With the growing market contribution of diesel passenger cars in Europe, it becomes more important to create a brand and market segment specific vehicle sound. Beside the usually considered pleasantness related topics like diesel knocking and high noise excitation, it is important to fulfill also the requirements regarding a dynamic vehicle impression. This impression is mainly influenced by the load dependency of the engine induced noise, which is reduced for diesel engines due to the missing throttle valve and the damping effect of the turbocharger and the diesel particulate filter. By means of a detailed noise transfer path analysis the contribution with dynamic potential can be identified. Furthermore the load dependency itself of a certain noise contribution can be strengthened, which allows for a dynamic sound character comparable to sporty gasoline vehicles. The sound design process starts with a benchmarking of the considered vehicle and powertrain relative to selected competitors or scatter bands, including objective quantities, which are directly related to the driver's subjective impression. In a second step the process proceeds with a detailed transfer path analysis by i.e. FEV-VINS (FEV Vehicle Interior Noise Simulation tool) to define a realistic virtual target sound. To achieve the overall interior sound targets, the targets are rolled down to single noise sources and transfer paths. Within all development steps the target sound and the current status of the vehicle sound are compared to identify where additional measures are necessary.


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    Title :

    Sound design for diesel passenger cars


    Additional title:

    Sound Design für Dieselfahrzeuge




    Publication date :

    2008


    Size :

    14 Seiten, 12 Bilder, 9 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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