EP3710688A1 - Powertrain with improved pollutant removal system - Google Patents

Powertrain with improved pollutant removal system

Info

Publication number
EP3710688A1
EP3710688A1 EP18789166.8A EP18789166A EP3710688A1 EP 3710688 A1 EP3710688 A1 EP 3710688A1 EP 18789166 A EP18789166 A EP 18789166A EP 3710688 A1 EP3710688 A1 EP 3710688A1
Authority
EP
European Patent Office
Prior art keywords
casing
tubular wall
pollution control
control system
recirculation system
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.)
Granted
Application number
EP18789166.8A
Other languages
German (de)
French (fr)
Other versions
EP3710688B1 (en
Inventor
Eric Dumas
Acacio MARTINS
Xavier Decomble
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.)
Renault SAS
Nissan Motor Co Ltd
Original Assignee
Renault SAS
Nissan Motor Co Ltd
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 Renault SAS, Nissan Motor Co Ltd filed Critical Renault SAS
Publication of EP3710688A1 publication Critical patent/EP3710688A1/en
Application granted granted Critical
Publication of EP3710688B1 publication Critical patent/EP3710688B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/103—Oxidation catalysts for HC and CO only
    • 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
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • 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
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger

Definitions

  • the invention relates to an improved depollution system of a power train with a heat engine.
  • the invention relates more particularly to a catalytic converter of a heat engine depollution system.
  • the invention relates to a motor vehicle with a power train with an improved pollution control system.
  • a motor vehicle equipped with a powertrain has been subject for some years to strong constraints in terms of pollution control to minimize the release of gaseous pollutants into the atmosphere such as oxides and nitrogen monoxide. and / or carbon.
  • a powertrain comprises a heat engine, and the pollution control system is placed on an exhaust line of said engine.
  • a pollution control system comprises a particulate filter (FAP) and an oxidation catalyst (DOC) also known under the name of catalytic converter connected in series on the exhaust line.
  • FAP particulate filter
  • DOC oxidation catalyst
  • the gases at the outlet of the low-pressure pollution control system are very hot, which reduces the mass of the gases before entering the engine intake circuit and therefore the efficiency of said engine. It is known to add to the low-pressure flue gas recirculation circuit a flue gas cooler.
  • the cooler may be a water-air exchanger in which the air, in this case the burnt gases, transfers a heat quantity to the water which carries this heat for example to a radiator generally in front of the vehicle.
  • Publication US4912928-A proposes a heat exchanger connected to a catalyst in order to reduce the size of the heat exchanger, to reduce the overall size of the exchanger, to lower the cost of production and to reduce the heat exchanger. space of the installation.
  • Said heat exchanger is installed downstream of the catalyst and the document does not propose a compact arrangement of the gas recirculation device which comprises a catalyst and an exchanger.
  • a piece connector of the water-air heat exchanger is pushed into an outlet of the pollution control system.
  • This connector then forms a large protuberance in a chamber at the outlet of the pollution control system here a catalytic converter altering the circulation of exhaust gases at the outlet to form low gas velocity and high temperature zones.
  • the gases arriving in this zone are very hot.
  • they contribute to heating the wall of the water-air heat exchanger and form a zone of high temperatures which disturbs the operation of the cooler: indeed, the water is heated to high temperature and thus does not evacuate the heat of the heat. gas with the expected efficiency, which leads to less efficiency in reducing the discharge of gaseous pollutants.
  • the object of the invention is to remedy these problems and one of the objects of the invention is a powertrain with a pollution control system with improved flue gas cooling.
  • the present invention relates to a recirculation system of burnt gases from a motor vehicle engine, downstream of a pollution control system.
  • the present invention more particularly relates to a device for recirculating burnt gases from a motor vehicle powertrain comprising:
  • crankcase of a system for cleaning up burned gases
  • a burnt gas recirculation element comprising a connection endpiece with a tubular wall driven into an outlet opening of the casing of the pollution control system;
  • the device an envelope adapted to surround the tubular wall of the connection tip.
  • the burnt gas recirculation device proposes a casing surrounding a tubular wall of a connecting end of an element of the flue gas recirculation circuit in order to protect hot gases burnt said tip and in particular the tubular wall recessed in the crankcase of the pollution control system.
  • the casing is tubular.
  • the casing is tubular to optimally accommodate the connection end and in particular to cover the tubular wall of said endpiece.
  • the casing is adapted to reorient the flue gas flow in the opposite direction to the tubular wall.
  • the casing is able to reorient and redirect flue gases directed towards the tubular wall of the nozzle in an opposite direction in order to avoid the impact of the gas flows directly on said tubular wall of the nozzle. tip, which would result in localized heating of said tip and therefore a reduction in the efficiency of the recirculation of flue gas.
  • the casing is of complementary shape to the tubular wall of the connecting end piece.
  • the casing has a shape complementary to the tubular wall of the connection tip, which keeps the compactness of the entire device.
  • the envelope is part of the crankcase of the pollution control system.
  • the envelope is part of the housing of the pollution control system, resulting for example from molding. Manufacturing and assembly are simplified.
  • the envelope is part of the connection tip.
  • the envelope according to another embodiment is part of the tip of the pollution control system, said envelope is then reported around said tip; which allows a simple adaptation of the invention to an existing pollution control system housing and nozzle.
  • the envelope is formed by a metal sheet.
  • the casing is formed by a sheet metal winding, which allows ease of manufacture and easy adaptation between the casing and the endpiece.
  • the casing is separated from the tubular wall to prevent heat transfer by conduction between said casing and the tubular wall of the endpiece.
  • the device comprises a thermal insulation layer disposed between the casing and the tubular wall.
  • the device comprises a layer of thermal insulation disposed between the casing and the tubular wall in order to obtain optimum thermal protection of the tip.
  • FIG. 1 is a schematic view of a flue gas recirculation device with a pollution control system.
  • FIG. 2 is a schematic longitudinal sectional view of a connecting end of a heat exchanger with a tubular wall driven into an outlet opening of the housing of the pollution control system.
  • FIG. 3 is a schematic longitudinal sectional view of the envelope according to one embodiment of the invention.
  • FIG. 4 is a schematic longitudinal sectional view of the envelope with the nozzle according to the embodiment of the invention.
  • FIG. 5 is a schematic of the exchanger according to a second embodiment.
