AUTOMOTIVE SOUND DAMPING SYSTEM AND WALL RELATED THEREWITH Russian patent published in 2014 - IPC B60R13/08 

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Proposed system incorporates basic spring layer, stiffening layer and one top porous resilient layer. Basic spring layer is made of porous resilient material and arranged opposite some surface of the carrier. Stiffening layer arranged over basic stiffening layer features weight per surface are unit making over 250 g/m². Top porous resilient layer is arranged on stiffening layer. The latter is made of dense porous material with air flow resistance over 2500 Nm^-3s, below 6000 Nm^-3s and varies from 3000 Nm^-3s to 5000 Nm^-3s. Carrier wall element is either floor, front bulkhead or wheel arch. Said element comprises support and above said system. Said support is the element of carrier body confining said surface. Portion of said basic spring layer is arranged at some distance from said support to make air ply. Air ply medium thickness exceeds mid thickness of stiffening layer.

EFFECT: decreased weight, better sound damping.

15 cl, 14 dwg