EP3202684A1 - Ensemble de poche pour contenir une solution d'urée liquide destiné à être utilisé dans un système de réduction catalytique sélective pour traiter les gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule à l'aide de la solution d'urée liquide - Google Patents

Ensemble de poche pour contenir une solution d'urée liquide destiné à être utilisé dans un système de réduction catalytique sélective pour traiter les gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule à l'aide de la solution d'urée liquide Download PDF

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Publication number
EP3202684A1
EP3202684A1 EP16154333.5A EP16154333A EP3202684A1 EP 3202684 A1 EP3202684 A1 EP 3202684A1 EP 16154333 A EP16154333 A EP 16154333A EP 3202684 A1 EP3202684 A1 EP 3202684A1
Authority
EP
European Patent Office
Prior art keywords
spout
urea solution
liquid urea
pouch
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16154333.5A
Other languages
German (de)
English (en)
Inventor
Jeroen Schoonderbeek
Sigurd Jørgensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yara International ASA
Original Assignee
Yara International ASA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yara International ASA filed Critical Yara International ASA
Priority to EP16154333.5A priority Critical patent/EP3202684A1/fr
Priority to US16/070,004 priority patent/US10787299B2/en
Priority to HUE17706167A priority patent/HUE049900T2/hu
Priority to DK17706168.6T priority patent/DK3411306T3/da
Priority to BR112018014517-3A priority patent/BR112018014517B1/pt
Priority to US16/069,905 priority patent/US10829287B2/en
Priority to AU2017214443A priority patent/AU2017214443B2/en
Priority to ES17706167T priority patent/ES2787280T3/es
Priority to PL17706167T priority patent/PL3411305T3/pl
Priority to ES17706168T priority patent/ES2886589T3/es
Priority to PL17706168T priority patent/PL3411306T3/pl
Priority to PCT/EP2017/052467 priority patent/WO2017134277A1/fr
Priority to JP2018539857A priority patent/JP2019510154A/ja
Priority to DK17706167.8T priority patent/DK3411305T3/da
Priority to RU2018129779A priority patent/RU2715716C1/ru
Priority to EP17706168.6A priority patent/EP3411306B1/fr
Priority to JP2018539911A priority patent/JP6925348B2/ja
Priority to CA3010976A priority patent/CA3010976C/fr
Priority to KR1020187021250A priority patent/KR20180108609A/ko
Priority to CA3010984A priority patent/CA3010984C/fr
Priority to NZ743189A priority patent/NZ743189B2/en
Priority to BR112018014516-5A priority patent/BR112018014516B1/pt
Priority to NZ743120A priority patent/NZ743120A/en
Priority to RU2018129778A priority patent/RU2715950C1/ru
Priority to PCT/EP2017/052465 priority patent/WO2017134276A1/fr
Priority to PT177061678T priority patent/PT3411305T/pt
Priority to CN201780007155.XA priority patent/CN108602601B/zh
Priority to CN201780008531.7A priority patent/CN108602602B/zh
Priority to HUE17706168A priority patent/HUE056102T2/hu
Priority to AU2017216287A priority patent/AU2017216287B2/en
Priority to KR1020187021249A priority patent/KR20180108608A/ko
Priority to EP17706167.8A priority patent/EP3411305B1/fr
Publication of EP3202684A1 publication Critical patent/EP3202684A1/fr
Priority to CL2018001794A priority patent/CL2018001794A1/es
Priority to ZA2018/04711A priority patent/ZA201804711B/en
Priority to ZA2018/04712A priority patent/ZA201804712B/en
Priority to CONC2018/0007532A priority patent/CO2018007532A2/es
Priority to CONC2018/0007538A priority patent/CO2018007538A2/es
Priority to CL2018001990A priority patent/CL2018001990A1/es
Priority to US17/029,738 priority patent/US11167902B2/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing

Definitions

  • This disclosure relates generally to the technical field of reducing nitrogen oxides (NO x ) emissions in the exhaust gases of combustion engines of vehicles by means of a selective catalytic reduction (SCR) system using a liquid urea solution.
  • SCR selective catalytic reduction
  • a known application lies in the field of passenger vehicles with internal combustion engines equipped with SCR technology for reducing NO x emissions. These vehicles have a liquid urea solution tank separate from the fuel tank.
  • the disclosure more specifically relates to disposable, portable containers for storing the liquid urea solution.
  • An example of such a container is a flexible pouch with a spout for dispensing the liquid urea solution out of the flexible pouch into the liquid urea solution tank of a vehicle.
  • the motor vehicle manufacturers and at this moment more specifically the diesel engine manufacturers, are more and more making use of the SCR treatment system which allows nitrogen oxides to be reduced through a reducing agent, such as ammonia, in the exhaust line of the vehicle internal combustion engine.
  • a reducing agent such as ammonia
  • This ammonia in general is coming from the thermal decomposition of an aqueous urea solution which is directly injected into the exhaust line of the vehicle internal combustion engine.
  • a known SCR treatment system comprises a reservoir containing an aqueous urea solution that is fixed to the vehicle separate from the fuel reservoir. Furthermore, the SCR treatment system comprises a NO x catalyst situated in the exhaust line, and an injection device for the aqueous urea solution which is connected to the reservoir and which is designed to inject the aqueous urea solution into the exhaust line of the engine upstream of the NO x catalyst.
  • the aqueous urea solution that is injected into the exhaust line is converted into ammonia because of the high temperature in this exhaust line.
  • the ammonia thus obtained then reacts, in the NOx catalyst, with the nitrogen oxides resulting from combustion in the vehicle engine so that these oxides are converted by the catalytic reduction into nitrogen (N 2 ) (which no longer presents a danger to the environment), and water (H 2 O).
