• 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 invention relates to an exhaust gas purification device for a vehicle, in particular for a commercial vehicle, with at least one arranged in an exhaust line of the exhaust gas purification device (1) SCR catalyst (15, 17), and with one, seen in the exhaust gas flow direction, upstream of the at least an SCR catalyst (15, 17) arranged mixing and deflection device (13), by means of a einleitbares in an exhaust stream additive, insbesonde an aqueous urea solution, with the exhaust gas flow is miscible, and by means of the exhaust stream is deflected, in particular approximately can be deflected by 180 °. According to the invention, the mixing and deflecting device (13) has a substantially U-shaped pipe bend element (27), by means of which an exhaust line part (23) arranged upstream of the mixing and deflecting device (13) and downstream of the mixing and deflecting device (13) angeord neter exhaust line section (25) are fluidically connectable.
    公开号:AT516102A1
    申请号:T633/2014
    申请日:2014-08-14
    公开日:2016-02-15
    发明作者:Hannes Dipl Ing Reitzenberger；Mihai Baldea；Michael Stögmann
    申请人:MAN Truck & Bus Österreich AG；
    IPC主号:
    专利说明:

    description
    Exhaust gas purification device for a vehicle, in particular for a commercial vehicle
    The invention relates to an exhaust gas purification device for a vehicle, in particular for a commercial vehicle, according to the preamble of claim 1 and a vehicle, in particular a utility vehicle, with the exhaust gas purification device according to claim 16.
    Modern vehicle, in particular commercial vehicles, regularly have exhaust gas purification devices with at least one so-called SCR catalytic converter. The abbreviation "SCR" stands for "Selective Catalytic Reduction" and describes a chemical process in which the nitrogen oxides in the exhaust gas are reduced by means of a reducing agent. The reducing agent used is preferably ammonia. Because the handling of pure ammonia is complicated, in vehicles usually a synthetic aqueous urea solution is used, which is mixed in an upstream of the SCR catalyst mixing device with the exhaust gas stream. By this mixing, the aqueous urea solution is heated and the aqueous urea solution reacts, in particular using a so-called hydrolysis catalyst, to ammonia. The aqueous urea solution is usually composed of 32.5% urea and 67.5% water.
    Furthermore, it is also known to arrange this mixing device in the region of a 180 ° deflection of the exhaust gas stream in the exhaust gas line. As a result, the exhaust gas line can be made compact or space-saving in a particularly simple manner. Thus, EP 2 314 837 A1 already discloses a mixing device for mixing an exhaust gas with an additive, preferably an aqueous urea solution, by means of the exhaust line part arranged upstream of the mixing device and fluidly arranged downstream of the mixing device get connected. The exhaust gas line parts and the mixing device are designed such that by means of the mixing device, the exhaust gas flow is deflected in about 180 °. Specifically, the mixing device is designed here essentially as a straight pipe element arranged perpendicularly to the two exhaust tract parts, one end region of the pipe element projecting into the exhaust line part arranged upstream of the pipe element and the other end region of the pipe element projecting into the exhaust line part arranged downstream of the pipe element. The two exhaust-gas system sections are arranged parallel to one another and, with their mutually facing outer-wall regions, are connected to one another in a manner integral with one another or integrally with one another on these outer-wall regions.
    Overall, this is a relatively complex and difficult-to-implement construction, in which although the zugedstes reducing agent is well kept away from the pipe wall, but the desired homogeneous distribution of urea solution in the exhaust stream is not achieved in the desired manner.
    The object of the invention is therefore to provide an exhaust gas purification device for a vehicle, in particular for a commercial vehicle, which is simple in terms of production and / or construction and / or with which a homogeneous mixing of exhaust gas and additive, in particular aqueous urea solution is achieved ,
    This object is solved by the features of the independent claims. Preferred developments are disclosed in the subclaims.
    The invention relates to an exhaust gas purification device for a vehicle, in particular for a commercial vehicle, comprising at least one arranged in an exhaust line of the exhaust gas purification device SCR catalyst, and with a, seen in the exhaust gas flow direction, upstream of the at least one SCR catalyst mixing and deflection, by means of an additive which can be introduced into an exhaust gas stream, in particular an aqueous urea solution, mixed with the exhaust gas stream and the exhaust gas stream can be deflected, in particular can be deflected by approximately 180 °. According to the invention, the mixing and deflecting device has a substantially U-shaped pipe bend element, by means of which an exhaust line part arranged upstream of the mixing and deflecting device and an exhaust line part arranged downstream of the mixing and deflecting device can be fluidically connected, the two exhaust line parts being substantially parallel to one another are aligned.
