During the development of the Geely Hybrid System (GHS), which combines a 15T Miller engine with an Electric Motor (EM) integrated into a 7-speed Dual-Clutch Transmission (P2.5), several hybrid-specific Noise, Vibration, and Harshness (NVH) issues have been encountered.The technology used, the system features, and the hybrid operating modes are analyzed. Changes within driving modes and their transitions are among the new challenges faced by NVH and system engineers [1, 2, 3]. The lack of engine combustion noise masking during electric drive and hybrid mode brings new requirements for gear design and structural integrity. These requirements ensure the system is robust and insensitive to the excitation. Attachment points and its dynamic stiffness are important to prevent structure-borne frequency content of gear whine and EM magnetic noise being transmitted to the vehicle cabin via powertrain mounts. Idle speed selection has also become an important requirement to keep a suitable NVH comfort.This paper exposes the main challenges, root causes, and countermeasures applied during pure electric mode and combustion engine idle speed selection in order to create a competitive and refined hybrid propulsion system.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Geely Hybrid System’s Noise, Vibration, and Harshness Development


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Peng, Guomin (Autor:in) / Su, Hang (Autor:in) / Wang, Hao (Autor:in) / Hu, Junfeng (Autor:in) / Garanto, Victor Manuel (Autor:in) / Geng, Zhirong (Autor:in)

    Kongress:

    Automotive Technical Papers ; 2020



    Erscheinungsdatum :

    01.07.2020




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Geely Hybrid System’s Noise, Vibration, and Harshness Development

    Garanto, Victor Manuel / Geng, Zhirong / Hu, Junfeng et al. | British Library Conference Proceedings | 2020


    Noise, Vibration, Harshness

    Morello, Lorenzo / Rossini, Lorenzo Rosti / Pia, Giuseppe et al. | Springer Verlag | 2011


    Noise, Vibration and Harshness (NVH)

    Barton, David C. / Fieldhouse, John D. | Springer Verlag | 2024


    Viele Demütigungen. Geely

    Tema Archiv | 2006


    Controlling noise, vibration and harshness

    Alexander,D. | Kraftfahrwesen | 2003