  • AUS32 (according to ISO 22241) is a well-known aqueous urea solution, produced from demineralized water and high-purity urea. In most parts of the world, AUS32 is known as AdBlue®. In North America however, it is known as DEF while in Brazil, it is known as ARLA32. The urea content lies between 31.8% and 33.2% by weight (i.e. 32.5 weight% ⁇ 0.7 weight%), hence implying an available amount of ammonia between 18.0% and 18.8%.
  • AUS32 is a non-toxic solution that transforms harmful NO x emissions from internal combustion engines of vehicles into harmless water vapor and nitrogen. The AUS32 is filled into a dedicated AUS32 tank, which is a tank that is separate from the fuel tank.
  • Such a container is a flexible pouch that is provided with a spout for dispensing the liquid urea solution as contained in the flexible pouch out of the pouch into the liquid urea solution tank of the vehicle from the outside of the liquid urea solution tank via a filling neck of the liquid urea solution tank.
  • the stand-up pouch consists of a flexible pouch having a standard, widely available short weld-spout located at the center, top end of the 5 liter pouch.
  • This short weld-spout consists of a base that is integrated into an orifice in the outer edge of the flexible pouch and that is attached to the orifice via welding, and a top end that is directly connected to the base and that is provided with screw thread for screwing on and off a closure cap.
  • the disadvantage of the flexible pouch as described above is that it is a standard, off-the-shelf pouch having a standard, short spout. If such standard, short spout were to be used to fill the liquid urea solution tank of a vehicle having an onboard tank filling neck with a standard diameter of 19 mm, there is a large risk of spillage of the liquid urea solution when filling the liquid urea solution tank of the vehicle.
  • the short spout combined with the heavy weight of a filled pouch, could easily result in the accidental pouring of liquid urea solution outside the onboard tank filling neck. Aside from the unpleasant smell and mess such a spill would generate, there is the very likely risk of corrosion damages to the vehicle, since AUS32 has corrosive properties.
  • the BASF 5 liter flexible pouch is not in compliance with the ISO 22241-5 norm, that can be summarized as follows:
  • An objective is therefore to provide a flexible pouch with a spout that has a reduced spillage risk in the filling of the liquid urea solution into the liquid urea solution tank of vehicles.
  • a pouch assembly comprising a flexible pouch for containing a liquid that is an aqueous urea solution for use in a selective catalytic reduction system for treating the exhaust gases of an internal combustion engine of a vehicle.
  • the pouch assembly is adapted for transferring the liquid in the flexible pouch to a liquid urea solution tank of the vehicle from the outside of the liquid urea solution tank.
  • the pouch assembly comprises a flexible pouch and a spout attached thereto. At least a part of the spout extends outside the flexible pouch which spout is arranged to dispense liquid urea solution contained in the flexible pouch into the liquid urea solution tank of the vehicle via a tank filling neck.
  • the tank filling neck is configured to receive the spout. More in particular, the tank filling neck has an inside passage into which the spout can at least partially extend or be inserted during the filling of the liquid urea solution tank.
  • the spout comprises a base having an elongated axial through-passage to serve as a discharge passage for the liquid urea solution, the base extending axially through an opening provided in a wall of the pouch and being attached in fixed relation to the opening.
  • the base is in sealing connection with the opening, such that liquid contained in the pouch passes through the flexible pouch opening and through the base elongated axial through-passage.
  • the spout further comprises a top end having an elongated axial through-passage in fluid connection with the base elongated axial through-passage; it also serves as a discharge passage for the liquid urea solution.
  • the top end of the spout is insertable into the inside passage of the filling neck of the liquid urea solution vehicle tank for the filling of the liquid urea solution tank.
  • the spout further comprises a body that extends between the base end and the top end of the spout, that has an elongated shape, that has an elongated through-passage in fluid connection with base and top end elongated axial through-passages; it serves also as a discharge passage for the liquid urea solution.
  • the spout body is configured to at least partially extend into the inside passage of the tank filling neck for the filling of the liquid urea solution tank.
  • the body of the spout thus has an elongated shape.
  • elongated means "having a length that is greater than the width”. Reference to an axial length or direction refers to the longer length of the elongated shape. This elongated shape of the spout ensures that during filling, not only the top end of the spout is located into the tank filling neck but also part of the body or the whole body.
  • the spout body has an elongated shape, during the insertion of the spout into the tank filling neck, the spout is guided into the tank filling neck. This allows an easy insertion of the spout into the tank filling neck.
  • liquid urea solution is prevented from running out of the filling neck of the liquid urea solution tank during the filling process, also reducing or even removing the spillage risk.
  • the spout is made in one piece.
  • the base, the body and the top end are non-releasably connected to each other.
  • the body of the spout has a lower end that is connected to the base of the spout and an upper end that is connected to the top of the spout, wherein the body has one or more regions of gradual diameter reduction from the lower end to the upper end thereof.
  • the body may contain one or more regions that are tapered, the wider end of the taper being towards the lower end of the body.
  • the gradually decreasing diameter assists in easy insertion into the tank filling neck and furthermore that the spout has a shape such that it fits adequately into the tank filling neck.
  • the body of the spout is divided over its length in a first body part and a second body part.
  • the first and second body parts may each contain a region of gradual diameter reduction from the lower end to the upper end, a graduality of diameter reduction in the second body part being greater than that in first body part.
  • the decrease in diameter of the second body part towards the upper end of the body of the spout may be larger than the decrease in diameter of the first body part starting from the lower end of the body of the spout.
  • This form of the spout is suitable for an easy insertion of the spout into the tank filling neck and for fitting in an appropriate way into the tank filling neck during the filling of the liquid urea solution tank of the vehicle.
