Sound absorption arrangement for use in wheel arch for attenuating operation noises of wheel of passenger car, has body-side and wheel-side wheel arch covering parts comprising perforation or perforated region

摘要

The arrangement (10) has body-side and wheel-side wheel arch covering parts (16, 18) comprising a perforation or a perforated region, where spacing, size or distribution of holes of the perforation is selected according to a frequency-range to be damped by the arrangement. Wall Spacing (d1) between the wheel arch covering parts is chosen according to a frequency-range to be damped by the arrangement. An open-porous sound absorption element (20) is arranged between the wheel arch covering parts and designed as open-porous foam or open-porous non-woven fabric.