Abstract:
Plastic fuel tank (1) comprising a noise reduction baffle (6) and interference sections (2) for suppressing tank deformation in the case of application of negative pressure to said tank, the interference sections projecting inward in the tank from an upper surface and a lower surface thereof respectively, and being disposed so as to be substantially opposed with a specified interval between them, one of these sections being part of a fixation device (5, 7) which secures the baffle to the tank wall.
Abstract:
Method for fastening a component (9) to a lower internal wall of a fuel tank (12) comprising an opening, according to which: the tank (12) is provided wit a fastening point (1) close to the opening and with relief(s) (13) that make it possible to position the component at the location where it must be fastened; the component (9) is inserted into the tank via the opening and it is positioned on the wall with the aid of the relief(s) (13); a mechanical connection is created between the fastening point (1) and the component (9) with the aid of a support (4).
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:
Method for heating a urea SCR system using at least two resistive heating elements (R1, R2), one of which (R1) is intended for heating one or some (part(s) of) component(s) always in contact with a substantial amount of urea and the other (R2) is intended for heating one or so me (part(s) of) component(s) which are sometimes not in contact with a substantial amount of urea, and according to which, when starting the system in freezing conditions, the resistive element (R1) is activated but the resistive element (R2) is activated only when its component is actually in contact with a substantial amount of urea.
Abstract:
Process for manufacturing a plastic hollow body, said process comprising the following steps: a) a molten plastic parison is extruded, in an extruder, through a die; b) at least one longitudinal cut is made in the parison; c) the parison is introduced into a mould comprising two cavities; and d) the hollow body is moulded by conforming the parison to the mould cavities, said die being equipped with a passage for the molten plastic which gradually modifies the shape of the parison so that it is substantially flattened on exiting. Die suitable for implementing this process.
Abstract:
System for filling a tank comprising a head (12) and a fill pipe extending between the head and the tank, in which: the pipe head comprises a chamber (32) with an inlet opening (16) that connects to the atmosphere and an outlet opening (18) that connects to the fill pipe and a stopper (20) to close the access to the fill pipe, the stopper being movable between an open position, in which the access to the fill pipe is open, and a closed position, in which the access to the fill pipe is closed, the inlet and outlet openings of the head being sized and arranged so as to allow introduction of a filling nozzle into the fill pipe through the pipe head when the stopper is in its open position; the fill pipe comprises or is preceded by a local restriction (40) designed so that the cross section of the passage for the nozzle is substantially reduced to the outer diameter of the nozzle; and a degassing connection links the fill pipe and the fill head outside of the outlet opening of the latter head.
Abstract:
System for storing an additive solution and injecting it into the exhaust gases of an internal combustion engine, said system comprising a tank (1) for storing the additive and a rotary pump (3), a metering valve (4) and an injector (8) which a separate devices, this system making it possible to meter and inject the additive solution into the exhaust gases as is, without diluting it with a gas. In this system, the pump outlet pressure is regulated by adjusting the rotational speed of the pump. Process using such a system.
Abstract:
A system for storing an ammonia precursor comprises a tank (1), a filler pipe equipped with a cap and a ventilation line (10) establishing a direct connection between the filler pipe and a canister (3) and a valve (2) designed to specifically open this connection once the cap (12) starts to be opened, whreby the release of a puff of amonia is avoided.
Abstract:
Valve including a mechanical part (preferably, a float) for performing a ROV function (Roll Over Valve) and an electronic part (electronically controlled solenoid valve) for performing a venting function.
Abstract:
Method for manufacturing a plastic fuel tank with improved creep strength, whereby: a) a plastic parison comprising two distinct parts is inserted into an open two- cavity mould; b) a core is inserted inside the parison, the said core bearing at least part of a reinforcing element capable of securing (creating a link between) the two parts of the parison; c) the parison is pressed firmly against the mould cavities (by blowing through the core and/or creating suction behind the cavities); d) (the part of) the reinforcing element is fixed to at least one of the parts of the parison using the core; e) the core is withdrawn; f) the mould is closed again, bringing its two cavities together in such a way as to grip the two parts of the parison around their periphery in order to weld them together; g) a pressurized fluid is injected into the mould and/or a vacuum is created behind the mould cavities in order to press the parison firmly against the mould cavities; h) the mould is opened and the tank is extracted.