Carcoustics Tech Center Gmbh

Efa Entwicklungsgesellschaft Für Akustik Mbh

Herbert Vollmert

Christian Gnädig

Albert Kallenberg

Hans Rudolf Czerny

The invention relates to an acoustically effective wheel house covering for vehicles, i.e. a wheel house covering which can reduce transmission of splash water noises in the passenger compartment of the vehicle and which can absorb the sound of rolling tires on a roadway, which wheel house covering comprises several layers of material. In order to improve the sound-absorbing effect of such wheel house coverings, it is proposed that the wheel house covering is formed of at least three air-permeable sandwiched layers of material () comprising a first textile material layer () facing the wheel housing, with the air permeability of said first textile material layer at a test pressure of 1 mbar ranging from 15 to 60 l/ms, and with the air permeability of a second textile material layer () arranged between the first () and third () material layers at a test pressure of 1 mbar ranging from 100 to 1500 l/ms, wherein the third material layer () is a textile material layer facing the tire, with the air permeability of said third material layer at a test pressure of 1 mbar ranging from 20 to 200 l/ms.

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Nettetal, Germany

Herbert Vollmert