder; one rod end of which is connected to the swash plate; a pair of springs disposed in the swash plate cylinder for biasing the swash plate piston; a swash plate piston control valve for selectively connecting one of the swash plate piston chambers to a hydraulic pump or, alternatively, for interconnecting the chambers of the swash plate piston; an inlet passage installed between an inlet port of the hydraulic motor and a hydraulic pump; an outlet passage installed between an outlet port of the hydraulic motor and a tank; a main control valve installed in the inlet passage for opening or closing the inlet passage in response to a predetermined signal; a passage switching valve installed in the outlet passage for opening or closing the outlet passage in response to a predetermined signal; a bypass passage installed in the outlet passage wherein each end of the bypass passage is connected to a predetermined position before and after the passage switching valve; and a relief valve installed in the bypass passage.

    Abstract translation: 一种用于驱动轴向活塞式液压马达的液压系统，其中斜盘可相对于轴线成直角倾斜。 液压系统包括斜盘缸; 设置在斜盘滚筒中的双作用斜盘活塞; 一个杆端连接到斜盘; 一对弹簧，其设置在所述斜盘缸中，用于偏压所述斜盘活塞; 斜盘活塞控制阀，用于将斜盘活塞室中的一个选择性地连接到液压泵，或者可选地将所述斜盘活塞的室互连; 安装在液压马达的入口与液压泵之间的入口通道; 安装在液压马达的出口与油箱之间的出口通道; 安装在入口通道中的主控制阀，用于响应于预定信号打开或关闭入口通道; 安装在出口通道中的通道切换阀，用于响应于预定信号打开或关闭出口通道; 旁通通道，其安装在出口通道中，旁通通道的每个端部连接到通道切换阀前后的预定位置; 以及安装在旁通通道中的安全阀。

    Hydraulic control valve block
    5.
    发明授权
    Hydraulic control valve block 失效
    液压控制阀块

    公开(公告)号：US5778924A

    公开(公告)日：1998-07-14

    申请号：US605009

    申请日：1996-04-26

    Applicant: Helmut Stangl ,  Gerhard Beutler

    Inventor： Helmut Stangl ,  Gerhard Beutler

    IPC: F15B13/042 ,  F04B49/08 ,  F15B11/00 ,  F15B13/02

    CPC classification number: F04B49/08 ,  F04B2201/1204 ,  F04B2205/08 ,  Y10T137/5109 ,  Y10T137/86614

    Abstract: The invention relates to a hydraulic control valve block in standard configuration having a first control valve (2) and a second control valve (3), functionally cooperating with the first control valve and connected therewith via pressure medium channels (28-31, 33), having a valve piston (5) which is controlled on the one hand by a hydraulic control pressure in a pressure chamber (25) and on the other hand is acted upon by a spring pressure part (7). In order to reduce the construction and installation costs of the control valve block, whilst employing a remotely controllable seat valve, and maintaining its functions, it is provided in accordance with the invention that a supplementary pressure medium channel (36) is formed in the control valve block and that the spring pressure part (7) of the second control valve (3) is replaced by an electrically controllable seat valve (60.1; 60.2) having an electromechanical control part (66.1; 66.2) and at least two hydraulic connections (63.1; 64.1) as valve inlet (63) and valve outlet (64.1; 64.2), and in that the valve piston (5) of the second control valve (3) is deactivated and therewith, at the same time, one (64.1; 64.2) of the two hydraulic connections (63, 64.1; 64.2) of the seat valve (60.1; 60.2) is connected to a hydraulic connection (T) already present and the other hydraulic connection (63) is connected to the supplementary pressure medium channel (36).

    Abstract translation: PCT No.PCT / EP94 / 02857 Sec。 371日期：1996年4月26日 102（e）日期1996年4月26日PCT 1994年8月29日PCT PCT。 公开号WO95 / 06818 日期：1995年3月9日本发明涉及具有第一控制阀（2）和第二控制阀（3）的标准结构的液压控制阀块，其功能上与第一控制阀配合并通过压力介质通道（28 -31,33），其具有一个通过压力室（25）中的液压控制压力控制的阀活塞（5），另一方面由弹簧压力部件（7）作用。 为了减少控制阀块的结构和安装成本，同时采用可遥控的座阀，并保持其功能，根据本发明提供了一种辅助压力介质通道（36）形成在控制器 并且第二控制阀（3）的弹簧压力部分（7）由具有机电控制部分（66.1; 66.2）和至少两个液压连接（63.1）的电控座阀（60.1; 60.2）代替 ; 64.1）作为阀入口（63）和阀出口（64.1; 64.2），并且第二控制阀（3）的阀活塞（5）停用，同时，一个（64.1; 64.2 座阀（60.1; 60.2）的两个液压连接件（63,64.1; 64.2）连接到已经存在的液压连接件（T），而另一液压连接件（63）连接到辅助压力介质通道 36）。

    Closed loop sludge flow control system
    7.
    发明授权
    Closed loop sludge flow control system 失效
    闭环污泥流量控制系统

    公开(公告)号：US5336055A

    公开(公告)日：1994-08-09

    申请号：US113841

    申请日：1993-08-30

    Applicant: Thomas M. Anderson

    Inventor： Thomas M. Anderson

    IPC: F04B15/02 ,  F04B49/06 ,  G01F11/02 ,  F04B35/02

    CPC classification number: G01F11/029 ,  F04B15/02 ,  F04B49/065 ,  F04B2201/0201 ,  F04B2201/0202 ,  F04B2201/0209 ,  F04B2201/06012 ,  F04B2201/1204 ,  F04B2203/0902 ,  F04B2205/05 ,  Y10S417/90

    Abstract: A system and method for controlling operation of a sludge material handling system is disclosed. The sludge material handling system includes a positive displacement piston/cylinder pump, a sludge material feed system which delivers sludge material to the pump, and a sludge material disposal system which receives and disposes of sludge material from the pump. A first parameter is sensed, the first parameter bearing a known relationship to an actual volume of sludge material delivered during a pumping cycle. An output value is determined from the first parameter. A control signal is provided as a function of the output value.

