Abstract
In particular with vehicles of the upper middle class and the upper class the acoustic climate in the interior is an important purchase criterion during all operating conditions. The vehicle manufacturers constantly reduced the noise level in the vehicle interior therefore in the last years. Here also the airborne sound, produced in the contact zone between tyre and roadway, must be considered, because it forms the noise impression in the vehicle interior considerably. In this paper an experimental method is presented, with which the Research Institute of Automotive Engineering and Vehicle Engines Stuttgart (FKFS) can quantitatively determine this noise entry. With the new patented test stand method a contribution is made to an efficient vehicle development process, which makes a total acoustic optimisation possible on test stand conditions. Road tests are reduced. At the same time the well-known disadvantages by acoustic chassis dynamo meter test benches are avoided.
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