  • a further disadvantage of the pouch as commercialized by BASF is its overall design with the short spout centered at the top of the pouch, which in itself, combined with the heavier weight of the 5 liter content, would make it less easy to handle and therefore make accidental spillage more likely.
  • this design makes the packaging properties of the pouch less efficient throughout the supply chain as it takes up more space, both in transport cartons and on-shelf at point of sale, thereby causing costly inefficiencies both from a cost and environmental perspective.
  • a pouch assembly comprising a flexible pouch and a spout
  • the wall of the flexible pouch comprises a first part that includes the opening into which the base of the spout is integrated, this part being planar and obliquely arranged with respect to a horizontal plane when the pouch assembly is considered in an upright (stand-up) position.
  • the horizontal plane may be parallel to a base of the flexible pouch, which base is essentially flat providing a standing support.
  • This planar and oblique first part of the wall of the flexible pouch assists in ease of tilting of the flexible pouch towards the liquid urea solution tank of the vehicle in order to transfer liquid therefrom and is in an ideal position during the transfer of liquid to the liquid urea solution tank.
  • the flexible pouch is configured such that the spout is attached to the first part of the flexible pouch wall, this first part disposed between adjacent second and third parts of the flexible pouch wall, wherein each of the first, second and third parts are oriented such that fictive planes contacting and extending from each of the first, second and third parts intersect to form a geometric space.
  • the geometric space may have a triangular profile (cross section).
  • the geometric space may have triangular prism shape.
  • the flexible pouch has an essentially cuboid shape, wherein the spout is disposed on a chamfered edge between two faces, and the geometric space is formed by the intersection of fictive planes contacting and extending from each of the chamfered edges and the faces.
  • the outer body of the spout and/or the top end of the spout have an essentially cylindrical outer shape.
  • the diameter of the cylinder may or may not be uniform as a function of its length.
  • the shape of the tank filling neck is also cylindrical, it is most convenient that also the body of the spout and most likely also the top end of the spout have a cylindrical outer shape.
  • the body of the spout extends completely into the inside passage of the filling neck of the liquid urea solution tank of the vehicle when the spout is inserted into the filling neck for filling the vehicle tank at least partially with the liquid urea solution contained in the pouch.
  • the spout and the cap are each provided with a co-operating screw thread for repeatable releasable attachment of the screw the cap to the spout.
  • the cap is provided with a tamper-evidence ring that maintains connection with the cap when the cap is unscrewed from the spout. This removes the risk that the tamper-evidence ring could accidentally fall off the spout and into the liquid urea solution tank during the filling thereof.
  • the spout body has a length that is between 5 and 10 times the length of the base of the spout.
  • the body has a length that is between 2 and 6 times the length of the top end of the spout.
  • the first body part has a length that is between 0.5 and 2 times the length of the second body part of the spout.
  • a system for treating the exhaust gases of an internal combustion of a vehicle using a liquid urea solution comprising:
  • a system for treating the exhaust gases of an internal combustion of a vehicle using a liquid urea solution comprising a liquid urea solution tank located in the vehicle, the liquid urea solution tank having a tank filling neck for filling the tank with liquid urea solution from the outside of the liquid urea solution tank, and a pouch assembly for containing a liquid that is an aqueous urea solution for use in a selective catalytic reduction system for treating the exhaust gases of an internal combustion engine of a vehicle and for transferring the liquid to a liquid urea solution tank of the vehicle from the outside of the liquid urea solution tank with liquid urea solution contained in the pouch, the pouch assembly comprising a flexible pouch and a spout attached thereto wherein which at least a part of the pouch extends outside the flexible pouch and that is arranged to dispense liquid urea solution contained in the flexible pouch out of the flexible pouch into the liquid urea solution tank of the vehicle via the tank filling neck
  • the system comprises a flexible pouch according to the application as described above.
  • the terms "one or more” or “at least one”, such as one or more or at least one member(s) of a group of members, is clear per se, by means of further exemplification, the term encompasses inter alia a reference to any one of the members, or to any two or more of the members, such as, e.g., any ⁇ 3, ⁇ 4, ⁇ 5, ⁇ 6 or ⁇ 7 etc. of the members, and up to all the members.
  • the flexible pouch assembly comprises a spout operably connected to flexible pouch for holding a liquid urea solution and more in particular AUS32 that is a (32.5 ⁇ 0.7) weight% urea solution in demineralized water, complying with the ISO 22241 standard.
  • This liquid urea solution is used in a selective catalytic reduction system (SCR) system for treating the exhaust gases of an internal combustion engine of a vehicle.
  • SCR selective catalytic reduction system
  • the pouch assembly (100) comprises a flexible pouch (1) that comprises a wall (11) extending around the flexible pouch (1).
  • This wall (11) surrounds a cavity (12) that is able to contain the liquid that is an aqueous urea solution.
  • the wall (11) may be divided into one or more faces.
  • the faces may be essentially planar.
  • the flexible pouch (1) may have an essentially cuboid shape. One or more of the cuboid edges or vertices may be chamfered. The chamfer may be essentially planar.
  • FIG. 1 illustrates two adjoining faces (113) and (114) of the wall (11) having a planar chamfered edge (112).
  • the flexible pouch (1) has a base end (15) and a upper end (14), the base end (15) providing a support for maintaining an upright position of the pouch assembly (100).
  • the pouch assembly (100) is further provided with a spout (2).
  • the spout (2) is configured for pouring out the liquid content of the flexible pouch (1) and is attached to the flexible pouch (1).
  • the spout (2) is disposed toward the upper end (14) of the flexible pouch (1).
  • the spout (2) may be attached to a chamfered edge of the pouch wall (1) which chamfered edge is between a top face and a side face of the pouch wall (11).
  • the spout (2) is provided with a base (21) that is fully integrated into and attached to an opening (111), more specifically a slot-like opening, that is arranged in the wall (11) of the flexible pouch 1.
