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    Method of controlling clutch slip during gear shifts of an automatic transmission
    5.
    发明授权
    Method of controlling clutch slip during gear shifts of an automatic transmission 有权
    自动变速器变速时控制离合器滑差的方法

    公开(公告)号：US07349785B2

    公开(公告)日：2008-03-25

    申请号：US10813898

    申请日：2004-03-31

    申请人： Chunhao J. Lee ,  Kumaraswamy V. Hebbale ,  Chi-Kuan Kao ,  Farzad Samie ,  Richard W. Carlson

    发明人： Chunhao J. Lee ,  Kumaraswamy V. Hebbale ,  Chi-Kuan Kao ,  Farzad Samie ,  Richard W. Carlson

    IPC分类号： G06F19/00 ,  B60W10/02

    CPC分类号： F16H61/061 ,  F16H2059/465 ,  F16H2061/0075 ,  F16H2061/0462 ,  Y10T477/60 ,  Y10T477/6203 ,  Y10T477/638 ,  Y10T477/6433

    摘要： A method is provided for controlling engagement of a clutch which carries torque before, during and after a shifting event in a transmission which is connected to a throttle-controlled engine. The method includes providing a feed forward input command which increases as the engine torque increases and decreases as the engine torque decreases. A feed-back input command is provided as a function of the error between measured clutch slip and a reference slip profile. The feed-forward input command and feed-back input command are summed to provide a clutch control command for controlling engagement of the clutch before, during and after the shifting event to allow a desired amount of clutch slip to damp excitation of the transmission.

    摘要翻译： 提供了一种用于控制在连接到节气门控制的发动机的变速器中在变速事件之前，期间和之后承受扭矩的离合器的接合的方法。 该方法包括提供当发动机扭矩减小时发动机扭矩增加而减小的前馈输入命令。 提供反馈输入命令作为测量的离合器滑差与基准滑差分布之间的误差的函数。 前馈输入指令和反馈输入命令相加，以提供离合器控制命令，用于在变速事件之前，之中和之后控制离合器的接合，以允许期望量的离合器打滑以阻尼变速器的励磁。

    Powertrain pressure control system
    8.
    发明授权
    Powertrain pressure control system 有权
    动力总成压力控制系统

    公开(公告)号：US08794411B2

    公开(公告)日：2014-08-05

    申请号：US13166856

    申请日：2011-06-23

    申请人： Chunhao J. Lee ,  Chi-Kuan Kao ,  Farzad Samie ,  Kumaraswamy V. Hebbale ,  Dongxu Li ,  Andrew L. Bartos ,  Kevin B. Rober

    发明人： Chunhao J. Lee ,  Chi-Kuan Kao ,  Farzad Samie ,  Kumaraswamy V. Hebbale ,  Dongxu Li ,  Andrew L. Bartos ,  Kevin B. Rober

    IPC分类号： F16D41/12 ,  F16D25/12

    CPC分类号： F16D41/08 ,  F16D41/125

    摘要： A pressure control system configured to control a selectable one-way clutch (SOWC) includes a pilot valve and a SOWC actuator. The pilot valve is configured to produce a pilot signal and includes a first valve, which is a MEMS microvalve. The pressure control system may further include a regulating valve in fluid communication with the pilot valve and configured to receive the pilot signal. The regulating valve is further configured to output a control signal. The SOWC actuator is configured to select between operating modes of the selectable one-way clutch in response to one of the pilot signal and the control signal.

    摘要翻译： 构造成控制可选择单向离合器（SOWC）的压力控制系统包括先导阀和SOWC致动器。 先导阀被配置为产生导频信号并且包括作为MEMS微型阀的第一阀。 压力控制系统还可以包括与先导阀流体连通并被配置为接收导频信号的调节阀。 调节阀还被配置为输出控制信号。 SOWC致动器被配置为响应于导频信号和控制信号之一来选择可选单向离合器的操作模式。