Abstract: An SCR method for purifying the exhaust gases of an internal combustion engine of a vehicle, according to which ammonia gas is exclusively metered in the exhaust gases, the method comprising a step of releasing ammonia gas from at least one solid absorbing matrix where it is stored by sorption and a step of metering the released ammonia gas in the exhaust gases. The method is such that it comprises a step of regenerating the solid absorbing matrix that consists in: generating a refilling ammonia gas by thermally decomposing an ammonia precursor in a heater mounted on board the vehicle; directing the refilling ammonia gas to the solid absorbing matrix where it is stored thereon.

Abstract: The invention is based on the insight that a filling system obtained by combining a “Kruse” compatible threaded socket and an annular magnet as required for the operation of the “Elaflex” nozzle, will exhibit air exchange problems related to the difference in the positioning of the respective air intake openings of the “Kruse” bottle and the “Elaflex” nozzle. More particularly, the invention is based on the insight that by judiciously providing a chamber in fluid communication with the volume of air or vapor in the tank, filling may be made possible with a “Kruse” bottle as well as with an “Elaflex” nozzle.

Abstract: Process for starting an SCR system intended for transporting urea from a tank to the exhaust gases of an engine using a feed line, this system comprising a rotary pump controlled by a controller and driven by a brushless direct current (BLDC) motor that comprises a rotor equipped with at least one permanent magnet and with a stator comprising at least 3 electromagnetic coils in which the direct current can flow according to a given sequence to make the rotor rotate, according to which, before starting the pump, a temperature is measured using a sensor and if this temperature is below a setpoint temperature, before making the rotor rotate, the current is passed through at least one of the coils in a way such that it preheats the pump without making the rotor rotate.

Abstract: A process for manufacturing a hollow body including a thermoplastic wall and a fibrous reinforcement welded on at least one portion of the surface of the wall, or its outer surface, the fibrous reinforcement including a thermoplastic similar to or compatible with that of the wall of the hollow body, having a thickness of at least 1 mm and from 30 to 60% in weight of fibers, the method including heating a portion of the outer surface of the hollow body where the reinforcement will be welded; heating the fibrous reinforcement to soften or melt the thermoplastic of the reinforcement; and moving the reinforcement and applying the reinforcement to the portion of the outer surface of the hollow body. The applying the reinforcement includes: applying an initial pressure on at least one portion of the reinforcement; and applying pressure for a final welding using robotized pressure applying mechanism.

Abstract: Method for manufacturing a storage tank comprising an inner liner, an outer filament winding and a connecting part. The method comprises the steps of: blow molding the inner liner by extruding a parison, pinching the inner liner at least at one extremity to create a pinch and then blowing the parison; providing the connecting part with a slot of appropriate shape and size to receive a part of the pinch; inserting the part of the pinch in the slot so as to secure the inner liner and the connecting part; and applying the outer filament winding around the liner and the connecting part.

Abstract: A method for venting of a liquid tank with a valve, a primary compartment and a secondary compartment which are connected together via a bridge. The valve includes a chamber provided with a cover, which extends at least partly into the tank and is connected via an upper venting aperture to a venting circuit. A first device monitors a level of liquid in the primary compartment. A second device monitors a level of liquid in the secondary compartment. The valve configured to be closed when the first device detects that the level of liquid in the primary compartment is equal to or higher than a first predetermined filling level, and the second device detects that the level of liquid in the secondary compartment is equal to or higher than a second predetermined filling level.

Abstract: System for storing an internal combustion engine exhaust gas liquid additive, the said system comprising a tank for storing the additive and an “immersed” baseplate (1) positioned through an opening made in the bottom wall of the tank, the said baseplate comprising at least one orifice through which a system for injecting the said additive into the exhaust gases can be fed, and also incorporating at least one other active component of the storage system and/or of the injection system.

Abstract: A gauging method for a plastic fuel tank mounted on a hybrid vehicle, the tank including a reservoir including a gauge for measuring an amount of fuel in the tank, the method including: measuring the amount of fuel in the tank using the gauge; estimating deformation of the tank using at least one sensor onboard the vehicle; and correcting the amount measured by the gauge based on the estimated deformation.