    By means of the U-shaped pipe elbow element, the structure of the exhaust gas purification device is significantly simplified because, for example, no recesses must be provided on the mutually facing outer wall regions of the exhaust gas train parts for connecting the exhaust gas train parts, through which a pipe element must be guided. Rather, the U-shaped pipe elbow element only has to be connected with its connection ends, for example via simple flange connections, to the end regions of the exhaust gas system parts. As a result, the production of the exhaust gas purification device is also significantly simplified. In addition, a particularly low flow resistance for the exhaust gas can be ensured by means of the U-shaped pipe elbow element.
    In a preferred embodiment of the exhaust gas purification device according to the invention, at least one U-leg of the pipe bend element may be formed as a straight and / or cylindrical pipe section. In this way, the U-leg is functionally designed in the manner of a conventional flow tube and a particularly simple production of the U-leg possible. Preferably, the cross-section of at least one U-leg at least partially extend up to a U-legs facing away from the outer wall of the U-base, that is, the U-leg geometry can be continued up to this outer wall to the manufacture of the pipe elbow element according to the invention even further simplify.
    In a preferred specific embodiment, an outer wall of the U-base facing away from the U-legs is at least partially formed as a flat surface, in particular by a flat wall or plate. As a result, the pipe elbow element or the exhaust gas purification device according to the invention can be made particularly compact without voluminous large curved tube bow regions. Such a construction is particularly advantageous because for the arrangement of emission control devices on vehicles regularly only very little space is available. Preferably, moreover, the two U-legs can be aligned perpendicular to this outer wall in order to also make the pipe-elbow element as a whole particularly compact.
    Preferably, the U-base of the pipe bend element may be formed as a block and / or box-shaped, in particular cuboid connecting element, which forms a flow channel interconnecting the two spaced apart U-legs of the pipe bend element fluidly interconnected. Such a structure is particularly easy to manufacture and allows the flat described implementation of a compact design.
    According to a further preferred embodiment, the mixing and deflecting device may comprise or be formed by a mixing tube or mixing tube element arranged inside the tube arch element, in particular within the U base of the tube arch element, wherein an exhaust inlet mouth of the mixing tube element is a first of the U legs is associated with the pipe elbow element, while an exhaust outlet orifice of the mixing tube element is associated with a second of the U-legs of the pipe elbow element. By means of such a mixing tube element, an advantageous mixing of additive and exhaust gas is achieved and therefore a particularly effective reduction of the nitrogen oxides contained in the exhaust gas is possible. For example, the Mischrohrele element in a simple manner be designed as inexpensive to produce straight and / or cylindrical pipe section.
    In such an embodiment, preferably the exhaust gas inlet opening of the mixing tube element, based on the flow direction through the flow channel, in an upper region of the flow channel within the U-base of the pipe elbow element and / or the exhaust outlet orifice of the pipe element in a contrast lower region of the flow channel within the U-base of the pipe elbow element. Overall, it is structurally simply ensured here that at least part of the exhaust gas flowing through the pipe bend element flows through the mixing pipe element and at the same time the construction and / or the production or arrangement of the mixing and deflection device is simple.
    At least in the region of an exhaust gas inlet opening of the mixing tube element, at least one flow guide element, in particular a swirl element, may be provided, by means of which the exhaust gas entering the mixing tube element can be brought into a defined flow movement, in particular into a defined swirl movement. By means of such a flow guide element, the mixing of additive and exhaust gas in the mixing tube element can be further improved. The at least one flow guide element can preferably be designed such that the exhaust gas is brought into the edge side in the region of a tube wall of the mixing tube element in a defined swirling motion. This swirling movement is preferably a helical movement in which the exhaust gas moves both in the mixing tube element circumferential direction and in the mixing tube element longitudinal direction. This prevents the additive settling on the tube wall of the mixing tube element and thus significantly improves the mixing of additive and exhaust gas. The at least one flow guide element can preferably be further configured such that a central center flow of the exhaust gas through the mixing tube element has no swirling motion, but flows substantially linearly in the mixing tube element longitudinal direction. As a result, the settling of additive to the tube wall of the mixing tube element is further reliably prevented and the mixing of additive and exhaust gas is in turn improved. The flow-guiding element can be connected, for example, in the same material and / or in one piece with the mixing tube element, for example by notching the blade-like flow-guiding elements out of the tube wall. Alternatively, however, the flow guide elements can also be formed by separate components, for example, be fixed by welding to the pipe wall.