  • FIG. 6 is a schematic view of the envelope according to the second embodiment.
  • FIG. 7 is a schematic view of the flue gas recirculation device with the pollution control system according to the second embodiment.
  • FIG. 8 is a schematic view of longitudinal section of the nozzle according to the second embodiment.
  • FIG. 1 represents a device for recirculating burnt gases resulting from the combustion of an air and fuel mixture in a combustion chamber of a heat engine or internal combustion engine (not shown).
  • the engine of a motor vehicle comprises a crankcase surmounted by a cylinder head.
  • a cylinder block In the cylinder block are drilled cylinders in each of which slides a piston.
  • the volume defined by the wall of the cylinder, the piston and a bottom wall of the cylinder head form a combustion chamber.
  • fuel and gas composed mainly of fresh air and recirculated gas to form a mixture which is compressed by the rise of the piston to be burned next.
  • the flue gases escape via exhaust ducts controlled by exhaust valves to an exhaust manifold adapted to direct said flue gases to a pollution control system 100.
  • the pollution control system may comprise various pollution control elements including a catalyst associated with a particle filter for example, said elements are housed inside a housing 101 substantially cylindrical.
  • the flue gases undergo the depollution treatment passing through the pollution control elements and a portion of the exhaust gas exhausted from the pollution control system 100 is taken back to be returned to the engine air intake to reduce gas emissions. pollutants, thanks to a recirculation circuit 10 of the burnt gases.
  • the flue gas recirculation circuit taken downstream according to the flow direction of the flue gases, the pollution control system is called “low pressure”.
  • Another circuit may also bring burnt gases to the engine intake but upstream of the pollution control system and is called “high pressure”.
  • the invention relates to the "low pressure" flue gas recirculation circuit.
  • the cooler may be a water-air heat exchanger 102 in which the flue gases transfer a heat quantity to the water which carries this heat for example to a radiator (not shown) generally on the front of the vehicle.
  • the flue gas recirculation circuit comprises various recirculation elements among which an EGR valve for "Exhaust gas recirculation” or recirculation of flue gases, a cooler 102 of said gases.
  • FIG. 2 shows the connection of the water-gas exchanger 102 of the flue gas recirculation device 10 with the pollution control system 100.
  • the cooler 102 has a substantially cylindrical connection tip 11 surrounding longitudinal gas lines 104 which are immersed in a transfer chamber 103 filled with coolant.
  • the coolant is water-based and enters said transfer chamber 103 through an inlet opening 105 and exits through an outlet 106 to be subsequently conducted to a radiator (not shown).
  • connection endpiece 11 has a tubular wall 12 and is pushed through an outlet opening 107 into a substantially conical wall 108 of the outlet of the housing 101 of the pollution control system.
  • Part of the hot gases is directed by the conical wall 108 of the housing 101 and strike laterally said tubular wall 12 of the nozzle to form a high temperature zone affecting the thermal characteristics of the cooling liquid, in contact.
  • the invention proposes a protection of the tubular wall 12 of the connecting piece 11 against this part of burnt gases.
  • FIGS 3 and 4 show a first embodiment of the invention.
  • the recirculation device 10 according to the invention comprises a casing 14 formed by a metal foil, for example sheet steel stainless steel thin between 0.2mm and 0.5mm. Said envelope 14 surrounds the tubular wall 12 of the connecting piece 11 when it is mounted and pressed into the wall 108 of the casing 101.
  • the casing 14 is tubular to allow the housing of the connection piece to be housed.
  • the casing has an outer wall 15 in contact with the flue gases, capable of deflecting the flue gases in a direction opposite to the tubular wall.
  • the term "direction opposite to the wall tubular" a direction away from the tubular wall.
  • Said outer wall 15 may have a substantially conical shape with a deflection angle ⁇ for example to substantially form a deflector 16 of the flue gases.
  • the envelope 14 is separated from the tubular wall 12 of the connector 11. In this way, no thermal transfer of heat between the casing 14 and the tubular wall 12 can be performed.
  • the inside diameter of the casing 14 is substantially equal to the outside diameter of the connection endpiece 11.
  • no hot gas flow circulates between the casing and the tubular wall of the endpiece.
  • the casing 14 is part of the housing 101 of the pollution control system 100.
  • the casing 14 is substantially cylindrical with an end 17 facing the slightly strangled depollution system and comprising claws 18 fixing.
  • the casing 14 is easily gripped at the connection endpiece 11 when said endpiece is pressed into the wall 108 of the casing 101.
  • the fixing claws 18 also allow optimal positioning of the casing 14 with respect to the tubular wall 12 of the casing the connection tip to maintain a separation 19 between the casing 14 and the tubular wall 12, that is to say that the casing 14 is kept at a distance from the tubular wall 12, without contact.
  • Said separation 19 or separation space is filled by a layer of air or gas forming an insulating layer between the envelope and the tubular wall.
  • the separation space may be closed or of suitable size to prevent a flow of gas in said separation space 19.
  • the thickness of said space is very small of the order of mm, or access to said space of separation is closed or covered by the envelope 14.
  • the envelope 14 is part of the connector 11.
  • the casing 14 is formed by a metal sheet wound around the tubular wall 12 of the connection piece. It rests solely on the longitudinal ends 17, 17 'of the end piece and is separated from the tubular wall 12 to form a separation space 19 between the casing 14 and the tubular wall 12 of the connection piece.
  • the casing may consist of a cylindrical metal sheet shown in FIG. 6, it is wound or threaded around the tubular wall 12 as shown in FIG. 7.
  • the separation space 19 between the casing 14 and the tubular wall 12 is thin and can be filled with air or a layer of thermal insulation 21 such as a layer based on glass fibers and high temperature resins or ceramic.
  • the casing 14 can extend along the axis of the endpiece over a longer length than the insertion length 20 of the endpiece 11 in the housing 101. that is, the envelope 14 protrudes outside the housing 101 of the pollution control system 100 to increase the thermal insulation of the connection tip and improve the efficiency of the exchanger.
  • the envelope covering the portion of the connecting end of the exchanger driven into the housing allows a thermal protection of said nozzle against hot gas flows from striking the lateral tubular wall of said nozzle, said envelope being simple to manufacture and set up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to a device for recirculating (10) exhaust gas of a motor vehicle powertrain, comprising: a housing (101) for a system for removing exhaust gas pollutants (100); and a heat exchanger (102) exchanging heat between a cooling liquid and the exhaust gas and having a connection end fitting (11) with a tubular wall (12), which is driven into an outlet opening (108) of the housing of the pollutant removal system, characterised in that the device (10) comprises a casing (14) that can surround the tubular wall (12) of the connection end fitting.

