Control system for automatic transmission
    1.
    发明授权
    Control system for automatic transmission 失效
    自动变速器控制系统

    公开(公告)号:US5588927A

    公开(公告)日:1996-12-31

    申请号:US455677

    申请日:1995-06-01

    摘要: A control system for an automatic transmission includes a first frictional engagement element and a second frictional engagement element; and a first hydraulic servo for controlling the application/release of the first frictional engagement element and a second hydraulic servo for controlling the application/release of the second frictional engagement element. A regulator valve regulates the oil pressure to the first hydraulic servo. A signal pressure is applied to the regulator valve to establish a predetermined gear stage by switching the applied/released states of the first frictional engagement element and the second frictional engagement element by feeding/releasing oil pressure to/from the first hydraulic servo and the second hydraulic servo. The regulator valve includes a valve member having: a first pressure receiving area to which is applied the feed pressure to the first hydraulic servo as a feedback pressure in a first direction; a second pressure receiving area to which is applied the signal pressure in a second direction opposite the first direction; a fourth pressure receiving area to which is applied the feed pressure to the second hydraulic servo in the first direction, in a shift wherein the first frictional engagement element is released while the second frictional-engagement element is applied; and a third pressure receiving area to which is applied the signal pressure in the second direction, for regulation of the oil pressure only during a shift.

    摘要翻译: 用于自动变速器的控制系统包括第一摩擦接合元件和第二摩擦接合元件; 以及用于控制第一摩擦接合元件的施加/释放的第一液压伺服机构和用于控制第二摩擦接合元件的施加/释放的第二液压伺服机构。 调节阀调节第一液压伺服系统的油压。 信号压力施加到调节阀,以通过将第一摩擦接合元件和第二摩擦接合元件的施加/释放状态通过向/从第一液压伺服机构供给/释放油压来切换第一摩擦接合元件和第二摩擦接合元件的施加/释放状态来建立预定齿轮级, 液压伺服 调节阀包括阀构件,该阀构件具有第一受压区域,第一压力接收区域向第一液压伺服机构施加作为第一方向的反馈压力的进给压力; 在与第一方向相反的第二方向施加信号压力的第二压力接收区域; 在施加第二摩擦接合元件的同时释放第一摩擦接合元件的变化中,向第一方向施加供给压力的第四压力接收区域; 以及在第二方向施加信号压力的第三压力接收区域,用于仅在变速期间调节油压。

    Control system for automatic transmission
    3.
    发明授权
    Control system for automatic transmission 失效
    自动变速器控制系统

    公开(公告)号:US5725451A

    公开(公告)日:1998-03-10

    申请号:US683861

    申请日:1996-07-17

    摘要: A control system for use in an automatic transmission which includes a gear shift mechanism having first and second frictional engagement elements for establishing: a first gear stage with the first frictional engagement element being applied and the second frictional engagement element being released; and a second gear stage with the first frictional engagement element being released and the second frictional engagement element being applied. The control system, in turn, includes: a first oil passage for feeding an oil pressure to the first frictional engagement element; a second oil passage for feeding an oil pressure to the second frictional engagement element; and a first valve arranged in the first oil passage for regulating the oil pressure of the first oil passage. At the time of a shift from the first gear stage to the second gear stage, the oil pressure of the first oil passage is regulated by the first valve responsive to the oil pressure of the second oil passage. The control system further includes a second valve arranged in the first oil passage for selectively feeding or shutting off the oil pressure of the first oil passage to and from the first frictional engagement element.

