FRONT WALL Russian patent published in 2020 - IPC B60R13/08 

FIELD: machine building.

SUBSTANCE: group of inventions relates to a three-dimensionally deformed acoustically active front wall of a vehicle, as well as use thereof. Front wall includes at least one three-dimensionally deformed absorber from one or more formations, which is on one plane side along full surface or partially covered by blown layer, wherein blown layer contains nanofibers. Resistance to blowing of blowdown layer/layers is different or identical. Front wall also includes a bearing material open for flow, and the flow-bearing bearing material with the absorber and the blown layer includes several freely laying on each other or the pressed layers. Blown layer is located between several layers lying freely on each other or pressed and absorber. Thickness of front wall along its entire surface is equal or locally distinctly different; at that, nanofibre layer has blowing resistance locally localized in certain way as to structural element.

EFFECT: improved sound absorption.

8 cl, 1 dwg