Gearshift control system for automatic transmissions using air flow
sensor
    1.
    发明授权
    Gearshift control system for automatic transmissions using air flow sensor 失效
    换挡控制系统,用于使用气流传感器的自动变速器

    公开(公告)号:US4318312A

    公开(公告)日:1982-03-09

    申请号:US49342

    申请日:1979-06-18

    摘要: A gear shift control system for an automatic transmission comprises an air flow sensor for sensing the quantity of air taken into an internal combustion engine and supplying a corresponding electrical signal to a differentiator which provides a derivative of the sensed intake air quantity. A vehicle speed sensor senses the speed of rotation of the engine crankshaft to generate a corresponding signal. A gear shift decision circuit is receptive of signals from the air flow sensor and vehicle speed sensor to define a gear shift control line on a two-dimensional coordinate system as a function of the received input signals on respective coordinate axes. The derivative of the sensed air quantity is used to shift the gear shift control line to a higher speed side of the coordinate system to permit the transmission to effect downshift operation.

    摘要翻译: 用于自动变速器的变速控制系统包括用于感测进入内燃机的空气量并将相应的电信号提供给提供感测进气量的导数的微分器的空气流量传感器。 车速传感器感测发动机曲轴的旋转速度以产生相应的信号。 变速判定电路接受来自空气流量传感器和车速传感器的信号,以在二维坐标系上定义换档控制线作为在各坐标轴上接收的输入信号的函数。 感测空气量的导数用于将变速控制线移动到坐标系的较高速度侧,以允许变速器实现降档操作。