• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The purification device comprises a tubular casing having a central axis, an exhaust gas purification member housed in the tubular casing, an electric heating member housed in the tubular casing and a power supply electrically supplying the casing member. heating, the heating member comprising a heating plate (33) of electrically conductive material extending in a plane substantially perpendicular to the central axis, the heating plate (33) having a solid center (35) and at least two branches (37), each leg (37) spirally extending from the solid center (35) to a free end (39) in the vicinity of the tubular casing, the heating plate (33) being permeable to exhaust gas and comprising a network of passages for the exhaust gas generating a turbulent flow of the exhaust gas through the heating plate (33).
    公开号:FR3080148A1
    申请号:FR1853167
    申请日:2018-04-11
    公开日:2019-10-18
    发明作者:Eric Ottaviani；Jean-Paul Brunel
    申请人:Faurecia Systemes dEchappement SAS；
    IPC主号:
    专利说明:

    Exhaust line, exhaust gas purification device and method of manufacturing the purification device
    The present invention relates to devices for purifying vehicle exhaust gases, equipped with heating elements.
    It is possible to produce the heating element using metal sheets, superimposed parallel to each other and rolled, as proposed by DE102007010758.
    Such a heating device channels the exhaust gases in a laminar flow. This does not promote heat transfers from the heater to the exhaust gases.
    In addition, the heater is not very rigid, and must be fixed at multiple points on the purification device. These attachment points are typically rods integral with the heating member and engaged in the channels of the purification member. This makes the use of a ceramic purification device problematic due to its fragility and requires that the latter be made of metal, the cost of which is higher compared to a ceramic purification device.
    In this context, the invention aims to propose a purification device which does not have the above defects.
    To this end, the invention according to a first aspect relates to a device for purifying exhaust gases from a vehicle, the purification device comprising a tubular casing having a central axis, a member for purifying exhaust gases housed in the tubular casing, an electric heating member housed in the tubular casing and an electrical supply supplying electrically the heating member, the heating member comprising a heating plate made of an electrically conductive material extending in a plane substantially perpendicular to the central axis, the heating plate having a solid center and at least two branches, each branch extending in a spiral from the solid center to a free end located near the tubular casing, the heating plate being permeable to exhaust gases and comprising a network of passages for the exhaust gas generating turbulent flow of exhaust gases through the heating plate.
    The use of a heating plate made of an electrically conductive material, comprising a network of exhaust gas passages generating a turbulent flow of exhaust gases through the heating plate, makes it possible to facilitate the 35 heat transfers between the heating and exhaust gases. The power of the heating element can be reduced, which allows lower electrical consumption.
    The plate can be obtained directly by cutting from a one-piece plate. Its manufacture is therefore economical.
    The heater is rigid enough to be attached only by its edges. The plate must not have fasteners distributed over its entire surface. The assembly is therefore facilitated. In addition, it becomes possible to use a ceramic purification device, since it must no longer carry the fasteners of the heating device.
    The use of branches extending in a spiral from the solid center to a free end located near the tubular envelope makes it possible to obtain the desired length for the path of the electric current, and therefore the required heating power , while distributing the heat supply in the section of the tubular envelope. The spiral shape also helps absorb thermal expansion without creating too many stresses in the plate.
    The purification device can also have one or more of the characteristics below, considered individually or in any technically possible combination:
    - the heating plate comprises at least three branches each extending in a spiral from the solid center to a free end located near the tubular casing;
    - the heating plate has come in one piece;
    - the heating plate is a foam;
    - The heating plate has a thickness of between 2 and 50 mm;
    - the heating plate comprises exactly two branches, each branch winding at least 360 ° around the solid center;
    - the heating plate comprises exactly four branches, each branch winding at least 180 ° around the solid center;
    - the heating plate is coated with at least one coating with a catalytic function making it possible to contribute to the aftertreatment of the exhaust gases.
    The invention according to a second aspect relates to a process for manufacturing the purification device having the above characteristics and comprising the following steps:
    - obtaining a plate in said metallic material;
    - cutting the plate to form the heating plate.
    3
    The invention according to a third aspect relates to an exhaust line comprising a purification device having the above characteristics.