Description

GROUPE MOTOPROPULSEUR AVEC SYSTEME DE DEPOLLUTION  MOTOR POWERTRAIN WITH DEPOLLUTION SYSTEM
AMELIORE  IMPROVED
Domaine technique de l’invention Technical field of the invention
L’invention se rapporte à un système de dépollution amélioré d’un groupe motopropulseur avec un moteur thermique.  The invention relates to an improved depollution system of a power train with a heat engine.
L’invention concerne plus particulièrement un pot catalytique de système de dépollution de moteur thermique.  The invention relates more particularly to a catalytic converter of a heat engine depollution system.
L’invention concerne un véhicule automobile doté d’un groupe motopropulseur avec un système de dépollution amélioré.  The invention relates to a motor vehicle with a power train with an improved pollution control system.
Etat de la technique State of the art
De manière générale, un véhicule automobile pourvu d’un groupe motopropulseur est soumis depuis quelques années déjà à des contraintes fortes en matière de dépollution afin de réduire au maximum les rejets de gaz polluants dans l’atmosphère tels que les oxydes et monoxydes d’azote et/ou de carbone. Un tel groupe motopropulseur comprend un moteur thermique, et le système de dépollution est placé sur une ligne d’échappement dudit moteur. Un tel système de dépollution comprend un filtre (FAP) à particules et un catalyseur d’oxydation (DOC) connu aussi sous la dénomination de pot catalytique montés en série sur la ligne d’échappement.  In general, a motor vehicle equipped with a powertrain has been subject for some years to strong constraints in terms of pollution control to minimize the release of gaseous pollutants into the atmosphere such as oxides and nitrogen monoxide. and / or carbon. Such a powertrain comprises a heat engine, and the pollution control system is placed on an exhaust line of said engine. Such a pollution control system comprises a particulate filter (FAP) and an oxidation catalyst (DOC) also known under the name of catalytic converter connected in series on the exhaust line.
Actuellement, la place disponible dans le véhicule à proximité du moteur pour installer ce système de dépollution est de plus en plus réduite à cause, d’une part, des volumes de dépollution augmentés du fait des normes de dépollution qui sont de plus en plus sévères, et d’autre part, des compartiments moteur qui deviennent plus exigus du fait de l’augmentation des fonctions qui y sont implantées et de l’accroissement des exigences en terme d’insonorisation. Il en résulte un encombrement de la ligne d’échappement occasionné par certains éléments constituant ce système de dépollution, et donc des pertes de charge importantes qui induisent une perte de puissance du moteur. En effet, ces éléments ont tendance à obturer partiellement la ligne d’échappement, empêchant les gaz d’échappement traités d’être évacués efficacement du véhicule, avec un débit suffisant. Currently, the space available in the vehicle near the engine to install this system of depollution is increasingly reduced because, on the one hand, the volumes of depollution increased because of the standards of depollution which are more and more severe and, on the other hand, engine compartments that become smaller because of the increase in the functions that are implanted there and the increased requirements in terms of soundproofing. This results in a congestion of the exhaust line caused by certain elements constituting this pollution control system, and therefore significant pressure losses that induce a loss of power of the engine. Indeed, these elements tend to partially close the exhaust line, preventing the treated exhaust gases from being evacuated efficiently from the vehicle with a sufficient flow rate.
De plus, de par la réduction du volume des éléments du système de dépollution, la circulation des gaz brûlés à l’intérieur de ces éléments n’est pas idéale ou optimale et nuit à l’efficacité desdits éléments.  In addition, by reducing the volume of the elements of the pollution control system, the flow of flue gases within these elements is not ideal or optimal and affects the efficiency of said elements.
Les gaz en sortie du système de dépollution basse pression sont très chauds ce qui réduit la masse des gaz avant leur entrée dans le circuit d’admission du moteur et donc le rendement dudit moteur. Il est connu d’adjoindre au circuit de recirculation des gaz brûlés basse pression un refroidisseur des gaz brûlés. Le refroidisseur peut être un échangeur eau-air dans lequel l’air, ici les gaz brûlés, transfère une quantité calorifique à l’eau qui emporte cette chaleur par exemple vers un radiateur généralement en face avant du véhicule.  The gases at the outlet of the low-pressure pollution control system are very hot, which reduces the mass of the gases before entering the engine intake circuit and therefore the efficiency of said engine. It is known to add to the low-pressure flue gas recirculation circuit a flue gas cooler. The cooler may be a water-air exchanger in which the air, in this case the burnt gases, transfers a heat quantity to the water which carries this heat for example to a radiator generally in front of the vehicle.
Afin de réduire l’encombrement du groupe motopropulseur avec le système de dépollution, il est avantageux de fixer directement l’échangeur eau- air en sortie du système de dépollution. De cette façon les gaz sont aussitôt refroidis par l’eau qui traverse l’échangeur.  To reduce the size of the powertrain with the pollution control system, it is advantageous to directly fix the water-air heat exchanger at the outlet of the pollution control system. In this way the gases are immediately cooled by the water flowing through the exchanger.
La publication US4912928-A propose un échangeur de chaleur connecté à un catalyseur dans le but de réduire l’encombrement de l’échangeur de chaleur, de réduire la taille globale de l’échangeur, d'abaisser le coût de production et de réduire l'espace de l'installation. Ledit échangeur est installé en aval du catalyseur et le document ne propose pas une disposition compacte du dispositif de recirculation des gaz qui comprend un catalyseur et un échangeur.  Publication US4912928-A proposes a heat exchanger connected to a catalyst in order to reduce the size of the heat exchanger, to reduce the overall size of the exchanger, to lower the cost of production and to reduce the heat exchanger. space of the installation. Said heat exchanger is installed downstream of the catalyst and the document does not propose a compact arrangement of the gas recirculation device which comprises a catalyst and an exchanger.
Un connecteur pièce de l’échangeur eau-air est enfoncé dans une sortie du système de dépollution. Ce connecteur forme alors une protubérance importante dans une chambre en sortie du système de dépollution ici un pot catalytique altérant la circulation des gaz dépollués en sortie pour former des zones à faible vitesse de circulation des gaz et de températures hautes. En effet, les gaz arrivant dans cette zone sont très chauds. De ce fait ils contribuent à échauffer la paroi de l’échangeur eau-air et former une zone de hautes températures qui perturbe le fonctionnement du refroidisseur : en effet, l’eau est portée à haute température et n’évacue donc pas la chaleur des gaz avec l’efficacité attendue, ce qui entraîne une efficacité moindre dans la réduction des rejets de gaz polluants. A piece connector of the water-air heat exchanger is pushed into an outlet of the pollution control system. This connector then forms a large protuberance in a chamber at the outlet of the pollution control system here a catalytic converter altering the circulation of exhaust gases at the outlet to form low gas velocity and high temperature zones. Indeed, the gases arriving in this zone are very hot. As a result, they contribute to heating the wall of the water-air heat exchanger and form a zone of high temperatures which disturbs the operation of the cooler: indeed, the water is heated to high temperature and thus does not evacuate the heat of the heat. gas with the expected efficiency, which leads to less efficiency in reducing the discharge of gaseous pollutants.
Le but de l’invention est de remédier à ces problèmes et un des objets de l’invention est un groupe motopropulseur avec un système de dépollution avec un refroidissement des gaz brûlés amélioré.  The object of the invention is to remedy these problems and one of the objects of the invention is a powertrain with a pollution control system with improved flue gas cooling.