    Preferably, the flow guide element has a plurality of exhaust guide vanes arranged in the region of the exhaust gas inlet opening of the pipe element, which are distributed on the circumference and / or are fixed at a distance to a pipe wall of the mixing pipe element. Preferably, the flow guide elements with their free end regions, viewed in the radial direction, are curved inward and / or project in a defined manner from the tube wall of the tube element. By means of such exhaust gas guide vanes, the flow guide element can be made particularly simple. In addition, by means of the exhaust guide vanes, the defined flow movement of the exhaust gas entering the mixing tube element can also be set particularly easily.
    In a further embodiment, the mixing and deflecting device can have an injection device, in particular an injection nozzle, by means of which the additive can be injected and / or introduced into an interior region of the pipe bend element through which exhaust gas flows. The attachment of the injection device to the mixing and deflection device has the advantage that the injection device is provided on the component used specifically for the mixing of exhaust gas and additive. As a result, the mixing of additive and exhaust gas can be further optimized. In addition, at the specially designed for defined tasks in the exhaust gas purification, arranged upstream and downstream of the mixing and deflection exhaust gas system parts no change to attach such an injection device must be made. Particularly preferably, the injection device can be arranged such that the injection and / or introduction of the additive takes place upstream of the mixing tube element and / or in the region of the exhaust inlet mouth of the mixing tube element.
    Preferably, the additive is injected and / or introduced directly into the interior of the mixing tube element. Preferably, the introduction of the additive can take place in the exhaust gas flow direction in order to ensure the mixing of additive and exhaust gas in the interior of the mixing tube element. More preferably, the introduction of the additive, as seen in the tube element radial direction, centrally and / or upstream of the at least one flow guide element to be carried out in order to further optimize the mixing of exhaust gas and additive.
    In a preferred embodiment, the injection device may be fixed to an outer wall of the U-base of the pipe elbow element facing away from the U-legs. Such a determination allows a particularly simple construction of the mixing and deflection device according to the invention.
    Particularly preferably, the injection device is designed and / or arranged such that a nozzle of the injection device protrudes into an exhaust gas inlet region of the mixing tube element. Thus, the additive can be injected and / or introduced into the exhaust gas flow flowing through the mixing tube element in a particularly simple manner, since, for example, no constructive measures have to be provided on the mixing tube element itself for this purpose.
    In a further embodiment, the mixing and deflecting device can have at least one homogenizing element, in particular a baffle element and / or a diaphragm. By means of such a homogenizing element, it is possible, for example, to distribute the additive particularly uniformly or homogeneously in the exhaust gas flow. In this case, the homogenizing element is preferably arranged downstream of the mixing tube element in the region of the exhaust outlet orifice of the mixing tube element in order, for example, to mix the additive-waste gas mixture leaving the mixing tube element even better with the part of the exhaust gas flow that does not flow through the mixing tube element.
    Concretely, the homogenizing element designed as a baffle element and / or as a diaphragm can be annular at least in some areas. Further preferably, the homogenizing element may be fixed to the pipe wall of the pipe elbow element in such a way that the flow cross-section is reduced by means of the same with respect to a flow region adjacent to the homogenizing element upstream and / or downstream. In this way, the homogenizing element can be used, for example, to form an exhaust gas backpressure, and thus the homogenous distribution of the additive in the exhaust gas can be realized in a particularly simple and effective manner.
    In a further concrete embodiment, the upstream exhaust tract section can have at least one particle filter and / or at least one oxidation catalyst and / or at least one mixing element, in particular a static mixer and / or a perforated plate, in order to achieve optimized and effective exhaust gas purification. The particle filter is preferably connected, for example, to a U-leg of the pipe bend element.
