| 摘要 |
A self-supporting, heat and sound insulating cowling for internal-combustion engines of motor vehicles comprises a plurality of layers which have been compression-moulded under the effect of pressure and heat to form zones of defined- predetermined compaction. The cowling comprises, on the engine side, a thicker, heat insulating and sound insulating layer (2) of an inorganic fibrous material, which is covered by a layer (4) of carbon-fibre material. A thicker layer (3) of inorganic fibrous material, facing away from the engine, cures to form a self-supporting support layer. 25 to 35% by volume of it consists of 25 to 50 mm long glass fibres and the rest consists of either a high temperature resistant polyester resin and mineral filler or polypropylene. This support layer may be covered on the bodywork side by a layer (5) of non-woven polyester or polyacrylonitrile fibres. <IMAGE> |
