EP3309381B1 - Refroidisseur de gaz d'échappement récirculés pour un moteur à combustion interne - Google Patents

Refroidisseur de gaz d'échappement récirculés pour un moteur à combustion interne Download PDF

Info

Publication number
EP3309381B1
EP3309381B1 EP17192019.2A EP17192019A EP3309381B1 EP 3309381 B1 EP3309381 B1 EP 3309381B1 EP 17192019 A EP17192019 A EP 17192019A EP 3309381 B1 EP3309381 B1 EP 3309381B1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
coolant
gas recirculation
flow
recirculation cooler
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.)
Active
Application number
EP17192019.2A
Other languages
German (de)
English (en)
Other versions
EP3309381A1 (fr
Inventor
Oliver Grill
Helmut Weiser
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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
Priority claimed from DE102017206201.0A external-priority patent/DE102017206201A1/de
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP3309381A1 publication Critical patent/EP3309381A1/fr
Application granted granted Critical
Publication of EP3309381B1 publication Critical patent/EP3309381B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/028—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation

Definitions

  • the invention relates to an exhaust gas recirculation cooler for an internal combustion engine, in particular a motor vehicle according to the preamble of claim 1.
  • the exhaust gas is cooled in an exhaust gas recirculation cooler, which is subsequently fed to combustion chambers of an internal combustion engine again together with the combustion air.
  • the exhaust gas recirculation coolers are used in motor vehicles with diesel engines in order to reduce exhaust gas emissions by returning the cooled exhaust gas to the combustion chambers.
  • cooling tubes are arranged in a row in a housing to form a tube bundle.
  • the cooling tubes are mostly made of stainless steel winglet tubes, in which flow obstacles for better heat transfer are integrally formed - for example by stamping.
  • the exhaust gas flows through the winglet tubes and is cooled by a coolant flowing in the housing.
  • An exhaust gas inlet and an exhaust gas outlet are generally each provided by a diffuser, the respective diffuser being connected to the housing and forming an interface to the customer connection.
  • DE 196 54 366 A1 discloses, for example, cooling pipes with flow obstacles on the wall of the cooling pipe are attached.
  • DE 10 2010 008 176 B4 and DE 11 2013 004 680 T5 disclose turbulence inserts that are arranged around the cooling tubes.
  • DE 199 61 284 A1 discloses a wire wall element that encases a tube and creates a turbulent flow around it.
  • DE 10 2009 038 643 A1 and DE 10 2007 005 370 A1 disclose cooling tubes with integral flow obstacles and inserts that can be arranged between the cooling tubes. Flow obstacles and turbulence inserts can influence the flow in the tube bundle or in the cooling tubes and improve the heat transfer between exhaust gas and coolant.
  • WO 2015/121148 A1 further discloses a deflection element which is arranged in the coolant inlet and specifically directs the coolant to the exhaust gas inlet.
  • DE 32 12 914 A1 discloses deflection elements which are arranged in the tube bundle between two stacks of the respective cooling tubes.
  • DE 10 2010 001 635 A1 discloses a wire deflector. US 2013/0327499 A1 discloses an alternative embodiment of the deflection elements. The deflection elements can prevent the coolant from flowing out of the tube bundle too quickly.
  • US 2015/0260466 A1 JP 2014-194296 A and DE 10 2014 208 259 A1 disclose generic exhaust gas recirculation coolers, each having a flow control structure.
  • the flow guide structure engages from the annular space in the tube block and is additionally fixed to the tube block.
  • a ring structure is provided, on which the flow structure is clamped.
  • the flow control structures direct the coolant between the individual rows of pipes and thereby improve the heat transfer between the exhaust gas and the coolant.
  • Disadvantageous catfish such flow control structures significantly increase the cost of the exhaust gas recirculation cooler and are also not modular.
  • the object of the invention is therefore to provide an exhaust gas recirculation cooler in which a longer and uniform exposure of the tube bundle to the coolant is made possible by an inexpensive and simple flow guide structure, and thereby the heat transfer between the coolant and the exhaust gas is improved.
