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    Torque ratio bounds for automatic transmissions
    6.
    发明授权
    Torque ratio bounds for automatic transmissions 有权

    公开(公告)号：US11181191B1

    公开(公告)日：2021-11-23

    申请号：US17003339

    申请日：2020-08-26

    Applicant: FORD GLOBAL TECHNOLOGIES, LLC

    Inventor： Gangarjun Veeramurthy ,  Jason Meyer ,  Jeffrey A. Doering ,  Mark Steven Yamazaki

    IPC: F16H59/14 ,  F16H59/44 ,  F16H59/40 ,  F16H59/42 ,  F16H61/02 ,  F16H61/12 ,  F16H59/70 ,  F16H59/68

    Abstract: A vehicle includes a multi-speed transmission having an input shaft and an output shaft, an actuator, and a torque converter having an impeller selectively coupled to the actuator and a turbine coupled to the input shaft. A vehicle controller is programmed to, in response to an estimated torque ratio between the impeller and output shaft of the transmission being less than a minimum torque ratio between the impeller and output shaft of the transmission during a shift of the transmission, command torque to the actuator based on a driver-demanded wheel torque and the minimum torque ratio, and, in response to the estimated torque ratio exceeding the minimum torque ratio during the shift of the transmission, command another torque to the actuator based on the driver-demanded wheel torque and the estimated torque ratio.

    Bounded Vehicle Driveline Twist Estimating
    7.
    发明申请
    Bounded Vehicle Driveline Twist Estimating 有权
    有界车辆传动系统扭转估计

    公开(公告)号：US20130096789A1

    公开(公告)日：2013-04-18

    申请号：US13709444

    申请日：2012-12-10

    Applicant: Ford Global Technologies, LLC

    Inventor： Alexander P. McDonnell ,  Terry G. Feldpausch ,  Bradley D. Riedle ,  Jeffrey A. Doering ,  Peter D. Kuechler ,  John E. Rollinger ,  David H. Schmitt

    IPC: B60W10/04

    CPC classification number: B60W10/04 ,  B60W10/02 ,  B60W10/06 ,  B60W10/113 ,  B60W30/19 ,  B60W2710/023 ,  B60W2710/025 ,  B60W2710/0666 ,  B60W2710/1005 ,  F16D48/06 ,  F16D2500/1066 ,  F16D2500/1086 ,  F16D2500/50293 ,  F16D2500/50623 ,  F16D2500/70426 ,  F16D2500/7044

    Abstract: A method for controlling a vehicle driveline having a power source and a transmission clutch includes using a difference between two spaced locations in the subject vehicle driveline to determine driveline twist speed due to applied torque, using a product of driveline twist speed and a sampling interval to produce an estimated driveline twist from the sum of incremental changes in driveline twist that are between predetermined upper and lower magnitudes, producing, in response to a demanded wheel torque, a first signal that controls torque transmitted from the power source to the clutch during a lash crossing using the estimated driveline twist and the current driveline torque; and producing a second signal that controls clutch torque capacity such that clutch slip is produced during the lash crossing.

    Abstract translation: 一种用于控制具有动力源和变速器离合器的车辆传动系统的方法，包括使用本车辆传动系中的两个间隔位置之间的差异来确定由于施加的扭矩引起的传动系扭转速度，使用传动系扭转速度和采样间隔的乘积 从预定的上限和下限之间的传动系扭转的增量变化的总和产生估计的传动系扭转，响应于要求的转轮扭矩，产生在鞭打期间控制从动力源传递到离合器的扭矩的第一信号 使用估计的传动系扭转和当前传动系扭矩进行交叉; 并且产生控制离合器扭矩能力的第二信号，使得在间隙交叉期间产生离合器滑移。

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