  • the base (21) has an elongated axial through-passage (211) that serves as a discharge opening for the liquid urea solution that is contained in the cavity (12) of the flexible pouch (1).
  • the base (21) elongated axial through-passage (211) is in fluid connection with the flexible pouch cavity (12).
  • the base (21) may have an outer profile that is larger than that of the body (23) or of the top end (22).
  • the base (21) may be provided with an outer profile having a horizontal cross section (B) (see FIG. 3 ) with an almond shape.
  • the spout (2) further comprises a front or top end (22) that is situated at the opposite end of the base (21).
  • the top end (22) has an elongated axial through-passage (221) that serves as a discharge opening for the liquid urea solution towards the outside or exit of the spout (2).
  • the top end (22) elongated axial through-passage (221) is in fluid connection with the base (21) elongated axial through-passage (211).
  • the top end (22) elongated axial through-passage (221) is in fluid connection with the flexible pouch cavity (12).
  • the top end (22) may be disposed with an exterior or interior thread (222) for attachment to a cap (24).
  • the top end (22) may have transverse (perpendicular to a longitudinal central axis (X) of the spout(2)) cross-sectional profile that is smaller than the minimum cross-sectional profile of the body (23).
  • the top end (22) may have an outer diameter smaller than the minimum diameter of the body (23).
  • the top end (22) may have an essentially circular outer profile.
  • a body (23) extends between the base (21) and the top end (22).
  • This body (23) has an elongated shape and has an elongated axial through-passage (231) to serve as a discharge passage for the liquid urea solution.
  • the elongated axial through-passage (231) is in fluid connection with base (21) and top end (22) elongated axial through-passages (211, 221).
  • the body (22) elongated axial through-passage (231) is in fluid connection with the flexible pouch cavity (12).
  • the body (23) may have a length L 1 that is between 4 and 12 times the length L 2 of the base (21). More specifically, the body (23) may have a length L 1 that is between 5 and 10 times, and most specifically around 6 times the length L 2 of the base 21. The respective lengths are measured parallel to a longitudinal central axis (X) of the spout (2).
  • the body (23) may have a length L 1 that is between 2 and 6 times the length L 3 of the top end (22). More specifically, the body (23) may have a length L 1 that is between 2 and 5 times, and most specifically around 3 times the length L 3 of the top end (22). The respective lengths are measured parallel to a longitudinal central axis (X) of the spout (2).
  • the base (21) is integrated into the wall (11) of the flexible pouch (1), and the body (23) and the top end (22) are disposed on the outside of the pouch (1), it can be stated that at least a part of the spout (2) extends outside the flexible pouch (1).
  • integrated it is meant that the base (21) at least partly passes through the wall (11) of the flexible pouch (1).
  • the base (21) is attached to the flexible pouch wall (11) to form a liquid impermeable sealing connection.
  • the spout (2) may be made from one piece, meaning that the base (21), the body (23) and the top end (22) may be inseparably connected to each other, for instance they may be non-releasably connected to each other.
  • the production processes are available to ensure a one piece construction of the spout (2), for instance, injection moulding.
  • the filling tank of the vehicle (not shown on the drawings) is provided with a tank filling neck (3) having an inside passage (31), as shown for instance in FIG. 6 .
  • the top end (22) of the spout (2) as well as at least part of the body (23), and more particular the complete body (23) of the spout (2), extends into the inside passage (31) of the tank filling neck (3).
  • the spout (2) may be configured such that at least part of the body (23), and more particular the complete body (23) of the spout (2), engages with the inside passage (31) of the tank filling neck (3).
  • the liquid urea solution contained in the flexible pouch (1) will flow through the through-passage (211) of the base 21, through the through-passage (223) of the body (23), through the through-passage (221) of the top end (22) into the tank filling neck (3), and finally into the liquid urea solution tank.
  • the top end (22) of the spout (2) is releasably closable by a cap (24) as shown, for instance in FIGs. 2 to 5 .
  • the top end (22) of the spout (2) may be repeatably releasably closable by the cap (24).
  • the spout top end (22) may be configured for coupling to a cap (24) for the releasable closure of the spout (2) by the cap (24).
  • the top end (22) of the spout (2) and the cap (24) may be provided with a corresponding or co-operating screw thread (222) and (241) to screw the cap (24) on and off the top end (22) of the spout (2) - in other words for releasable closure of the spout (2).
  • the body (23) is particularly unthreaded.
  • the cap (24) may be provided with a tamper-evidence ring (242) which stays connected to the cap (24) (and not to the spout 2) when the cap (24) is unscrewed from the spout (2).
  • the tamper-evidence ring (242) may be at least partly rigidly connected to the cap (24).
  • the tamper-evidence ring (242) may be non-releasably connected to the cap (24).
  • the base (21) of the spout (2) is welded directly in the opening (111) provided in the wall (11) of the flexible pouch (1) via, for example, a thermal weld. In this way, the base (21) is permanently attached to the opening (111).
  • the flexible pouch (1) together with the spout (2) are formed essentially of one piece, benefiting the handling of the flexible pouch (1) with spout (2) i.e. the pouch assembly (100).
  • a permanent connection between the base (21) and the opening (111) may also be produced by other methods of heat transport such as hot sealing or adhesive bonding.
  • the base (21) is in a material that is compatible with the material of the flexible pouch (1).
  • the base (21) has a number of welding ribs or fins (212) that are axially spaced from each other and that are formed as one piece with the remainder of the base (21), as shown for instance, in FIGs 2 and 4 .
  • Such fins (212) are disposed on the outside of the base.
  • These welding fins (212) protrude outwardly from the outer surface of the base (21) and extend around the outer surface of the base (21).
