| 摘要 |
For the formation of a sound insulating and absorbing cavity ( 8 ) within an engine compartment ( 1 ), said engine compartment ( 1 ) is partitioned by means of a lightweight engine compartment partitioning layer ( 7 ). Said partitioning layer ( 7 ) can be made of several sections and forms an essentially cohesive surface within the engine compartment ( 1 ). In a preferred embodiment of the invention this partitioning layer ( 7 ) consists of a carrier layer ( 12 ) and a sound absorbent layer ( 13 ) and may comprise first and second water and oil repellent layers ( 14, 15 ). The cavity ( 8 ) created by this partitioning layer ( 7 ) leads to a substantive increase in transmission loss. |
