A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a skip fire manner. A smoothing torque is determined that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the skip fire firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.


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    Titel :

    Noise, vibration and harshness reduction in a skip fire engine control system


    Beteiligte:
    SERRANO LOUIS J (Autor:in) / YUAN XIN (Autor:in) / PARSELS JOHN W (Autor:in) / PIRJABERI MOHAMMAD R (Autor:in) / WILCUTTS MARK A (Autor:in) / NAGASHIMA MASAKI (Autor:in)

    Erscheinungsdatum :

    2021-10-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / 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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