    Other characteristics and advantages will emerge from the detailed description which is given below, for information and in no way limitative, with reference to the appended figures, among which:
    - Figure 1 is a simplified schematic representation of an exhaust line comprising a purification device according to the invention;
    - Figure 2 is a perspective view of the heater of Figure 1, mounted in the envelope of the purification member;
    - Figure 3 is a perspective view of the heater of Figure 1, with a power supply different from that of Figure 2;
    - Figure 4 is a perspective view of the heater of Figure 3 in operation, showing the temperature levels of different areas of the heating plate;
    - Figure 5 is a top view of a heating plate according to an alternative embodiment less advantageous than that of Figures 2 to 4;
    - Figure 6 is a view similar to that of Figure 4, for the hot plate of Figure 5;
    - Figures 7 to 10 are top views of a heating plate according to different embodiments of the invention; and
    - Figure 11 is a perspective view of the heater of Figure 7, with another alternative embodiment of the power supply.
    The purification device 1 shown diagrammatically in FIG. 1 is intended for the purification of the exhaust gases of a vehicle, typically the exhaust gases of a car or a truck.
    It is inserted in the exhaust line 3 of the vehicle. This comprises an exhaust manifold 5 collecting the exhaust gases leaving the combustion chambers of the heat engine 7 of the vehicle.
    The purification device 1 is fluidly connected to the manifold 5 by an upstream conduit 9, on which other equipment such as a turbocharger is typically inserted.
    Towards the downstream, the purification device 1 is fluidly connected by a downstream conduit 11 to a cannula 13. Other equipment such as silencers or other purification equipment, are interposed between the purification device 1 and the cannula
    13. The purified exhaust gases are released into the atmosphere through the cannula 13.
    The purification device 1 comprises a tubular casing 15 having a central axis C, an exhaust gas purification member 17 housed in the tubular casing 15, an electric heating member 19 housed in the tubular casing 15, and a electrical supply 21 electrically supplying the heating member 19.
    The tubular casing 15 has an inlet 23 and an outlet 25 for exhaust gases, connected respectively to the upstream 9 and downstream 11 conduits.
    The tubular casing 15 has any suitable shape.
    The purification member 17 is for example an SCR catalyst, a three-way catalyst, an oxidation catalyst or a NOx trap.
    As shown in FIG. 1, a retaining ply 27 is interposed between the purification member 17 and the tubular casing 15.
    Typically, one or more purification members are placed in the tubular casing 15.
    The heating member 19 is advantageously placed opposite and close to the inlet face 29 of the purification member 17. As a variant, the heating member 19 is placed opposite and close to the outlet face 31 of the purification member 17, that is to say downstream of the latter. The inlet 29 and outlet 31 faces are the faces through which the exhaust gases enter and leave the purification member 17.
    As a variant, the heating member 19 is placed at a distance upstream from the purification member 17.
    As shown in Figure 2, the heater 19 includes a heating plate 33 of an electrically conductive material, extending in a plane substantially perpendicular to the central axis C.
    Typically, the heating plate 33 heats by Joule effect.
    The heating plate 33 is permeable to exhaust gases. It includes a network of passages for exhaust gases, generating a turbulent flow of exhaust gases through the heating plate 33.
    The material constituting the heating plate 33 is typically a metal, such as stainless steel, or a metal alloy, or even a ceramic. For example, this material is an iron alloy, such as FeCrAI. Alternatively, this material is a nickel or copper alloy, such as NiCr. According to another variant, this material is a ceramic made of silicon carbide SiC.
    The heating plate 33 is typically a foam, with open pores organized randomly or regularly.
    Alternatively, the heating plate 33 is a lattice of metal wires.
    The pore density is typically between 5 ppi (pore per inch) and 40 ppi. The material typically has a developed surface of between 500 and 5000 m2 / m3, preferably between 1000 and 3000 m2 / m3, and more preferably between 1500 and 2500 m2 / m3.
    Advantageously, the heating plate 33 is coated with at least one coating with a catalytic function making it possible to contribute to the post-treatment of the exhaust gases. This coating is intended for the oxidation and / or reduction of polluting compounds in exhaust gases. It can, for example, be of the same type as those used in TWC (Three-way Catalyst or Catalyst Three Way), DOC (Diesel Oxydation Catalysis), PNA (Passive NOx Absorber, LNT) (Lean NOx Trap or Poor NOx Trap), SCR (Selective Catalytic Reduction) or also for the hydrolysis of a reducing agent used for the reduction of nitrogen oxides.