  • the present invention is based on the general idea of diverting a coolant flowing into an exhaust gas recirculation cooler in the exhaust gas recirculation cooler with as little loss as possible to a so-called exhaust gas inlet floor and thereby achieving an increase in heat transfer in the exhaust gas recirculation cooler between a hot exhaust gas and the colder coolant.
  • the exhaust gas recirculation cooler has a housing in which a plurality of cooling tubes are arranged in columns next to one another to form a row of tubes and at least two rows of tubes one above the other and spaced apart from one another to form a tube block. Exhaust gas can flow through the inside of the respective cooling tube and connects an exhaust gas inlet with an exhaust gas outlet in a gas-conducting manner.
  • Coolant can flow around the respective cooling tube inside the housing, for which purpose the housing has a coolant inlet opening into the housing in an inlet region and a coolant outlet.
  • the exhaust gas recirculation cooler also has an annular space which surrounds the tube block in the circumferential direction and through which the coolant can flow.
  • the exhaust gas recirculation cooler has a flow guide arrangement for guiding the coolant inside the pipe block, which is arranged in the housing, at least in regions, against at least one of the rows of pipes.
  • the flow guide arrangement bears against at least one of the rows of pipes.
  • the flow guide arrangement can be arranged between the adjacent rows of pipes and can have a plurality of guide channels for guiding the coolant, such as water, between the respective adjacent rows of pipes.
  • the guide channels can guide the coolant from the inlet region of the housing between the two rows of pipes essentially in a transverse direction orthogonal to a longitudinal direction of the pipe block and can delay an outflow of the coolant in the longitudinal direction to the coolant outlet. This enables a longer and more uniform application of the coolant to the pipe block, in particular in the hotter inlet area, and consequently also improves the heat transfer between the coolant and the exhaust gas.
  • the flow guide arrangement can, for example, have at least one guide plate with guide channels, which is arranged between the adjacent rows of pipes and enables the coolant to be guided essentially in the transverse direction.
  • the flow-guiding arrangement can rest on one or more rows of pipes on a side of the pipe block facing the annular space and guide the coolant out of the annular space between the adjacent rows of pipes. In this way, the coolant can be prevented from flowing out of the inlet area from the coolant inlet to the coolant outlet around the pipe block, and a longer and uniform application of the coolant to the pipe block is made possible.
  • the flow guide arrangement can advantageously be arranged in the pipe block during the manufacture of the exhaust gas recirculation cooler.
  • the flow control arrangement can also be adapted accordingly.
  • the heat transfer in the exhaust gas recirculation cooler is increased by the flow side arrangement and thereby a mechanical failure of the exhaust gas recirculation cooler due to overheating advantageously prevented.
  • the flow guide arrangement has at least one flow guide structure, the flow guide structure being arranged at least in regions in the inlet region of the housing and engaging the pipe block from the annular space.
  • the flow guide structure can advantageously delay the coolant flowing away around the pipe block from the inlet area and enable the coolant to be guided between the adjacent rows of pipes essentially in the transverse direction.
  • the flow guide arrangement can have a plurality of flow guide structures which engage from the annular space in the tube block on one side or on both sides opposite one another.
  • the flow behavior of the coolant in the annular space and in the tube block can be influenced advantageously by the number, the arrangement of the flow guide structures on the tube block, the dimensions and the configuration of the flow guide structures.
  • the at least one flow guide structure has a plurality of individual wire elements, the respective wire element being provided for one row of tubes or for some of the rows of tubes.