  • the fins (212) may have an essentially annular form.
  • the body (23) of the spout (2) is disposed with a ring-shaped (annular) protrusion (23c) extending at least partially around a circumference of the outer body of the spout (2), and wherein the tank filling neck (3) may have on the inside passage (31) disposed with at least one protrusion (32) configured to co-operate with the spout ring-shaped protrusion (23c) for releasable latching of the spout in the tank filling neck (3).
  • the latching connection fixes the body (23) of the spout (2) and the tank filling neck (3) in slidable relation which can be overcome by the application of addition sliding force.
  • the latching together and/or apart of the parts may be accompanied by a "click" sound indicative of the ring-shaped protrusion (23c) sliding past the protrusion (32) disposed in the inside passage (31) of the tank filling neck (3).
  • the body (23) of the spout (2) may be provided with a ring-shaped protrusion (23c) that extends at least partially around the circumference of the body (23), and optionally completely around the circumference of the body 23, as shown for instance, in FIGs 4 and 5 .
  • the tank filling neck 3 may have on the inside passage (31) thereof:
  • FIG. 6 An exemplary filling tank neck is shown in FIG. 6 .
  • Each of these protrusions (32) may have a latching edge (321) ( FIG. 6 ).
  • the latching edge (321) is an edge of the protrusion (32) most distance from an entry to the tank filling neck (3); it engages with the ring-shaped protrusion (23c) to limit movement of the spout (2) relative to the neck (3).
  • the latching edge (321) may be bevelled relative to the wall of the neck inner passage (31).
  • the ring-shaped protrusion (23c) clicks again over the latching edge (321) of one or more protrusions (32) through which the spout (2) can be released out of the tank filling neck (3) again.
  • the ring-shaped protrusion (23c) of the body (23) is arranged to releasable click over the latching edge (321) of the one or more protrusions (32) that are provided in and are protruding in the inside (31) of the tank filling neck (3).
  • the ring-shaped protrusion (23c) is such that clicking of the ring-shaped protrusion (23c) over the under-edge (321) of the ribs (32) allows that the spout (2) can easily be put in and taken out again of the tank filling neck (3).
  • the body (23) of the spout (2) may have a lower end (232) that is connected to the base (21) of the spout (2) and an upper end (233) that is connected to the top end (22) of the spout (2) as shown, for instance, in FIGs. 2 to 5 .
  • the body (23) may have a diameter that decreases gradually from the lower end (232) to the upper end (233) thereof.
  • the body (23) may have one or more regions of gradual diameter reduction from the lower end (232) to the upper end (233) thereof. In other words, the body (23) may contain one or more regions that are tapered, the wider end of the taper being towards the lower end (232) of the body (23).
  • the body (23) of the spout (2) may be divided over its length in a first body part (23a) and a second body part (23b) that are in connection to each other and each have a diameter that decreases gradually from the lower end (232) to the upper end (233) of the spout (2).
  • the decrease in diameter of the second body part (23b) towards the front side (233) of the body (23) may be bigger than the decrease in diameter of the first body part (23a) starting from the lower end (232) of the body (23).
  • a ring-shaped protrusion (23c) may divide the body (23) of the spout (2) into a first body part (23a) extending between the lower end (232) of the body (23) and the ring-shaped protrusion (23c), and a second body part (23b) extending between the ring-shaped protrusion (23c) and the upper end (233) of the body (23) of the spout (2) as shown for instance in FIGs. 2 and 3 .
  • the decrease in diameter of the second body part (23b) from the ring-shaped protrusion (23c) towards the front side (233) of the body (23) is bigger than the decrease in diameter of the first body part (23a) from the lower end (232) of the body (23) towards the ring-shaped protrusion (23c).
  • the first (23a) and second (23b) body parts may each contain a region of gradual diameter reduction from the lower end (232) to the upper end (233).
  • a graduality of diameter reduction in the second body part (23b) may be greater than that in first body part (23a).
  • the graduality refers to a gradient i.e. to a rate of change of diameter as a function of body length.
  • the maximum diameter in the first body part (23a) in the region of gradual diameter reduction may be greater than the maximum diameter in the second body part (23b) in the region of gradual diameter reduction.
  • the maximum diameter in the first body part (23a) in the region of gradual diameter reduction may be equal to or greater than the minimum diameter in the second body part (23b) in the region of gradual diameter reduction.
  • the first body part (23a) may have a length L 11 that may be between 0.5 and 2 times the length L 12 of the second body part (23b) of the spout (2). More specifically, the first body part (23a) has a length L 11 that may be between 0.8 to 1.5 times, and most specifically around 1.2 times the length L 12 of the second body part (23b). The respective lengths are measured parallel to a longitudinal central axis (X) of the spout (2).
  • the body of the spout (2) and/or the top end (22) of the spout (2) have a tubular shape, specifically a cylindrical shape.
  • the diameter of the cylinder may or may not be uniform as a function of its length; as mentioned earlier it may contain one or more regions of gradually changing diameter.
  • the spout (2) may have another shape, but with the condition that the top end (22) and at least a part of the base (21) of the spout (2), more particularly the whole body (23) of the spout (2), is insertable into the filling neck of the vehicle tank.
  • vapours that are released during the filling of the liquid urea solution tank can still escape from the tank filling neck (3).
  • the wall (11) of the pouch (1) comprises a first part (112) that is provided with the opening (111) into which the base (21) of the spout (2) is integrated, this part being essentially planar and obliquely arranged with respect to a horizontal plane when the flexible pouch (1) is considered in an upright position.
  • An upright position is typically when the spout (2) is oriented upwards.
  • the horizontal plane may be parallel to a base of the flexible pouch (1) which base is essentially flat providing a upright-standing support.
