초록 ▼

There is described a sound-insulating power vehicle part which includes a shaped outer sheet and an acoustically effective inside packing which together form an inherently stable lightweight composite part. To obtain this, a thermosetting plastic is used for the outer sheet while the inside packing

There is described a sound-insulating power vehicle part which includes a shaped outer sheet and an acoustically effective inside packing which together form an inherently stable lightweight composite part. To obtain this, a thermosetting plastic is used for the outer sheet while the inside packing is formed of a fiber-resin fleece, which is only slightly compacted in an acoustically effective main area and is closely compacted in its stabilizing areas.

대표청구항 ▼

Inherently stable self-supporting composite part for engine hoods for acoustic screening of noise sources, comprising: a shaped outside sheet of thermosetting plastic material and having an inside form and an inner surface; a noise-insulating inside packing fastened directly to the outside sheet, wh

Inherently stable self-supporting composite part for engine hoods for acoustic screening of noise sources, comprising: a shaped outside sheet of thermosetting plastic material and having an inside form and an inner surface; a noise-insulating inside packing fastened directly to the outside sheet, which inside packing has a continuous inner surface opposite said outside sheet inner surface, and where said inside packing is adapted corresponding to the inside form of the outside sheet and has countersunk deformations, which together with the outside sheet form open acoustically effective hollow spaces between said outside sheet inner surface and said inside packing continuous inner surface; the inner packing comprising a fiber fleece adhered with a phenolic resin, and covered with a fiber mat in direct contact with said fiber fleece; and said outer sheet and said inside packing cooperating to form a self-supporting structure, independent of the engine hood.