Abstract: The invention concerns a front panel comprising a top metal section extending over the whole width of the panel and provided with means for fixing it to the motor vehicle structural elements, and at least a central jamb including means to be fixed to a hood lock and a cowl-beam of the vehicle. The section and the jamb are mechanically interlocked to form a single-unit assembly, said assembly being overmoulded with a plastic element of the front panel.

Abstract: A motor vehicle combined heat exchanger has a tube bank linked to two manifolds and divided into an oil cooler having tubes for oil, and a condenser having tubes for a cooling fluid. The two types of tubes are different and possess respective hydraulic diameters related by the following inequality: 0.8 mm2≦DHa×DHb≦3.00 mm2 where the hydraulic diameter (DH) of a tube is defined by the formula DH=4S/P, in which S designates the area of the internal cross-section of the tube (expressed in mm2) and P the internal perimeter, or “wet perimeter”, of the tube (expressed in mm).

Abstract: A device for regulating the cooling of a motor-vehicle internal-combustion engine has a fluid-cooling circuit coupled to a fluid pump feeding an installation for heating and/or air conditioning the passenger compartment of the vehicle, with adjustable air-heating parameters, including an air heater. It also has a device for establishing an engine-starting state on the basis of chosen conditions and a device which acts in this starting state for either stopping the pump if the heating demand is below a certain threshold or else for driving the pump as a function of a saturation rotational speed.

Abstract: Heat exchanger for recovering heat from the exhaust gases of a motor vehicle, in which the exhaust gases circulate between two manifolds delimited by respective caps and by the end walls of a cylindrical casing, passing in tubes which are elongated in the axial direction in the casing. The caps are produced by stamping from a thin sheet metal, which leads to a reduction in weight and in cost and allows the caps to remain fitted snugly by elasticity on the ends of the casing, until brazed.

Abstract: A heat exchanger (2) with flexible tubes (20), particularly for a motor vehicle cooling installation. The tubes (20), for example made of a plastic material, are designed to carry a heat-exchanging fluid capable of co-operating with an air stream circulating through the exchanger (2). The inventive exchanger (2) comprises means for maintaining the tubes (20) in parallel rows. The tubes (20) are designed to be generally shaped like substantially sinusoidal lines. The sinusoids of two contacting tubes (211, 212) of two consecutive rows, are phase offset relatively to each other such that the two tubes (211, 212) are maintained in two contact zones (210) per sinusoid interval, thereby leaving interstices between the tubes (20) to enhance the penetration of the flux.

Abstract: A module has an end part with at least one fixing pin interacting with fixing means carried by a support of a motor vehicle. A device for fixing the module to the support has an elastic fitting with a hollow for the fixing pin of the module, and a removable member with a first end. The first end has two elastic arms with concavities turned towards one another to clamp the fitting accommodating the fixing pin. The removable member also has a second end for interacting with the fixing means for securing to the support with a degree of freedom of movement chosen to provides for mutual movement of the two arms, in which one of them is moved towards the other.

Abstract: A heat-exchange module has a main exchanger and at least one secondary exchanger, each including a body with fluid-circulation tubes and with a clipping device for fixing the secondary exchanger onto the main exchanger so that the same airflow can pass through the bodies of the exchangers. The clipping device has at least one comb-shaped component including a fitting device for fitting onto a first of the exchangers, and at least one first row of teeth having between them, pair by pair, a gap of a shape corresponding to the cross section of the fluid-circulation tubes of the second of the exchangers, so as to clip the body of this second exchanger onto the comb-shaped component.

Abstract: The element has a first component of the general shape of a channel exhibiting opposite free edges, and a second, plastic component overmoulded onto the first component. Each free edge is divided, in its longitudinal direction, into segments which are offset with respect to one another alternately inwards and outwards in the sideways direction of the channel. The second component forms, on each free edge, a longitudinal bead which covers over the outer face of the segments which are offset inwards and the inner face of the segments which are offset outwards. This element can be used as a front-face support for a motor vehicle.

Abstract: A cooling device for a vehicle with an electric motor powered by a fuel cell has a first cooling loop suitable for cooling the fuel cell and traversed by a first cooling fluid, a second cooling loop suitable for cooling at least the electric motor and traversed by a second cooling fluid, and a heat exchanger interposed between the first cooling loop and the second cooling loop.

Abstract: Heat-exchange module for a motor vehicle The invention relates to a heat-exchange module comprising a first heat exchanger (12) the manifold chambers (18, 20) of which are each formed from two shaped sheet-metal pieces (36, 38) and each comprise at least one lug (52, 64) originating from one of the sheet-metal pieces and folded into a housing (60, 68) of matching shape which each of the manifold chambers (28) of a second heat exchanger (14) includes. In one embodiment, the first heat exchanger (12) is a radiator for cooling a motor-vehicle engine, while the second heat exchanger (14) is an air-conditioning condenser.