  • this first part (112) is more specifically inclined at an angle ⁇ of between 30° and 60° in view of the horizontal plane (A) when the flexible pouch (1) is considered in an upright position. More specifically, the first part (112) may be inclined under at angle ⁇ of around 45° in view of the horizontal plane A when the flexible pouch (1) is considered in an upright position.
  • the flexible pouch assembly (100) is configured such that the spout (2) is attached to a first part (112) of the flexible pouch wall (11) the first part (112) disposed between adjacent or adjoining second part (113) and third part (114) of the flexible pouch wall (11) wherein each of the first (112), second (113) and third (114) parts are oriented such that fictive planes contacting and parallel to and extending from each of the first (112), second (113) and third (114) parts outer surface intersect to form a geometric space (14).
  • the geometric space (14) may have a triangular profile (cross section).
  • the geometric space (14) may have triangular prism shape.
  • the top end of the spout more specifically the top end of the spout together with the cap, even more specifically, the body of the spout together with the cap are contained within the geometric space.
  • the second part (113) may be a top face of the flexible pouch (1) and the third part (114) may be a side face of the flexible pouch (1).
  • the flexible pouch (1) wall (11) comprises two side walls joined by an edge wall; the first part (112), second part (113) the third part (114) may disposed on the edge wall.
  • the flexible pouch (1) has an essentially cuboid shape, wherein the spout is disposed on a chamfered edge between two faces, and the geometric space is formed by the intersection of fictive planes contacting, parallel to and extending from the outer surface of each of the chamfered edge and the faces.
  • the chamfer may be essentially planar.
  • the two faces correspond to the second (113) and third (114) parts and the chamfered edge corresponds to the first part (112).
  • the first part (112) of the flexible pouch (1) wall (11) has an outer side (1123), and at a first end (1121) thereof is connected to the second part (113) of the pouch wall (11), and at second, opposite end (1122) thereof is connected to a third part (114) of the pouch wall (11).
  • This second part (113) has an outer side (1131) and this third part (114) has an outer side (1141).
  • the imaginary extension (1132) of the outer side (1131) of the second part (113) and the imaginary extension (1142) of the outer side (1141) of the third part 114 are considered, these form an imaginary triangular space (14).
  • the flexible pouch (1) may be formed from two or more adjacent film-like sheets of a plastic material that are sealed to each other by means of heat sealing.
  • Each of the sheets may be made from the same or from different materials focussing on different necessary properties such as printing precision properties, protrusion protection properties, sealing properties, etc.
  • the sheets are made from a thermal plastic material that are heat sealed to each other at their respective outer edges thereby forming the wall (11) of the flexible pouch (11) that encloses the cavity (12).
  • a seal runs around edge of the wall, in particular across a face of the first part (112) of the wall (11)
  • the pouch assembly (100) may be provided with a handle (13).
  • the handle may be disposed within a chamfered edge of the flexible pouch (1).
  • the chamfered edge may be disposed opposite the spout on an upper side of the flexible pouch (1)as shown for instance, in FIG. 1 .
  • This handle (13) may be integrated into the surface of the flexible pouch (1) and surrounded by the parts (118), (119), (120) and (113) of the wall (11) of the flexible pouch (1).
  • the handle (13) may be provided with a number of holes (131), for instance three as shown for instance in FIG. 1 , that each are accommodated to receive a finger of the user.
  • This handle (13) enables an easy and comfortable handling of the pouch assembly (100). It allows that the pouch assembly (100) can easily be carried by the end user thereof and allows that it is easy to put the spout (2) into the filling neck of the liquid urea solution tank of the vehicle.
  • the pouch assembly (100) may be provided with a number of supporting flaps at a base of the flexible pouch (1) as shown for instance in FIG. 1 .
  • At the left side of the flexible pouch (1) there may be provided two supporting flaps (12a), one at the front and one at the back of the flexible pouch (1)
  • At the right side of the flexible pouch (1) there may also be provided supporting flaps (12b), also one at the back and one at the front of the flexible pouch (1).
  • These supporting flaps (12a) and (12b) allow the flexible pouch (1) to remain upright when the flexible pouch (1) is filled and in an upright position.
  • the supporting flaps (12a) and (12b) may be integrated into the surface of the flexible pouch (1).
  • the left supporting flaps (12a) are surrounded by the parts (115), (114) and (116) of the wall (11) of the pouch (1).
  • the right supporting flaps (12b) are surrounded by the parts (115), (117) and (118) in FIG. 1 .
  • a system for treating the exhaust gases of an internal combustion of a vehicle using a liquid urea solution, the system comprising
  • the flexible pouch (1) with spout (2) i.e. the pouch assembly (100) as described above is particularly suitable to be used for filling the liquid urea solution tank of a passenger vehicle, however not excluding that it also can be used for filling the liquid urea solution tank of other vehicles.
  • the flexible pouch (1) with spout (2) i.e. the pouch assembly (100) as described above fulfills the specifications as outlined in the ISO 22241-5 norm.
