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    Hydraulic control system for automatic transmission
    3.
    发明公开
    Hydraulic control system for automatic transmission 失效
    用于自动变速器的自动变速箱液压控制系统液压控制系统

    公开(公告)号：EP0279606A3

    公开(公告)日：1990-06-27

    申请号：EP88301213.0

    申请日：1988-02-12

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kashihara, Yuji ,  Taga, Yutaka ,  Kubo, Seitoku

    IPC: F16H61/06

    CPC classification number: F16H61/067 ,  F16H59/30 ,  F16H61/061 ,  F16H2059/6807 ,  F16H2061/0078 ,  F16H2061/0255 ,  Y10T477/69378 ,  Y10T477/69387

    Abstract: A hydraulic control system for an automatic transmission has a shifting shock reducing device (112) capable of regulating the transitional oil pressure applied to the frictionally engaging devices (B2) of the automatic transmission, and provided between a shift valve (114) and the frictionally engaging devices (B2). The shifting shock reducing device (112) is controlled on the basis of a signal Pth representative of the torque of the engine, and a signal Psl representative of the transitional shift state to regulate the transistional oil pressure. Thus, the hydraulic control system is highly reliable, is capable of compensating for variations of the functions thereof over time, and is capable of maintaining a high control accuracy.

    Four wheel drive vehicle slippage control device
    4.
    发明公开
    Four wheel drive vehicle slippage control device 失效
    四轮驱动车辆的打滑控制装置。

    公开(公告)号：EP0226472A2

    公开(公告)日：1987-06-24

    申请号：EP86309723.4

    申请日：1986-12-12

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Nakamura, Yasunari ,  Taga, Yutaka ,  Kubo, Seitoku ,  Kashihara, Yuji ,  Morisawa, Kunio ,  Takada, Mitsuru

    IPC: B60K35/00 ,  F16H1/445 ,  B60K17/34 ,  B60K23/08

    CPC classification number: B60T8/322 ,  B60K23/0808 ,  B60W2530/10 ,  F16H61/46 ,  F16H61/58

    Abstract: In a four wheel drive power transmission system for a vehicle, a power distribution device receives rotational power from an engine (1) and provides rotational power to the combination of the front wheels and also to the combination of the rear wheels, and is controllable either to provide differential action between the front wheels combination and the rear wheels combination, or for this differential action to be at least partially inhibited by torque transmission. This slippage control device (45) includes: a subsystem which estimates the torque (49) being input to the power distribution device for four wheel drive from the transmission mechanism; and a subsystem which provides differential action inhibition of the power distribution device according to the thus estimated value of the torque being input to it from the transmission mechanism. The method of operation of this device is also described.

    Hydraulic control system for automatic transmission
    7.
    发明公开
    Hydraulic control system for automatic transmission 失效
    Hydraulische SteuerungfürAutomatikgetriebe。

    公开(公告)号：EP0279606A2

    公开(公告)日：1988-08-24

    申请号：EP88301213.0

    申请日：1988-02-12

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kashihara, Yuji ,  Taga, Yutaka ,  Kubo, Seitoku

    IPC: F16H61/06

    CPC classification number: F16H61/067 ,  F16H59/30 ,  F16H61/061 ,  F16H2059/6807 ,  F16H2061/0078 ,  F16H2061/0255 ,  Y10T477/69378 ,  Y10T477/69387

    Abstract: A hydraulic control system for an automatic transmission has a shifting shock reducing device (112) capable of regulating the transitional oil pressure applied to the frictionally engaging devices (B2) of the automatic transmission, and provided between a shift valve (114) and the frictionally engaging devices (B2). The shifting shock reducing device (112) is controlled on the basis of a signal Pth representative of the torque of the engine, and a signal Psl representative of the transitional shift state to regulate the transistional oil pressure. Thus, the hydraulic control system is highly reliable, is capable of compensating for variations of the functions thereof over time, and is capable of maintaining a high control accuracy.

    Abstract translation: 一种用于自动变速器的液压控制系统具有能够调节施加到自动变速器的摩擦接合装置（B2）的过渡油压并设置在换档阀（114）和摩擦力之间的换档减震装置（112） 接合装置（B2）。 基于表示发动机的转矩的信号Pth和表示过渡转换状态的信号Psl来调节换档减震装置（112），以调节转动油压。 因此，液压控制系统是高度可靠的，能够随时间补偿其功能的变化，并且能够保持高的控制精度。

    Hydraulic torque converter
    8.
    发明公开
    Hydraulic torque converter 失效
    液力变矩器。

    公开(公告)号：EP0232622A1

    公开(公告)日：1987-08-19

    申请号：EP86310132.5

    申请日：1986-12-24

    Applicant: AISIN-WARNER KABUSHIKI KAISHA ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hayabuchi, Masahiro ,  Tsukamoto, Kazumasa ,  Takahashi, Tokuyuki ,  Kubo, Seitoku ,  Kuramochi, Koujiro

    IPC: F16H41/26

    CPC classification number: F16H41/26 ,  F16H45/02 ,  F16H2045/0226 ,  F16H2045/0294

    Abstract: In a hydraulic torque converter having a torus (10) of flatness ratio (L/H) within the range 0.82 - 0.9, the outer and inner contours of the turbine (6) in a meridional plane through the axis of the turbine each comprises a combination of a plurality of circular arcs (A,B,C and D,L respectively) wherein the ratios (B/C, B/A, C/A) between the radii of the circular arcs constituting the outer contour is subs­tantially less than 2, and the ratio (E/D) between the radii of the circular arcs constituting the inner contour is also substantially less than 2. As a result, fluid flows through the turbine stably without being biased, increasing the velocity of relative flow along the turbine blade, and raising the normal speed ratio at which the absolute flow is in the direction of no impact, enabling a higher stall torque ratio without reduction in efficiency.

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