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    • 5. 发明授权
    • Apparatus and method for electronic control of automatic transmission
avoiding over-quick double gear changing
    • 用于自动变速器电子控制的装置和方法,避免过快双档变速
    • US4486838A
    • 1984-12-04
    • US341270
    • 1982-01-21
    • Hiroshi ItohMotoki Endo
    • Hiroshi ItohMotoki Endo
    • B60W10/04B60W10/10B60W10/11F16H61/02F16H61/04F16H61/10F16H61/18G05D17/02B60K41/08
    • F16H61/0206Y10T477/693625
    • A transmission control device, for a road vehicle with an engine and a transmission which has a gearbox which includes several fluid pressure activated friction engaging mechanisms and which can provide at least three forward speed stages according to selective supplying of actuating pressures to the friction engaging mechanisms, practices a transmission control method. An electrically actuated hydraulic pressure control device selectively supplies actuating pressures to the friction engaging mechanisms so as to engage any one of the forward speed stages i.e. gear ratios. An electronic control system repeatedly at short time intervals receives from a road speed sensor and an engine load sensor signals representative of road speed and of engine load, then determines a target speed stage, then determines a decided speed stage, and then energizes the hydraulic pressure control device to engage the decided speed stage. The decided speed stage is determined so as to cause, when the actual speed stage and the target speed stage differ by less than two speed stages, immediate shifting of the gearbox to the target speed stage; and is also determined so as to cause, when the actual speed stage and the target speed stage differ by two or more speed stages, at least sometimes shifting of the gearbox by steps of one speed stage at a time to the target speed stage, the shifts by steps being separated in time by at least a predetermined first time interval.
    • 一种用于具有发动机和变速器的道路车辆的变速器控制装置,所述变速器具有包括若干流体压力启动的摩擦接合机构的变速箱,并且可根据向所述摩擦接合机构选择性地供给致动压力而提供至少三个前进档 ,实行传输控制方法。 电动液压控制装置选择性地向摩擦接合机构提供致动压力,以便接合前进速度级中的任何一个,即传动比。 以较短时间间隔反复重复的电子控制系统从道路速度传感器和代表道路速度和发动机负荷的发动机负载传感器信号接收,然后确定目标速度级,然后确定确定的速度级,然后给液压 控制装置参与决定速度阶段。 确定速度级被确定为当实际速度级和目标速度级相差小于两个速度级时,齿轮箱立即转移到目标速度级; 并且还被确定为当实际速度级和目标速度级相差两个或更多个速度级时,至少有时将齿轮箱以一个速度级逐步移动到目标速度级, 通过在时间上分离至少预定的第一时间间隔的步骤。