Method and system for upshifting an automatic transmission
    2.
    发明授权
    Method and system for upshifting an automatic transmission 失效
    自动变速器升档的方法和系统

    公开(公告)号:US4254671A

    公开(公告)日:1981-03-10

    申请号:US882138

    申请日:1978-02-28

    IPC分类号: F16H59/20 F16H61/02 B60K41/10

    摘要: For automotive vehicles having an engine which has a speed governor which is activated when the engine reaches the maximum permissible engine speed, an AND-gate is supplied which furnishes an upshift signal when the engine speed has reached the maximum permissible speed and when, simultaneously, the pedal is at the full load position or the kickdown switch is activated. The upshift signal is applied to the control circuit for the automatic transmission. It may be combined with a signal signifying vehicle speed in a direction so as to increase the apparent vehicle speed or with a signal indicative of throttle position to indicate an actual lower engine load than present.

    摘要翻译: 对于具有发动机在发动机达到最大允许发动机转速时启动的发动机的机动车辆,当发动机转速已经达到最大允许速度时,提供一个“与”门,该“门”提供升档信号, 踏板处于满载位置或启动降档开关。 升档信号被施加到用于自动变速器的控制电路。 它可以与表示车辆速度的方向的信号组合,以便增加表观车速,或者与表示节气门位置的信号相结合,以指示比现在更低的发动机负载。

    Control system for automotive automatic transmission with emergency
operation feature
    3.
    发明授权
    Control system for automotive automatic transmission with emergency operation feature 失效
    汽车自动变速器控制系统具有应急操作功能

    公开(公告)号:US4233860A

    公开(公告)日:1980-11-18

    申请号:US883367

    申请日:1978-03-06

    IPC分类号: F16H61/00 F16H61/12 F16H3/74

    摘要: To permit placing an electrical-hydraulical controlled automatic transmission, selectively, in reverse or neutral position upon failure of the control or command system, a spool valve is interposed between a fluid pressure pump and the control unit, the spool valve having three positions in which it can be placed manually; one of the positions is its normal operating position in which the valve provides a straight fluid path for pressurized fluid from the pump to the control unit; the other two positions are operable under emergency conditions, a second position providing a connection directly from the valve to the hydraulic servo units associated with control of the reverse gear, and the third interrupting suppply of hydraulic fluid from the pump to the control unit so that the control unit will, effectively, be placed in neutral position.

    摘要翻译: 为了允许在控制或命令系统故障时选择性地将电液压控制的自动变速器置于反向或中立位置,滑阀被插入在流体压力泵和控制单元之间,滑阀具有三个位置 它可以手动放置; 其中一个位置是其正常操作位置,其中阀提供用于从泵到控制单元的加压流体的直的流体路径; 另外两个位置在紧急情况下可操作,第二位置提供从阀门直接连接到与倒档齿轮的控制相关联的液压伺服单元的连接,以及液压流体从泵到控制单元的第三次中断,使得 控制单元将被有效地置于中立位置。