Clutch torque point learning method and clutch control method
    5.
    发明公开
    Clutch torque point learning method and clutch control method 有权
    学习离合器扭矩点的方法和一种用于控制离合器

    公开(公告)号:EP1243806A2

    公开(公告)日:2002-09-25

    申请号:EP02006208.9

    申请日:2002-03-19

    IPC分类号: F16D48/06

    摘要: The present invention aims to enable the accurate learning of a true torque point in a wet friction clutch (3), prevent the clutch connection shock by absorbing the response delay upon an ordinary clutch connection control, and to successfully combine the time lag and shock. In the present invention, the value (D) itself of the duty ratio of the duty pulse output from the ECU (16) is learned as the torque point (Dm). In a power transmission device of a vehicle having a fluid coupling (2) and the wet friction clutch (3)provided in series between the engine (E) and transmission (T/M), the value (Dm) of the duty ratio at the time when the clutch input side revolution (Nt) decreases to a value lower than the engine revolution (Ne) by a prescribed revolution (Nm) during the process of gradually connecting the clutch 3 is learned as the torque point. Preferably, learning is conducted after the elapse of a prescribed waiting time (Δt1). During an ordinary clutch connection control, a prescribed start duty (Dst0) for connecting the clutch (3) broadly up to a point close to the torque point (Dtb) is initially output from the ECU (16), and a gradual duty (Dk) is output after retaining such start duty (Dst0) for a prescribed time (Δt3). Preferably, a first gradual duty (Dk1) for gradually connecting the clutch quickly is output, and a second gradual duty (Dk2) for gradually connecting the clutch slowly is output thereafter.

    摘要翻译: 本发明的目的是使一个真正的转矩点的准确学习中的湿式摩擦离合器(3)防止离合器连接休克通过在普通的离合器连接控制吸收的响应延迟,并成功地结合的时间滞后和休克。 在本发明中,从ECU输出(16)的占空比的脉冲的占空比的值(D)本身被学习作为转矩点(DM)。 在具有流体联接器(2)和所述湿式摩擦离合器的车辆的动力传递装置(3)提供串联的占空比的在发动机(E)和变速器(T / M),值(DM)之间 时当离合器输入侧转速(NT)连接渐渐离合器3的过程中降低到由规定的转数(Nm)的比发动机转速(NE)低的值被学习为转矩点。 优选地,学习的规定的等待时间(DELTA T1)过去之后进行。 (在一个普通的离合器连接控制,用于连接所述离合器规定开始占空比(Dst0)(3)普遍上升到接近于扭矩点(DTB)的点是最初从ECU(16),和一个渐进的占空比的Dk输出 )是保持求开始占空比(Dst0)规定的时间(DELTA T3)后输出。 优选地,用于逐渐快速连接离合器的第一逐渐占空比(D K1)被输出,并且用于连接渐渐地离合器的第二逐渐占空比(K2)此后慢慢被输出。

    Touch point identification algorithm for automatic clutch controller
    9.
    发明公开
    Touch point identification algorithm for automatic clutch controller 失效
    Berührungspunkt-ErkennungsalgorithmusfürautomatischesKupplungssteuergerät。

    公开(公告)号:EP0635391A2

    公开(公告)日:1995-01-25

    申请号:EP94305236.5

    申请日:1994-07-18

    申请人: EATON CORPORATION

    IPC分类号: B60K41/24 F16D48/02

    摘要: This invention provides automatic and reliable determination of the touch point of a clutch controlled by an automatic clutch actuation controller. This invention determines the touch point upon power-up while idling the engine, with the transmission in neutral and an input shaft brake applied. The clutch actuation controller gradually engages the clutch so that the measured transmission input speed matches a reference speed signal preferably between 40% and 60% of the idle speed. If the actuation is slow enough, this reliably provides the degree of clutch engagement at a small torque matching the braking torque which is the touch point. If there is no previous knowledge of the touch point, the clutch is applied at a fast rate and an approximate touch point is determined, then the clutch is positioned below the approximate touch point and is again applied at a slow rate to more accurately ascertain the touch point. If there is previous knowledge of the touch point, the clutch is positioned just below the old touch point and is applied at a slow rate to determine a new touch point. The new and old touch points may be combined to determine the updated touch point.

    摘要翻译: 本发明提供了自动和可靠地确定由自动离合器致动控制器控制的离合器的接触点。 本发明在空转发动机时上电时确定接触点,其中变速器处于空档并且输入轴制动器被施加。 离合器致动控制器逐渐接合离合器,使得所测量的变速器输入速度与参考速度信号相匹配,优选地在空转速度的40%至60%之间。 如果致动足够慢,则可以以与作为接触点的制动转矩匹配的小转矩可靠地提供离合器接合程度。 如果先前不知道接触点,则以快速的速度施加离合器,并且确定近似接触点,然后离合器位于近似接触点的下方,并且以较慢的速率再次施加以更准确地确定 接触点。 如果先前了解了触摸点,则离合器位于旧触摸点的正下方,并以较慢的速率施加以确定新的触摸点。 可以组合新的和旧的触摸点以确定更新的触摸点。