Abstract: A plastic adapter for fuel tanks. The adapter includes crimping lugs for fixing the adapter to a pipe or an opening in the tank.

Abstract: Layer made of base plastic comprising, in the dispersed form, nodules with a diameter of less than or equal to one micron comprising barrier plastic incompatible with the base plastic; multilayer structure comprising at least one such layer and process for the manufacture of such layers/structures.

Abstract: SCR system for treating the exhaust gases of an internal combustion engine, this system comprising a line for feeding a urea solution into the exhaust gases and a pump capable both of feeding the urea solution into the exhaust gases and of purging at least one part of the line by sucking a gas therethrough by means of a suction device, this system also comprising a control unit capable of activating and/or deactivating the operation of the pump and that of the suction device in a sequential manner in the course of one and the same purge procedure.

Abstract: A sensor for detecting a liquid level, including a measurement capacitor, a reference capacitor, an integrating capacitor, a calibration capacitor, a controller, an amplifier, a comparator, and a complementary calibration capacitor. The controller implements operations, over accumulation periods and for given target and discharge capacitors, of a target capacitor charging, a charge transfer, a decision, a conditional discharge, and a return. The target and discharge capacitors given at each period are taken from pairs of capacitors, including the measurement and calibration capacitors and the reference and complementary calibration capacitors. A method estimates the liquid level using the sensor in a vehicle.

Abstract: A method for storing an additive and injecting the additive into exhaust gases of an engine supplied with fuel from a fuel tank and returning unused excess hot fuel to the tank via a return line. The method heats the additive using a section of the return line when the additive temperature is below or equal to a threshold value, and short circuits the heating section when the additive temperature exceeds the threshold value. A system for implementing such a method includes an additive heating section including a section of the return line; a temperature sensor; and a device allowing the heating section to be short circuited when the temperature measured by the sensor exceeds the threshold value.

Abstract: A system for storing an additive and for injecting the additive into exhaust gases of an internal combustion engine. The system includes a tank for storing the additive, an injector and a pump for conveying the additive from the tank to the injector via an injection line, and a purge device configured to force a purge gas to flow through the entire injection line either from the tank to the injector, or from the injector to the tank.

Abstract: An electronically controlled electromechanical valve having at least three ports through which a fluid can flow and at least three different stable positions in which at least two ports are in fluid communication. The valve includes a stationary outer housing including at least three bores; a translating inner section that translates about an axis and includes adequate bores defining, with the bores of the housing, the at least three ports of the valve; and an electrical actuating system controlled by an electronic controller and configured to switch the valve from one position to another by translating the inner section along its axis. A fuel system vapor management unit includes such a valve.

Abstract: Multilayer plastic fuel tank, comprising a sulphonated part closing off an opening in the wall of the tank. The sulphonated part was manufactured independently of the tank. Process for manufacturing a tank comprising such a sulphonated part by molding a tank wall by blow molding or compression molding, the wall having an opening, and welding the sulphonated part to the wall of the tank surrounding the opening.

Abstract: Method for detecting defects in a plastic vehicle tank equipped with internal accessories located inside the tank. The method comprises at least the following steps: a) providing the tank equipped with said internal accessories; b) making a digitized X-ray image of said tank; c) providing a reference image of said tank; d) comparing the digitized X-ray image and the reference image by means of a computer vision software; e) deciding on the presence of defects when differences exist between the digitized X-ray image and the reference image.

Abstract: Urea tank and base plate with an integrated heating element in which the heating element comprises at least one flexible part which is preferably a flexible heater comprising at least one resistive track affixed to one flexible film and/or placed between two flexible films.

Abstract: Method for fastening an accessory to a wall of a plastic fuel tank, this fastening taking place by snap-riveting using a tool at the same time as the tank is manufactured by moulding, the accessory being, for this purpose, provided at at least one of its fastening points with an orifice through which the snap-riveting is carried out. According to the invention, a concave relief at least partially surrounds this orifice, the relief having a size and shape suitable for being able to cooperate with an excrescence of the tool during the snap-riveting.

