A sheet for an automobile interior/exterior material provides excellent sound absorption performance. A sheet for an automobile interior/exterior material, which comprises a nonwoven fabric layer in which a fiber weight is 220 g/m.sup.2 to 1,000 g/m.sup.2 and an olefin resin layer laminated on one surface of the nonwoven fabric layer. The formation amount of the olefin resin layer is within a range from 100 g/m.sup.2 to 500 g/m.sup.2, the melt flow rate of the olefin resin is within a range from 1 g/10 minutes to 90 g/10 minutes. The nonwoven fabric layer is impregnated with at least a part of the resin in the olefin resin layer, the olefin resin layer is provided with a plurality of micropores. The sheet for an automobile interior/exterior material as a whole has air permeability of 1 to 60 (cm.sup.3/cm.sup.2.Math.second) in the thickness direction.

The present teachings generally relate to an acoustic panel including a backing layer, honeycomb core attached to the backing layer, a mesh layer attached to the honeycomb core, and a face sheet including a flexible acoustic fabric face sheet attached to the mesh layer. The acoustic fabric face sheet can provide improved sound dampening characteristics over, for example, a perforated face sheet, and at a lower manufacturing cost, weight, and a simplified manufacturing process. The acoustic fabric face sheet can be or include a flexible woven and/or knitted fabric including a polymer such as an aromatic polyamide that includes a meta-aramid fiber, or a fiberglass fabric.

A motor vehicle soundproofing part includes a base body made from foam or felt and a surface layer, applied on the base body. The base body has shaping reliefs and the surface layer includes a plurality of through perforations and airtight regions between the perforations. Each perforation has a transverse dimension smaller than 1.5 mm, advantageously smaller than 1 mm and, in particular, between 0.1 mm and 0.5 mm.

A structural element of a motor vehicle has a cavity and an elongate insulating element arranged in the cavity and is formed such that a longitudinal axis of the insulating element is oriented substantially parallel to a longitudinal axis of the cavity and the insulating element comprises an expandable material, which is arranged and/or configured in such a way that the insulating element fills the cavity completely along the entire length of the insulating element when the expandable material is in the expanded state.

A space management system for managing an environment of a shared space that is arranged inside a mobile body and can be used jointly by a first occupant and a second occupant comprises a control mode determining unit configured to determine a control mode serving as a control target of an adjusting unit configured to adjust the environment of the shared space. The control mode determining unit is configured to determine enabling or disabling of an independent control mode for independently adjusting an environment of a first subspace, which is a part of the shared space, where the first occupant is present and an environment of a second subspace, which is a part of the shared space, where the second occupant is present.

Disclosed are a polyester hollow fiber with excellent sound absorption and a method of manufacturing the same. The polyester hollow fiber may have a hollow ratio of about 27% to 35% compared to the cross-sectional area, and the value of the following equation (1) may be about 1.5 or greater, and the hollow in the cross-section preferably may be a three-lobed type and preferably may correspond to the following equation (1).

[00001]$\begin{array}{cc}\frac{P}{\sqrt{4\Pi A}}& \left(1\right)\end{array}$

In the above equation (1), A is the cross-sectional area (μm.sup.2) of the fiber, and P is the length (μm) around the cross-section of the fiber.

A headliner system includes a plurality of segments connected together and outlining a central opening and a central section received in the central opening. The central section is selected from a group of central sections consisting of a multisection panel incorporating an overhead airbag grid system, a panel incorporating a fold down display panel and a panel incorporating a pull down divider.

An interior trim part (10) for cladding an inner side of a motor vehicle body has a cladding panel (12) forming an inner surface (14) and delimiting a passenger compartment. A flexible insulation layer (18) is fastened to a rear surface (16) of the cladding panel (12) that points away from the inner surface (14). The cladding panel (12) has a protruding fastening element (22) projecting through an opening (20) of the insulation layer (18). The fastening element (22) has a lateral receiving opening (28) and the insulation layer (18) has a retaining strip (32) unconnected to the rear surface (16). The retaining strip (32) is inserted into the receiving opening (28). A situation in which the fastening element (22) is covered by the extended insulation layer (18) is avoided by the retaining strip (32) inserted in the lateral receiving opening (28).

Systems, apparatus and methods to implement sectional design (e.g., in quadrants) of an autonomous vehicle may include modular construction techniques to assemble an autonomous vehicle from multiple structural sections. The multiple structural sections may be configured to implement radial and bilateral symmetry. A structural section based configuration may include a power supply configuration (e.g., using rechargeable batteries) including a double-backed power supply system. The power supply system may include a kill switch disposed on a power supply (e.g., at an end of a rechargeable battery). The kill switch may be configured to disable the power supply system in the event of an emergency or after a collision, for example. The radial and bilateral symmetry may provide for bi-directional driving operations of the autonomous vehicle as the vehicle may not have a designated front end or a back end.

A thermal barrier material for use in shielding components of a vehicle from hot exhaust surfaces includes 35 to 53% of a plurality of clays by weight and a remainder including magnesium silicate, alumina trihydrate, alumino-borosilicate glass, rock wool, basalt fiber, acrylamide copolymer coagulant, acrylic latex, fatty alcohol alkoxylate, or anionic polyacrylamide. A sample of the thermal barrier material, when exposed to a temperature of 400° Celsius, produces smoke having a density less than 5 g/cm.sup.3 as measured according to the ISO 5659-2:2006(E) standard.