  • the respective wire element according to the invention encompasses at least one of the rows of pipes at least in regions on a side facing the annular space.
  • the respective wire element is thereby arranged in a clamped or form-fitting manner on one of the rows of pipes and engages in spaces between the adjacent rows of pipes from the annular space.
  • the respective wire element can encompass several or individual rows of pipes, thereby influencing the flow pattern of the coolant in the pipe block and in the annular space.
  • the flow guide structure has at least one fixing area for fixing the flow guide structure on the row of pipes and at least one flow guide area for guiding the coolant between the adjacent rows of pipes.
  • the fixing area can, for example, fix the flow guide structure to the row of pipes in a form-fitting or non-positive manner.
  • the coolant is passed through the pipe block through the flow guide area, the flow guide area being arranged in the inlet area of the housing and thus allowing the coolant to be guided in the pipe block from the coolant inlet.
  • the flow pattern of the coolant in the annular space and in the tube block can be advantageously influenced by the number, the arrangement on the tube block, the dimensions and the configuration of the flow guide structures.
  • the fixing area and / or the flow guiding area of the flow guiding structure can be clamped between two adjacent rows of pipes. In this way, an undesired displacement of the flow guide structure within the pipe block can be prevented and a particularly secure fixing of the flow guide structure in the pipe block can be achieved.
  • the flow-guiding region deflects the coolant flowing in from the coolant inlet to the exhaust gas inlet - that is to say to the so-called exhaust gas inlet floor.
  • the exhaust gas to be cooled has the highest temperature and the coolant flowing in from the coolant inlet has the lowest temperature within the housing.
  • the flow guide area can have at least one guide channel, which is arranged essentially transversely to the longitudinal direction of the pipe block and thus enables the coolant to be deflected to the exhaust gas inlet.
  • the guide channel can extend over the entire width or alternatively only partially in the width of the pipe block.
  • the angle of the guide channel to the longitudinal direction or to the transverse direction of the pipe block can also be adjusted in order to influence the flow pattern of the coolant in the pipe block.
  • the flow guide structure has several individual wire elements.
  • the wire element can be, for example, an injection molded part, an injection molded part or a wire molded part.
  • the wire element advantageously has a small volume and only insignificantly reduces the volume of the coolant flowing in the housing. In an advantageous manner, the coolant is guided in the tube block and the volume of the coolant in the housing is retained.
  • the wire element advantageously also has only a slight effect on the pressure loss in the coolant flow. Furthermore, the wire element can be manufactured inexpensively.
  • the fixing area and the flow guiding area are integrally formed on the wire element.
  • the fixing area can be shaped in a meandering shape or in the form of a clamp and enable the flow-guiding structure to be non-positively fixed on the pipe block.
  • the flow area can be shaped in the form of a longer guide channel which extends essentially in the transverse direction.
  • the flow pattern of the coolant in the pipe block can be advantageously influenced by adapting the length of the guide channel or the angle to the transverse direction of the pipe block.
  • the flow guide arrangement has a ring structure.
  • the ring structure is arranged in the ring space around the pipe block and, in a fluid-resistant manner, separates the inlet area within the ring space from the coolant outlet at least in some areas. In an advantageous manner, a drainage of the coolant around the pipe block from the inlet area is inhibited and the heat transfer in the inlet area is improved.
  • the ring structure can, for example, be arranged in a recess in the housing and thus fixed on the housing. Alternatively, the ring structure can be fixed to a recess in the housing.
  • the ring structure has at least one passage opening through which the coolant can flow from the inlet area within the ring space to the coolant outlet.
