• 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 a mixing device (1) for an exhaust gas aftertreatment device of an internal combustion engine, in particular for carrying out a selective catalytic reduction in an exhaust gas flow (S), with a - preferably cylindrical - mixing tube (2) having a diameter (D) corresponding to its maximum radial extent. in which at least one first and at least one second deflecting element (4, 5) are arranged, which deflecting elements (4, 5) projecting from an inner wall (3) of the mixing tube (2) and are formed either directly above one another or spaced apart from one another. In order to enable a low-loss, rapid and as complete as possible mixing of the exhaust gas with an additive in a simple and space-saving manner, it is provided that the two deflection elements (4, 5) are shaped differently and - in a projection in the direction of the fluid axis (1 a) Considered mixed tube (1) - in different sectors (8, 9) - preferably in different tube halves of the mixing tube (1) - are arranged, wherein - with respect to the fluid axis (1a) - the first sector (8) diametrically to the second sector (9) is trained.
    公开号:AT517917A1
    申请号:T50912/2015
    申请日:2015-10-28
    公开日:2017-05-15
    发明作者:
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a mixing device for a
    Exhaust gas aftertreatment device of an internal combustion engine, in particular for carrying out a selective catalytic reduction in an exhaust gas flow, with a - preferably cylindrical - mixing tube having a diameter corresponding to its maximum radial extent, in which at least a first and at least a second deflection element are arranged, which deflecting elements from an inner wall of Mixing tube protruding and either directly above each other or spaced from each other. Furthermore, the invention relates to an exhaust aftertreatment device having this mixing device.
    DE 100 60 808 A1 describes an exhaust gas purification system of an internal combustion engine for the aftertreatment of exhaust gases by means of catalytic reduction of nitrogen oxides, in which a metering device for supplying an auxiliary agent for after-treatment of the exhaust gas is arranged downstream of an exhaust gas mixer. The mixing device has a diaphragm arrangement with a large number of guide vanes. The disadvantage is that relatively high flow losses occur.
    From DE 10 2012 002 776 A1, an exhaust gas mixing element placed between an exhaust manifold and a catalytic converter is known, which has a pipeline and a first mixer which is designed such that it brings about a first turbulence of the exhaust gas in a first rotational direction. Furthermore, the mixing element has an injector arranged downstream of the first mixer for injecting a diesel emission fluid flow into the exhaust gas flow. Downstream of the injector, a second mixer is positioned. Further, downstream of the second mixer there is disposed a third mixer adapted to induce a second swirl of the exhaust stream and the diesel emission fluid mixture in a second direction of rotation opposite the first direction of rotation. Also, this mixing element is very lossy, very complex and requires a lot of space.
    Another mixing device for mixing a gas with an additive is known from EP 2 111 916 A1. The mixing device has a channel, in which gas is guided between an inlet and an outlet. Within the channel, a mixing chamber is formed. For feeding a
    Additive opens a feeder in the channel. Immediately downstream of the supply means for mixing the gas with the additive, a mixing plate is arranged, which has a projecting into the gas flow flexible tongue whose thickness is dimensioned so that it generates a sound-damping resonance vibration.
    The object of the invention is to avoid the disadvantages mentioned and to enable a low-loss, rapid and as complete as possible mixing of the exhaust gas with an additive in a simple and space-saving manner.
    According to the invention this is achieved in that the two baffles are shaped differently and - viewed in a projection in the direction of the fluid axis of the mixing tube - in different sectors, preferably in different tube halves of the mixing tube - are arranged, wherein - with respect to the fluid axis - the first sector diametrically is formed to the second sector.
    Advantageously, the first deflecting element - viewed in a projection in the direction of the fluid axis of the mixing tube - within the inner wall of the mixing tube on an intersecting with the inner wall peripheral line, which has the shape of a circular arc. The first center of the first deflecting element is located at a smaller distance to the inner wall than to the fluid axis. The distance of the first center of the projected circular arc of the inner wall is conveniently at most a quarter of the diameter of the mixing tube. A good turbulence of the exhaust gas flow can be achieved if the circular arc of the circumferential line has a radius which corresponds at most to the smallest distance between the fluid axis and inner wall of the mixing tube, wherein preferably the radius of the circular arc is at least a quarter and a maximum of half the diameter of the mixing tube.
    Also viewed in a projection in the direction of the fluid axis of the mixing tube, in an advantageous embodiment of the invention, the second deflecting substantially in the form of a circular ring sector, wherein the circular ring sector by an angle of at least 90 °, preferably about 180 °, extends. This enables effective flow deflection of the flow striking the second deflecting element. The center of the circular ring sector is preferably in the region - in particular on - the fluid axis of the mixing device.
    To achieve optimal mixing with low flow losses, it is completely sufficient if the circular ring sector - viewed in a projection in the direction of the fluid axis of the mixing tube - has a circular ring thickness which corresponds to a maximum of one quarter of the diameter of the mixing tube.