    摘要翻译: 一种用于自动变速器的控制系统,包括具有第一和第二摩擦接合元件的变速机构,用于建立:第一齿轮级,其中施加有第一摩擦接合元件,第二摩擦接合元件被释放; 以及第二齿轮台,其中第一摩擦接合元件被释放并且第二摩擦接合元件被施加。 控制系统又包括:用于向第一摩擦接合元件供给油压的第一油通道; 用于向第二摩擦接合元件供给油压的第二油通道; 以及配置在第一油路中的第一阀,用于调节第一油路的油压。 在从第一档位转换到第二档位时,响应于第二油通道的油压,第一油通道的油压被第一阀调节。 控制系统还包括布置在第一油路中的第二阀,用于选择性地将第一油通道的油压与第一摩擦接合元件的供油或切断。

    Shift control system for preventing engine racing
    6.
    发明授权
    Shift control system for preventing engine racing 失效
    换档控制系统,用于防止发动机赛车

    公开(公告)号:US5583768A

    公开(公告)日:1996-12-10

    申请号:US611972

    申请日:1996-03-06

    摘要: A shift control system for shifting an automatic transmission from a predetermined gear stage to another by draining an oil pressure from predetermined frictional engagement element to release the same frictional engagement element and by feeding the oil pressure to another frictional engagement element to engage the same frictional engagement element while controlling the drain oil pressure of the frictional engagement element to be released and the engaging oil pressure to the frictional engagement element to be engaged. The shift control system includes an engine racing detector for detecting the racing of the engine while the transmission is being shifted in a clutch-to-clutch manner, and a hydraulic control circuit for controlling at least one of the drain oil pressure and the engaging oil pressure, on the basis of the degree of racing of the engine, as detected by the engine racing detector, such that the amount of racing of the engine falls within a predetermined range. Since the rotational state of the engine being shifted is controlled by hydraulic control of the frictional engagement elements participating in the clutch-to-clutch shift, it is possible to reliably prevent any excessive racing of the engine and to prevent reduction of output shaft torque due to the tie-up of the frictional engagement elements.

    摘要翻译: 一种变速控制系统,用于通过从预定的摩擦接合元件排出油压以释放相同的摩擦接合元件并通过将油压馈送到另一个摩擦接合元件来接合相同的摩擦接合,从而将自动变速器从预定齿轮级移动到另一个齿轮级 同时控制要释放的摩擦接合元件的排出油压力和与摩擦接合元件接合的接合油压。 变速控制系统包括:发动机转速检测器,用于在变速器以离合器离合器方式移动时检测发动机的行驶;以及液压控制回路,用于控制排油压力和接合油中的至少一个 基于由发动机赛车检测器检测到的发动机的赛车程度,使得发动机的行驶量落在预定范围内的压力。 由于通过参与离合器离合器换档的摩擦接合元件的液压控制来控制发动机的旋转状态,因此可以可靠地防止发动机的任何过度的运转,并且防止输出轴的扭矩减小 到摩擦接合元件的结合。

    Control system for automatic transmission
    7.
    发明授权
    Control system for automatic transmission 失效
    自动变速器控制系统

    公开(公告)号:US5593365A

    公开(公告)日:1997-01-14

    申请号:US509456

    申请日:1995-07-31

    摘要: A control system for an automatic transmission including a main transmission unit for setting a reverse stage and a plurality of forward stages and an auxiliary transmission unit connected in series to the main transmission unit and capable to be changed between two higher and lower stages. The control system comprises: a solenoid valve for outputting a signal pressure when at least the reverse stage and a predetermined one of the forward stages are to be set; a change-over valve for changing the signal pressure selectively into a signal pressure for setting the auxiliary transmission unit to a high gear stage and a signal pressure for controlling an engine braking state; and an engine braking control valve for controlling an engine braking frictional element at the predetermined forward stage into a released state in response to the signal pressure coming from the change-over valve. The acting state of the solenoid valve when the reverse stage is to be set and the acting state of the solenoid valve when the predetermined forward stage for making the engine braking ineffective is to be set are identical to each other.