  • the passage opening can be provided, for example, on a side surface or on an angled region of the ring structure in order to at least partially allow the coolant to flow out of the inlet region. In particular, this can prevent the coolant from accumulating and thus overheating in the inlet area and the coolant pressure in the housing can be maintained.
  • the ring structure can advantageously be fixed resiliently and / or pretensioned on the pipe block and / or on the housing.
  • the ring structure can have, for example, resilient structures formed on the ring structure Have longitudinal direction, which can advantageously protect the ring structure from mechanical loads such as vibrations.
  • the housing has a circulation space, the circulation space enclosing the tube block in the inlet region in the circumferential direction and being formed, for example, by a depression in the housing.
  • the coolant can be collected in the circulation space before it is led into the tube block and the tube block can be additionally cooled in the inlet area.
  • the coolant can then be guided from the circulation space between the rows of pipes in order to cool the exhaust gas. In this way, uniform application of the coolant to the pipe block can be achieved and consequently the heat transfer between the coolant and the exhaust gas in the inlet area can be increased.
  • the flow guide arrangement has the ring structure and at least one flow guide structure and that at least one of the flow guide structures is integrally formed on the ring structure.
  • the flow guide structure integrally formed on the ring structure can be designed in a particularly stable manner and the service life of the flow guide arrangement can thereby be increased.
  • the flow guide arrangement has the ring structure and at least one flow guide structure, the ring structure encompassing at least one of the flow guide structures arranged on the pipe block.
  • the flow guide structures can first be arranged in the pipe block and then the ring structure can be arranged around the pipe block.
  • Fig. 1 shows a partial sectional view of an exhaust gas recirculation cooler 1 according to the invention.
  • the exhaust gas recirculation cooler 1 has a housing 2 in which a plurality of cooling tubes 3 are arranged in columns next to one another to form a row of tubes 4 and at least two rows of tubes 4 one above the other and spaced apart from one another to form a tube block 5.
  • Exhaust gas can flow through the respective cooling tube 3 and connects an exhaust gas inlet 6 to an exhaust gas outlet 7 in a gas-conducting manner.
  • the individual cooling tubes 3 are connected to an exhaust gas inlet floor 6a at the exhaust gas inlet 6 and to an exhaust gas outlet floor 7a at the exhaust gas outlet 7.
  • the respective cooling tube 3 can be flowed around by the coolant within the housing 2, for which purpose the housing 2 has a coolant inlet 9 opening into the housing 2 in an inlet area 8 and a coolant outlet 10.
  • the exhaust gas recirculation cooler 1 also has an annular space 11 which surrounds the tube block 5 in the circumferential direction and through which the coolant can flow.
  • the exhaust gas recirculation cooler 1 has a flow guide arrangement 12 for guiding the coolant inside the tube block 5, which is arranged in the housing 2, at least in regions, against at least one of the tube rows 3.
  • the flow guide arrangement 12 has an annular structure 13 which is arranged in the annular space 11 around the tube block 5.
  • the ring structure 13 fluid-tightly separates the inlet area 8 within the annular space 11 from the coolant outlet 10, so that the coolant does not flow out around the pipe block 5 from the inlet area 8, and the heat transfer in the inlet area 8 is improved.
  • the housing 2 has a circulation space 14 which surrounds the pipe block 5 in the inlet region 8 in the circumferential direction.
  • Fig. 2 shows a partial sectional view of the exhaust gas recirculation cooler 1 with the circulation space 14.
  • the middle cooling tubes 3 in the row of tubes 4 are shown in dashed lines.
  • the coolant is dammed up before leading to the exhaust gas inlet 6 and the pipe block 5 is cooled longer in the inlet area 8. From the circulation space 14, the coolant can then be guided into the tube block 5, as indicated by arrows. In this way, uniform application of the coolant to the pipe block 5 can be achieved and consequently the heat transfer between the coolant and the exhaust gas in the inlet area 8 can be increased.
