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    Control arrangement for a hydrostatic system
    21.
    发明授权
    Control arrangement for a hydrostatic system 失效
    静液压系统的控制装置

    公开(公告)号：US5561979A

    公开(公告)日：1996-10-08

    申请号：US390001

    申请日：1995-02-17

    Applicant: Alan R. Coutant ,  Jerry D. Marr

    Inventor： Alan R. Coutant ,  Jerry D. Marr

    IPC: F15B11/02 ,  F04B49/06 ,  F15B21/08 ,  F16D31/02

    CPC classification number: F16H61/462 ,  F04B49/065 ,  F15B21/087 ,  F04B2201/1201 ,  F04B2203/1201 ,  F16H61/425 ,  F16H61/435

    Abstract: In many hydrostatic systems, the variable displacement pump is controlled by an operator moving a directional control valve to provide pressurized fluid to the displacement changing mechanism thereof which in turn varies the displacement responsive to the degree of pressurized fluid being directed to the displacement changing mechanism. In order to insure that the displacement of the Variable displacement pump is at the desired displacement, various forms of follow-up mechanisms have been required. These follow-up mechanisms are many times complicated and expensive to add to the hydrostatic system. In the subject arrangement, the speed of the pump input shaft and the speed of the motor output shaft is sensed (R,S) and the signals directed to a microprocessor which in turn processes the signals and directs a control signal (P) to a solenoid operated proportional valve. The solenoid operated proportional valve moves in response to the control signal and directs pressurized fluid to the displacement controller of the variable displacement pump to change the displacement thereof. Once the speed of the output shaft is achieved, the microprocessor modifies the control signal to maintain the variable displacement pump at the needed displacement position to maintain the desired speed of the output shaft to a work system. This arrangement provides an accurate control of the displacement of the variable displacement pump without the need of providing complicated follow-up mechanisms and/or servo mechanisms.

    Abstract translation: 在许多流体静力学系统中，可变排量泵由操作者控制方向控制阀来控制，以将加压流体提供给其位移改变机构，该位移改变机构又响应于加压流体被引导到位移改变机构的程度而改变位移。 为了确保可变排量泵的位移处于所需的位移，已经需要各种形式的后续机构。 这些后续机制多次复杂并且昂贵，以增加静液压系统。 在主题布置中，泵输入轴的速度和电动机输出轴的速度被感测（R，S），并且指向微处理器的信号，微处理器进而处理信号并将控制信号（P）引导到 电磁比例阀。 电磁比例阀响应于控制信号而移动，并将加压流体引导到可变排量泵的排量控制器以改变其位移。 一旦实现输出轴的速度，微处理器就改变控制信号，以将可变排量泵保持在所需的位移位置，以将输出轴的期望速度保持在工作系统上。 这种布置提供了可变排量泵的位移的精确控制，而不需要提供复杂的后续机构和/或伺服机构。

    Automotive air tempering apparatus
    23.
    发明授权
    Automotive air tempering apparatus 失效
    汽车空调回火设备

    公开(公告)号：US5014519A

    公开(公告)日：1991-05-14

    申请号：US510217

    申请日：1990-04-17

    Applicant: Ikutaro Noji ,  Masaki Kato ,  Masaki Kaiju ,  Ikuo Kinami

    Inventor： Ikutaro Noji ,  Masaki Kato ,  Masaki Kaiju ,  Ikuo Kinami

    IPC: B60H1/00 ,  B60H1/32 ,  F04B27/18 ,  F25B49/02

    CPC classification number: B60H1/3207 ,  F04B27/1804 ,  F25B49/022 ,  F04B2027/1813 ,  F04B2027/1831 ,  F04B2027/1854 ,  F04B2027/1859 ,  F04B2201/1201 ,  F04B2207/03

    Abstract: An air tempering apparatus for use in an automotive vehicle having a duct through which air is directed into a passenger compartment. The apparatus comprises an air chilling unit having a variable refrigerating capacity of chilling the air in the duct, and an air reheating unit having a variable reheating capacity of reheating the chilled air in the duct. A control unit decreases the reheating capacity of the air heating unit as the chilled air temperature increases. The control unit decreases the refrigerating capacity of the air chilling means when the reheating capacity of the air reheating means is greater than a predetermined value and when the sensed humidity is less than a predetermined value.

