A method is provided for operating a drive unit for a hybrid vehicle. The drive unit includes a drive assembly with an internal combustion engine, and an electric motor, and a transmission featuring several sub-transmissions shifting between the drive assembly and an output. Through a planetary transmission, the electric motor is coupled to an input shaft of a first sub-transmission and an input shaft of a second sub-transmission shifted in parallel to the first sub-transmission. Through a frictional-locking separating clutch, the internal combustion engine couples to the input shaft of the first sub-transmission and, if the separating clutch is locked, is coupled to the same element of the planetary transmission together with the input shaft of the first sub-transmission. A positive-locking or frictional-locking bypass shift element works together with the planetary transmission such that, with a locked bypass shift element, a torque-proof connection between the electric motor, the input shaft of the first sub-transmission, and the input shaft of the second sub-transmission, and thus a mandatory equality of rotational speed between the same, exists. With an open bypass shift element, this torque-proof connection and thus the equality of rotational speed, do not exists. For the execution of a power shift, prior to the engagement of a positive-locking shift element to be locked for the power shift, the frictional-locking separating clutch is brought into slip for the decoupling of the inertial mass of the internal combustion engine.


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    Titel :

    Method for operating a drive unit for a hybrid vehicle


    Beteiligte:

    Erscheinungsdatum :

    2016-10-11


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    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 / F16H Getriebe , GEARING



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