    Alternatively or in addition, this coating is intended to increase the roughness of the surface of the material, with a view to promoting turbulence and therefore heat exchange.
    Due to its porosity, the heating plate 33 also acts as a particle filter. The heating plate 33 is regenerated on each heating, the trapped soot particles being eliminated.
    Advantageously, the heating plate 33 has come in one piece. It's one piece, made of the same material.
    Typically, the heating plate 33 is obtained by cutting a plate from a single piece of the electrically conductive material.
    Alternatively, the heating plate 33 is obtained by foundry, extrusion, sintering, additive manufacturing (3D printing), etc.
    The heating plate 33 has a thickness between 2 and 50 mm, preferably between 5 and 30 mm, and more preferably between 10 and 20 mm.
    In other words, the heating plate 33 is in the form of a wafer of electrically conductive material, cut directly to the desired shape.
    Advantageously, the heating plate 33 has a solid center 35 and at least two branches 37, each branch 37 extending in a spiral from the solid center 35 to a free end 39 located near the tubular casing 15.
    The solid center 35 is typically located on the central axis C.
    The heating plate 33 typically comprises at least three branches 37 each extending in a spiral from the solid center 35 to a free end 39 located near the tubular casing 15, for example four branches 37 or more.
    The branches 37 are all wound in the same direction around the solid center 35. They are separated from each other by interstices of small widths, for example of width less than 50%, preferably 25%, of the width of a branch 37.
    Advantageously, the width of the gap is as small as possible, such as less than 5 mm, preferably less than 3 mm, and even more preferably less than 2 mm.
    Typically, the branches 37 all have the same shape, the position of a branch 37 deducing from the position of another branch 37 by rotation around the solid center 35.
    The heating plate 33 is mounted in a section 40 of the tubular casing
    15. The free ends 39 of the branches 37 each have an arcuate shape, with a curvature substantially identical to that of the section 40. They therefore extend parallel and close to the internal surface of the section 40. They are for example separated by a gap less than 5 mm wide from this internal surface. Preferably, the free ends 39 of the branches 37 are separated by a gap with a width of less than 3 mm, and even more preferably less than 2 mm from this internal surface.
    Thus, the heating plate 33 occupies substantially the entire free section of the section 40 of the tubular casing 15, perpendicular to the central axis C, so that most of the exhaust gas is forced to pass through the heating plate 33.
    In the alternative embodiment shown in Figures 2 to 4, the heating plate 33 comprises exactly four branches 37. In this case, each branch 37 is wound at least 180 ° around the solid center 35, preferably at least 270 °, more preferably over at least 360 ° around the solid center 35.
    The internal ends 41 of the four branches 37, connecting to the solid center 35, are arranged at 90 ° from each other. The two internal ends 41 opposite one another are therefore arranged in the extension of one another, which promotes the flow of electric current from one to the other.
    In the variant embodiment shown in FIGS. 5 to 7, the heating plate 33 comprises exactly two branches 37.
    In this case, each branch 37 is wound at least over 360 ° around the solid center 35, preferably at least over 540 °, more preferably at least over 720 ° around the solid center 35.
    Having a large number of branches 37 contributes to obtaining a uniform temperature in the heating plate 33, and therefore to obtaining better heating of the exhaust gases.
    This is highlighted by Figures 4 and 6, which show the temperature levels in two hot plates 33 in operation. The zones are graduated from a / to c /, a / corresponding to the lowest temperature and c / to the highest temperature.
    In FIG. 4, the heating plate 33 has four branches 37 each winding over approximately 360 °. Two circumferentially adjacent branches 37 are connected to one of the poles of the power supply, the other two branches being connected to the other pole of the power supply.
    In FIG. 6, the heating plate has two branches 37 each winding over approximately 360 °. The two branches 37, in the center, are connected to each other by an S-shaped portion, with two cusps.
    Electric current generally flows along the route with the lowest electrical resistance, that is, the shortest route.
    It can be seen in FIG. 6 that the branches 37 are relatively wide, and that the electric current preferentially flows along the lower surface of the branches 37. A large part of the lower surface of the branches 37 is in the zone b /, while the upper surface of branches 37 is in zone a /. The flow path on the lower side is shorter than on the upper side.