    Abstract translation: 公开了一种用于控制污泥物料处理系统的操作的系统和方法。 污泥处理系统包括容积式活塞/气缸泵，将污泥材料输送到泵的污泥原料供给系统以及从泵接收和处理污泥物料的污泥物料处理系统。 感测到第一参数，第一参数与在泵送循环期间输送的污泥物料的实际体积具有已知关系。 根据第一个参数确定输出值。 作为输出值的函数提供控制信号。

    Hydraulic controller
    9.
    发明授权
    Hydraulic controller 失效
    液压控制器

    公开(公告)号：US4091617A

    公开(公告)日：1978-05-30

    申请号：US795689

    申请日：1977-05-11

    Applicant: Charles R. Cornell

    Inventor： Charles R. Cornell

    IPC: F04B49/06 ,  F16H61/42 ,  F16H61/46 ,  F16H61/475 ,  F16H39/46

    CPC classification number: F16H61/475 ,  F04B49/06 ,  F16H61/46 ,  F04B2201/1204 ,  F04B2205/08 ,  F16H61/433 ,  Y10S60/911

    Abstract: An electro-hydraulic control for a hydrostatic transmission including a variable displacement hydraulic pump and fluid operable servos to vary the displacement of the pump. The electro-hydraulic control is in series between the charge pump and the standard manual controller and determines the maximum pressure of the charge fluid ported to the standard controller. The electro-hydraulic control includes a spool biased toward a first position to port fluid from the charge pump to the standard controller, and biased toward a second position to relieve to tank the pressure of fluid ported to the manual controller. The biasing toward the second direction is accomplished, in part, by pressure in a fluid chamber exerting a biasing force on the spool, the fluid chamber being in communication with drain through a variable orifice which is variable in response to a pressure command signal. This signal is generated by control logic including a torque command signal generator which is variable to correspond to a maximum desired input torque setting and circuitry providing a torque approximation signal representing the product of pump displacement and the instantaneous pressure command signal. The circuitry compares the torque command and torque approximation signals and generates a new pressure command signal tending to minimize the difference between the torque command and approximation signals. As a result, the commanded maximum system pressure varies such that the product of maximum system pressure and pump displacement (equal to input torque) is constant, for a given input torque setting.

    Abstract translation: 一种用于静液压变速器的电动液压控制装置，其包括可变排量液压泵和流体可操作的伺服机构，以改变泵的排量。 电液控制串联在电荷泵和标准手动控制器之间，并确定输入到标准控制器的充电流体的最大压力。 电液压控制包括一个向第一位置偏置的阀芯，用于将流体从电荷泵输送到标准控制器，并且朝向第二位置偏压，以缓解输送到手动控制器的流体的压力。 朝向第二方向的偏压部分地通过在阀芯上施加偏置力的流体室中的压力来实现，流体室通过可变孔口而连通，可变孔口响应于压力指令信号而变化。 该信号由包括扭矩指令信号发生器的控制逻辑产生，转矩指令信号发生器可以变化以对应于最大期望输入转矩设置，以及提供表示泵位移和瞬时压力指令信号的乘积的转矩近似信号的电路。 该电路比较转矩指令和转矩近似信号，并产生一个新的压力指令信号，以使转矩指令和近似信号之间的差异最小化。 因此，对于给定的输入转矩设置，指令的最大系统压力变化，使得最大系统压力和泵排量（等于输入转矩）的乘积是恒定的。

    Variable displacement compressors which estimate an inclination angle of a plate of the compressor
    10.
    发明授权
    Variable displacement compressors which estimate an inclination angle of a plate of the compressor 失效
    估计压缩机板的倾斜角度的可变排量压缩机

    公开(公告)号：US06991435B2

    公开(公告)日：2006-01-31

    申请号：US10441236

    申请日：2003-05-20

    Applicant: Yoshihiro Ochiai

    Inventor： Yoshihiro Ochiai

    IPC: F04B49/00

    CPC classification number: F04B27/1804 ,  F04B49/065 ,  F04B2201/0201 ,  F04B2201/1202 ,  F04B2201/1204

    Abstract: A variable displacement compressor includes a plate having a variable inclination angle, and a piston engaging the plate. The piston reciprocates within a bore of the compressor in accordance with a rotation of the plate, and the piston has a stroke length which is determined by the inclination angle of the plate. The compressor also includes a sensor positioned adjacent to the piston. The sensor generates an output signal when a predetermined portion of the piston is aligned with the sensor. The compressor also includes a processing unit operationally coupled to the sensor. The processing unit estimates the inclination angle of the plate based on the output signal from the sensor.

    Abstract translation: 可变排量压缩机包括具有可变倾斜角的板和与板接合的活塞。 活塞根据板的旋转而在压缩机的孔内往复运动，并且活塞具有由板的倾斜角确定的冲程长度。 压缩机还包括邻近活塞定位的传感器。 当活塞的预定部分与传感器对准时，传感器产生输出信号。 压缩机还包括可操作地耦合到传感器的处理单元。 处理单元基于来自传感器的输出信号估计板的倾斜角度。

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