La présente invention concerne un système de recirculation de gaz brûlés issus d’un moteur thermique de véhicule automobile, en aval d’un système de dépollution.  The present invention relates to a recirculation system of burnt gases from a motor vehicle engine, downstream of a pollution control system.
Présentation de l’invention Presentation of the invention
La présente invention concerne plus particulièrement un dispositif de recirculation de gaz brûlés d’un groupe motopropulseur de véhicule automobile comprenant :  The present invention more particularly relates to a device for recirculating burnt gases from a motor vehicle powertrain comprising:
- un carter d’un système de dépollution de gaz brûlés,  a crankcase of a system for cleaning up burned gases,
- un élément de recirculation des gaz brûlés comportant un embout de connexion avec une paroi tubulaire enfoncée dans une ouverture de sortie du carter du système de dépollution,  a burnt gas recirculation element comprising a connection endpiece with a tubular wall driven into an outlet opening of the casing of the pollution control system;
caractérisé en ce que le dispositif une enveloppe apte à entourer la paroi tubulaire de l’embout de connexion.  characterized in that the device an envelope adapted to surround the tubular wall of the connection tip.
De manière avantageuse, le dispositif de recirculation de gaz brûlés propose une enveloppe entourant une paroi tubulaire d’un embout de connexion d’un élément du circuit de recirculation des gaz brûlés afin de protéger des gaz chauds brûlés ledit embout et notamment la paroi tubulaire enfoncée dans le carter du système de dépollution.  Advantageously, the burnt gas recirculation device proposes a casing surrounding a tubular wall of a connecting end of an element of the flue gas recirculation circuit in order to protect hot gases burnt said tip and in particular the tubular wall recessed in the crankcase of the pollution control system.
Selon d’autres caractéristiques de l’invention :  According to other features of the invention:
- l’enveloppe est tubulaire.  the casing is tubular.
De manière avantageuse, l’enveloppe est tubulaire pour accueillir de façon optimale l’embout de connexion et notamment de recouvrir la paroi tubulaire dudit embout.  Advantageously, the casing is tubular to optimally accommodate the connection end and in particular to cover the tubular wall of said endpiece.
- l’enveloppe est apte à réorienter les flux de gaz brûlés en direction opposée à la paroi tubulaire. De manière avantageuse, l’enveloppe est apte à réorienter et à rediriger des flux de gaz brûlés dirigés vers la paroi tubulaire de l’embout vers une direction opposée afin d’éviter l’impact des flux de gaz directement sur ladite paroi tubulaire de l’embout, ce qui aurait pour conséquence un échauffement localisé dudit embout et donc une réduction de l’efficacité de la recirculation des gaz brûlés. - The casing is adapted to reorient the flue gas flow in the opposite direction to the tubular wall. Advantageously, the casing is able to reorient and redirect flue gases directed towards the tubular wall of the nozzle in an opposite direction in order to avoid the impact of the gas flows directly on said tubular wall of the nozzle. tip, which would result in localized heating of said tip and therefore a reduction in the efficiency of the recirculation of flue gas.
- l’enveloppe est de forme complémentaire à la paroi tubulaire de l’embout de connexion.  the casing is of complementary shape to the tubular wall of the connecting end piece.
De manière avantageuse, l’enveloppe présente une forme complémentaire à la paroi tubulaire de l’embout de connexion, ce qui permet de garder la compacité de l’ensemble du dispositif.  Advantageously, the casing has a shape complementary to the tubular wall of the connection tip, which keeps the compactness of the entire device.
- l’enveloppe est partie du carter du système de dépollution.  - the envelope is part of the crankcase of the pollution control system.
De manière avantageuse, l’enveloppe est partie du carter du système de dépollution, issue par exemple de moulage. La fabrication et l’assemblage sont simplifiés.  Advantageously, the envelope is part of the housing of the pollution control system, resulting for example from molding. Manufacturing and assembly are simplified.
- l’enveloppe est partie de l’embout de connexion.  - The envelope is part of the connection tip.
De manière avantageuse, l’enveloppe selon un autre mode de réalisation est partie de l’embout du système de dépollution, ladite enveloppe est alors rapportée autour dudit embout ; ce qui permet une adaptation simple de l’invention à un carter de système de dépollution et un embout existants.  Advantageously, the envelope according to another embodiment is part of the tip of the pollution control system, said envelope is then reported around said tip; which allows a simple adaptation of the invention to an existing pollution control system housing and nozzle.
- l’enveloppe est formée par une feuille métallique.  the envelope is formed by a metal sheet.
De manière avantageuse, l’enveloppe est formée par un enroulement de feuille métallique, ce qui permet une facilité de fabrication et une adaptation facile entre l’enveloppe et l’embout.  Advantageously, the casing is formed by a sheet metal winding, which allows ease of manufacture and easy adaptation between the casing and the endpiece.
- l’enveloppe séparée de la paroi tubulaire.  - the envelope separated from the tubular wall.
De manière avantageuse, l’enveloppe est séparée de la paroi tubulaire pour éviter des transferts de chaleur par conduction entre ladite enveloppe et la paroi tubulaire de l’embout.  Advantageously, the casing is separated from the tubular wall to prevent heat transfer by conduction between said casing and the tubular wall of the endpiece.
- le dispositif comprend une couche d’isolant thermique disposée entre l’enveloppe et la paroi tubulaire. De manière avantageuse, le dispositif comprend une couche d’isolant thermique disposée entre l’enveloppe et la paroi tubulaire afin d’obtenir une protection thermique optimale de l’embout. - The device comprises a thermal insulation layer disposed between the casing and the tubular wall. Advantageously, the device comprises a layer of thermal insulation disposed between the casing and the tubular wall in order to obtain optimum thermal protection of the tip.
Brève description des figures Brief description of the figures
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés sur les dessins annexés, dans lesquels :  Other features and advantages of the invention will appear on reading the following description of particular embodiments of the invention given as non-limiting examples and shown in the accompanying drawings, in which:
- la figure 1 est une vue schématique d’un dispositif de recirculation de gaz brûlés avec un système de dépollution.  - Figure 1 is a schematic view of a flue gas recirculation device with a pollution control system.
- la figure 2 est une vue schématique de coupe longitudinale d’un embout de connexion d’un échangeur de chaleur avec une paroi tubulaire enfoncée dans une ouverture de sortie du carter du système de dépollution.  - Figure 2 is a schematic longitudinal sectional view of a connecting end of a heat exchanger with a tubular wall driven into an outlet opening of the housing of the pollution control system.
- la figure 3 est une vue schématique en coupe longitudinale de l’enveloppe selon un mode de réalisation de l’invention.  - Figure 3 is a schematic longitudinal sectional view of the envelope according to one embodiment of the invention.
- la figure 4 est une vue schématique en coupe longitudinale de l’enveloppe avec l’embout selon le mode de réalisation de l’invention.  - Figure 4 is a schematic longitudinal sectional view of the envelope with the nozzle according to the embodiment of the invention.
- la figure 5 est une schématique de l’échangeur selon un deuxième mode de réalisation.  - Figure 5 is a schematic of the exchanger according to a second embodiment.
- la figure 6 est une vue schématique de l’enveloppe selon le deuxième mode de réalisation.  - Figure 6 is a schematic view of the envelope according to the second embodiment.