  • Fig. 3 shows a view and Fig. 4 a plan view of the flow guide arrangement 12, which is arranged on the pipe block 5.
  • the flow guide arrangement 12 has two flow guide structures 15, which are wire elements 16 in this exemplary embodiment.
  • the flow guide structures 15 can be arranged in regions in the inlet region 8 of the housing 2 and can engage in the tube block 5 from the annular space 11.
  • the flow guide structures 15 each have a fixing area 17 for fixing the respective flow guide structure 15 to the respective row of pipes 4 and a flow guide area 18 for guiding the coolant between the adjacent rows of pipes 4.
  • the fixing area 17 encompasses the respective row of tubes 4 and fixes the flow guide structure 15 to the tube block 5 by clamping.
  • the flow guiding region 18 deflects the coolant flowing from the coolant inlet 9 to the exhaust gas inlet 6.
  • the flow area 18 of the respective flow guide structure 15 has two guide channels 19, which essentially extend in a transverse direction 20 to a longitudinal direction 21 of the pipe block 5.
  • the respective guide channel 19 has - as in Fig. 4 to see - an angle to the transverse direction 20 and can deflect the coolant to the exhaust gas inlet 6 and the exhaust gas inlet floor 6a.
  • the angle of the guide channel 19 to the transverse direction 20 or to the longitudinal direction 21 of the tube block 5 and the length of the guide channel 19 can be adjusted in order to influence the flow pattern of the coolant in the tube block 5.
  • the flow guide structure 15 delays the coolant from flowing out of the inlet area 8, so that the heat transfer between the coolant and the exhaust gas can be increased.
  • Fig. 5 is a single wire element 16 of the flow guide structure 15 and in Fig. 6 A total of four wire elements 16 of the flow guide structure 15 are arranged to the flow guide arrangement 12.
  • the respective wire element 16 can be, for example, an injection molded part, an injection molded part or a wire molded part.
  • the fixing area 17 and the flow guiding area 18 are integrally formed on the wire element 16.
  • the wire element 16 can thus be produced inexpensively.
  • the fixing area 17 of the wire element 16 is shaped in a meandering manner and enables the wire element 16 to be non-positively attached to the tube row 4.
  • the flow guiding area 18 of the wire element 16 has two guide channels 19, through which the coolant can be guided between the adjacent tube rows 4.
  • the flow pattern of the coolant in the tube block 5 can be advantageous by changing the length and the width of the guide channel 19 and the angle to the transverse direction 20 can be influenced.
  • Fig. 7 shows a view of the exhaust gas recirculation cooler 1 with the ring structure 13 of the flow guide arrangement 12.
  • the ring structure 13 is arranged in the ring space 11 around the pipe block 5 and separates the inlet area 8 within the ring space 11 from the coolant outlet 10 in a fluid-resistant manner Drainage of the coolant around the tube block 5 from the inlet area 8 is inhibited and the heat transfer in the inlet area 8 is improved.
  • the ring structure 13 has at least one passage opening 22.
  • the passage opening 22 is arranged in an angled area 23 of the ring structure 13 and enables the coolant to flow out of the inlet area 8 within the annular space 11.
  • the ring structure 13 can be several in size and have passage opening 22 different in position.
  • FIG. 8 A view of the exhaust gas recirculation cooler 1 is shown with the flow guide arrangement 12, which has the ring structure 13 and the flow guide structures 15.
  • the ring structure 13 encompasses the flow guide structures 15 arranged on the pipe block 5, as a result of which an additional fixing of the flow guide structures 15 in the pipe block 5 is made possible.
  • the flow guide arrangement 12 can already be arranged in the tube block 5, for example, during the manufacture of the exhaust gas recirculation cooler 1. Depending on the dimensions of the exhaust gas recirculation cooler 1, the flow guide arrangement 12 can also be adapted accordingly.
  • the heat transfer in the exhaust gas recirculation cooler 1 according to the invention is improved by the flow guide arrangement 12 and thereby advantageously both mechanical failure of the exhaust gas recirculation cooler 1 as a result of overheating and also increases the efficiency of the exhaust gas recirculation cooler 1.