    摘要翻译: 一种用于自动变速器的控制系统,包括用于设置反向级的主传动单元和多个前级,以及与主传动单元串联连接并能够在两个较高和较低级之间变化的辅助传动单元。 所述控制系统包括:电磁阀,用于在至少所述反向级和所述前级中的预定的一级被设定时输出信号压; 用于将信号压力选择性地改变成用于将辅助变速器单元设置到高档位的信号压力和用于控制发动机制动状态的信号压力的换向阀; 以及发动机制动控制阀,用于响应于来自转换阀的信号压力,将预定的前级的发动机制动摩擦元件控制到释放状态。 要设定倒档时的电磁阀的作用状态和要使发动机制动无效的规定的前进阶段要被设定时的电磁阀的动作状态相同。

    Control system for servo hydraulic pressure of two friction engaging
means during an N-R shift in automatic transmission
    9.
    发明授权
    Control system for servo hydraulic pressure of two friction engaging means during an N-R shift in automatic transmission 失效
    自动变速器中N-R换档期间两个摩擦接合装置的伺服液压控制系统

    公开(公告)号:US5351577A

    公开(公告)日:1994-10-04

    申请号:US982679

    申请日:1992-11-27

    摘要: A control system is provided for servo hydraulic pressure in an automatic transmission having planetary gear mechanisms. Shifting elements of the mechanisms can be connected to establish a different power flow in accordance with engagement or release of frictional engagement devices under the control of servo hydraulic pressure to achieve plural speed stages. The system comprises first and second frictional engagement devices engageable simultaneously in a reverse range, first and second servo pressure feed lines for feeding servo hydraulic pressure to the devices, a regulator valve disposed in the first line, a solenoid for controlling the valve, an electronic control unit for outputting a signal to the solenoid, and a detector for detecting shifting to the reverse range. The valve is controlled by the solenoid in accordance with an output from the unit upon detection of shifting to the reverse range by the detector, whereby engagement of the first device is coincided with that of the second device.

    摘要翻译: 在具有行星齿轮机构的自动变速器中提供用于伺服液压的控制系统。 可以连接机构的移动元件,以在伺服液压控制下根据摩擦接合装置的接合或释放建立不同的动力流,以实现多个速度级。 该系统包括可同时接合在反向范围内的第一和第二摩擦接合装置,用于将伺服液压送到装置的第一和第二伺服压力供给管线,设置在第一管路中的调节阀,用于控制阀门的电磁阀, 用于向螺线管输出信号的控制单元和用于检测向相反范围移动的检测器。 当检测器检测到向相反范围的移动时,阀门由螺线管根据单元的输出控制,由此第一装置的接合与第二装置的接合一致。

    Control system for servo hydraulic pressure in vehicular automatic
transmission
    10.
    发明授权
    Control system for servo hydraulic pressure in vehicular automatic transmission 失效
    车辆自动变速器伺服液压控制系统

    公开(公告)号:US5334114A

    公开(公告)日:1994-08-02

    申请号:US980605

    申请日:1992-11-24

    摘要: A control system is provided for servo hydraulic pressure in a vehicular automatic transmission having planetary gear mechanisms. Shifting elements of the mechanisms can be connected to establish a different power flow in accordance with engagement or release of frictional engagement devices under the control of servo hydraulic pressure to achieve plural speed stages. The system comprises a servo pressure feed line for feeding, even in a non-running range, servo hydraulic pressure to at least one particular device out of plural frictional engagement devices which are caused to simultaneously engage in a reverse range of the transmission, a directional control valve disposed in the line to control feed or drain of the servo hydraulic pressure to or from said particular device through the line, and a solenoid valve for controlling the control valve to prevent the feed of the servo hydraulic pressure at vehicle speeds above a predetermined value.

    摘要翻译: 在具有行星齿轮机构的车辆自动变速器中提供用于伺服液压的控制系统。 可以连接机构的移动元件,以在伺服液压控制下根据摩擦接合装置的接合或释放建立不同的动力流,以实现多个速度级。 该系统包括伺服压力供给管线,用于甚至在非运行范围内将多个摩擦接合装置中的至少一个特定装置的伺服液压进给到同时进入变速器的反向范围的方向 设置在该管线中的控制阀,以控制通过该管线从所述特定装置进入或从所述特定装置排出的伺服液压;以及电磁阀,用于控制控制阀,以防止伺服液压在车速超过预定值 值。