In some embodiments of the present disclosure, an electric motor is used to generate correction torques to counteract unwanted torque pulses generated by an internal combustion engine during startup and/or shutdown. In some embodiments, the electric motor may be mounted to an accessory drive such as a power take-off mechanism or a front end accessory drive (FEAD). In some embodiments, the correction torques may be used to enforce an engine speed target profile for startup or shutdown, and may be determined using a feedback control loop based on the engine speed. The correction torques help to reduce or eliminate noise, vibration, and/or harshness (NVH) during startup and/or shutdown.


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    Title :

    SYSTEMS FOR REDUCING NOISE DURING ENGINE SHUTDOWN


    Additional title:

    SYSTEM ZUR GERÄUSCHVERMINDERUNG WÄHREND DER MOTORABSCHALTUNG
    SYSTÈMES DE RÉDUCTION DU BRUIT PENDANT L'ARRÊT D'UN MOTEUR


    Contributors:

    Publication date :

    2022-02-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



    SYSTEMS FOR REDUCING NOISE DURING ENGINE SHUTDOWN

    GERTY MICHAEL / VADLAMANI UDAY | European Patent Office | 2019

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    SYSTEMS FOR REDUCING NOISE DURING ENGINE SHUTDOWN

    GERTY MICHAEL D / VADLAMANI UDAY | European Patent Office | 2019

    Free access

    Two-Scale Command Shaping for Reducing NVH during Engine Shutdown

    Alyukov, Alexander / Wilbanks, Justin / Khattak, Mohid Muneeb et al. | British Library Conference Proceedings | 2020


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    Alyukov, Alexander / Wilbanks, Justin / Khattak, Mohid Muneeb et al. | British Library Conference Proceedings | 2020


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    Alyukov, Alexander / Wilbanks, Justin / Leamy, Michael et al. | SAE Technical Papers | 2020