    Abstract translation: 一种用于机动车辆的空气回火设备，其具有通过空气导入乘客舱的管道。 该装置包括具有冷却管道中的空气的可变制冷能力的空气冷却单元和具有可再加热能力的空气再加热单元，该再加热能力使冷却空气在管道中再加热。 控制单元随着冷却空气温度升高而降低空气加热单元的再加热能力。 当空气再加热装置的再加热能力大于预定值时，并且当感测到的湿度小于预定值时，控制单元降低空气冷冻装置的制冷能力。

    Fluid operated pump displacement control system
    25.
    发明授权
    Fluid operated pump displacement control system 失效
    流体泵排量控制系统

    公开(公告)号：US4600364A

    公开(公告)日：1986-07-15

    申请号：US621555

    申请日：1984-06-18

    Applicant: Tohru Nakatani ,  Teruo Akiyama

    Inventor： Tohru Nakatani ,  Teruo Akiyama

    IPC: F04B49/00 ,  F04B49/08 ,  F16H61/46 ,  F16H61/468

    CPC classification number: F16H61/468 ,  F04B49/002 ,  F04B49/08 ,  F16H61/46 ,  F04B2201/1201 ,  F04B2201/1202 ,  F04B2201/1204

    Abstract: A control system for a variable displacement pump or pumps driven by a vehicular engine for supplying pressurized fluid to implement actuators via implement control valves. The engine has several output conditions each with a different output torque characteristic. The control system includes a servomechanism comprising a servoactuator section coupled to the pump for varying the per cycle displacement thereof, a servovalve section for operating the servoactuator section by fluid pressure from a fixed displacement pump, and a control section for actuating the servovalve section. The servomechanism control section is fluid operated from a torque control valve, which delivers a controlled degree of fluid pressure from the fixed displacement pump to the control section in order to correspondingly vary the torque requirement of the variable displacement pump. The torque control valve is solenoid operated from a controller in association with a sensor capable of sensing each output condition in which the engine operates, in such a way that the torque requirement of the pump is controlled to suit the sensed output condition of the engine. The servomechanism control section is further under the control of a drain sensor effective to control the pump displacement in accordance with the flow rate of the fluid being drained from the implement control valves.

    Abstract translation: 用于可变排量泵的控制系统或由车辆发动机驱动的泵，用于供应加压流体以通过工具控制阀实施致动器。 发动机具有多个输出条件，每个具有不同的输出转矩特性。 控制系统包括伺服机构，其包括联接到泵的用于改变其每个循环位移的伺服致动器部分，用于通过来自固定排量泵的流体压力操作伺服驱动部分的伺服阀部分和用于致动伺服阀部分的控制部分。 伺服机构控制部分由转矩控制阀流体操作，该转矩控制阀将可控程度的流体压力从固定排量泵传递到控制部分，以便相应地改变可变排量泵的转矩要求。 扭矩控制阀由与能够检测发动机运行的每个输出状态的传感器相关联的控制器电磁操作，使得泵的扭矩需求被控制以适合于感测到的发动机的输出状态。 伺服机构控制部进一步在排水传感器的控制下，有效地根据从工具控制阀排出的流体的流量来控制泵的排量。

    Operation control apparatus of a compressor
    26.
    发明授权
    Operation control apparatus of a compressor 失效
    压缩机的运行控制装置

    公开(公告)号：US4393966A

    公开(公告)日：1983-07-19

    申请号：US196642

    申请日：1980-10-14

    Applicant: Hiroya Kono ,  Jun Hasegawa ,  Mitsukane Inagaki ,  Hisao Kobayashi

    Inventor： Hiroya Kono ,  Jun Hasegawa ,  Mitsukane Inagaki ,  Hisao Kobayashi

    IPC: F04B49/00 ,  F04B49/06 ,  F04B49/10 ,  F04B49/20 ,  F04B49/02 ,  F16D43/24

    CPC classification number: F04B49/20 ,  F04B49/065 ,  F04B49/103 ,  F04B2201/1201 ,  F04B2201/1206

    Abstract: An operation control apparatus is provided of a compressor having a rotary shaft which is rotated by a driving apparatus by way of a clutch. The operation control apparatus comprises a recess or projection formed in or on one end surface of the rotary shaft as a portion-to-be-sensed offset from the axis thereof, an electromagnetic sensor disposed in facing relation with a locus described by the recess or projection according to the rotation of the rotary shaft, and a pulse monitoring circuit connected to the sensor. The sensor generates a periodic pulse signal in response to rotation of the rotary shaft. The pulse monitoring circuit generates a clutch release commanding signal to the clutch when it receives no pulse signal from the sensor for a predetermined time duration to protect the driving apparatus.

    Abstract translation: 一种具有旋转轴的压缩机的操作控制装置，该旋转轴由驱动装置通过离合器旋转。 操作控制装置包括形成在旋转轴的一个端面中或其一个端面上的凹部或突起，作为从其轴线偏移的部分感测偏移的电磁传感器，与由凹部或者凹部 根据旋转轴的旋转投影，以及连接到传感器的脉冲监视电路。 传感器响应于旋转轴的旋转产生周期性脉冲信号。 脉冲监视电路在离开传感器没有脉冲信号预定持续时间的时候向离合器产生离合器释放指令信号，以保护驱动装置。

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