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热词
    • 3. 发明授权
    • First and second hysteresis zones for shift and lock-up control system
in an automatic transmission
    • 第一和第二滞后区,用于自动变速器中的换档和锁定控制系统
    • US5683327A
    • 1997-11-04
    • US563385
    • 1995-11-28
    • Takeshi InuzukaMasashi HattoriYoshito Takeshita
    • Takeshi InuzukaMasashi HattoriYoshito Takeshita
    • F16H59/02F16H59/08F16H59/24F16H59/40F16H59/42F16H61/04F16H61/10F16H61/14
    • F16H61/143F16H61/10F16H2059/006F16H59/02F16H59/24F16H59/40F16H59/42F16H61/0437Y10T477/635Y10T477/6351Y10T477/75
    • A control system for an automatic transmission including a fluid transmission unit and a lockup clutch arranged in the fluid transmission unit. A running state sensor(s) detects the running state of the vehicle and outputs signals to an electronic control unit for deciding a shift and outputting a shift signal and for deciding lockup clutch ON/OFF and outputting a lockup ON/OFF signal. A hydraulic control unit selectively actuates a plurality of solenoid valves, in response to the output signals from the electronic control unit, to selectively apply/release a plurality of frictional engagement elements, to establish a new gear stage, and the lockup clutch. The electronic control unit (ECU) has stored in memory therein, a lockup diagram having a first hysteresis region defined by a lockup OFF line and a first lockup ON line, and a second hysteresis region defined by a second lockup ON line formed in the first hysteresis region and the first lockup ON line. The ECU compares the output signals of the running state sensor(s) against the lockup diagram to decide lockup clutch OFF, if the running state is in a region below the lockup OFF line, lockup clutch ON, if the running state is over the first lockup ON line, and lockup clutch ON if the running state is in the second hysteresis region. The ECU also outputs a lockup signal to a predetermined one of the solenoid valves to apply/release the lockup clutch in accordance with the results of the comparison.
    • 一种用于自动变速器的控制系统,包括设置在流体传动单元中的流体传动单元和锁止离合器。 运行状态传感器检测车辆的运行状态,并将信号输出到电子控制单元,用于确定换档并输出换档信号,并且用于决定锁止离合器的ON / OFF并输出锁定ON / OFF信号。 液压控制单元响应于来自电子控制单元的输出信号选择性地致动多个电磁阀,以选择性地施加/释放多个摩擦接合元件,以建立新的齿轮级和锁止离合器。 电子控制单元(ECU)已经存储在其中,具有由锁定OFF线和第一锁定ON线限定的第一滞后区的锁定图以及由在第一个中形成的第二锁定在线上限定的第二滞后区 滞后区域和第一个锁定ON线。 ECU将运行状态传感器的输出信号与锁定图进行比较,以确定锁止离合器OFF,如果运行状态处于锁定OFF线以下的区域,锁止离合器ON,如果运行状态超过第一 锁定ON线,并且如果运行状态处于第二滞后区域,则锁止离合器接通。 ECU还向预定的一个电磁阀输出锁定信号,以根据比较结果施加/释放锁止离合器。