  • the flexible pouch (1) with spout (2) as described above has a simple design, a limited production cost, a limited weight and a limited plastic content.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
EP16154333.5A 2016-02-04 2016-02-04 Ensemble de poche pour contenir une solution d'urée liquide destiné à être utilisé dans un système de réduction catalytique sélective pour traiter les gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule à l'aide de la solution d'urée liquide Withdrawn EP3202684A1 (fr)

Priority Applications (39)

Application Number Priority Date Filing Date Title
EP16154333.5A EP3202684A1 (fr) 2016-02-04 2016-02-04 Ensemble de poche pour contenir une solution d'urée liquide destiné à être utilisé dans un système de réduction catalytique sélective pour traiter les gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule à l'aide de la solution d'urée liquide
ES17706167T ES2787280T3 (es) 2016-02-04 2017-02-03 Montaje de bolsa para mantener una solución acuosa de urea para uso en un sistema SCR para tratar los gases de escape de un motor de combustion interna de un vehiculo y sistema para tratar los gases de escape de un motor de combustion interna de un vehiculo usando la solucion acuosa de urea
AU2017216287A AU2017216287B2 (en) 2016-02-04 2017-02-03 Pouch assembly for holding an aqueous urea solution for use in an SCR system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
DK17706168.6T DK3411306T3 (da) 2016-02-04 2017-02-03 Poseindretning til at holde en vandig urinstofopløsning til anvendelse i et scr-system til behandling af udstødningsgasserne fra en forbrændningsmotor i et køretøj og system til behandling af udstødningsgasser fra en forbrændningsmotor i et køretøj ved anvendelse af den vandige urinstofopløsning
BR112018014517-3A BR112018014517B1 (pt) 2016-02-04 2017-02-03 Montagem de bolsa para reter uma solução de ureia aquosa para uso em um sistema de scr para tratar os gases de escape de um motor de combustão interna de um veículo e sistema para tratar os gases de escape de um motor de combustão interna de um veículo com o uso da solução de ureia aquosa
US16/069,905 US10829287B2 (en) 2016-02-04 2017-02-03 Pouch assembly for holding an aqueous urea solution for use in an SCR system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
AU2017214443A AU2017214443B2 (en) 2016-02-04 2017-02-03 Pouch assembly for holding an aqueous urea solution for use in an scr system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
CA3010984A CA3010984C (fr) 2016-02-04 2017-02-03 Ensemble de poche concu pour contenir une solution d'uree aqueuse destinee a etre utilisee dans un systeme scr de traitement des gaz d'echappement d'un moteur a combustion interne d'un vehicule et systeme de traitement des gaz d'echappement d'un moteur a combustion interne d'un vehicule au moyen d'une solution d'uree aqueuse
PL17706167T PL3411305T3 (pl) 2016-02-04 2017-02-03 Zespół worka do przechowywania wodnego roztworu mocznika do zastosowania w systemie SCR do oczyszczania spalin z silnika pojazdu o spalaniu wewnętrznym i układ do oczyszczania spalin z silnika pojazdu o spalaniu wewnętrznym za pomocą wodnego roztworu mocznika
ES17706168T ES2886589T3 (es) 2016-02-04 2017-02-03 Montaje de bolsa para mantener una solución acuosa de urea para uso en un sistema SCR para tratar los gases de escape de un motor de combustión interna de un vehículo y sistema para tratar los gases de escape de un motor de combustión interna de un vehículo usando la solución acuosa de urea
PL17706168T PL3411306T3 (pl) 2016-02-04 2017-02-03 Zespół worka do przechowywania wodnego roztworu mocznika do zastosowania w systemie SCR do oczyszczania spalin z silnika o spalaniu wewnętrznym pojazdu i układ do oczyszczania spalin z silnika o spalaniu wewnętrznym pojazdu za pomocą wodnego roztworu mocznika
PCT/EP2017/052467 WO2017134277A1 (fr) 2016-02-04 2017-02-03 Ensemble poche conçu pour contenir une solution d'urée aqueuse destinée à être utilisée dans un système scr de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule utilisant la solution d'urée aqueuse
JP2018539857A JP2019510154A (ja) 2016-02-04 2017-02-03 乗物の内燃機関の排ガスを処理するｓｃｒシステムで使用する尿素水溶液を収容するポーチアセンブリと、尿素水溶液を使用して乗物の内燃機関の排ガスを処理するシステム
DK17706167.8T DK3411305T3 (da) 2016-02-04 2017-02-03 Poseindretning til at holde en vandig urinstofopløsning til brug i et scr-system til behandling af udstødningsgasser i en forbrændingsmotor til et køretøj og system til behandling af udstødningsgasser fra en forbrændingsmotor til et køretøj ved brug af den vandige urinstofopløsning
RU2018129779A RU2715716C1 (ru) 2016-02-04 2017-02-03 Пакет в сборе для содержания водного раствора мочевины для применения в системе селективного каталитического восстановления для обработки выхлопных газов двигателя внутреннего сгорания транспортного средства и система для обработки выхлопных газов двигателя внутреннего сгорания транспортного средства с использованием водного раствора мочевины
EP17706168.6A EP3411306B1 (fr) 2016-02-04 2017-02-03 Ensemble poche contenant une solution d'urée liquide destiné à être utilisé dans un système de réduction catalytique sélective pour traiter les gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule à l'aide de la solution d'urée liquide
JP2018539911A JP6925348B2 (ja) 2016-02-04 2017-02-03 乗物の内燃機関の排ガスを処理するｓｃｒシステムで使用する尿素水溶液を収容するポーチアセンブリと、尿素水溶液を使用して乗物の内燃機関の排ガスを処理するシステム
CA3010976A CA3010976C (fr) 2016-02-04 2017-02-03 Ensemble poche concu pour contenir une solution d'uree aqueuse destinee a etre utilisee dans un systeme scr de traitement des gaz d'echappement d'un moteur a combustion interne d' un vehicule et systeme de traitement des gaz d'echappement d'un moteur a combustion interne d'un vehicule utilisant la solution d'uree aqueuse
