Abstract: A control device for the throughput in a conduit portion a is provided. The device comprises a valve or a flap composed of a body mounted on a rotary support shaft and being displaceable between a position of maximum closure and a position of minimum closure by pivoting about said shaft. The device is characterised in that at least one shape or structure (4,4?) which is at least partially obstructive, by projecting into the internal passage of said conduit portion (1) and locally reducing the passage section thereof, is present in the region of the internal face of the wall of said conduit portion. The device includes at least one cooperating surface zone (5) which intimately mates with the shape of at least one part of the imaginary surface swept by at least one segment of the external peripheral edge (6) of the body (2) of the valve or flap when pivoted.

Abstract: An air inlet module incorporating, in one structural unit, on the one hand, a supply manifold, on the other hand, an exhaust gas reinjection circuit and, finally, a gas/liquid heat exchanger designed to cool the exhaust gases, the module consisting of a sealed assembly of at most four parts, namely, a first part comprising the inlet manifold, the outlet manifolds, a portion of the supply conduit, and a hollow body forming the tank of the exchanger, a second part comprising the many circulation manifolds and a support body for assembling said manifolds in the tank, and a third part of which one portion forms a cover for the hollow open container and comprising several conduit portions forming at least partially the exhaust gas circulation circuit and conveying these gases to the inlet manifold, also incorporated in said third part.

Abstract: A multifunctional module for internal combustion engine, forming a structural assembly and incorporating the functions of exhaust gas cooling and regulation, at least in part, of the circulation flows in said engine's cooling circuit, comprising a first functional unit incorporating, on the one hand, a part at least of an exhaust gas recirculation circuit and a heat exchanger for cooling the gases, preferably of elongated form, together with at least one gas flow regulation/diversion component, and, on the other hand, a part at least of the engine cooling circuit, with at least the water outlet casing and a thermostatic component for regulating the flow therein; the structural assembly comprises a second functional unit in the form of a substantially flat, plate-shaped body, consisting of a stiffening and fixing plate for the first functional unit and a thermal isolation interface between the first functional unit and the engine block; the plate-shaped body comprises on one of its faces sites for fitting and

Abstract: A method of controlling a device comprising an adjusting component which is associated in its operation with a means for actuating the movable element of said component, a means for sensing the actual position of the movable element and a control means, characterised in that it comprises, at the beginning of any operating cycle, initialising the adjusting device by determining the “fully clsoed” and “open to the maximum” positions of the movable element (1?), and indexing the control means (5) and setting its parameters accordingly then, during the consecutive running of the operating cycle, continously or at regular intervals putting the open/closed state of the adjusting component (1?) under the control of the reference signal (SIGN), by adjusting the control signal (IN) which is applied according to the result of comparing the indicated positions of the movable element (1?), obtained firstly from the reference signal (SIGN) and secondly from the (OUT) signal delivered by the sensing means (4).

Abstract: The present invention relates to an intake manifold or distributor for a thermal engine constituted by at least two parts (1, 1?) assembled together, in particular two parts made from thermoplastic material assembled by vibration welding and comprising an intake or plenum chamber connected, for fluidic communication, to intake pipes opening into the chamber. Intake manifold or distributor for a thermal engine characterized in that it comprises an additional attached piece (4) comprised, on the one hand, of a main body forming a support and fitting plate and, on the other hand, of pipe portions (6, 6?) produced in one piece with said body (5) and defining at least the inlet orifices (6, 6?) of said pipes (3), said attached piece (4) being positioned and, if applicable, fixed, prior to assembly of said at least two parts (1, 1?) forming said manifold or distributor on or in one of these parts.

Abstract: The present invention concerns an air filter unit for a vehicle with an internal-combustion engine. Air filter unit for a vehicle with an internal-combustion engine, having an air filter and a hollow case containing and holding the air filter in position, characterized in that said case is composed, as the one hand, of a lower part forming an open receptacle for said filter and made up of at least two elementary parts assembled at complementary formations of their edges placed in contact and, on the other hand, of an upper part forming a cover and closing the upper part of the lower part, said upper and lower parts being assembled, with insertion of a seal or a packing, at the lower peripheral edge of said upper part and at the peripheral edge of the opening of the lower part.

