Abstract: A silencing apparatus to be fitted between a first air or fluid intake duct (1) and a second air or fluid exhaust duct (2), said silencing apparatus being notably fitted between an engine turbine and a thermal exchanger and including a cylindrical main hollow body (3), a cylindrical input connection (4) and a cylindrical output connection (4′) with one or a plurality of straight sections smaller than the straight section of said main body (3), and at least one partitioning part (8) defining with the internal surface of said main hollow body at least two toric chambers (9, 10).

Abstract: A thermal exchanger to be implemented in the air intake circuit of an internal combustion engine, notably in an intake splitter which includes a hollow plastic body (1) that defines an air intake chamber (2), an entry (3) for air and one or many exits which communicate with the head of the engine. The thermal exchanger constitutes of a chamber (5), at least part of which is in a plastic material, and which features a first opening towards the outside, a second opening (7) that communicates with the intake chamber (2), a third opening (8) that communicates with a canal (9) which supplies coolant fluid, a fourth opening (10) that communicates with a canal (11) which carries the coolant fluid out, a metallic assembly that forms the hot part of the exchanger.

Abstract: A sealing-tight pipe with acoustic damping for the transport of gaseous fluids, inter alia for the admission of air for combustion into a motor vehicle heat engine, characterised in that it comprises a first layer 1 of a porous material which is permeable to the gaseous fluids and a second layer 4 consisting of a thin film, attached to the first layer but not adhering thereto, of a flexible fluid-tight material which is mechanically deformable reversibly.

Abstract: A pipe for the ducting of gaseous fluids, notably in cars, characterised in that it includes a porous interior tube (1), permeable to gaseous fluids and likely to lessen noise transmission, and an exterior tube (2), which is essentially rigid and forms an envelope distant from the interior tube, in a material essentially non-permeable to gaseous fluids.

Abstract: A pipe for carrying gaseous fluid, more particularly in motor vehicles, and particularly for the admission of air for combustion to the engine or for ventilation of the vehicle interior, including an outer layer (1) of a fluid-tight flexible material and a non-woven fibrous inner layer (2) secured to the outer layer (1).