Automotive HVAC (heating/ventilation/air-conditioning) systems contribute to acoustic discomfort caused by high interior noise levels especially at extreme climate conditions. Progress in vehicle acoustics has lead to more NVH (noise/vibration/harshness) optimisation efforts on air handling devices. In this context, a number of test and analysis techniques are being employed at Visteon Product Development Climate in order to investigate noise and vibration problems. Four such techniques are exemplarily presented in this paper. Sound power determination by sound intensity method produces reliable results and is advantageous for comparative tests because it represents a characteristic of the sound source, but it needs large expense on equipment and time. Sound power can also be determined with the reverberation chamber method. A comparison of these methods is being outlined. The vibrational behaviour of air handling systems is investigated with experimental modal analysis and running mode analysis. The application of running mode analysis should be restricted to periodic vibration because interpretation and documentation is difficult in case of random vibration. Modal analysis, using shaker excitation in case of larger structures, is appropriate to identify structural resonance. Both techniques are applicable for air handling units.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Comparsion of experimental NVH analysis techniques on automotive HVAC systems


    Weitere Titelangaben:

    Vergleich experimenteller NVH (Lärm/Schwingungs-) Analysetechniken bei HVAC (Heizungs/Belüftungs/Klima-) Anlagen in PKW


    Beteiligte:
    Schillemeit, B. (Autor:in) / Cucuz, S. (Autor:in)


    Erscheinungsdatum :

    2002


    Format / Umfang :

    5 Seiten, 11 Bilder, 2 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Comparison of experimental NVH analysis techniques on automotive HVAC systems

    Schillemeit,B. / Cucuz,S. / Visteon Deutschland,DE | Kraftfahrwesen | 2002


    Comparison of Experimental NVH Analysis Techniques on Automotive HVAC Systems

    Schillemeit, Balthasar / Cucuz, Stojan | SAE Technical Papers | 2002


    Direct Comparsion of Hover Prediction Workshop Results

    Duque, Earl P. / Toyoda, Atsushi / Burklund, Michael et al. | AIAA | 2016


    Propellant Comparsion for the Orion Service Module

    Mills, Gary / Mclean, Christopher / Riesco, Maureen | AIAA | 2008


    Analysis of the Switched Self-Balancing Comparsion Radiometer

    Ural, A. Turgay / Oranc, Hakki S. | IEEE | 1970