    The downstream exhaust tract section can have at least one SCR catalytic converter and / or at least one ammonia blocking catalytic converter in order to purify the exhaust gas optimally. Particularly preferably, the SCR catalyst is connected to a U-leg of the pipe elbow element.
    Furthermore, a vehicle, in particular a commercial vehicle, claimed with the exhaust gas purification device according to the invention. The resulting advantages are identical to the already appreciated advantages of the exhaust gas purification device according to the invention, so that they are not repeated here.
    The advantageous embodiments and / or further developments of the invention explained above and / or reproduced in the subclaims can be used individually or else in any desired combination with one another except, for example, in the case of clear dependencies and / or incompatible alternatives.
    The invention and its advantageous embodiments and / or developments and their advantages will be explained in more detail by way of example only with reference to the drawing.
    Show it:
    1 shows a schematic representation of a preferred embodiment of the exhaust gas purification device according to the invention;
    FIG. 2 is a perspective view of a mixing and deflecting device of the exhaust gas purification device; FIG.
    Fig. 3 is a plan view of the mixing and deflecting device;
    4 shows a sectional view of the sectional plane A-A from FIG. 3;
    Fig. 5 is a sectional view of the sectional plane B-B of Fig. 3; and
    6 shows an illustration of the mixing and deflecting device, with reference to which a flow movement within the mixing and deflecting device will be explained.
    In Fig. 1, an exhaust gas purification device 1 is shown schematically, by means of which, for example, the exhaust gas of a commercial vehicle, in particular a truck or a bus line, is cleaned. The exhaust gas purification device 1 has, seen in the exhaust gas flow direction, arranged one behind the other an exhaust gas inlet pipe 3, an exhaust gas mixing element 5 with a perforated plate 7 indicated by dashed lines, an oxidation catalyst 9, a particle filter 11, a mixing and deflecting device 13, a first SCR catalyst 15, a second SCR catalyst 17, an ammonia blocking catalyst 19 and an exhaust gas outlet pipe 21 on. In this case, the exhaust gas inlet pipe 3, the exhaust gas mixing element 5, the oxidation catalytic converter 9 and the particle filter 11 form an exhaust gas tract part 23 arranged upstream of the mixing and deflecting device 13, viewed in the exhaust gas flow direction. The first SCR catalytic converter 15, the second SCR catalytic converter 17, the ammonia blocking catalytic converter 19 and the exhaust gas outlet pipe 21 form an exhaust gas tract part 25 arranged downstream of the mixing and deflecting device 13, which is here spaced apart and substantially parallel to the first exhaust gas system part 23 runs. The exhaust tract parts 23 and 25 are composed here merely by way of example from the named components. Likewise, the exhaust line parts 23 and 25 can also be composed of other components and the individual components are arranged differently.
    As is apparent from Fig. 1, the exhaust gas flow is deflected by about 180 ° by means of the mixing and deflecting device 13. Such a deflection of the exhaust gas stream allows a particularly compact construction of the exhaust gas purification device 1. As shown more clearly in FIGS. 2 to 4, the mixing and deflecting device 13 has a U-shaped pipe bend element 27. The U-shaped pipe bend element 27 is composed of a first U-leg 29, a second U-leg 31 and a U-base 33. The two U-legs 29 and 31 are, here only by way of example, formed as a straight and cylindrical pipe sections and of the same material and integrally connected to the U-base 33 of the pipe elbow element 37. By way of example, the U-base 33 here has an essentially cuboidal outer contour and forms a connecting element by means of which the two spaced-apart U-legs 29 and 31 of the tubular-arc element 27 are fluidically connected to form a flow channel 35. The outer contour of the U-base 33 is here also designed such that the cross-section of the two U-legs 29 and 31 up to the flow channel 35 and to one of the two U-legs 29 and 31 facing away from the outer wall 37 of the U Base 33 extends. The outer wall 37 of the U-base 33 is here exemplified as a flat wall or plate. The two U-legs 29 and 31 are also aligned approximately perpendicular to the outer wall 37 of the U-base 33.
    As shown in FIGS. 3 and 4, the mixing and deflecting device 13 further comprises a schematically shown injection device 39, by means of which an additive, here for example an aqueous urea solution, into the interior of a mixing tube element 40 of the mixing and deflecting 13th can be initiated. The injection device 39 is here for example fixed to the outer wall 37 of the U-base 33 and thereby formed curved so that a nozzle 41 of the injection device 39 protrudes into an exhaust gas inlet region 43 of the mixing tube element 40. In addition, the injection device is arranged such that the introduction of the additive in the exhaust gas flow direction and, as seen in the mixing tube element radial direction, centrally into the mixing tube element 40 follows.
