ACOUSTIC SHIELD INTENDED TO BE INSTALLED UNDER A MOTOR VEHICLE ENGINE

The invention relates to an acoustic shield intended to be installed under a motor vehicle engine, the shield comprising a fibrous, porous, thermocompressed body, the constituent fibres of the body being distributed according to the following percentages by weight: between 15% and 25% sound-absorbin...

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Bibliographic Details
Main Authors LECOMTE, Alicia, CAPRON, Christophe, DELINSELLE, Eric
Format Patent
LanguageEnglish
French
German
Published 03.05.2023
Subjects
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PERFORMING OPERATIONS
PHYSICS
SOUND-PRODUCING DEVICES
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Summary:The invention relates to an acoustic shield intended to be installed under a motor vehicle engine, the shield comprising a fibrous, porous, thermocompressed body, the constituent fibres of the body being distributed according to the following percentages by weight: between 15% and 25% sound-absorbing fibres made of polyethylene terephtalate (PET) and with a titre of between 1.5 and 2 dtex; between 30% and 40% glass fibres to provide mechanical strength; between 40% and 50% polypropylene binder fibres ensuring a bond between the fibres of the body after they have melted.
Bibliography:Application Number: EP20200734989