Soundproof shield of rear engine drain pan of bus

The utility model relates to a sound insulation cover used in the oil pan of a rear engine motor coach, in particular to a trough structure which is positioned below the engine oil pan and adaptable to the shape of the engine oil pan; the sound insulation cover is a structure of multilayer materials...

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Bibliographic Details
Main Authors XUEDONG FAN, XIUFENG WANG, CHANGZHEN CAO
Format Patent
LanguageEnglish
Published 26.05.2004
Edition7
Subjects
PERFORMING OPERATIONS
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Summary:The utility model relates to a sound insulation cover used in the oil pan of a rear engine motor coach, in particular to a trough structure which is positioned below the engine oil pan and adaptable to the shape of the engine oil pan; the sound insulation cover is a structure of multilayer materials, which comprises a sound absorption layer, a damping layer and a sound insulation housing layer from inside outward in sequence. The sound insulation cover used in the oil pan of a rear engine motor coach provided in the utility model can block the noise generated by the oil pan of the engine and reduce the noise caused by the acceleration of an entire car by 1.5 decibels.
Bibliography:Application Number: CN2003230157U