Airbag pressure determines the restraint effect during a vehicle crash. The pressure required to restrain the occupant depends on pre-crash detection, collision parameters and the occupant’s mass and position. This work modulated airbag pressure for optimum safety using a novel airbag control valve for cold-gas inflators. This paper evaluates the valve’s stationary and dynamic performances for Helium by 3D flow simulations using a pressure-based solver in ANSYS Fluent® and SAE J2238 laboratory tank tests. The predicted and measured tank pressures for the fully open (stationary) valve were agreed by an average 93.73% with an excellent correlation (correlation coefficient, R = 0.9995). For the first dynamic operation with 10 ms switching time, the results agreed by 92.78% with R = 0.9975. In the second test with 30 ms switching, 83.67% agreement was observed with R = 0.9893. The research concluded that the valve modulates the bag pressure and is implementable in vehicles.


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    Titel :

    3D simulations and laboratory experiments to evaluate a dynamic airbag valve


    Beteiligte:
    Shirur, Naveen (Autor:in) / Birkner, Christian (Autor:in) / Bleeck, Matthias (Autor:in) / Forster, Andreas (Autor:in) / Deserno, Thomas M. (Autor:in) / Henze, Roman (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2024-03-03


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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