A method for controlling an electric drive unit (EDU) having a motor-driven torque converter includes receiving a request signal indicative of a requested output torque of the EDU, and operating the motor at a target motor speed using the requested output torque. The target motor speed minimizes system losses while achieving the requested output torque. When the requested output torque remains below a calibrated threshold and a turbine speed is less than a corner speed of the motor, a torque converter clutch (TCC) transitions to or remains in a locked state. The controller commands the TCC to transition to an unlocked state to reach the target motor speed, thereby selectively enabling torque multiplication. A powertrain system includes a driven load and the EDU. A computer readable storage medium may include executable instructions for performing the method.


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    Title :

    MOTOR AND TORQUE CONVERTER CLUTCH CONTROL STRATEGY FOR ELECTRIC DRIVE UNIT HAVING MOTOR-DRIVEN TORQUE CONVERTER


    Contributors:
    BUCKNOR NORMAN K (author) / LEE CHUNHAO J (author) / LI DONGXU (author) / HAO LEI (author) / DUAN CHENGWU (author)

    Publication date :

    2023-06-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F16H Getriebe , GEARING



    Motor and torque converter clutch control strategy for electric drive unit having motor-driven torque converter

    BUCKNOR NORMAN K / LI JUNHAO / LI DONGXU et al. | European Patent Office | 2023

    Free access

    Motor and torque converter clutch control strategy for electric drive unit having motor-driven torque converter

    BUCKNOR NORMAN K / LEE CHUNHAO J / LI DONGXU et al. | European Patent Office | 2023

    Free access

    Centrifugal torque converter clutch

    Silberschlag,R. / Borg-Warner,US | Automotive engineering | 1984


    Centrifugal Torque Converter Clutch

    Silberschlag, Russell | SAE Technical Papers | 1984


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    MATSUOKA YOSHIHIRO | European Patent Office | 2023

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