    We see in Figure 4 that the branches 37 are relatively narrow, because it is necessary to accommodate four branches 37 in the section. The electric current is distributed over the entire width of each branch 37. A large part of the branches 37 is in the zone b /, both on the lower surface and on the upper surface of the branches 37.
    For a given number of branches 37, the same result can be achieved by reducing the width of the branches 37, and therefore by increasing the length of the branches 37. Thus, the heating plate 33 of FIG. 7 has two branches 37, like the plate heater 33 of Figure 5, but the branches 37 are much longer and narrow (more than 720 °). The branches 37 of the heating plate 33 of FIG. Donc therefore have substantially the same width as those of FIGS. 2 to 4, so that the electric current is distributed over the entire width of each branch 37.
    Furthermore, FIG. 6 shows two particularly hot points (zone cl) at the level of the two cusps of the S-shaped part of the heating plate 33. The electric current "cuts" along these cusps, which constitute the shortest path to go from one branch 37 to another.
    In Figure 4, the size of the hot spots is reduced. Indeed, the electric current arriving at the full center 35 through the internal end 41 of a branch 37 tends to flow directly towards the branch 37 opposite. A fairly small part of the current flows to the neighboring branch 37 which has a different electrical potential, forming a hot spot similar to those of FIG. 6. The current flowing to the branch 37 opposite is distributed over the entire width of the branch 37. Thus, the greater the number of branches 37 connecting to the solid center 35, the more the hot spots are attenuated.
    The power supply 21 includes first and second terminals 43, 45 at first and second electrical potentials different from each other, and at least one electrically conductive support 47 rigidly fixed to a section 49 of the heating plate 33 , the support 47 being electrically connected to the free end 39 of at least one of the branches 37 and to the first terminal 43 of the electrical supply 21.
    The support 47 is rigidly fixed to the edge 49 of the heating plate 33 along one or more continuous areas, extending in total over at least 10% of a perimeter 20 of the heating plate. As a variant, the support 47 extends in total over at least 20%, or even at least 30%, of a perimeter of the heating plate 33.
    The support 47 is typically fixed to half of the branches 37. Thus, when the heating plate 33 has only two branches 37, the support 47 is fixed to a single branch 37, preferably along a continuous range. When the heating plate 33 has four branches 37, the support 47 is fixed to two branches 37 (Figure 3). It is fixed to each branch 37 preferably along a continuous range, the two continuous areas being separated by a gap.
    Considered in section perpendicular to the central axis C, the support 47 is interposed between the heating plate 33 and the tubular casing 15. It is rigidly fixed to the tubular casing 15 by electrically insulating fixings, not shown in the figures .
    A connector 51 passes through the tubular casing 15 through an orifice of this tubular casing 15. A ring 53 electrically isolates the connector 51 from the tubular casing 15. The connector 51 provides the electrical connection of the support 47 to the first terminal 43 of the power supply 21.
    Advantageously, the electrical supply 21 comprises another electrically conductive support 55, rigidly fixed to the edge 49 of the heating plate 33. The other support 55 is electrically connected to the free end 39 of at least one other of the branches 37 and at the second terminal 45 of the electrical supply 21.
    The other support 55 is rigidly fixed to the edge 49 of the heating plate 33 along one or more continuous areas, extending in total over at least 10% of a perimeter of the heating plate 33. As a variant, the other support 55 extends in total over at least 20%, or even at least 30%, of a perimeter of the heating plate 33.
    The other support 55 is typically fixed to the other half of the branches 37, that is to say to the branches not electrically connected to the support 47. Thus, when the heating plate 33 has only two branches 37, the other support 55 is fixed to a single branch 37, preferably along a continuous range. When the heating plate 33 has four branches 37, the other support 55 is fixed to two branches 37 (Figure 3). It is fixed to each branch 37 preferably along a continuous range, the two continuous areas being separated by a gap.
    Considered in section perpendicular to the central axis C, the other support 55 is interposed between the heating plate 33 and the tubular casing 15.
    In the alternative embodiment of Figure 3, the other support 55 is rigidly fixed to the tubular casing 15 by electrically insulating fasteners, not shown in the figures.
