Transmission upshift run-through detection and control
    6.
    发明授权
    Transmission upshift run-through detection and control 有权
    变速箱换档检测和控制

    公开(公告)号:US08131435B2

    公开(公告)日:2012-03-06

    申请号:US12255722

    申请日:2008-10-22

    IPC分类号: F16H61/04 B60W10/04

    摘要: A control system for a transmission of a vehicle comprises an actuation module and an upshift control module. The transmission has a first gear that corresponds to a first transmission ratio and a second gear that corresponds to a second transmission ratio that is less than the first transmission ratio. The actuation module controls an amount torque transferred to the second gear using a friction device. The upshift control module selectively increases the amount of torque transferred to the second gear based on a comparison of the first transmission ratio and a measured transmission ratio at a predetermined period of time after an upshift to the second gear is commanded, wherein the measured transmission ratio is determined based on an input speed of the transmission divided by an output speed of the transmission.

    摘要翻译: 用于车辆传动的控制系统包括致动模块和升档控制模块。 变速器具有对应于第一变速比的第一齿轮和对应于小于第一变速比的第二变速比的第二齿轮。 致动模块使用摩擦装置控制转移到第二档位的扭矩。 升档控制模块根据第一变速比和指定了升档至第二档后的预定时间段的测量变速比的比较,选择性地增加传递到第二档的转矩量,其中测量的变速比 基于传输的输入速度除以传输的输出速度来确定。

    Automatic transmission control system
    9.
    发明授权
    Automatic transmission control system 有权
    自动变速器控制系统

    公开(公告)号:US07713167B2

    公开(公告)日:2010-05-11

    申请号:US11686435

    申请日:2007-03-15

    IPC分类号: F16H59/00

    摘要: An automatic transmissions control system varies times to start a shift to securing a good response in engagement pressure for an engagement-side frictional element as well as suppressing occurrence of hydraulic pressure vibrations at low temperatures. The control system has an engagement pressure at-low-temperature regulation section that selectively controls at least one of the first and second engagement-pressure regulator valves, when the oil temperature is detected to be lower than a predetermined oil temperature and the shift condition is determined to exist requiring a shift operation such that the first engagement-pressure regulator valve provides a maximum hydraulic pressure to engage the first frictional element to start a shift with the maximum hydraulic pressure being continuously provided until the shift ends, and/or the second engagement-pressure regulator valve provides a minimum hydraulic pressure to obtain complete disengagement of the second frictional element to start a downshift as the shift operation.

    摘要翻译: 自动变速器控制系统变化多次,以开始转换,以确保接合侧摩擦元件的接合压力的良好响应以及抑制低温下的液压振动的发生。 控制系统具有接合压力低温调节部,其选择性地控制第一和第二接合压力调节阀中的至少一个,当检测到油温低于预定油温时,变速条件为 确定存在需要换档操作,使得第一接合压力调节阀提供最大液压以接合第一摩擦元件以开始换档,同时连续提供最大液压直到换档结束,和/或第二接合 压力调节阀提供最小液压,以获得第二摩擦元件的完全分离,以开始换档作为换档操作。