BR112018014516-5A BR112018014516B1 (pt) 2016-02-04 2017-02-03 Montagem de bolsa para reter uma solução de ureia aquosa para uso em um sistema de scr para tratar os gases de escape de um motor de combustão interna de um veículo e sistema para tratar os gases de escape de um motor de combustão interna de um veículo com o uso da solução de ureia aquosa
US16/070,004 US10787299B2 (en) 2016-02-04 2017-02-03 Pouch assembly for holding an aqueous urea solution for use in an SCR system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
NZ743189A NZ743189B2 (en) 2017-02-03 Pouch assembly for holding an aqueous urea solution for use in an scr system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
KR1020187021250A KR20180108609A (ko) 2016-02-04 2017-02-03 차량의 내연 기관의 배기 가스를 처리하기 위한 scr 시스템에서 사용하기 위한 수성 요소 용액을 보유하기 위한 주머니 조립체, 및 수성 요소 용액을 사용하여 차량의 내연 기관의 배기 가스를 처리하기 위한 시스템
NZ743120A NZ743120A (en) 2016-02-04 2017-02-03 Pouch assembly for holding an aqueous urea solution for use in an scr system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
RU2018129778A RU2715950C1 (ru) 2016-02-04 2017-02-03 Пакет в сборе для содержания водного раствора мочевины для применения в системе селективного каталитического восстановления для обработки выхлопных газов двигателя внутреннего сгорания транспортного средства и система для обработки выхлопных газов двигателя внутреннего сгорания транспортного средства с использованием водного раствора мочевины
PCT/EP2017/052465 WO2017134276A1 (fr) 2016-02-04 2017-02-03 Ensemble de poche conçu pour contenir une solution d'urée aqueuse destinée à être utilisée dans un système scr de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule au moyen d'une solution d'urée aqueuse
PT177061678T PT3411305T (pt) 2016-02-04 2017-02-03 Montagem de bolsa para reter uma solução de ureia aquosa para uso num sistema de scr para tratar os gases de escape de um motor de combustão interna de um veículo e sistema para tratar os gases de escape de um motor de combustão interna de um veículo usando a solução de ureia aquosa
CN201780007155.XA CN108602601B (zh) 2016-02-04 2017-02-03 袋组件和用于处理车辆内燃机废气的系统
CN201780008531.7A CN108602602B (zh) 2016-02-04 2017-02-03 袋组件以及用于处理车辆的内燃机的废气的系统
HUE17706168A HUE056102T2 (hu) 2016-02-04 2017-02-03 Tasak-összeállítás vizes karbamid oldat tárolására egy SCR rendszerben való alkalmazáshoz, egy jármû belsõ égésû motorjának a kipufogógázainak kezelésére, és rendszer egy jármû belsõ égésû motorjának a kipufogógázainak vizes karbamid oldat alkalmazásával történõ kezelésére
HUE17706167A HUE049900T2 (hu) 2016-02-04 2017-02-03 Tasak-összeállítás vizes karbamid oldat tárolására egy SCR rendszerben való alkalmazáshoz egy jármû belsõ égésû motorjának a kipufogógázainak kezelésére, és rendszer egy jármû belsõ égésû motorjának a kipufogógázainak kezelésére vizes karbamid oldat alkalmazásával
KR1020187021249A KR20180108608A (ko) 2016-02-04 2017-02-03 차량의 내연 기관의 배기 가스를 처리하기 위한 scr 시스템에서 사용하기 위한 수성 요소 용액을 보유하기 위한 주머니 조립체, 및 수성 요소 용액을 사용하여 차량의 내연 기관의 배기 가스를 처리하기 위한 시스템
EP17706167.8A EP3411305B1 (fr) 2016-02-04 2017-02-03 Ensemble poche contenant une solution d'urée liquide destiné à être utilisé dans un système de réduction catalytique sélective pour traiter les gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule à l'aide de la solution d'urée liquide
CL2018001794A CL2018001794A1 (es) 2016-02-04 2018-06-29 Ensamble de bolsa para mantener una solución acuosa de urea para uso en un sistema scr para tratar los gases de escape de un motor de combustion interna de un vehiculo y sistema para tratar los gases de escape de un motor de combustion interna de un vehiculo que utiliza la solucion acuosa de urea
ZA2018/04711A ZA201804711B (en) 2016-02-04 2018-07-13 Pouch assembly for holding an aqueous urea solution for use in an scr system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
ZA2018/04712A ZA201804712B (en) 2016-02-04 2018-07-13 Pouch assembly for holding an aqueous urea solution for use in an scr system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution
CONC2018/0007532A CO2018007532A2 (es) 2016-02-04 2018-07-18 Conjunto de bolsa para contener una solución acuosa de urea para uso en un sistema scr para tratar los gases de escape de un motor de combustión interna de un vehículo y sistema para tratar los gases de escape de un motor de combustión interna de un vehículo utilizando la solución acuosa de urea
CONC2018/0007538A CO2018007538A2 (es) 2016-02-04 2018-07-18 Ensamble de bolsa para mantener una solución acuosa de urea para uso en un sistema scr para tratar los gases de escape de un motor de combustion interna de un vehiculo y sistema para tratar los gases de escape de un motor de combustion interna de un vehiculo que utiliza la solucion acuosa de urea
CL2018001990A CL2018001990A1 (es) 2016-02-04 2018-07-23 Conjunto de bolsa para contener una solución acuosa de urea para uso en un sistema scr para tratar los gases de escape de un motor de combustión interna de un vehículo y sistema para tratar los gases de escape de un motor de combustión interna de un vehículo utilizando la solución acuosa de urea.
US17/029,738 US11167902B2 (en) 2016-02-04 2020-09-23 Pouch assembly for holding an aqueous urea solution for use in an SCR system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16154333.5A EP3202684A1 (fr) 2016-02-04 2016-02-04 Ensemble de poche pour contenir une solution d'urée liquide destiné à être utilisé dans un système de réduction catalytique sélective pour traiter les gaz d'échappement d'un moteur à combustion interne d'un véhicule et système de traitement des gaz d'échappement d'un moteur à combustion interne d'un véhicule à l'aide de la solution d'urée liquide

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