CLUTCH CONTROL SYSTEM
    3.
    发明授权
    CLUTCH CONTROL SYSTEM 失效
    离合器控制系统

    公开(公告)号:EP0735957B1

    公开(公告)日:1998-09-09

    申请号:EP95934247.8

    申请日:1995-10-20

    IPC分类号: B60K41/02

    摘要: A clutch control system for the automatic control of a motor vehicle clutch (14) which connects an engine (10) with a gearbox (12) under the control of a driver-operated gear ratio selector member (24). The control system includes an electronic control unit (36) which controls the level of clutch engagement in response to an engine speed error signal (E) derived from a comparison of current engine speed (Ve) and a reference speed signal (Vr) generated by the control unit. A sensing means (19a) is provided to detect a "foot-off" condition of an engine controlling accelerator pedal (19) and to provide an indication of the full range of movement of the accelerator pedal from the "foot-off" condition to the fully depressed position. The electronic control unit (36) responds to an accelerator pedal "foot-off" signal to ensure that the reference speed signal is above the engine idle signal by a predetermined amount to prevent creeping of the associated vehicle due to partial clutch engagement at engine idle. In the "foot-on" condition of the accelerator pedal the reference speed signal is switched to a level determined by accelerator pedal position which is close to engine idle speed at low levels of accelerator pedal depression so that the clutch will engage to a torque transmitting level thus allowing the vehicle to be manoeuvred at low engine speeds.

    摘要翻译: 一种用于在驾驶员操作的传动比选择器构件(24)的控制下将发动机(10)与变速箱(12)连接的机动车辆离合器(14)的自动控制的离合器控制系统。 控制系统包括电子控制单元(36),该电子控制单元响应于从当前发动机速度(Ve)和由参考速度信号(Vr)产生的参考速度信号(Vr)的比较得出的发动机速度误差信号(E)来控制离合器接合程度 控制单元。 提供感测装置(19a)以检测发动机控制加速器踏板(19)的“断开”状态,并且提供加速器踏板从“断开”状态到全部移动范围的指示 完全压低的位置。 电子控制单元(36)响应加速踏板“切断”信号以确保参考速度信号高于发动机怠速信号预定量,以防止由于在发动机怠速时的部分离合器接合而导致相关车辆的爬行 。 在加速器踏板的“脚踏”状态下,基准速度信号被切换到加速器踏板位置所确定的水平,该水平接近发动机怠速时的加速器踏板低压水平,使得离合器将接合到扭矩传输 因此允许车辆在低发动机速度下操纵。