Disclosed is a floor covering insulation for a motor vehicle with a multi-layer, preferably flocked, fibre insulation which, by a soft/smooth coupling layer to the wear surface, realises a sound insulation floor covering with improved acoustic and mechanical-physical properties, with a simultaneous reduction in weight if possible. Also disclosed is a process for manufacturing the sound insulation.

The invention relates to a trim assembly (1) of a motor vehicle, comprising a passenger compartment mat (3) extending between a visible face (4) and a reverse face (5), the mat (3) comprising a side contour surface (6) that joins said faces, the assembly (1) comprising a soundproofing element (7a), which is designed to occupy the space (8a) comprised between a floor (9a) of the passenger compartment (2) of the vehicle and the reverse side (5) when the mat (3) is installed in the vehicle, the assembly (1) comprising at least one trim element (13) designed to at least partially conceal a side rail (10a) of the vehicle. The mat (3) is designed to be positioned in the passenger compartment (2) of the vehicle with the contour surface (6) positioned opposite at least a portion of the side rail (10a), the trim element (13) being designed to conceal, when it is installed on the side rail (10a), a portion of the visible face (4) of the mat (3).

A underbody structure includes a tunnel brace (22) laid on a floor tunnel (18) of a vehicle. The tunnel brace (22) has a front convex section (71), a central groove section (72) and a rear convex section (73). The front convex section (71), the central groove section (72) and the rear convex section (73) are formed to have equal width dimensions with each other. The tunnel brace (22) is formed so as to have an M-shaped cross section by the front convex section (71), the central groove section (72) and the rear convex section (73). The tunnel brace (22) is formed such that the width dimension of the tunnel brace in the vehicle body forward/rearward direction has a maximum value at right and left end portions (22a, 22b) and has a minimum value at a central section (22c).

A planetary roller extruder section forms a feed part of an extruder. The planetary roller extruder has an internally toothed housing and an externally toothed central spindle disposed centrally within and at a distance from the housing. Planetary spindles are arranged to rotate in a void between the central spindle and the housing. Each planetary spindle has an external toothing meshing with both the housing and the central spindle. At least one planetary spindle has two axially spaced areas with less than a full set of teeth. Those axially spaced areas include a first area having a first number of teeth and a second area having a second number of teeth. The second number of teeth is less than a full set of teeth and more than the first number of teeth.

A flooring assembly comprising at least one first lofted lapped or airlaid bulk absorber layer 14 for acoustic absorption and compression resistance; at least one impedance layer 16 for one or more of acoustic impedance, compression resistance, and stiffness; at least one second lofted lapped airlaid bulk absorber layer 18 for acoustic absorption and compression resistance; and one or more optional densified fibrous air-flow resistive layers 12, 20.

Multilayer sound attenuating trim part for a vehicle, in particularly for a trim part or cladding used in the interior of a car, for instance as an inner dash or as part of the floor covering or for the exterior of a vehicle, for instance as a trim part or cladding in the engine bay area or as part of an under body trim part as well as to the method of producing a part, comprising at least two fibrous layers (10, 30) and at least one air permeable intermediate film layer (20) between the at least two fibrous layers, whereby all layers together have a variable thickness.

A right-hand drive conversion for a medium duty truck. The conversion process includes removal of dash assembly components and a sub-dash from the cab of a medium duty truck, such as a Freightliner M2. The conversion dash assembly includes a unitary dash and a plurality of brackets. The brackets are mounted to the left and right cab walls and the firewall.

An acoustic dash panel seal and assembly guide for a vehicle having a dash panel with a shaft aperture configured to receive a steering column shaft includes a guide portion having a converging wall that converges from a first end to an opposite second end, and a flange portion extending from the converging wall first end. The guide portion second end is configured to be disposed proximate to the dash panel shaft aperture, and the guide portion first end is configured to receive the steering column shaft therein during assembly of the vehicle. The converging wall is configured to guide the steering column shaft toward and through the guide portion second end to thereby guide the steering column shaft through the dash panel shaft aperture.

An automobile part (11) for acoustic screening makes it possible to insulate a passage of a through unit (10). The automobile part (11) for acoustic screening is a part (11) in a single piece with different areas of density and/or rigidity, such as to constitute lips (12, 13) at the through passage of the mobile unit (10).

A method of manufacturing insulation where carbon nanotubes are added to a polyurethane foam sheet widely used as an insulation substrate, where the cell structure of the foamed polyurethane foam is changed. Accordingly, the NVH performance in a middle and high frequency band of 1,000 Hz or more may be improved while minimizing an increase in weight (lighter than resin felt or glass wool). In particular, since at least one air layer is molded between two polyurethane foam sheets, noise passes through the at least one air layer in the middle of the polyurethane foam sheets when passing through the polyurethane foam sheets, where noise reduction performance may be further improved. In addition, since a mesh made of jute, along with the at least one air layer, is additionally provided between the two polyurethane foam sheets, the sound absorption performance of an insulation may be further improved.