- la figure 7 est une vue schématique du dispositif de recirculation de gaz brûlés avec le système de dépollution selon le deuxième mode de réalisation.  - Figure 7 is a schematic view of the flue gas recirculation device with the pollution control system according to the second embodiment.
- la figure 8 est une vus schématique de coupe longitudinale de l’embout selon le deuxième mode de réalisation.  - Figure 8 is a schematic view of longitudinal section of the nozzle according to the second embodiment.
Description détaillée des figures Detailed description of the figures
Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires. La figure 1 représente un dispositif de recirculation des gaz brûlés issus de la combustion de mélange d’air et de carburant dans une chambre à combustion d’un moteur thermique ou à combustion interne (non représentés). In the following description, like reference numerals designate like parts or having similar functions. FIG. 1 represents a device for recirculating burnt gases resulting from the combustion of an air and fuel mixture in a combustion chamber of a heat engine or internal combustion engine (not shown).
De manière générale, le moteur thermique d’un véhicule automobile comprend un carter-cylindres surmonté d’une culasse. Dans le carter-cylindres sont creusés des cylindres dans chacun desquels coulisse un piston. Le volume délimité par la paroi du cylindre, le piston et une paroi inférieure de la culasse forme une chambre à combustion. Dans ladite chambre sont injectés du carburant et des gaz composés d’air frais principalement et de gaz recirculés pour former un mélange qui est comprimé par la montée du piston pour être brûlé ensuite. Les gaz brûlés s’échappent via des conduits d’échappement contrôlés par des soupapes d’échappement vers un collecteur d’échappement apte à dirigés lesdits gaz brûlés vers un système de dépollution 100. Le système de dépollution peut comprendre divers éléments de dépollution dont un catalyseur associé avec un filtre à particules par exemple, lesdits éléments sont logés à l’intérieur d’un carter 101 sensiblement cylindrique.  In general, the engine of a motor vehicle comprises a crankcase surmounted by a cylinder head. In the cylinder block are drilled cylinders in each of which slides a piston. The volume defined by the wall of the cylinder, the piston and a bottom wall of the cylinder head form a combustion chamber. In said chamber are injected fuel and gas composed mainly of fresh air and recirculated gas to form a mixture which is compressed by the rise of the piston to be burned next. The flue gases escape via exhaust ducts controlled by exhaust valves to an exhaust manifold adapted to direct said flue gases to a pollution control system 100. The pollution control system may comprise various pollution control elements including a catalyst associated with a particle filter for example, said elements are housed inside a housing 101 substantially cylindrical.
Les gaz brûlés subissent le traitement de dépollution au passage au travers des éléments de dépollution et une partie desdits gaz brûlés en sortie du système de dépollution 100 est reprise pour être ramenée dans l’admission d’air du moteur afin de réduire les émissions de gaz polluants, grâce à un circuit de recirculation 10 des gaz brûlés. Le circuit de recirculation des gaz brûlés prélevés en aval selon le sens d’écoulement des gaz brûlés, du système de dépollution est dit « basse pression ». Un autre circuit peut également ramener des gaz brûlés vers l’admission du moteur mais en amont du système de dépollution et est dit « haute pression ». L’invention concerne le circuit de recirculation des gaz brûlés « basse pression ».  The flue gases undergo the depollution treatment passing through the pollution control elements and a portion of the exhaust gas exhausted from the pollution control system 100 is taken back to be returned to the engine air intake to reduce gas emissions. pollutants, thanks to a recirculation circuit 10 of the burnt gases. The flue gas recirculation circuit taken downstream according to the flow direction of the flue gases, the pollution control system is called "low pressure". Another circuit may also bring burnt gases to the engine intake but upstream of the pollution control system and is called "high pressure". The invention relates to the "low pressure" flue gas recirculation circuit.
Cependant, les gaz en sortie du système de dépollution 100 sont très chauds ce qui réduit la masse des gaz avant leur entrée dans le circuit d’admission du moteur et donc le rendement dudit moteur. Il est connu d’adjoindre au circuit de recirculation des gaz brûlés basse pression un refroidisseur des gaz brûlés. Le refroidisseur peut être un échangeur eau-air 102 dans lequel les gaz brûlés transfèrent une quantité calorifique à l’eau qui emporte cette chaleur par exemple vers un radiateur (non représenté) généralement en face avant du véhicule. However, the gases leaving the pollution control system 100 are very hot which reduces the weight of the gases before entering the engine intake circuit and therefore the efficiency of said engine. It is known to add to the low-pressure flue gas recirculation circuit a flue gas cooler. The cooler may be a water-air heat exchanger 102 in which the flue gases transfer a heat quantity to the water which carries this heat for example to a radiator (not shown) generally on the front of the vehicle.
Le circuit de recirculation des gaz brûlés comprend différents éléments de recirculation parmi lesquels une vanne EGR pour «Exhaust gas recirculation » ou recirculation de gaz brûlés, un refroidisseur 102 desdits gaz.  The flue gas recirculation circuit comprises various recirculation elements among which an EGR valve for "Exhaust gas recirculation" or recirculation of flue gases, a cooler 102 of said gases.
La figure 2 présente la connexion de l’échangeur eau-gaz 102 du dispositif de recirculation 10 des gaz brûlés avec le système de dépollution 100.  FIG. 2 shows the connection of the water-gas exchanger 102 of the flue gas recirculation device 10 with the pollution control system 100.
Le refroidisseur 102 comporte un embout de connexion 11 sensiblement cylindrique entourant des conduites longitudinales 104 de gaz qui sont baignées dans une chambre de transfert 103 remplie de liquide de refroidissement. Le liquide de refroidissement est à base d’eau et entre dans ladite chambre transfert 103 par une ouverture d’entrée 105 et en ressort par une issue 106 pour être conduit ensuite vers un radiateur (non représenté).  The cooler 102 has a substantially cylindrical connection tip 11 surrounding longitudinal gas lines 104 which are immersed in a transfer chamber 103 filled with coolant. The coolant is water-based and enters said transfer chamber 103 through an inlet opening 105 and exits through an outlet 106 to be subsequently conducted to a radiator (not shown).
L’embout de connexion 11 comporte une paroi tubulaire 12 et est enfoncé à travers une ouverture de sortie 107 dans une paroi 108 sensiblement conique de sortie du carter 101 du système de dépollution.  The connection endpiece 11 has a tubular wall 12 and is pushed through an outlet opening 107 into a substantially conical wall 108 of the outlet of the housing 101 of the pollution control system.
Une partie des gaz chauds est dirigée par la paroi conique 108 du carter 101 et viennent frapper latéralement ladite paroi tubulaire 12 de l’embout pour former une zone de températures élevées affectant les caractéristiques thermiques du liquide de refroidissement, en contact.  Part of the hot gases is directed by the conical wall 108 of the housing 101 and strike laterally said tubular wall 12 of the nozzle to form a high temperature zone affecting the thermal characteristics of the cooling liquid, in contact.
L’invention propose une protection de la paroi tubulaire 12 de l’embout de connexion 11 contre cette partie de gaz brûlés.  The invention proposes a protection of the tubular wall 12 of the connecting piece 11 against this part of burnt gases.
Les figures 3 et 4 représentent un premier mode de réalisation de l’invention. Le dispositif de recirculation 10 selon l’invention comprend une enveloppe 14 formée par une feuille métallique par exemple en tôle en acier inox de faible épaisseur comprise entre 0.2mm et 0.5mm. Ladite enveloppe 14 entoure la paroi tubulaire 12 de l’embout de connexion 11 quand celui-ci est monté et enfoncé dans la paroi 108 du carter 101. L’enveloppe 14 est tubulaire pour permettre le logement de l’embout de connexion.  Figures 3 and 4 show a first embodiment of the invention. The recirculation device 10 according to the invention comprises a casing 14 formed by a metal foil, for example sheet steel stainless steel thin between 0.2mm and 0.5mm. Said envelope 14 surrounds the tubular wall 12 of the connecting piece 11 when it is mounted and pressed into the wall 108 of the casing 101. The casing 14 is tubular to allow the housing of the connection piece to be housed.