    Another connector 57 passes through the tubular casing 15 through another orifice of this tubular casing 15. A ring 58 electrically isolates the other connector 57 from the tubular casing 15. The other connector 57 ensures the electrical connection of the other support 55 at the second terminal 45 of the power supply 21.
    In the alternative embodiment of FIG. 2, the other support 55 is rigidly fixed to the tubular casing 15 by electrically conductive fasteners 59. The tubular casing 15 is for example connected to the electrical ground, and constitutes the second terminal 45 of the electrical supply 21. As a variant, the tubular casing 15 is electrically connected to the second terminal 45 of the electrical supply 21.
    In the alternative embodiment of FIG. 11, the power supply 21 comprises an electrically conductive arm 61, directly electrically connected to the solid center 35 of the heating plate 33 or to a point on the heating plate 33 located near the solid center 35 The electrically conductive arm 61 is also electrically connected to one of the first terminal 43 or of the second terminal 45 of the electrical supply 21. The heating plate 33 is electrically connected to the other of the first terminal 43 or of the second terminal 45, by the support 47 or the other support 55.
    In the example shown in FIG. 11, the electrically conductive arm 61 comprises an iron bent in a U, the ends of which are rigidly fixed to a connection plate 63, directly connected to a point on the heating plate 33. This point is located preferably equidistant from the free ends 39 of the branches 37, following said branches 37.
    With reference to FIG. 3, the support 47 and the other support 55 advantageously carry out strapping of the heating plate 33. They hold the branches 37 in position. They stiffen the heating plate 33.
    This contributes to enabling the heating plate 33 to be fixed only to the tubular casing 15. This fixing is typically carried out exclusively by the support 47 and the other support 55, or by one of the support 47 or the other support 55 plus the electrically conductive arm 61.
    The heating member 19 is not directly attached to the purification member 17.
    Furthermore, there remains an air space around the heating plate 33, between the heating plate 33 and the tubular casing 15. This contributes to limiting the heat losses towards the outside of the tubular casing 15 and to protect the surrounding mechanical organs.
    The shape of the heating plate 33 can be modified as required, in particular to create preferential heating zones: more pronounced heating in the center, at the periphery, etc.
    For example, according to an alternative embodiment illustrated in FIG. 8, the branches 37 are not of constant width. Each branch 37 is for example wider at its opposite ends, and narrower in its central part.
    According to another alternative embodiment illustrated in FIG. 9, the branches 37 are not of constant width. Each branch 37 is delimited by edges having protruding or recessed reliefs, which fit into the reliefs of the neighboring branches.
    The heating plate 33 typically has a circular shape, taken perpendicular to the central axis C. In the variant of FIG. 10, the heating plate 33 has an oval shape. As a variant, the heating plate 33 has any other suitable shape.
    The invention also relates to a method for manufacturing the purification device 1 described above. This manufacturing process comprises the following stages: - obtaining a plate in said metallic material;
    - cutting the plate to form the heating plate 33.
    The manufacturing process preferably also includes the following steps:
    - assembly of the heating member 19;
    - mounting the purification member 17 and the heating member 19 in the tubular casing 15;
    - electrical connection of the heating element 19 to the electrical supply 21.
    The step of assembling the heating member 19 is carried out by fixing the support and the other support 55 to the heating plate 33. As a variant, the step of assembling the heating member 19 is carried out by fixing the electrically conductive arm 61, and the support 47 or I other support 55, to the heating plate 33. The attachments are made by any suitable means: bonding, welding, etc.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1Exhaust gas purification device of a vehicle, the purification device (1) comprising a tubular casing (15) having a central axis (C), an exhaust gas purification member (17) housed in the tubular casing (15), an electric heating member (19) housed in the tubular casing (15) and an electrical supply (21) electrically supplying the heating member (19), the heating member (19) comprising a heating plate (33) of an electrically conductive material extending in a plane substantially perpendicular to the central axis (C), the heating plate (33) having a solid center (35) and at least two branches (37) , each branch (37) extending in a spiral from the solid center (35) to a free end (39) located near the tubular casing (15), the heating plate (33) being permeable to gases d exhaust and comprising a network of passages for gas exhaust generating a turbulent flow of exhaust gases through the heating plate (33).