Claims (12)

  1. Refroidisseur à recirculation de gaz d'échappement (1) pour un moteur à combustion interne, en particulier d'un véhicule automobile,
    - dans lequel le refroidisseur à recirculation de gaz d'échappement (1) présente un boîtier (2) au sein duquel plusieurs tubes de refroidissement (3) sont agencés de manière juxtaposée pour fournir une rangée de tubes (4) et au moins deux rangées de tubes (4) sont agencées de manière superposée et espacées l'une de l'autre pour fournir un bloc de tubes (5),
    - dans lequel le tube de refroidissement (3) respectif peut être parcouru à l'intérieur par du gaz d'échappement et relie une entrée de gaz d'échappement (6) à une sortie de gaz d'échappement (7) par canalisation du gaz, tandis que du liquide de refroidissement peut circuler autour dudit tube à l'intérieur du boîtier (2),
    - dans lequel le boîtier (2) présente une entrée de liquide de refroidissement (9), débouchant dans le boîtier (2) dans une région d'entrée (8), et une sortie de liquide de refroidissement (10), et
    - dans lequel le refroidisseur à recirculation de gaz d'échappement (1) présente un espace annulaire (11) renfermant le bloc de tubes (5) dans le sens circonférentiel et qui peut être parcouru par le liquide de refroidissement,
    - dans lequel le refroidisseur à recirculation de gaz d'échappement (1) présente un agencement de guidage d'écoulement (12) destiné à guider le liquide de refroidissement à l'intérieur du bloc de tubes (5) et qui est agencé dans le boîtier (2) au moins par endroits de manière adjacente à au moins une des rangées de tubes (4),
    - dans lequel l'agencement de guidage d'écoulement (12) présente au moins une structure de guidage d'écoulement (15), dans lequel la structure de guidage d'écoulement (15) est agencée au moins par endroits dans la région d'entrée (8) du boîtier (2) et vient en prise avec le bloc de tubes (5) à partir de l'espace annulaire (11),
    caractérisé en ce que
    - la au moins une structure de guidage d'écoulement (15) présente plusieurs éléments en fil métallique (16) individuels, dans lequel l'élément en fil métallique (16) respectif est prévu pour respectivement une rangée de tubes (4) ou pour respectivement quelques-unes des rangées de tubes (4), et
    - l'élément en fil métallique respectif de la structure de guidage d'écoulement (15) entoure la rangée de tubes (4) associée ou les rangées de tubes (4) associées au moins par endroits au niveau d'un côté tourné vers l'espace annulaire (11) et vient en prise avec les rangées de tubes (4) adjacentes à partir de l'espace annulaire (11) dans des espaces intermédiaires et de ce fait l'élément en fil métallique (16) respectif est fixé par serrage ou complémentarité de forme à la rangée de tubes (4) associée ou aux rangées de tubes (4) associées du bloc de tubes (5).
  2. Refroidisseur à recirculation de gaz d'échappement selon la revendication 1,
    caractérisé en ce que
    la structure de guidage d'écoulement (15) présente au moins une région de fixation (17) destinée à la fixation de la structure de guidage d'écoulement (15) au niveau de la rangée de tubes (4) et au moins une région de guidage d'écoulement (18) destinée au guidage du liquide de refroidissement entre les rangées de tubes (4) adjacentes.
  3. Refroidisseur à recirculation de gaz d'échappement selon la revendication 2,
    caractérisé en ce que
    la région de fixation (17) et/ou la région de guidage d'écoulement (18) de l'élément en fil métallique (16) respectif de la structure de guidage d'écoulement (15) sont enserrées entre deux rangées de tubes (4) adjacentes.
  4. Refroidisseur à recirculation de gaz d'échappement selon la revendication 2 ou 3,
    caractérisé en ce que
    la région de guidage d'écoulement (18) dévie le liquide de refroidissement venant de l'entrée de liquide de refroidissement (9) vers l'entrée de gaz d'échappement (6).
  5. Refroidisseur à recirculation de gaz d'échappement selon l'une quelconque des revendications 2 à 4,
    caractérisé en ce que
    la région de fixation (17) et la région de guidage d'écoulement (18) sont formées d'un seul tenant au niveau de l'élément en fil métallique (16).
  6. Refroidisseur à recirculation de gaz d'échappement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément en fil métallique (16) respectif est une pièce formée par injection, une pièce moulée par injection ou une pièce en fil métallique moulée.
  7. Refroidisseur à recirculation de gaz d'échappement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'agencement de guidage d'écoulement (12) présente une structure annulaire (13), dans lequel la structure annulaire (13) est agencée dans l'espace annulaire (11) autour du bloc de tubes (5), et dans lequel la structure annulaire (13) sépare au moins par endroits la région d'entrée (8) par rapport à la sortie de liquide de refroidissement (9) de manière étanche aux liquides à l'intérieur de l'espace annulaire (11).
  8. Refroidisseur à recirculation de gaz d'échappement selon la revendication 7,
    caractérisé en ce que
    la structure annulaire (13) présente au moins une ouverture de passage (22) à travers laquelle le liquide de refroidissement peut s'écouler de la région d'entrée (8) vers la sortie de liquide de refroidissement (10) à l'intérieur de l'espace annulaire (11).
  9. Refroidisseur à recirculation de gaz d'échappement selon la revendication 7 ou 8,
    caractérisé en ce que
    la structure annulaire (13) est fixée de manière élastique et/ou précontrainte au niveau du bloc de tubes (5) et/ou au niveau du boîtier (2).
  10. Refroidisseur à recirculation de gaz d'échappement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le boîtier (2) présente un espace de circulation (14), dans lequel l'espace de circulation (14) entoure le bloc de tubes (5) dans la région d'entrée (8) dans le sens circonférentiel.
  11. Refroidisseur à recirculation de gaz d'échappement selon l'une quelconque des revendications 7 à 9,
    caractérisé en ce que
    l'agencement de guidage d'écoulement (12) présente la structure annulaire (13) et au moins une structure de guidage d'écoulement (15) et en ce qu'au moins une des structures de guidage d'écoulement (15) est formée d'un seul tenant au niveau de la structure annulaire (13).
  12. Refroidisseur à recirculation de gaz d'échappement selon l'une quelconque des revendications 7 à 9,
    caractérisé en ce que
    l'agencement de guidage d'écoulement (12) présente la structure annulaire (13) et au moins une structure de guidage d'écoulement (15), dans lequel la structure annulaire (13) entoure au moins une des structures de guidage d'écoulement (15) agencées au niveau du bloc de tubes (5).
EP17192019.2A 2016-10-13 2017-09-20 Refroidisseur de gaz d'échappement récirculés pour un moteur à combustion interne Active EP3309381B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016220017 2016-10-13
DE102017206201.0A DE102017206201A1 (de) 2016-10-13 2017-04-11 Abgasrückführkühler für eine Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP3309381A1 EP3309381A1 (fr) 2018-04-18
EP3309381B1 true EP3309381B1 (fr) 2020-03-04