De manière préférentielle, l’enveloppe présente une paroi extérieure 15 en contact avec les gaz brûlés, apte à dévier les gaz brûlés dans une direction opposée à la paroi tubulaire 12. On entend par « direction opposée à la paroi tubulaire » une direction s’éloignant de la paroi tubulaire. Ladite paroi extérieure 15 peut présenter une forme sensiblement conique avec un angle de déviation a par exemple pour former sensiblement un déflecteur 16 des flux de gaz brûlés. Preferably, the casing has an outer wall 15 in contact with the flue gases, capable of deflecting the flue gases in a direction opposite to the tubular wall. The term "direction opposite to the wall tubular "a direction away from the tubular wall. Said outer wall 15 may have a substantially conical shape with a deflection angle α for example to substantially form a deflector 16 of the flue gases.
De manière préférentielle, l’enveloppe 14 est séparée de la paroi tubulaire 12 de l’embout 11 de connexion. De cette façon, aucun transfert de chaleur par conduction thermique entre l’enveloppe 14 et la paroi tubulaire 12 ne peut être effectué.  Preferably, the envelope 14 is separated from the tubular wall 12 of the connector 11. In this way, no thermal transfer of heat between the casing 14 and the tubular wall 12 can be performed.
De manière préférentielle, le diamètre intérieur de l’enveloppe 14 est sensiblement égal au diamètre extérieur de l’embout de connexion 11. Ainsi aucun flux de gaz chauds ne circule entre l’enveloppe et la paroi tubulaire de l’embout.  Preferably, the inside diameter of the casing 14 is substantially equal to the outside diameter of the connection endpiece 11. Thus no hot gas flow circulates between the casing and the tubular wall of the endpiece.
Selon le premier mode de réalisation, l’enveloppe 14 est partie du carter 101 du système de dépollution 100. Tel que représenté en figure 3, l’enveloppe 14 est sensiblement cylindrique avec une extrémité 17 tournée vers le système de dépollution légèrement étranglée et comprenant des griffes 18 de fixation. L’enveloppe 14 est facilement agrippée à l’embout de connexion 11 quand ledit embout est enfoncé dans la paroi 108 du carter 101. Les griffes de fixation 18 permettent également un positionnement optimal de l’enveloppe 14 par rapport à la paroi tubulaire 12 de l’embout de connexion pour maintenir une séparation 19 entre l’enveloppe 14 et la paroi tubulaire 12, c’est-à-dire que l’enveloppe 14 est maintenue à distance de la paroi tubulaire 12, sans contact.  According to the first embodiment, the casing 14 is part of the housing 101 of the pollution control system 100. As shown in Figure 3, the casing 14 is substantially cylindrical with an end 17 facing the slightly strangled depollution system and comprising claws 18 fixing. The casing 14 is easily gripped at the connection endpiece 11 when said endpiece is pressed into the wall 108 of the casing 101. The fixing claws 18 also allow optimal positioning of the casing 14 with respect to the tubular wall 12 of the casing the connection tip to maintain a separation 19 between the casing 14 and the tubular wall 12, that is to say that the casing 14 is kept at a distance from the tubular wall 12, without contact.
Ladite séparation 19 ou espace de séparation est remplie par une couche d’air ou de gaz formant une couche isolante entre l’enveloppe et la paroi tubulaire. L’espace de séparation peut être fermé ou de dimension adaptée pour empêcher une circulation de gaz dans ledit espace de séparation 19. Par exemple, l’épaisseur dudit espace est très faible de l’ordre du mm, ou l’accès audit espace de séparation est fermé ou recouvert par l’enveloppe 14.  Said separation 19 or separation space is filled by a layer of air or gas forming an insulating layer between the envelope and the tubular wall. The separation space may be closed or of suitable size to prevent a flow of gas in said separation space 19. For example, the thickness of said space is very small of the order of mm, or access to said space of separation is closed or covered by the envelope 14.
Selon un deuxième mode de réalisation de l’invention représenté dans les figures 5 à 8, l’enveloppe 14 est partie de l’embout 11 de connexion.  According to a second embodiment of the invention shown in FIGS. 5 to 8, the envelope 14 is part of the connector 11.
Selon les figures 5 et 6, l’enveloppe 14 est formée par une feuille métallique enroulée autour de la paroi tubulaire 12 de l’embout de connexion. Elle repose uniquement sur les extrémités longitudinales 17,17’ de l’embout et est séparée de la paroi tubulaire 12 pour former un espace de séparation 19 entre l’enveloppe 14 et la paroi tubulaire 12 de l’embout de connexion. L’enveloppe peut être constituée par une feuille métallique cylindrique représentée en figure 6, elle est enroulée ou enfilée autour de la paroi tubulaire 12 comme représenté en figure 7. L’espace de séparation 19 entre l’enveloppe 14 et la paroi tubulaire 12 est de faible épaisseur et peut être rempli d’air ou par une couche d’isolant thermique 21 tel qu’une couche à base de fibres de verre et de résines hautes températures ou de céramique. According to Figures 5 and 6, the casing 14 is formed by a metal sheet wound around the tubular wall 12 of the connection piece. It rests solely on the longitudinal ends 17, 17 'of the end piece and is separated from the tubular wall 12 to form a separation space 19 between the casing 14 and the tubular wall 12 of the connection piece. The casing may consist of a cylindrical metal sheet shown in FIG. 6, it is wound or threaded around the tubular wall 12 as shown in FIG. 7. The separation space 19 between the casing 14 and the tubular wall 12 is thin and can be filled with air or a layer of thermal insulation 21 such as a layer based on glass fibers and high temperature resins or ceramic.
De manière préférentielle et selon la figure 8, l’enveloppe 14 peut s’étendre selon l’axe de l’embout sur une longueur plus importante que la longueur d’enfoncement 20 de l’embout 11 dans le carter 101 c’est-à-dire que l’enveloppe 14 dépasse à l’extérieur du carter 101 du système de dépollution 100 pour accroître l’isolation thermique de l’embout de connexion et améliorer l’efficacité de l’échangeur.  Preferably, and according to FIG. 8, the casing 14 can extend along the axis of the endpiece over a longer length than the insertion length 20 of the endpiece 11 in the housing 101. that is, the envelope 14 protrudes outside the housing 101 of the pollution control system 100 to increase the thermal insulation of the connection tip and improve the efficiency of the exchanger.
L’objectif est atteint : l’enveloppe couvrant la portion de l’embout de connexion de l’échangeur enfoncée dans le carter permet une protection thermique dudit embout contre des flux de gaz chauds venant frapper la paroi tubulaire latérale dudit embout, ladite enveloppe étant simple à fabriquer et à mettre en place.  The objective is achieved: the envelope covering the portion of the connecting end of the exchanger driven into the housing allows a thermal protection of said nozzle against hot gas flows from striking the lateral tubular wall of said nozzle, said envelope being simple to manufacture and set up.
Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de cette prise, décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes.  As goes without saying, the invention is not limited to the embodiments of this plug, described above as examples, it encompasses all variants.
Ainsi dans le cadre d’une isolation thermique renforcée, on pourra augmenter l’épaisseur de la couche d’isolant disposée entre l’enveloppe et la paroi tubulaire, ce qui nécessite néanmoins d’accroitre l’ouverture du carter du système de dépollution.  Thus in the context of a reinforced thermal insulation, it will be possible to increase the thickness of the insulating layer disposed between the casing and the tubular wall, which nevertheless requires increasing the opening of the casing of the pollution control system.