    The mixing tube element 40 is provided here specifically for an improved mixing of exhaust gas and introduced aqueous urea solution. By mixing aqueous urea solution and exhaust gas, the aqueous urea solution is heated and ammonia is formed. The ammonia formed then passes together with the exhaust gas in the two SCR catalysts 15 and 17 and reduces the nitrogen oxides contained in the exhaust gas. As is apparent from Fig. 4, the mixing tube member 40 is preferably disposed within the U-base 33 of the pipe elbow member 27, for example, by means of a welded connection on the inside of the outer wall 37 attached. Furthermore, an exhaust gas inlet opening 45 of the mixing tube element 40 is preferably assigned to the first U limb 29 of the tube bend element 27 such that it is arranged centrally with respect to the cylindrical cross section of the first U limb 29, viewed in plan view of the mixing and diverting device 13 , An exhaust gas outlet opening 47 of the mixing tube element 40 is preferably associated with the second U-leg 31 of the tubular elbow element 27 such that, seen in plan view of the mixing and deflecting device 13, it is arranged centrally with respect to the cylindrical cross section of the second U-leg 31. In the area of the flow channel 35, the mixing tube element 40 has a constriction 49 extending over a defined partial distance a along the flow channel. This constriction 49 leads to a kind Venturi effect and thus to an increase in the flow velocity in this area a. As a result, the mixing of aqueous urea solution and exhaust gas is further promoted together with the subsequent flow-calmed area. In principle, however, the mixing tube element 40 is preferably designed as a straight and cylindrical pipe section.
    As shown in FIGS. 3 and 4, particularly clearly in FIG. 5, the mixing tube element 40 optionally has a plurality of exhaust guide vanes 53 forming a flow guide element 51 at the exhaust gas inlet region thereof. The exhaust guide vanes 53 are here, for example, of the same material and integrally connected to the mixing tube element 40 and circumferentially evenly distributed or spaced at an end face 55 of the mixing tube element 40. With their free end regions, the exhaust guide vanes 53, seen in the mixing tube element radial direction, project inwardly from a tube wall 50 of the mixing tube element 40. The free end regions of the exhaust guide vanes 53 in this case have a defined curvature, viewed in the mixing tube element radial direction, inwards.
    By means of the exhaust gas guide element 51, the exhaust gas entering the mixing tube element 40 is brought into a flow movement shown schematically in FIG. In the region of the tube wall 50 of the mixing tube element 40, the exhaust gas is thereby brought into a defined swirling motion. In this swirling movement, the exhaust gas flows both in the mixing tube element circumferential direction and in the mixing tube longitudinal direction, resulting in a substantially spiraled exhaust gas movement. This prevents the introduced by means of the injection device 39 aqueous urea solution deposited on the tube wall 50 of the mixing tube element 40 and thus improves the mixing of aqueous urea solution and exhaust gas. As seen in the mixing tube element radial direction further inward, a central center flow of the exhaust gas surrounded by the edge-side swirl flow has no swirling motion, but the exhaust gas moves essentially linearly in the mixing tube element longitudinal direction. As a result, the mixing of the aqueous and urea solution introduced centrally into the mixing tube element 40 in the direction of the exhaust gas flow is further improved.
    As is further apparent from FIGS. 3 and 4, the mixing and deflecting device 13 optionally has a homogenizing element, here by way of example an annular aperture 61, by means of which the urea-water solution is distributed homogeneously or evenly in the exhaust gas. The aperture 61 is here arranged within the second U-leg 31 of the pipe bend element 27 such that by means of this the flow cross-section of the cylindrical second U-leg 31 is significantly reduced. In addition, the diaphragm is arranged in the region of the exhaust gas outlet orifice 47 of the mixing tube element 40. Due to this arrangement, the exhaust gas mixed with aqueous urea solution and exiting from the mixing tube element 40 first impinges on the orifice 61 and is accumulated back in a storage area 63 of the tubular elbow element 27. This backflow causes an improved mixing of the exhaust gas leaving the mixing tube element 40 with the exhaust gas which has flowed outside of the mixing tube element 40 through the tube bend element 27. As a result, the urea-water solution is particularly evenly distributed in the exhaust gas. By means of the uniformly distributed in the exhaust, aqueous urea solution can then be particularly effectively reduced in the SCR catalysts 15 and 17, the nitrogen oxides of the exhaust gas.
