Abstract: The ventilation device (4) for a vehicle liquid tank, comprises: a membrane (20) impermeable to a predetermined liquid and permeable to a vapor likely to be produced by this liquid, and at least one pipe (52) suitable for discharging liquid found on the membrane from the device. The or each pipe has an end contiguous with the membrane, the rest of the or each pipe extending at an altitude lower than this end when a main axis of the device is vertical.

Abstract: A stop system intended to engage with a tool for heating by direct contact for a machine for plastic welding of a component over an opening in a wall of a motor vehicle tank. The system contains a cam mechanism which includes a straight cam with a longitudinal axis and a follower coupled to the straight cam for converting a translational movement along the longitudinal axis of the follower into a straight or quasi-straight movement of a point of the follower in a direction non-parallel to the longitudinal axis. The cam mechanism of the follower is capable of moving from a rest position, where the stop system is configured to pass freely through an opening in a wall of a motor vehicle tank, to a working position. The stop system is configured to bear against an inner surface of the wall of the tank through which the straight cam passes.

Abstract: The invention relates to an attachment device (1) for a module for dispensing an aqueous solution contained in a tank on board a motor vehicle.

Abstract: A method of controlling water injection in an internal combustion engine for a motor vehicle in case of freezing cold weather. The method includes: controlling the quality of the water, having a first sub-step of disapproving the quality of the water if the electrical conductivity ? of the water is not zero nor close to zero when the temperature T of the water is 0° C. or less and a second sub-step of approving the quality of the water if the electrical conductivity ? of the water is zero or close to zero when the temperature T of the water is higher than ?4° C., preferably higher than ?2° C. The method further includes a second sub-step of preventing water injection if the quality of the water is disapproved and a third step of allowing water injection if the quality of the water is approved.

Abstract: A method may verify that a fuel tank cap is present and properly closed after refueling of a motor vehicle fuel tank. The method may include, in response to a request for refueling: (a1) enabling refueling of the motor vehicle fuel tank by opening a first vent valve connected in series in a vent line, downstream from a first port of a recirculation line coupled to the vent line, so that to vent the motor vehicle fuel tank to the atmosphere through a fuel vapor canister; (b1) disabling refueling of the motor vehicle fuel tank by closing the first vent valve; (c1) monitoring the internal pressure within the motor vehicle fuel tank when the refueling request is finished; and (d1) concluding that the fuel tank cap is deemed present and properly closed when the internal pressure increases and/or remains higher than the atmospheric pressure.

Abstract: A fuel system having a fuel tank, a filler pipe for adding liquid fuel, a carbon canister for collecting fuel vapors from the fuel tank during a refueling operation, a stepper motor and a stepper driven valve for controlling fluid communication between the fuel tank and the canister, where the valve is configured to be positionable in a closed position, an open position creating a passageway with a first size, and one or more intermediate positions each creating a passageway with a size which is smaller than the first size and having a moving element, movable relative to a valve opening between a closed position and an opened position, the moving element having: a sealing means for making a leak tight seal and, a deflecting means for controlling the fluid flow, where the deflecting means protrudes inside the valve opening and is adapted to be located upstream relative to sealing means.

Abstract: The present invention relates to a heater for a vehicle system for injecting anaqueous solution in an air intake line upstream of a combustion chamber of aninternal combustion engine, or in the combustion chamber of the internal combustion engine, said heater comprising at least one flexible part which comprises at least one metallic resistive track embedded in an insulating material, said insulating material comprising at least one antimicrobial compound and/or being coated by at least one layer containing at least one antimicrobial compound. The invention relates also to a vehicle system for injecting an aqueous solution in an air intake line upstream of a combustion chamber of an internal combustion engine, or in the combustion chamber of the internal combustion engine comprising said heater.

Abstract: This method for manufacturing a pipe (2) for a vehicle fuel tank involves—molding a wall, comprising an inner layer (6) made from ethylene vinyl alcohol (EVOH) and an outer layer (8) made from a polymer suitable for welding, in a mold comprising at least one female shoulder that creates at least one male shoulder on an outer surface of an end portion of the wall during molding, then—cutting off the end portion of the wall.

Abstract: A filler head for a storage system includes a body to be mounted inclined according to a predetermined angle regarding the gravity direction, called the filling direction, and including a main part closed by a cover part so as to form a cavity in which a separating device is received, the filler head being configured to receive, in a cylindrical wall of the separating device extending around the filling direction, a distribution nozzle of a fluid with an automatic stop sensor to prevent overfilling of the filler head, the separating device being arranged to improve the partitioning of a flow coming from a venting line and the flow going to the filling line. The separating device further includes a flange, protruding transversally from the outside surface of the cylindrical wall and mounted in the cavity upstream of the sensor of the nozzle when received in the cylindrical wall.

Abstract: A filler head for a storage system includes a body to be mounted inclined according to a predetermined angle regarding the gravity direction, called the filling direction, and including a main part closed by a cover part so as to form a cavity in which a separating device is received, the filler head being configured to receive, in a cylindrical wall of the separating device extending around the filling direction, a distribution nozzle of a fluid with an automatic stop sensor to prevent overfilling of the filler head, the separating device being arranged to improve the partitioning of a flow coming from a venting line and the flow going to the filling line. The separating device further includes a flange, protruding transversally from the outside surface of the cylindrical wall and mounted in the cavity upstream of the sensor of the nozzle when received in the cylindrical wall.

