The present disclosure relates to a noise shield arrangement for a vehicle comprising a noise shield structure arranged to, at least partly, encapsulate a sound generating structure of the vehicle, wherein the noise shield structure is formed by an acoustic isolating material and comprises a first surface arranged to face the sound generating structure, and a second, oppositely positioned surface arranged to face away from the sound generating structure, wherein the noise shield arrangement comprises at least one thermally conductive element extending through the noise shield structure between the first surface and the second surface.

The present invention provides an engine cover that can be manufactured easily and at a lower cost and has an attachment member that is high in quality and may not easily fall off. The engine cover has a cover body made of urethane foam, a skin layer disposed on a surface of the cover body, and an attachment member made of an elastic body and integrally molded with the cover body. The attachment member has a recess into which an attachment pin provided to project from an engine member is fitted, and a sealing portion that is provided to project at least one of the opening end surface of the recess and the side surface of the opening end part of the recess and that suppresses entry of a foamed urethane resin material that forms the cover body into the recess during integral molding.

The invention relates to a panel with a porous shell and a spring layer, part of which enters the shell and produces an integrated sealed barrier. The foam of the shell is an integral skinned foam and the shell has a core with a substantially homogenous density and a porous skin. The overall density of the shell is between 150 and 350 kg/m3. The skin thickness is between 0.3 and 2 mm and has a permeability such that a 2 mm thick foam strip cut into the shell and integrating the skin exhibits air flow resistance of between 250 and 2000 N.s.m−3.

High-temperature polymer aerogel composites, associated materials, associated methods of manufacture, and applications of polymer aerogel composites including engine covers comprising aerogel materials are generally described.

Sound absorbing liner for the engine bay of a vehicle comprising at least one fibrous layer consisting of fibers and a thermoset binder thermally moulded to form the liner characterised in that the fibers comprises thermoplastic side by side bicomponent fibers and wherein the sides differ such that the fiber has a frizzy or curved shape.

Provided is a vehicle front structure capable of, without breaking a lid provided at a thermal insulating cover, reliably closing a bonnet and the lid even if an attempt is made to close the bonnet prior to closing the lid. In the present invention, a thermal insulating cover 10 including a lid 30 that covers the upper side of an engine in an openable and closable manner is provided below a bonnet 1 that covers the upper side of an engine room in an openable and closable manner; the lid 30 is provided with, in the vehicle front-rear direction, a hinge fulcrum 36 on the same rear end side as a hinge fulcrum 4 of the bonnet 1 and is openable and closable independently of the bonnet 1; and the lid 30 includes locking means 40 that is locked to the bonnet 1 when the lid 30 is open and is released from the locking in conjunction with a closing operation of the bonnet 1.

A method and apparatus for noise reduction in a semi-truck tractor. The semi-truck tractor has hood cowling that is carried on an upper hood support mounted to a firewall of the semi-truck tractor. The invention includes applying a resilient sleeve to the upper hood support to eliminate a noise generated by vibration of the hood cowling when supported by the upper hood support. The resilient sleeve has an opening at a proximal end of the sleeve. The sleeve is dimensioned to surround an exposed face of the upper hood support when mounted to the firewall. The resilient sleeve provides a low friction barrier between the hood cowling and the upper hood support with the hood cowling in a closed position and supported by the upper hood support.

A noise reflector configured to reduce engine sound passing below a side member of a vehicle and leaking laterally from the vehicle. The noise reflector is disposed on a lower side of a lower surface of the side member, has a sound reflective surface tilted from a vertical direction to be directed downward as being gradually laterally distant from an engine, and is configured to reflect downward engine sound received by the sound reflective surface and cause the engine sound thus reflected to interfere with engine sound passing below the side member.

An automotive vehicle soundproofing part having a body that includes a plurality of interlaced and/or bonded fibers. The body includes, in its thickness: a porous upper region of granular elements dispersed between the fibers; and a porous lower region with no dispersed granular elements, or formed of a concentration of dispersed granular elements lower than the concentration in dispersed granular elements of the porous upper region. The porous upper region has an air passage resistance at least 100 N.Math.m.sup.−3.Math.s greater than the air passage resistance of the porous lower region.

A vehicle includes an internal combustion engine, a supercharger placed behind an internal combustion engine, and a first insulator and a second insulator covering the supercharger. The first insulator is provided between the internal combustion engine and the supercharger and covers the supercharger from its front side. The second insulator covers the supercharger from its upper side, its rear side, and its lower side. An upper edge of the first insulator and an upper edge of the second insulator are positioned above and ahead of the supercharger and define a first opening. The first opening faces forward when the first opening is viewed from an inner region surrounded by the first insulator and the second insulator.