Today, the number of downsized engines with two or three cylinders is increasing due to an increase in fuel efficiency. However, downsized engines exhibit unbalanced interior sound in the range of their optimal engine speed, largely because of their dominant engine orders. In particular, the sound of two-cylinder engines yields half the perceived engine speed of an equivalent four-cylinder engine at the same engine speed. As a result when driving, the two-cylinder engine would be shifted to higher gears much later, diminishing the expected fuel savings.This contribution presents an active in-car sound generation system that makes a two-cylinder engine sound like the more familiar four-cylinder engine. This is done by active, load-dependent playback of signals extracted from the engine vibration through a shaker mounted on the firewall.A blind test with audio experts indicates a significant reduction of the engine speed when shifting to a higher gear. In the blind test, experts favored the interior sound of the proposed sound generation system and perceived better interaction with the vehicle.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Sound Optimization for Downsized Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Sontacchi, Alois (Autor:in) / Kranzler, Christian (Autor:in) / Zotter, Franz (Autor:in) / Frank, Matthias (Autor:in) / Brandl, Stephan (Autor:in)

    Kongress:

    8th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference ; 2014



    Erscheinungsdatum :

    30.06.2014




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Sound Optimization for Downsized Engines

    Sontacchi, Alois / Frank, Matthias / Zotter, Franz et al. | Springer Verlag | 2015


    Sound Optimization for Downsized Engines

    Sontacchi, A. / Frank, M. / Zotter, F. et al. | British Library Conference Proceedings | 2014


    Ring Pack for Downsized Spark Ignition Engines

    de Sa, L. / Ferrarese, A. / Society of Automotive Engineers | British Library Conference Proceedings | 2011



    Efficient Exhaust Silencers for Downsized Gasoline Engines

    Krueger, J. / Pommerer, M. / Conrath, M. | British Library Conference Proceedings | 2012