    I exhaust gas purification device 3 exhaust gas inlet pipe 5 exhaust gas mixing element 7 perforated plate 9 oxidation catalyst II particulate filter 13 mixing and deflecting 15 first SCR catalyst 17 second SCR catalyst 19 ammonia blocking catalyst 21 exhaust gas outlet pipe 23 upstream exhaust line part 25 downstream exhaust line part 27 pipe bend element 29 first U-leg 31 second U-leg 33 U-base 35 flow channel 37 outer wall 39 injection device 40 mixing tube element 41 nozzle 43 exhaust gas inlet region 45 exhaust gas inlet opening 47 exhaust outlet opening 49 constriction 50 tube wall 51 exhaust guide element 53 exhaust guide vane 55 end face Mixing tube element 61 Aperture 63 Dust area a defined section
    权利要求:
    Claims (15)
    [1]
    1. exhaust gas purification device for a vehicle, in particular for a commercial vehicle, with at least one in an exhaust line of the exhaust gas purification device (1) arranged SCR catalyst (15, 17), and with one, seen in the exhaust gas flow direction, upstream of the at least one SCR Catalyst (15, 17) arranged mixing and deflecting device (13), by means of a einleitbares in an exhaust stream additive, in particular an aqueous urea solution, with the exhaust gas flow is mixed, and by means of the exhaust stream is deflected, in particular in about 180 ° deflected characterized in that the mixing and deflecting device (13) has a substantially U-shaped pipe bend element (27), by means of which an upstream of the mixing and deflecting device (13) arranged exhaust tract part (23) and downstream of the mixing and Deflection device (13) arranged exhaust tract part (25) are fluidically connectable.
    [2]
    2. An exhaust gas purification device according to claim 1, characterized in that at least one U-leg (29, 31) of the pipe bend element (27) is formed as a straight and / or cylindrical pipe section, and / or that the cross-section of at least one U-leg (29 , 31) extends at least partially up to a U-legs (29, 31) facing away from the outer wall (37) of the U-base (33).
    [3]
    3. An exhaust gas purification device according to claim 1 or 2, characterized in that the U-legs (29, 31) facing away from outer wall (37) of the U-base (33) is at least partially formed as a flat surface, in particular formed by a flat plate , wherein it is preferably provided that the two U-legs (29 31) are aligned perpendicular to this outer wall (37).
    [4]
    4. An exhaust gas purification device according to one of the preceding claims, characterized in that the U-base (33) of the pipe bend element (27) is designed as a block and / or box-shaped, in particular cuboidal, connecting element which has a two spaced apart U-legs ( 29, 31) of the pipe bend element (27) fluidly interconnecting flow channel (35) is formed.
    [5]
    5. An exhaust gas purification device according to one of the preceding claims, characterized in that the mixing and deflecting device (13) within the Rohrbogen- geneelements (27), in particular within the U-base (33) of the pipe bend element (27), arranged mixing tube element (40 ), wherein an exhaust inlet mouth (45) of the mixing tube element (40) is associated with a first of the U-legs (29) of the pipe bend element (27), and wherein an exhaust outlet orifice (47) of the mixing tube element a second of the U-legs (31) of the pipe bend element (27) is assigned, wherein it is preferably provided that the mixing tube element (40) is formed as a straight and / or cylindrical pipe section.
    [6]
    6. An exhaust gas purification device according to claim 5, characterized in that at least in the region of an exhaust inlet mouth (45) of the mixing tube element (40) at least one flow guide element (51), in particular a swirl element, is provided, by means of which in the mixing tube element (40 ) entering exhaust gas in a defined flow movement, in particular in a defined swirl movement, can be brought, wherein it is preferably provided that the flow-conducting element (51) of the same material and / or is integrally connected to the mixing tube element (40).