Abstract: System for storing an additive solution and injecting it into the exhaust gases of an engine, said system comprising two tanks for storing the solution and one pump for supplying the solution from these tanks to an injection line, these two tanks being in parallel and each being connected to the pump by a branch of a supply line, the branch (I) coming from the first tank (1) giving rise to lower pressure drops than the branch (II) coming from the other tank (2) so that the solution is normally withdrawn mainly from tank (1) and is withdrawn from tank (2), and only from the latter, when tank (1) is non-operational.

Abstract: Article based on an elastomeric composition (C) comprising a crosslinked blend (B) of at least: (1) one substantially saturated synthetic elastomer; and (2) a copolymer containing repeating units derived from at least one conjugated diene and at least one ?,?-unsaturated nitrile, the article having been subjected to a surface halogenation treatment.

Abstract: Method for mounting a capacitive level sensor inside a liquid tank having a bottom wall, the sensor having a foot and a measuring portion comprising at least one capacitive element supported by a rigid support extending from said foot, wherein the foot is fixedly secured to the bottom wall of the tank through a retainer, and according to which the rigid support forms an angle with the foot so that the length of the measuring portion of the sensor is higher than the height of the tank in the portion where the foot is located.

Abstract: Supply system for a liquid comprising a liquid tank, a supply line, a pump, a filter and a device that makes it possible to purge the line, pump and filter and that comprises a non-return device preventing liquid from entering into these elements once they have been purged. In this system, the pump, filter and non-return device are combined in a compact module, the filter at least partly surrounding the pump and the non-return device being an integral part of a common housing that surrounds the filter and at least one part of the pump.

Abstract: Process for starting a pump intended to pump a liquid contained in a tank and to produce a substantially constant outlet pressure (setpoint pressure), according to which: 1/ the temperature (T1) of the liquid held in the tank is determined and compared to a setpoint temperature (T0); 2/ if the temperature (T1) is greater than the setpoint temperature (T0), the pump is actuated; 3/ if the temperature (T1) is less than or equal to the setpoint temperature (T0), the tank is heated for a time t1; then 4/ the pump is actuated for a time t2 during which the pump outlet pressure is measured; 5/ if this pressure is stable and in an acceptable margin of the setpoint pressure, the pump is kept going; and 6/ if this pressure is not stable and/or is not in the acceptable margin of the setpoint pressure, the pump is stopped and the tank is heated for a time t3, at the end of which steps 4 to 6 are repeated.

Abstract: An assembly of two components configured to be in contact with hydrocarbons, and a fuel tank including the assembly. The assembly includes a casing or a retaining member fastened to the casing, each of the two components including at least one fastening part configured to interact, and at least one of the components being made from a material configured to swell through action of the hydrocarbons, thus reinforcing retention of the components on one another. A method for manufacturing such a tank includes assembling the two components in the absence of fuel, and then bringing the two components into contact with the fuel.

Abstract: Process for manufacturing a fuel tank equipped with an internal accessory and having a plastic wall produced from a parison, said process comprising, in order, the following steps: a) the accessory (2) and the molten parison (5) are introduced a mould (1) so that the accessory (2) is surrounded by the parison (5), said mould comprising cavities (1) equipped with at least one moving part (4); b) a pressurized gas is introduced inside the parison (5) to carry out a pre-blow moulding of said parison; c) the pre-blow-moulded parison (5) is pressed locally against the accessory (2) using the moving part (4) in order to firmly attach the two without piercing the parison (5); d) the mould (1) is closed and the final blow moulding of the parison (5) is carried out by flattening it against the mould (1) cavities using the pressurized gas; and e) the tank is removed from the mould (1).

Abstract: Method for simulating the ventilation of a liquid tank (1,101), in particular a liquid fuel tank of a vehicle, comprising an internal volume (3,103), a wall (2,102) that defines said internal volume (3,103), and a set of valves (4a,4b;104) for ventilation of the internal volume, said method comprising the calculation of a maximum liquid volume that can be ventilated (14,114) for a maximum angle of inclination of the tank (1,101).Such method also comprises the calculation of at least one maximum liquid volume that can be ventilated (14,114) for at least one intermediate angle of inclination below said maximum angle, but above zero.

Abstract: Method for simulating the gauging of a hollow body intended to contain a liquid and that comprises the following steps: for several different partial filling volumes of said hollow body, calculating the centre of mass of the corresponding free liquid surface; and generating a gauging curve that passes substantially through each of said centres of mass.