Claims

REVENDICATIONS
1. Dispositif de recirculation (10) de gaz brûlés d’un groupe motopropulseur de véhicule automobile comprenant : A device for recirculating (10) burnt gases from a motor vehicle power train comprising:
- un carter (101 ) d’un système de dépollution (100) de gaz brûlés, a casing (101) of a system for the pollution control (100) of burnt gases,
- un échangeur de chaleur (102) entre un liquide de refroidissement et lesdits gaz brûlés et présentant un embout de connexion (11 ) avec une paroi tubulaire (12) enfoncé dans une ouverture (108) de sortie du carter du système de dépollution, a heat exchanger (102) between a cooling liquid and said burned gases and having a connecting end (11) with a tubular wall (12) pressed into an opening (108) of the outlet of the decontamination system casing,
caractérisé en ce que le dispositif (10) comprend une enveloppe (14) apte à entourer la paroi tubulaire (12) de l’embout de connexion.  characterized in that the device (10) comprises a casing (14) adapted to surround the tubular wall (12) of the connecting piece.
2. Système de recirculation (10) selon la revendication 1 , caractérisé en ce que l’enveloppe (14) est tubulaire. 2. Recirculation system (10) according to claim 1, characterized in that the casing (14) is tubular.
3. Système de recirculation (10) selon la revendication 1 ou 2, caractérisé en ce que l’enveloppe (14) est apte à dévier les flux de gaz brûlés vers une direction opposée à la paroi tubulaire. 3. Recirculation system (10) according to claim 1 or 2, characterized in that the casing (14) is adapted to deflect the flue gas streams to a direction opposite to the tubular wall.
4. Système de recirculation (10) selon l’une quelconque des revendications 1 à 3, caractérisé en ce que l’enveloppe (14) est formée par une feuille métallique. 4. Recirculation system (10) according to any one of claims 1 to 3, characterized in that the casing (14) is formed by a metal sheet.
5. Système de recirculation (10) selon l’une quelconque des revendications 1 à 4, caractérisé en ce que l’enveloppe (14) est séparée de la paroi tubulaire (12). 5. Recirculation system (10) according to any one of claims 1 to 4, characterized in that the casing (14) is separated from the tubular wall (12).
6. Système de recirculation (10) selon l’une quelconque des revendications 1 à 5, caractérisé en ce que le dispositif (10) comprend une couche d’isolant thermique disposée entre l’enveloppe (14) et la paroi tubulaire 6. recirculation system (10) according to any one of claims 1 to 5, characterized in that the device (10) comprises a layer of thermal insulation disposed between the casing (14) and the tubular wall
7. Système de recirculation (10) selon l’une quelconque des revendications 1 à 6, caractérisé en ce que l’enveloppe (14) est partie du carter (101 ) du système de dépollution (100). 7. recirculation system (10) according to any one of claims 1 to 6, characterized in that the casing (14) is part of the housing (101) of the pollution control system (100).
8. Système de recirculation (10) selon la revendication 7, caractérisé en ce que le diamètre intérieur de l’enveloppe (14) est sensiblement égal au diamètre extérieur de l’embout (11 ) de connexion.  8. recirculation system (10) according to claim 7, characterized in that the inner diameter of the casing (14) is substantially equal to the outer diameter of the connection piece (11).
9. Système de recirculation (10) selon l’une quelconque des revendications 1 à 6, caractérisé en ce que l’enveloppe (14) est partie de l’embout (11 ) de connexion. 9. recirculation system (10) according to any one of claims 1 to 6, characterized in that the casing (14) is part of the connector (11) connection.
EP18789166.8A 2017-11-15 2018-10-24 Powertrain with improved pollutant removal system Active EP3710688B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1760753A FR3073574A1 (en) 2017-11-15 2017-11-15 MOTOR POWERTRAIN WITH IMPROVED DEPOLLUTION SYSTEM
PCT/EP2018/079172 WO2019096553A1 (en) 2017-11-15 2018-10-24 Powertrain with improved pollutant removal system

Publications (2)

Publication Number Publication Date
EP3710688A1 true EP3710688A1 (en) 2020-09-23
EP3710688B1 EP3710688B1 (en) 2021-08-25

Family

ID=60923730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18789166.8A Active EP3710688B1 (en) 2017-11-15 2018-10-24 Powertrain with improved pollutant removal system