    [2" id="c-fr-0002]
    2, - Device according to claim 1, wherein the heating plate (33) comprises at least three branches (37) each extending in a spiral from the solid center (35) to a free end (39) located at near the tubular casing (15).
    [3" id="c-fr-0003]
    3, - Device according to claim 1 or 2, wherein the heating plate (33) is made of material.
    [4" id="c-fr-0004]
    4, - Device according to any one of the preceding claims, wherein the heating plate 33 is a foam.
    [5" id="c-fr-0005]
    5, - Device according to any one of the preceding claims, wherein the heating plate (33) has a thickness between 2 and 50 mm.
    [6" id="c-fr-0006]
    6, - Device according to any one of the preceding claims, wherein the heating plate (33) comprises exactly two branches (37), each branch (37) winding at least 360 ° around the solid center (35).
    [7" id="c-fr-0007]
    7, - Device according to one of claims 1 to 5, wherein the heating plate (33) comprises exactly four branches (37), each branch (37) winding at least 180 ° around the solid center (35) .
    [8" id="c-fr-0008]
    8, - Device according to any one of the preceding claims, in which the heating plate (33) is coated with at least one coating with catalytic function making it possible to contribute to the post-treatment of the exhaust gases.
    [9" id="c-fr-0009]
    9. - A method of manufacturing the purification device (1) of any one of the preceding claims, the manufacturing method comprising the following steps.
    - obtaining a plate in said metallic material;
    - cutting the plate to form the heating plate (33).
    [10" id="c-fr-0010]
    10. - Vehicle exhaust line, comprising a purification device (1) according to any one of claims 1 to 8.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3080148B1|2020-03-20|
    US20190316507A1|2019-10-17|
    DE112019001864T5|2020-12-31|
    US10808587B2|2020-10-20|
    WO2019197578A1|2019-10-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH09317440A|1996-05-24|1997-12-09|Nippon Soken Inc|Exhaust particulate purifier for internal combustion engine|
    WO2004112433A1|2003-06-12|2004-12-23|Il Jin Electric Co., Ltd|Electric heating module manufacturing process using a jig and the electric heating module|WO2021198659A1|2020-03-31|2021-10-07|Johnson Matthey Public Limited Company|Exhaust gas joule heater|DE102007010758A1|2007-03-06|2008-09-11|Emitec Gesellschaft Für Emissionstechnologie Mbh|Electrically heatable honeycomb body and method for its operation|FR3096075A1|2019-05-17|2020-11-20|Faurecia Systemes D'echappement|Device for purifying vehicle exhaust gases, manufacturing process, corresponding exhaust line and vehicle|
    FR3103517B1|2019-11-22|2021-10-29|Faurecia Systemes Dechappement|Exhaust gas heater with metal foam heating element|
    FR3108678A1|2020-03-31|2021-10-01|Faurecia Systemes D'echappement|Heater for an exhaust gas purification device|
    EP3958650A1|2020-08-19|2022-02-23|Johnson Matthey Public Limited Company|Electrical heating unit for exhaust gas system and method for its manufacture|
    法律状态:
    2019-04-25| PLFP| Fee payment|Year of fee payment: 2 |
    2019-10-18| PLSC| Publication of the preliminary search report|Effective date: 20191018 |
    2020-04-27| PLFP| Fee payment|Year of fee payment: 3 |
    2021-03-24| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1853167|2018-04-11|
    FR1853167A|FR3080148B1|2018-04-11|2018-04-11|EXHAUST LINE, EXHAUST PURIFICATION DEVICE, AND METHOD FOR MANUFACTURING THE PURIFICATION DEVICE|FR1853167A| FR3080148B1|2018-04-11|2018-04-11|EXHAUST LINE, EXHAUST PURIFICATION DEVICE, AND METHOD FOR MANUFACTURING THE PURIFICATION DEVICE|
    US16/299,452| US10808587B2|2018-04-11|2019-03-12|Exhaust line, exhaust gas purification device, and purification device manufacturing process|
    PCT/EP2019/059348| WO2019197578A1|2018-04-11|2019-04-11|Exhaust line, device for purifying exhaust gases, and method for manufacturing the purifying device|
    DE112019001864.7T| DE112019001864T5|2018-04-11|2019-04-11|Exhaust pipe, device for exhaust gas cleaning and method for producing the cleaning device|
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