Abstract: Determining the thermodynamic state of fuel includes opening the venting connection to release the tank pressure while monitoring the derivative pressure (dP/dt), closing the venting connection when one of the following conditions is met, the derivative pressure (dP/dt) is lower than a predetermined threshold DP1 or the opening time ?t1 reaches a predetermined value, if the closing of the venting connection occurs when the opening time ?t1 reaches the said predetermined value, determining that the fuel is boiling and aborting the method if the closing of the venting connection occurs when the derivative pressure (dP/dt) is lower than the said threshold DP1, measuring an initial tank pressure at the closing of the venting connection, measuring the final tank pressure after a closure time ?t2, calculating the pressure variation (?P/?t2), comparing the pressure variation (?P/?t2) with a first threshold PV1, if the pressure is lower then aborting the method.

Abstract: A method for assembling a tank including: providing a first shell and a second shell; putting edges of the first and second shells into contact with each other and mutually connecting the edges; providing the first shell with a first connecting member extending inwardly from an inner surface of the first shell, the first connecting member including a hole; and after the edges of the first and second shells are put into contact with each other, connecting the first connecting member to the second shell by inserting a pin shaped element through a hole in the second shell and the hole in the first connecting member.

Abstract: A ventilation flow rate regulator for a pressurised tank of a vehicle. The regulator includes a body including a gas inlet and a gas outlet, and at least one restrictor mounted movably relative to the body. The restrictor is mounted to reduce a cross-section of at least one path of a gas flow proceeding from the inlet to the outlet, when a flow rate at the inlet is greater than a predetermined threshold. The regulator is arranged so that the cross-section remains non-zero irrespective of a flow rate.

Abstract: It is proposed a pressure vessel comprising a body and a tape-based reinforcement structure arranged onto the body, the tape-based reinforcement structure comprising: a primary tape arranged in a circumferential manner onto the body; a secondary tape arranged in a non-circumferential manner onto the body, at least one portion of the secondary tape being attached to the primary tape.

Abstract: The invention relates to a pump (2) intended to pump an additive in an SCR system for a vehicle. The pump is configured to rotate in a first direction of rotation in order to convey additive stored in a tank towards an injector via an injection channel. The pump includes a chamber (23) which houses a gear system (22). The chamber (23) is in fluid communication with the tank and the injection channel via an inlet channel (24) and an outlet channel (25) respectively. The pump is such that the inlet channel and the outlet channel are arranged so that after draining the injection channel, the chamber collects and retains the additive.

Abstract: This invention relates to a reinforcement structure made of plastic material for plastic vehicle tank. The reinforcement structure comprises a first portion comprising at least one weak section and at least one strong section, which are designed so that said weak section breaks before said strong section, when said first portion is under mechanical stress, said reinforcement structure also comprises at least one second portion designed to reduce the slosh noise, said second portion extends from the strong section.

Abstract: A method for manufacturing a hollow body, typically a tank, from a plastic material. The method includes molding a preform into shells in a molding tool; joining an insert to an inner surface of a shell of said shells, the insert defining a sub volume within the hollow body to be made; joining together the shells to form the hollow body by closing the molding tool and applying a main pressure to a main volume enclosed by the shells. It is proposed to apply a sub pressure to the sub volume while applying the main pressure to the main volume, such that a pressure difference between the main volume and the sub volume is bigger than 0.20 bar (P1??P2?>0.20 bar) and smaller than 3.00 bar (P1??P2?<3.00 bar).

Abstract: The invention relates to a pressure vessel system comprising a pressure vessel for storing a gas under pressure, at a potential leakage interface of the pressure vessel, one or more gas sensitive parts configured to undergo a modification when the gas passes along the potential leakage interface; said leakage interface being an interface within the pressure vessel; and one or more detection modules configured to detect a modification of the one or more gas sensitive parts. The invention also relates to a connection assembly comprising a first connection part and a second connection part, said first and second connection part being configured to realize a gas tight connection; one or more gas sensitive parts arranged at a connection interface between the first connection part and the second connection part, and one or more detection modules configured to detect a modification of the one or more gas sensitive parts.

Abstract: A valve apparatus for use in a liquid tank, the valve apparatus including a casing defining a main chamber, the main chamber having at least one inlet orifice and at least one outlet orifice; a float including a closure element, the float being movable inside the main chamber between a first position and a second position in which the at least one outlet orifice is closed off by the closure element; a weight control system configured for controlling the weight of the float by transferring a load in and out from the float, such that the weight of the float in the second position is lower than the weight of the float in the first position.

Abstract: A method is proposed for detecting the level of a fluid in a tank by means of a capacitive probe, the probe comprising a column of capacitive elements, each capacitive element being associated with a given level in the tank. The method comprises the following steps consisting in, for each capacitive element: obtaining a value representative of the capacitance of the capacitive element; obtaining a compensation value depending on a piece of temperature information; calculating a compensated value from the value representative of the capacitance of the capacitive element and from the compensation values; detecting the presence of the fluid at the level associated with the capacitive element, by comparing the compensated value to a preset detection threshold.

