| 摘要 |
A method and a device for reducing the internal noise of a vehicle produced during the rolling of the tire are described The device comprises a plurality of elements made from open-cell expanded materials, for example expanded polyethylene, or from fibers of the mineral or textile type. These elements are introduced into the tire during its mounting on the corresponding rim and are placed in the absence of restraints in the annular cavity delimited between the tire and the rim. As a result of the rolling of the wheel, the various elements, under the action of the centrifugal force, are moved and pushed in a random way towards the inner surface of the tire, producing a ragged surface whose presence, in combination with the open cells of said elements, modifies and damps the acoustic waves generated inside the tire during the rolling of the tire.
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