Abstract:
The present invention provides composite muffler systems formed of a long fiber thermoplastic. Long fiber thermoplastic technology allows the fibers, to maintain a length sufficient to provide structural strength at lower fiber loading. The long fiber thermoplastic material for forming composite muffler systems also provides increased impact strength and creep resistance as well as chemical and thermal resistance. Mufflers molded with long fiber thermoplastics demonstrate improved dimensional stability as compared to known short fiber based moldings. One suitable muffler structure is a multi-piece muffler assembly including at least one long fiber thermoplastic shell section. In accordance with the present invention, the long fiber thermoplastic material and moldings may also be combined with over-molding of preforms of unidirectional or woven inlays, which provide local structural performance. The use of such preforms is particularly suited to use in the manufacture of high temperature, structural articles such as bumper muffler combinations.
Abstract:
The present invention relates to a muffler facia assembly including a muffler (200) with at least one thermoplastic shell formed into a facia assembly (202) on a motor vehicle. The facia may be any suitable body part of a motor vehicle, such as a bumper, a rocker panel, an air damn, a spoiler, a sideboard or a body module. An assembly in accordance with the present invention includes structural members to provide crash management features to increase the strength and impact resistance. In accordance with the present invention, the long fiber thermoplastic material and moldings may also be combined with over-molding of preforms of unidirectional or woven inlays, which provide local structural performance. The use of such preforms is particularly suited to use in the manufacture of high temperature, structural articles such as bumper muffler combinations.
Abstract:
Die vorliegende Erfindung betrifft ein Rohrelement und eine Verwendung für eine Abgasanlage eines Verbrennungsmotors, insbesondere für Abgasanlagen von Verbrennungsmotoren für Kraftfahrzeuge. Das erfindungsgemässe Rohrelement ermöglicht bei vereinfachter Herstellung eine optimale Ausnutzung der Eigenschaften des jeweils verarbeiteten Werkstoffs. Dies wird dadurch erreicht, dass die Wände (6-12) des Rohrelements (1) durch kraft- und formschlüssig miteinander verbundene Blechteile gebildet sind. Bevorzugt werden derartige Rohrelemente für die Abgasanlagen von Verbrennungsmotoren verwendet.
Abstract:
The invention concerns an exhaust volume (10) comprising a casing whereof at least one wall (12, 14) is made of a polymer material. The or each wall (12, 14) comprises, at least in a located zone of said wall, two layers (22, 24) of polymer material and a separating barrier (26, 40) interposed between the two layers (22, 24). The barrier is not chemically or physically bound to the two layers (22, 24).
Abstract:
A silencer (10) includes a polymeric casing (12) spaced from at least one inlet pipe and at least one outlet pipe by polymeric spacers (52). The polymeric spacers are made from a different material to that of the polymeric casing. The polymeric spacers are heat-resistant and have a higher melting point than the polymeric casing. The polymeric spacers are made of a softer material than the polymeric casing, and the polymeric spacers are capable of being deformed to accommodate irregularities in the shape of the inlet and outlet pipes.