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In course of architectural change from combustion engine to purely electric vehicles, the requirements of underbody paneling are also changing. Battery protection requires new concepts which cannot easily be solved in a common way with conventional textile, large-area sound-absorbing panels. At the same time, the tires dominate the road noise, why new measures of noise-reduction are getting even more necessary. A possible alternative solution are absorbent bodies, which are attached to the transition area from the wheel arch lining to the underbody in front of and behind the wheels and which face to the sound source from the road surface and tires. The results of a current study on the exemplary implementation of such bodies and their effect on the exterior and interior noise of the vehicle will be presented.

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Application of Sound Absorbing Near Field Bodies to Reduce Tire-Road Noise

  • 会议论文

  • 发表日期：

    2025年

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  • Klaus Pfaffelhuber,
  • Bernard Zobec,
  • Johan Grebert,
  • Michael Scheinhardt,
  • Jan Horak

摘要

In course of architectural change from combustion engine to purely electric vehicles, the requirements of underbody paneling are also changing. Battery protection requires new concepts which cannot easily be solved in a common way with conventional textile, large-area sound-absorbing panels. At the same time, the tires dominate the road noise, why new measures of noise-reduction are getting even more necessary. A possible alternative solution are absorbent bodies, which are attached to the transition area from the wheel arch lining to the underbody in front of and behind the wheels and which face to the sound source from the road surface and tires. The results of a current study on the exemplary implementation of such bodies and their effect on the exterior and interior noise of the vehicle will be presented.