Abstract: A filler head for a storage system includes a body to be mounted inclined having a main part closed by a cover part forming a cavity in which a separating device is received. The filler head is configured to receive, in a cylindrical wall of the separating device, a distribution nozzle of a fluid with an automatic stop sensor to prevent overfilling of the filler head. The filler head includes a buffer volume in one-piece with the main part in a back portion of the body reducing the speed of flow coming from the venting line, and the cylindrical wall includes a recess facing the opening of the buffer volume in the back portion of the body.

Abstract: A multi-lobe seal for a sealing device for sealing an opening in a multi-layer wall of a fuel tank, the multi-layer wall having a layer of fuel barrier material and an opening in the multi-layer wall, the multi-lobe seal being fuel-impermeable and capable of being positioned in contact, at the opening in the multi-layer wall of the fuel tank, between the layer of fuel barrier material of the multi-layer wall of the fuel tank and a component, is disclosed. The multi-lobe seal includes, on the face capable of being in contact with the layer of fuel barrier material of the multi-layer wall, at least two protrusions, one of which leans on the layer of fuel barrier material of the multi-layer wall.

Abstract: The invention relates to a leak detection system on board of a vehicle comprising a fuel tank (301, 401), a filler pipe (302, 402), a venting line (303, 403) for recirculating fuel vapors from the tank to the filler pipe, said system having a combination pressure and temperature sensor mounted in the vapor dome of the fuel tank, and a pressure sensor located in the recirculation line above the highest possible liquid level that could be present in the recirculation line and to methods to detect said leak.

Abstract: An assembly for a fluid tank includes a baffle and a fluid transfer line. The baffle includes a first deflecting surface defining a first part of the tank and a second deflecting surface defining a second part of the tank. The fluid transfer line extends from the first part to the second part and is linked to the baffle by a linkage supported by the assembly. The extension of the fluid transfer line in the first part defines a first portion of the fluid transfer line, and the extension of the fluid transfer line in the second part defines a second portion of the fluid transfer line. The linkage allows for simultaneous rotation of the first portion and the second portion of the fluid transfer line towards a surface including one of the deflecting surfaces.

Abstract: A system for injecting an aqueous solution into an injection engine, includes: a tank for an aqueous solution, a circuit for supplying aqueous solution to the tank and a filter for filtering the aqueous solution, and a circuit for recirculating the aqueous solution. The injection system also includes recirculation of the aqueous solution, and is provided with an electrovalve including a first inlet connected to a filler neck of the tank, a second inlet connected to the recirculation circuit, and an outlet connected to the supply circuit. The filtration filter is arranged in the supply circuit and/or in the recirculation circuit.

Abstract: The invention relates to a ventilation flow rate regulator (1) for a pressurized vehicle tank (4), which comprises a plunger (10) adapted to be mounted in a ventilation line (7). The plunger (10) has at least one peripheral orifice (111) and at least one non-central internal orifice (112) which is closer to an axis of symmetry (A) of the plunger (10 than the peripheral orifice (111). The non-central internal orifice (112) has a section perpendicular to the axis of symmetry (A) which is smaller than any section of the peripheral orifice (111) perpendicular to the axis of symmetry (A).

Abstract: The invention relates to a device (10) for fastening a component (1) to a wall (101) of a fuel tank (100). According to the invention, such a device (10) for fastening a component (1) to a wall (101) of a fuel tank (100) comprises an anchoring element (3) that is able to be secured to said wall (101) of the fuel tank (100); a connecting element (2) comprising a first end (20) and a second end (21); a first means (4) for connecting said first end (20) to said anchoring element (3) and a second means (5) for connecting said second end (21) to said component (1).

Abstract: The present invention relates to a vehicle system (80) configured for injecting an aqueous solution in an air intake line (12) upstream of a combustion chamber (14) of an internal combustion engine, or in the combustion chamber (14) of the internal combustion engine, said vehicle system (80) comprising the following constituents: ?a tank (16) to store an aqueous solution; ?a pump (18); ?an air intake line (12) upstream of a combustion chamber (14) of an internal combustion engine; ?one or more injectors (20) configured for injecting aqueous solution in the air intake line (12), in the combustion chamber (14) or both; ?a feed line (22) configured in for feeding said injector (20) with aqueous solution pumped by the pump (18). In the vehicle system, at least a portion of at least one of the vehicle system constituents (16, 18, 12, 20, 22) or of a tank (16) component (24) is made of a polymer material.

Abstract: A base made from plastic material for a motor vehicle tank accessory, including protrusions to be welded to a preform during production of the tank by blowing the preform, wherein: the base includes a solid surface recessed from the protrusions, the solid surface including a part without protrusions and a part taken up by the protrusions, the area of the part of the solid surface without protrusions is at least equal to one times the area of the solid surface taken up by the protrusions, the height of the protrusions relative to the solid surface is between 0.6 mm and 0.8 mm.

Abstract: A pressure compensator for regulating the pressure in a bubble of liquid entirely enclosed in a forming volume of ice, atop which is a volume of gas, and which is contained in a reservoir closed by walls. The compensator includes a plunger formed of a head atop a body. The faces of the body of the plunger have a taper which is positive or zero in an essentially vertical, top to bottom direction.