Abstract: The invention concerns a blade having an axial length L, expressed in meters, equal by approximately 20%, to the value of L0 given by the following formula (I): L0=0.426262−5.14288.D+23.1798.D2−44.2505.D3+30.8841.D4, D being the blade diameter expressed in meters. The invention enables to substantially reduce the blade axial space requirement, for a given diameter and for obtaining the desired performance. The invention is useful for cooling a motor vehicle engine.

Abstract: A motor vehicle heat exchanger has a bundle (10) formed solely from flexible tubes (12) made of plastics, as well as two end blocks (22, 24) joining these tubes. The heat exchanger further has at least one spacer (50) arranged at a chosen location between the end blocks (22, 24) and including apertures for the tubes to pass in order to provide support for the tubes (12) with a chosen spacing or pitch.

Abstract: A heat exchanger module for a motor vehicle having a fan shroud mounted on a heat exchanger. The shroud includes two blocks that extend from a first side of a duct and are adapted to engage corresponding housings in a first manifold of the heat exchanger. Two spring clips extend from a second side of the fan duct and have an aperture for accommodating a lug projecting from a side face of a second manifold of the heat exchanger.

Abstract: The partitions are inserted through an open end of the cylindrical tubular wall of the fluid box, positioned and immobilised by means of deformations in the tubular wall, before the tubes are inserted and the assembly is soldered in a fluidtight manner. According to the invention, the deformations are localised on the outside of the region of the perimeter of the tubular wall on which the passage openings for the tubes extend, so as not to affect these openings. The method may be used in a condenser for a motor vehicle air conditioning unit.

Abstract: A reservoir is screwed axially into a base, itself brazed to a collecting compartment of the condenser. It is linked to the former by means of channels recessed into the base. The threads securing the reservoir are protected from any contact with the refrigerating fluid by sealing rings and from external attack by a sleeve covering the outside of the junction area between the reservoir and the base. Applied to air-conditioning application for automobile passenger compartments.

Abstract: The invention concerns a front panel comprising a top metal section extending over the whole width of the panel and provided with holes for fixing it to the motor vehicle structural elements, and a metal support provided with a hole for fixing it to other structural elements or fittings of the vehicle. The section and the support are separate parts, mechanically interlocked by a plastic material jointly overmoulded on the section and the support. Said structure enables in particular the use of sections with closed cross section, such as extruded or hydroformed sections. The support consists in particular of a center jamb including a hole for being fixed to a hood lock and to a cowl beam of the vehicle.

Abstract: A collection box with an integrated reservoir for a heat exchanger, has a cylindrical tubular wall and a separation wall, disposed inside the tubular wall to delimit a collection compartment and a reservoir compartment. The tubular wall is equipped with spaced holes to receive the ends of tubes of a bundle of tubes. The separation wall comprises a central core prolonged on either side by a first edge region and by a second edge region having profiles each designed and suitable to be applied and soldered against the inside of the tubular wall.

Abstract: This invention relates to an exhaust system with a catalytic converter for the exhaust gases of an internal combustion engine of a motor vehicle. The system comprises at least one heat exchanger having a cooling fluid therein, selector means for selectively directing the exhaust gases, wholly or partly, into the heat exchanger in order to cool them, and means for using the heat of the heat exchanger cooling fluid to heat the passenger compartment of the vehicle. The heat exchanger may be located upstream or downstream of the catalytic converter. The invention provides depollution of the exhaust gases and heating of the passenger compartment.

Abstract: An axial flow fan has a hub and plural blades. Each blade extends from hub to a blade support ring and has a pitch which decreases over a first inner part of the radial extent and increases over a second outer part of the radial extent. In a preferred embodiment, the trailing edge of the blade tip and the median point of the blade root are situated on a common radial line. In a further preferred embodiment, a median point on the tip chord of the blade is disposed angularly ahead of a median point of the root chord. The fan provides improved noise performance.

Abstract: A folded tube for a motor vehicle heat exchanger, is made from a metal strip folded on itself so as to form two parallel channels separated by a spacer. The spacer results from the joining of two borders of the strip each being folded at right angles towards the inside of the tube from an outer face. Each of the borders is folded at right angles with respect to the outer face, forming a folded outer edge, and includes a protruding swelling which extends at least on the same side as the outer face of the strip. The invention makes it possible to produce a tube having flat large faces, the continuity of which is assured in the regions close to the spacer and which contributes to better holding of corrugated spacers in the heat exchanger.