Abstract: A method for manufacturing a fuel tank or filling pipe including a wall made of thermoplastics material and a fibrous reinforcement over at least part of the surface thereof, the method including: heating the fibrous reinforcement to bring the fibrous reinforcement into an at least partially molten state; introducing the heated fibrous reinforcement, and the wall in at least partially molten state, into a mold; and welding the fibrous reinforcement to the wall using pressure of a gas which inflates the wall and presses the heated fibrous reinforcement firmly against the wall in the molten state.

Abstract: The invention relates to a tank (1) for storing a liquid, comprising a wall (10) made of plastic and a device for stopping the filling of said tank (1) with a liquid at a maximum fill level, this device extending inside the tank (1) and comprising at least one opening (71) of which the position inside the tank (1) fixes the said maximum fill level. The device that stops the filling of this tank (1) comprises a first part formed with the wall (10) and a second part which is fixed hermetically to the first part.

Abstract: A valve apparatus for use in a liquid tank, includes a casing, an extractor, and a float. The casing defines a main chamber, the main chamber having an inlet orifice and at least one outlet orifice. The extractor includes at least one wall member extending substantially across the main chamber and being adapted for extracting droplets present in a vapour stream coming from the liquid tank and entering the main chamber via the inlet orifice. The float includes a closure element capable of closing off the outlet orifice(s), the float being slidably mounted along the at least one wall member.

Abstract: The invention relates to a tank (300) comprising an electrical device (400) attached to a first connector (100), said first connector being adapted for being coupled to a second connector, said first connector comprising a first plastic part (110) and at least one first electrically conductive contact element (121, 122), said at least one first electrically conductive contact element being electrically connected with said electrical device, said second connector comprising a second plastic part and at least one second electrically conductive contact element, said at least one second electrically conductive contact element being configured for being coupled with said at least one first electrically conductive contact element, wherein said first plastic part is adhered along a closed curve extending around the at least one first electrically conductive contact element to a plastic portion inside the tank.

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

Abstract: A method is provided for monitoring a chemical agent concentration in a chemical solution stored in a tank of a system of a motor vehicle. The system includes a pump driven by a motor where the pressure of the pump is controlled by a controller. The method includes measuring a plurality of values characteristic of the energy transmitted by the motor to the pump for a corresponding plurality of pump pressure values; determining at least one parameter of a relationship between the energy transmitted by the motor to the pump and applied pump pressure values from the plurality of measured values and the corresponding plurality of pump pressure value; and comparing the at least one parameter to predetermined reference parameters.

Abstract: It is proposed a method for activating/deactivating a biological catalyst used in a conversion system on board a vehicle, the vehicle comprising a source of energy adapted to activate the biological catalyst for converting a compound into reaction product. The method comprises the steps of: —detecting (SI) an event indicative of a filling/refilling of the conversion system with biological catalyst; —determining (S2) an amount of energy available at the source of energy; —starting at least one conversion operation comprising the steps of: (i) verifying (S3) whether the amount of energy available is greater than or equal to an amount of energy needed for activating the biological catalyst so as to achieve a predetermined level of conversion of said compound; (ii) if said verifying (i) is positive, activating (S4) the biological catalyst; —terminating (S7) said at least one conversion operation.

Abstract: A liquid delivery module including: a base plate positioned through an opening made in a wall of a liquid tank; a pump assembly configured to pump liquid from the base plate and to deliver the liquid to a supply line, via a hydraulic connector; a cover adapted to be fixed to the base plate. The pump assembly is mounted outside the tank. The hydraulic connector is partially or entirely integrated to the cover.

Abstract: A method of determining one physicochemical parameter of a chemical agent in a fluid is provided the method comprising the steps of: providing a pressurized fluid of said chemical agent upstream of a dosing unit in a line; changing the opening condition of said dosing unit at a determinable time to to provide a dosing of said fluid or a change in the dosing of said fluid; determining the time, tp, at which the pressure wave in said line resulting from the pressure drop upon changing the opening condition of said dosing unit is detected at a known distance, d, from said dosing unit; determining the velocity of wave propagation from said time interval tp?to and said known distance, d; and deriving the physicochemical parameter of said chemical agent from said velocity of wave propagation. The invention also pertains to a system for determining the physicochemical parameter of a chemical agent in a fluid, operating according to the same method.

Abstract: A process to pump liquid held in a passive tank to an active tank when the active tank has a liquid level below a set point level and when the passive tank contains liquid at a temperature above the freezing point of the liquid, the active tank including a discontinuous level gauge configured to provide at least x+1 indications of the level of liquid in tank as a function of the relative position of a moving part with respect to x set point levels, x being at least equal to 2. The process includes: reading the level indication from a level gauge; starting a pump and measuring a time during which a pump transfers liquid; stopping the pump if this time is greater than a time constant, which depends on the value of the level indication, and if a next set point level is not reached.