Disclosed are a resin composite having excellent soundproofing and mechanical properties, and a molded product including the same. The resin composite may include a resin composition, porous particles and a reinforcing material, and the molded product including the same include no volatile organic compounds (VOCs). As consequence, displeasure caused by generation of the VOCs and exhaust of toxic gas during combustion may be reduced thereby being environmentally friendly. Further, the resin composite and the molded product including the same demonstrate sufficient mechanical strength and may thus be directly applied to a housing or the like of an apparatus which generates noise without introduction of any additional soundproofing material. For example, the resin composite and the molded product may include a specific content of the porous particles having pores having a specific size to secure an appropriate volume fraction and may thus efficiently and economically block noise transmission.

Methods and systems are provided for a heat shield. In one example, the heat shield is formed of a composite material, the heat shield configured to shield a component from radiated heat. The composite material is a mixture of aluminum particles dispersed in an elastomer matrix.

Provided is a sound insulation structure for an internal combustion engine that facilitates the assembly work, and minimizes the transmission vibrations and noises. The sound insulation structure for an internal combustion engine comprises a cover main body (21) disposed outside of a main body (10) of the internal combustion engine and covering at least a part of the engine main body, and a foam sound insulation member (22) made of a foam material and attached to an inner surface (21a) of the cover main body facing the engine main body. The foam sound insulation member covers a noise source (11) of the engine main body and abuts the engine main body or a component part (12, 14) attached to the engine main body at an outer periphery thereof so as to interpose the noise source. The engine main body or the component part includes a sound insulation wall (31-33) projecting therefrom so as to shield a junction part at which the foam sound insulation member abuts or adjoins the engine main body or the component part thereof and the sound insulation wall is covered by the cover main body.

Disclosed are an undercover for vehicles with high elasticity and rigidity and a method of manufacturing the same. The undercover for vehicles with high elasticity and rigidity may include a needle-punched nonwoven fabric having a multi-layer structure of felt layers including a first PET fiber and a low-melting-point PET fiber, and each of the felt layers may have improved tensile strength and have optimized fiber alignment, to thereby improve the binding between fibers, mechanical rigidity and elasticity, as well as to reduce the weight of components, improve durability and secure harmlessness and inline workability.

An engine room heat exhausting structure configured to discharge heat from an engine room, is provided, which includes an engine room accommodating an engine with cylinders lined up in a front-and-rear direction of a vehicle, a wheelhouse provided outside the engine room in a vehicle width direction, an exhaust emission control device disposed between the engine and the wheelhouse, a wheelhouse liner configured to protect an inner wall of the wheelhouse, a discharging part provided rearward of the exhaust emission control device and configured to discharge into the wheelhouse a part of air cooled the exhaust emission control device, and a guiding part provided to the wheelhouse liner and configured to guide the air discharged into the wheel house to underneath the vehicle in a rear part of the wheelhouse.

Methods and systems are provided for a heat shield. In one example, the heat shield is formed of a composite material, the heat shield configured to shield a component from radiated heat. The composite material is a mixture of aluminum particles dispersed in an elastomer matrix.

A work machine includes: a partition member provided with an intake port and an exhaust port and forming an engine room; an engine disposed in the engine room; a cooling fan disposed on an intake port side of the engine in the engine room; an exhaust pipe discharging exhaust gas from the engine; and an exhaust duct disposed in the engine room and having an inflow port into which air from the cooling fan flows, and an outflow port. At least a portion of the exhaust duct is disposed above the engine and has a facing surface facing the engine and a through-hole provided in the facing surface. At least a portion of the exhaust pipe is disposed in the through-hole. A gap is formed between an outer surface of the exhaust pipe and an inner surface of the through-hole.

Disclosed are systems and methods for coupling a first panel to a second panel via a fastener. The fastener having a cap, a shank, pair of wings, and one or more PIA-retention features. The shank defines a central longitudinal axis that is substantially perpendicular to the cap. The pair of wings is resiliently coupled to the shank at a distal end thereof. The pair of wings includes a first wing and a second wing, each angled away from the central longitudinal axis. In some examples, the one or more PIA-retention features can be a pair of whiskers resiliently coupled to the shank and angled away from the central longitudinal axis. Each of the pair of whiskers is substantially perpendicular to the central longitudinal axis. In other examples, the one or more PIA-retention features include a first fin resiliently coupled to and angled away from the first wing and a second fin resiliently coupled to and angled away from the second wing. The first fin and the second fin can retain the fastener relative to the first panel.

A sound-absorbing cover comprises a first sound-absorbing layer and a second sound-absorbing layer made of foam, a first skin layer of the first sound-absorbing layer and a second skin layer of the second sound-absorbing layer are layered in a state of being made to face each other, and an air layer is provided between the facing surfaces of the first skin layer and the second skin layer. The rigidity of the first skin layer of the first sound-absorbing layer is different from the rigidity of the second skin layer of the second sound-absorbing layer.

Systems and apparatuses include a hood for a machine including a noise inhibitor housing inhibiting transmission of noise in a horizontal plane from the machine, and a noise diffusive panel supported by the noise inhibitor housing and structured to release noise upward.