Country Status (4)

Country Link
EP (1) EP3710688B1 (en)
CN (1) CN111295505B (en)
FR (1) FR3073574A1 (en)
WO (1) WO2019096553A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2659720B2 (en) 1987-09-11 1997-09-30 三菱重工業株式会社 Exhaust heat exchanger
DE10054264A1 (en) * 2000-11-02 2002-05-08 Opel Adam Ag Intake pipe unit for feeding air into combustion chambers in a multi-cylinder internal combustion engine has an air-collection chamber, a throttle valve connection piece with an adjustable throttle valve and gas exchange valves.
JP4931390B2 (en) * 2005-09-12 2012-05-16 臼井国際産業株式会社 EGR gas cooling device
CN101832201B (en) * 2010-04-29 2012-05-02 重庆长安汽车股份有限公司 Connection structure of engine exhaust gas recirculation pipe and plastic intake manifold
FR3014947B1 (en) * 2013-12-13 2017-12-29 Renault Sas INTERNAL COMBUSTION ENGINE EXHAUST LINE AND INTERNAL COMBUSTION ENGINE COMPRISING SUCH AN EXHAUST LINE
FR3041033B1 (en) * 2015-09-15 2017-09-15 Renault Sas EXHAUST LINE AND AIR CIRCUIT FOR MOTOR VEHICLE MOTOR FOR OPTIMIZED INTEGRATION OF THE EXHAUST GAS RECIRCULATION CIRCUIT
GB2546488B (en) * 2016-01-19 2020-05-13 Ford Global Tech Llc An engine exhaust gas recirculation system with at least one exhaust recirculation treatment device
GB2559182B (en) * 2017-01-30 2021-01-06 Senior Uk Ltd Finned heat exchangers

Also Published As

Publication number Publication date
EP3710688B1 (en) 2021-08-25
CN111295505B (en) 2022-07-26
FR3073574A1 (en) 2019-05-17
WO2019096553A1 (en) 2019-05-23
CN111295505A (en) 2020-06-16

Similar Documents

Publication Publication Date Title
FR2908472A1 (en) METHOD FOR SUPPLYING EXHAUST GAS TO AN ENGINE, EXHAUST ELEMENT, EXHAUST LINE AND VEHICLE COMPRISING MEANS FOR SUPPLYING SUCH AN EXHAUST GAS ENGINE
WO2012062715A1 (en) Gas distribution manifold and corresponding gas intake module
EP3710688B1 (en) Powertrain with improved pollutant removal system
FR2920829A1 (en) Air intake system for turbine i.e. gas turbine, has injecting unit mounted on small diameter part of intake pipe, and comprising tube provided with calibrated elements for discharging extraction air from compressor into intake pipe
WO2008142263A2 (en) Installation for cooling recirculated internal combustion engine exhaust gases and control valve for the flow of said gases
EP1271052A1 (en) Radiant tube burner with flue gas recirculation having reduced NOx production
FR3071556A1 (en) EXHAUST GAS COOLER AND EXHAUST GAS REINJECTION SYSTEM EQUIPPED WITH AN EXHAUST GAS COOLER
EP3827161A1 (en) Thermal insulation device for the exhaust of a heat engine
EP0718480A1 (en) Exhaust apparatus for internal combustion engine
EP2469066B1 (en) Manifold for distributing gas in the intake ducts of a heat engine of an automobile and intake module provided with such a manifold
FR2824361A1 (en) EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
WO2009056719A2 (en) Device for injecting air into an exhaust line
EP2818822B1 (en) Heat exchanger fitted on an air intake line of an internal combustion engine
WO2021170442A1 (en) Egr circuit exchanger with ventilation
WO2007148000A1 (en) Exhaust device comprising a cylinder head with a thermally decoupled integrated exhaust manifold
FR2721349A1 (en) Exhaust gas recirculator for IC engine
FR3082241A1 (en) INTAKE DISTRIBUTOR FOR A HEAT ENGINE WITH RECIRCULATED GAS MIXING DEVICE
FR3026788A3 (en) COOLING HEAT EXHAUST PONTET
FR2738289A1 (en) IC engine exhaust duct
FR3120398A1 (en) Trapezoidal section tube exchanger device
FR2925609A1 (en) Intake collector for internal combustion engine of vehicle, has injection nozzle opening into intake duct in mounting position, where nozzle tangentially extends to inner wall of intake duct in mounting position
FR2727466A1 (en) I.C. engine manifold for connecting exhaust pipe inlet to outlet of exhaust passages in cylinder head
FR2934362A1 (en) Cooling exchanger for internal combustion engine of motor vehicle, has set of passages for exhaust gas recirculated through cooling liquid circuit, and set of external air flowing channels permitting flow of external air through circuit
FR3082566A1 (en) INLET CONE AND HEAT EXCHANGER OF AN EXHAUST GAS RECIRCULATION LINE, CORRESPONDING ASSEMBLY
WO2021170440A1 (en) Combustion engine exhaust line having a system for preheating a pollution control element

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200410

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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602018022531

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: F02M0026120000

Ipc: F02M0026110000

RIC1 Information provided on ipc code assigned before grant

Ipc: F01N 13/18 20100101ALI20210310BHEP

Ipc: F01N 3/10 20060101ALI20210310BHEP

Ipc: F01N 3/021 20060101ALI20210310BHEP

Ipc: F02M 26/32 20160101ALI20210310BHEP

Ipc: F02M 26/30 20160101ALI20210310BHEP

Ipc: F02M 26/15 20160101ALI20210310BHEP

Ipc: F02M 26/12 20160101ALI20210310BHEP

Ipc: F02M 26/11 20160101AFI20210310BHEP

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: 20210514

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: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

Ref country code: AT

Ref legal event code: REF

Ref document number: 1424038

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018022531

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210825

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1424038

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210825

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

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: 20211227

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: 20211125

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: 20211125

Ref country code: AT

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20211126

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: NISSAN MOTOR CO., LTD.

Owner name: RENAULT S.A.S

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: 20210825

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: 20210825

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018022531

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211031

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

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: 20210825

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

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: NISSAN MOTOR CO., LTD.

Owner name: RENAULT S.A.S

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: 20211024

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: 20210825

Ref country code: BE

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

Effective date: 20211031

26N No opposition filed

Effective date: 20220527

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

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: 20210825

Ref country code: LI

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

Effective date: 20211031

Ref country code: CH

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

Effective date: 20211031

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: 20211024

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

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: 20210825

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

Ref country code: HU

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

Effective date: 20181024

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

Ref country code: GB

Payment date: 20231020

Year of fee payment: 6

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

Ref country code: FR

Payment date: 20231026

Year of fee payment: 6

Ref country code: DE

Payment date: 20231020

Year of fee payment: 6

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: 20210825