    [7]
    7. An exhaust gas purification device according to claim 6, characterized in that the flow guide element (51) has a plurality in the region of the exhaust inlet mouth (45) of the mixing tube element (40) arranged exhaust guide vanes (53) distributed circumferentially and / or spaced a tube wall (59) of the mixing tube element are fixed, in particular with their free end regions (57), seen in the radial direction, are curved inwardly and / or protrude in a defined manner from the tube wall (59) of the mixing tube element (40).
    [8]
    8. An exhaust gas purification device according to one of the preceding claims, characterized in that an injection device (39) is provided, by means of which the additive into the interior of the mixing tube element (40) injectable and / or can be introduced, in particular such that the introduction of the additive in the exhaust gas Flow direction and / or, seen in the tube element radial direction, centrally and / or downstream of the at least one flow-guiding element (51).
    [9]
    9. An exhaust gas purification device according to claim 8, characterized in that the injection device (39) on one of the U-legs (29, 31) facing away from outer wall (37) of the U-base (33) of the pipe bend element (40) is supported.
    [10]
    10. An exhaust gas purification device according to claim 8 or 9, characterized in that the injection device (39) is designed and / or arranged such that a nozzle (41) of the injection device (39) in an exhaust gas inlet region (43) of the mixing tube element (40). protrudes.
    [11]
    11. The exhaust gas purification device according to one of the preceding claims, characterized in that the mixing and deflecting device (13) has at least one homogenizing element (61), in particular a baffle element and / or a diaphragm, wherein it is preferably provided that the Homogenizing element (61) downstream of the mixing tube element (13) in the region of the exhaust outlet orifice (47) of the mixing tube element (40) is arranged.
    [12]
    12. The exhaust gas purification device according to claim 11, characterized in that the baffle element and / or as a diaphragm formed homogenizer element (61) is at least partially annular, and / or that the homogenizing element (61) on the pipe wall of the pipe bend element ( 27) is determined, that by means of this the flow cross-section with respect to an upstream and / or downstream of the homogenizing element (61) adjacent flow region is reduced.
    [13]
    13. An exhaust gas purification device according to one of the preceding claims, characterized in that the upstream exhaust tract part (23) at least one particulate filter (11) and / or at least one oxidation catalyst (9) and / or at least one mixing element (5), in particular a static mixer and / or a perforated plate (7), wherein it is preferably provided that the particle filter (11) is connected to a U-leg (29) of the pipe bend element (27).
    [14]
    14. An exhaust gas purification device according to one of the preceding claims, characterized in that the downstream arranged exhaust line part (25) at least one SCR catalyst (15, 17) and / or at least one ammonia blocking catalyst (19), wherein it is preferably provided that the SCR catalyst (15, 17) to a U-leg (31) of the pipe elbow element (27) is connected.
    [15]
    15. vehicle, in particular commercial vehicle, with an emission control device according to one of the preceding claims.
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    同族专利:
    公开号 | 公开日
    EP2985434B1|2018-10-24|
    BR102015015452A2|2016-06-28|
    RU2015130342A3|2019-02-14|
    CN105370349A|2016-03-02|
    AT516102B1|2017-09-15|
    CN105370349B|2019-06-21|
    RU2015130342A|2017-01-30|
    EP2985434A1|2016-02-17|
    RU2696664C2|2019-08-05|
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    法律状态:
    2022-01-15| PC| Change of the owner|Owner name: MAN TRUCK & BUS SE, DE Effective date: 20211123 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA633/2014A|AT516102B1|2014-08-14|2014-08-14|Exhaust gas purification device for a vehicle, in particular for a commercial vehicle|ATA633/2014A| AT516102B1|2014-08-14|2014-08-14|Exhaust gas purification device for a vehicle, in particular for a commercial vehicle|
    EP15001684.8A| EP2985434B1|2014-08-14|2015-06-06|Exhaust gas purifying apparatus for a vehicle, in particular for a commercial vehicle|
    BR102015015452A| BR102015015452A2|2014-08-14|2015-06-25|exhaust gas purification device for a vehicle and vehicle, in particular a commercial vehicle|
    RU2015130342A| RU2696664C2|2014-08-14|2015-07-22|Exhaust gas purification device for vehicle, in particular for commercial vehicle|
    CN201510494896.8A| CN105370349B|2014-08-14|2015-08-13|Waste gas purification apparatus for vehicle, particularly for commerial vehicle|
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