Abstract: The present invention relates to an intake manifold or distributor for an air feed circuit for an internal-combustion engine comprising, on the one hand, an intake or plenum chamber of elongate shape and provided at one of its longitudinal ends with an intake aperture and, on the other hand, at least two pipes laterally connected to said chamber, said pipes extending at least partially around said intake chamber from their inlet apertures opening therein and having a curved structure over at least a portion of their length.

Abstract: The present invention relates to a water-type cooling unit for a vehicle equipped with an internal-combustion engine, the unit being connected via a main circulation loop formed by appropriate conduits, in particular to at least one radiator for cooling the water or the similar coolant and to the circuits for cooling the cylinder block and the cylinder heads. Unit, characterized in that it comprises a central module in the form of a body made of thermoplastic material in which there are, in particular, mounted or partially molded a water-circulating pump and a flow-regulating valve disposed in the circulating loop, preferably between the aforementioned cooling circuits and the radiator.

Abstract: The present invention relates to a flap valve device and a regulation assembly comprising such devices. A pivoting flap valve device has a flap body substantially in the form of a disc mounted on a support and control axle, for the regulation of the circulation of a fluid, particularly a liquid, between an upstream conduit portion and a downstream conduit portion. The flap body (2) is mounted centered on the axle (3), in that the two conduit portions (4 and 5) are axially offset relative to each other and in that the internal surfaces (7, 7′) of the opposed offsets resulting from the axial offset or non-alignment of the portions (4 and 5) constitute bearing surfaces (7, 7′) for two complementary seat portions (6, 6′) for the flap body (2), located on opposite sides of the axle (3) carrying the flap body (2).

Abstract: The present invention concerns an air filter unit for a vehicle with an internal-combustion engine.

Abstract: The present invention has for its object an intake manifold or distributor with several pipes. Intake manifold or distributor (1), particularly of thermoplastic material, obtained by the assembly of at least two previously produced constituent parts (2 and 3) and comprising several intake pipes (4) formed with said manifold or distributor, characterized in that each intake pipe (4) is at least partially, and preferably totally, constituted by the coaction of at least one wall portion (6, 6′; 7, 7′) of at least one of its constituent parts (2, 3) with the structural insert (8) mounted in one of said parts (2, 3) before their mutual assembly, held in position between them after their assembly and forming at least a portion of the wall of the pipe (4) in question.

Abstract: The present invention relates to a water-type cooling unit for a vehicle equipped with an internal-combustion engine, the unit being connected via a main circulation loop formed by appropriate conduits, in particular to at least one radiator for cooling the water or the similar coolant and to the circuits for cooling the cylinder block and the cylinder heads.

Abstract: The present invention relates to a flap valve device and a regulation assembly comprising such devices. A pivoting flap valve device has a flap body substantially in the form of a disc mounted on a support and control axle, for the regulation of the circulation of a fluid, particularly a liquid, between an upstream conduit portion and a downstream conduit portion. The flap body (2) is mounted centered on the axle (3), in that the two conduit portions (4 and 5) are axially offset relative to each other and in that the internal surfaces (7, 7′) of the opposed offsets resulting from the axial offset or non-alignment of the portions (4 and 5) constitute bearing surfaces (7, 7′) for two complementary seat portions (6, 6′) for the flap body (2), located on opposite sides of the axle (3) carrying the flap body (2).

Abstract: An inlet manifold/throttle valve chamber unit for a vehicle comprising a heat engine, is characterized in that a module (2) for adjusting the passage cross section is attached in the region of the fresh air feed orifice (3) of an inlet manifold (1) so as to form an integrated inlet manifold/throttle valve chamber unit.