A method of operating a drive train of a motor vehicle comprising a drive assembly which has at least a combustion engine and an automatic transmission with frictional shift elements positioned between the drive assembly and an output. When executing a traction downshift in which at least one frictional shift element of the automatic transmission is engaged and at least one shift element of the automatic transmission is disengaged, the method comprising the steps of engaging at least a first frictional shift element of the automatic transmission, disengaging at least a second frictional shift element of the automatic transmission, and reducing torque, provided by the combustion engine, while reducing the transfer ability of the second frictional shift element for executing the traction downshift.


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    Titel :

    Method for operating a drive train


    Beteiligte:

    Erscheinungsdatum :

    2016-07-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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



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