Family

ID=59930198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17192019.2A Active EP3309381B1 (fr) 2016-10-13 2017-09-20 Refroidisseur de gaz d'échappement récirculés pour un moteur à combustion interne

Country Status (1)

Country Link
EP (1) EP3309381B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111810323A (zh) * 2020-06-30 2020-10-23 东风马勒热系统有限公司 废气再循环冷却器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212914A1 (de) * 1982-04-06 1983-10-13 Waterkotte Wärmepumpen GmbH, 4690 Herne Roehrenbuendelwaermeaustauscher
DE19654366B4 (de) 1996-12-24 2005-10-20 Behr Gmbh & Co Kg Strömungskanal, insbesondere für einen Abgaswärmeübertrager
DE19961284A1 (de) 1999-12-18 2001-07-12 Bosch Gmbh Robert Wärmeübertrager für Gasheizgeräte, insbesondere Brennwertgeräte
JP5145718B2 (ja) 2006-02-03 2013-02-20 株式会社デンソー 熱交換器
JP2010048536A (ja) 2008-08-25 2010-03-04 Denso Corp 熱交換器
DE102010001635A1 (de) 2010-02-05 2011-08-11 Behr GmbH & Co. KG, 70469 Wärmeübertrager
DE102010008176B4 (de) 2010-02-16 2013-04-11 Thesys Gmbh Wärmeübertrager und Verfahren zum Betreiben eines Wärmeübertragers
WO2012115799A1 (fr) 2011-02-21 2012-08-30 International Engine Intellectual Property Company, Llc Refroidisseur d'egr et procédé
WO2014052309A1 (fr) 2012-09-25 2014-04-03 Modine Manufacturing Company Échangeur de chaleur
EP2725219A1 (fr) 2012-10-25 2014-04-30 BorgWarner Inc. Déflecteur d'écoulement
JP6143335B2 (ja) * 2013-03-28 2017-06-07 臼井国際産業株式会社 多管式熱交換器
DE102014202447A1 (de) * 2014-02-11 2015-08-13 MAHLE Behr GmbH & Co. KG Abgaswärmeübertrager
DE102014208259A1 (de) 2014-04-30 2015-11-05 Mtu Friedrichshafen Gmbh Kühleinrichtung zur Kühlung eines fluiden Mediums, Abgasrückführsystem für eine Brennkraftmaschine und Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111810323A (zh) * 2020-06-30 2020-10-23 东风马勒热系统有限公司 废气再循环冷却器
CN111810323B (zh) * 2020-06-30 2022-05-31 东风马勒热系统有限公司 废气再循环冷却器

