Control system for servo hydraulic pressure of two friction engaging
means during an N-R shift in automatic transmission
    2.
    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
    3.
    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。

    Five-speed automatic transmission
    6.
    发明授权
    Five-speed automatic transmission 失效
    五速自动变速箱

    公开(公告)号:US5254053A

    公开(公告)日:1993-10-19

    申请号:US964631

    申请日:1992-10-23

    IPC分类号: F16H3/62 F16H3/44 F16H3/66

    CPC分类号: F16H3/66 F16H2200/0047

    摘要: A five-speed automatic transmission includes a main transmission and an over-drive transmission of a front disposition type. The main transmission includes three sets of planetary gears, a clutch for engaging and disengaging speed-change elements of the planetary gear sets, and a brake for fixing and releasing the speed change elements, and provides for four forward speed ranges and one reverse speed range. In the over-drive transmission of a front disposition type, a speed change element of an over-drive planetary gear set connected to an input element of the main transmission is adapted to be engaged, disengaged and fixed for achieving either a directly coupled stage or an over-drive stage. The over-drive transmission releases the direct coupling for reverse driving operation. One of the clutches of the main transmission for achieving the directly coupled stage and one of the brakes for achieving the low speed stage are engageable in the reverse driving operation.

    摘要翻译: 五速自动变速器包括主变速器和前部配置型的过驱动变速器。 主变速器包括三组行星齿轮,用于接合和分离行星齿轮组的变速元件的离合器和用于固定和释放变速元件的制动器,并且提供四个前进速度范围和一个倒档速度范围 。 在前部配置型的过驱动传动中,连接到主变速器的输入元件的过驱动行星齿轮组的变速元件适于接合,分离和固定,以实现直接耦合的级或 过驱动阶段。 过驱动传动释放用于反向驱动操作的直接联接。 用于实现直接耦合级的主变速器的离合器之一和用于实现低速级的制动器之一可接合于反向驱动操作。

    Control system for automatic transmission
    10.
    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。