Abstract: A system for a fluid tank for storing a urea solution in a motor vehicle, the system including a first float having a first density and a second float having a second density, the first and second floats being movably arranged on a guide in the fluid tank, the first density is less than a density of the urea solution at a reference temperature but greater than a density of water at the reference temperature, and the second density is less than the density of water at the reference temperature. The system further includes a control system configured to receive signals indicative of a level of the floats, and to generate an anomaly signal in response to detecting sinking of the first float and floatation of the second float.

Abstract: A tank for storing ammonia by sorption, the tank including cells, or cells made of plastic, that communicate with one another and with at least one orifice that communicates with the outside, the cells configured to contain a solid intended for the sorption of ammonia.

Abstract: A rotary pump intended to pump a fluid in a system on board a vehicle, such pump comprising a stator, a rotation axle attached both to a mechanical pumping element and a magnetic rotor, and electrical connections. The rotor, the stator and the electrical connections are overmolded in a leaktight manner with a plastic.

Abstract: Ventilation system for a fuel tank comprising a pump, an active liquid/vapor separator (LVS) that can be drained using the pump, in which a roll-over valve (ROV) that is normally open brings, by default, the internal volume of the LVS into communication with the pump and only blocks this communication when the level of fuel in the valve reaches a certain height or when the tank is tilted beyond a certain angle, or even overturned.

Abstract: A method of controlling pressure of a fuel system of a hybrid vehicle including an engine fed with fuel stored in a tank made of plastics material, and an electric motor, the method including, when the engine is stopped, relaxing pressure inside the fuel tank in full or in part after a given safety duration and as a function of at least one stress accumulation parameter, each stress accumulation parameter being associated with an element of the fuel system and being defined by information concerning temperature, information concerning exposure duration, and information concerning a level of stress on the element.

Abstract: A vehicular fluid injection system including a storage tank, an injection line, a heating system including an electrical heating element being powered by a power source, and a voltage converter inserted between the power source and the heating element, alone or combined with a PWM power regulation.

Abstract: A supply system for liquid including a liquid tank and a liquid supply line forming a passage for the liquid from the tank to an outlet of the supply system. The supply line includes at least one part configured to form at least one gas pocket communicating with the passage to take up a change of volume of the liquid in event of freezing. Such a system can be used in a selective catalytic reduction system (SCR).

Abstract: A method for handling fuel vapors onboard a hybrid vehicle including an internal combustion engine or ICE and a fuel system for the ICE, the method including at least partly condensing fuel vapors generated in the fuel system using an absorption refrigeration device. The absorption refrigeration device includes a regenerator that uses as a heat source, heat of combustion of part of the fuel vapors that are burnt in an adequate device.

Abstract: Ventilation valve for a liquid tank comprising: an housing comprising a side wall provided with ventilation openings, a cover provided with a ventilation aperture which may be connected to a venting circuit of the tank, and a base pierced with at least one drainage aperture; and a float capable of closing off the ventilation aperture, such float being able to slide vertically inside the housing depending on the level of liquid therein, the valve also comprising a drainage chamber located underneath the housing in which the valve slides, the chamber also comprising at least one drainage aperture that is not aligned with the drainage aperture of the base of the housing.

Abstract: An additive delivery system including a tank for storing an additive, an active component, and a controller connected to the component, wherein the controller is adapted to determine a value representative of temperature of the additive in the system based on an electrical characteristic of a part inside the component, or inside the controller, wherein the part has a further function next to the temperature estimation function in normal operation of the additive delivery system.

Abstract: A fuel tank including two opposite wall portions and at least one reinforcing element connecting the two wall portions, in which the reinforcing element includes a hollow pillar having a ratio of at least 1.8 between the diameter of its cross section at its ends and the diameter of its cross section at least at one intermediate point.

Abstract: Method for stake-fastening an accessory (4) into a plastic fuel tank, whereby: the accessory (4) is equipped with at least one orifice (5) which passes right through the accessory (4); at least some of the plastic of which the wall of the tank (1) is made is melted; and some of the molten plastic is forced through the orifice (5) of the accessory without becoming detached from the remainder of the molten plastic; the protruding molten plastic is given an appropriate shape (8) to obtain a self-formed plastic rivet, and is left to solidify; the size and shape of the orifice (5) and/or of the solidified plastic (8) being such that the accessory (4) is mechanically fastened to the tank by at least some of the solidified plastic (8), the stake-fastening of the accessory (4) occurring at the time of manufacture of the tank (1) through the moulding of a split or at least two-part parison.