Also Published As

Publication number Publication date
EP3309381A1 (fr) 2018-04-18

Similar Documents

Publication Publication Date Title
EP1985953B1 (fr) Echangeur thermique, en particulier destiné au refroidissement des gaz d'échappement, procédé d'utilisation d'un tel échangeur et système comprenant un refroidisseur EGR
EP3108194B1 (fr) Caloporteur de gaz d'échappement
EP1996888B1 (fr) Échangeur thermique pour véhicule automobile
DE102005045103B3 (de) Kühlvorrichtung für eine Verbrennungskraftmaschine
DE102015200657A1 (de) Brennkraftmaschine
EP3027881B1 (fr) Module d'aspiration destiné à un moteur à combustion interne
DE102017206201A1 (de) Abgasrückführkühler für eine Brennkraftmaschine
EP2048345B1 (fr) Echangeur thermique, notamment destiné au refroidissement des gaz d'échappement
EP3309381B1 (fr) Refroidisseur de gaz d'échappement récirculés pour un moteur à combustion interne
DE112017001679B4 (de) Ladeluftkühler
EP3106820A2 (fr) Fluide caloporteur
DE102007041338B3 (de) Wärmeübertragungseinheit für eine Verbrennungskraftmaschine
EP2998684B1 (fr) Procede d'introduction d'un liquide de refroidissement dans un echangeur thermique, de preference pour un refroidisseur de gaz d'echappement d'un moteur a combustion interne d'un vehicule automobile
EP2402585B1 (fr) Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne
EP3066407B1 (fr) Échangeur de chaleur
WO2022022934A1 (fr) Échangeur thermique pour un moteur à combustion interne, ayant un élément de rigidification dans la région d'une jonction entre deux cloisons, et moteur à combustion interne doté d'un échangeur thermique
EP2278149B1 (fr) Echangeur thermique et système de chargement
DE102016113555B4 (de) Abgas-System für eine Verbrennungskraftmaschine
DE202019101397U1 (de) Abgaskühler
WO2019072853A1 (fr) Échangeur de chaleur de gaz d'échappement
EP2855909B1 (fr) Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne
EP3203173A1 (fr) Échangeur thermique de gaz d'échappement
DE102007033410B4 (de) Ladeluftkühler und Verbrennungskraftmaschine
WO2013068291A1 (fr) Dispositif de conversion d'une énergie calorifique en énergie électrique
DE202021100465U1 (de) Abgaswärmeübertrager

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181016

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20181206

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190927

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1240650

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200315

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502017004064

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200604

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200605

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200604

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200704

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200729

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502017004064

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20201127

Year of fee payment: 4

26N No opposition filed

Effective date: 20201207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200920

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200920

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502017004064

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210920

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210920

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220401

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1240650

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220920

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220920