    A very effective and compactly constructed mixing device can be achieved if the first center point and / or the second center point are arranged in a longitudinal plane including the fluid axis, preferably a longitudinal symmetry plane of the mixing device. It is provided in a preferred embodiment of the invention that the first deflecting element and the second deflecting element are formed symmetrically with respect to the longitudinal plane.
    A simple and cost-effective production results when the first and / or the second deflection element is formed by a thin-walled baffle. The first and second deflecting element can be welded to the inner wall of the guide tube or inserted through corresponding openings in the guide tube from the outside.
    A high intensity of the mixture of the additive with the gas stream with extremely low production costs can be achieved if the first and / or the second deflecting element is bent, wherein in each case between a first and a second deflection of the first deflecting element and second deflecting a first or ., second bending edge is formed. The first and / or second bending edge closes with a normal plane on the fluid axis best an angle between -45 ° and + 45 °, preferably 0 °, whereby the bending edge of the gas flow is directed opposite.
    Numerous experiments have shown that the best mixing results can be achieved with the lowest flow losses when the first deflecting element is curved convexly against the flow direction, and the second deflecting element is formed concavely against the flow direction or kinked.
    The first bending edge may be formed parallel to the second bending edge, wherein preferably the first and the second bending edge span a plane containing the fluid axis, which particularly preferably coincides with the first longitudinal plane. This symmetrical arrangement makes it possible to achieve a high degree of mixing with minimum installation space and few parts.
    Preferably, the first and the second bending edge - viewed in the flow direction - a distance d from each other, wherein conveniently the second bending edge is disposed downstream of the first bending edge. The distance may conveniently be greater than the diameter of the mixing tube.
    In a particularly preferred embodiment variant of the invention, provision is made for a metering device for supplying an additive to be arranged in the exhaust gas flow downstream of the first and / or second deflecting element with respect to the exhaust gas flow. The additive is thus introduced into the already high turbulence having exhaust gas flow. Advantageously, the metering device is spaced from the second deflecting element, wherein, for example, a first distance between a second normal plane containing the second bending edge on the fluid axis and the mouth between a quarter and a half of the diameter of the mixing tube. Furthermore, it is advantageous if the mouth is spaced from the inner wall of the mixing tube, wherein preferably a second distance between the inner wall and the mouth is at least a quarter and a maximum of half the diameter of the mixing tube. This can be effectively avoided that the additive attaches to the deflecting elements or the inner wall of the mixing tube.
    Instead of an additive, the mixing device can also be used for the mixture of gases (exhaust gas and fresh air).
    A high mixing rate can be achieved if, viewed in a projection in the direction of the fluid axis of the mixing device, the mouth and the second deflection element are arranged in the same sector. In this case, the orifice is preferably arranged in a plane containing the fluid axis, for example in the first longitudinal plane.
    The invention is explained in more detail below with reference to the non-limiting figures.
    In it show schematically
    1 shows a mixing device according to the invention in a first embodiment in an oblique view,
    2 shows the mixing device from FIG. 1 in an elevation, FIG.
    Fig. 3 shows the mixing device of Fig. 1 in a plan view
    4 shows the mixing device in a side elevation
    5 shows a mixing device according to the invention in a second embodiment in an oblique view,
    Fig. 6 shows the mixing device of FIG. 5 in an elevation and
    Fig. 7, the mixing device of Fig. 5 in a plan view.
    In the figures, the overview because of the mixing tube of the mixing device is shown transparent.
    In the embodiment variants functionally identical parts are provided with the same reference numerals.
    The mixing device 1 shown in FIGS
    Exhaust gas aftertreatment device of an internal combustion engine for carrying out a selective catalytic reduction of the exhaust gas in an exhaust gas stream has a mixing tube 2, whose inner wall is designated by reference numeral 3. Within the mixing tube 2, a first deflecting element 4 and a second deflecting element 5 are arranged, wherein the differently shaped and spaced-apart deflecting elements 4, 5 fixedly connected to the inner wall 3 of the mixing tube 2, for example, are welded. The two deflecting elements 4, 5 are formed by thin-walled baffles and can be designed to be bent in each case around a first bending edge 6 and second bending edge 7. In the exemplary embodiment, the first bending edge 6 and the second bending edge 7 are arranged on the fluid axis 1 a of the mixing device 1 in a first normal plane Ei or a second normal plane ε 2. The bending edges 6, 7 are arranged parallel to each other in the embodiment and clamp a first longitudinal center plane γ, which forms a plane of symmetry of the mixing device 1. Normal to this first longitudinal median plane γ is formed a second longitudinal median plane δ including the fluid axis la.
    The first deflection element 4 is thus formed kinked, wherein the bending edge 6, for example, normal to the direction of the exhaust stream S extends. The first deflector 4 has a first deflector portion 4a and a second deflector portion 4b which are inclined to each other. The angle α of the first deflecting element 4 between the first deflecting element section 4a and the second deflecting element section 4b can be between 45 ° and 120 °, in the illustrated exemplary embodiments 90 ° are implemented. The projected area of the first deflection element 4 advantageously remains the same - the first deflection element 4 must therefore be dimensioned correspondingly wider. The length of the first deflection element sections 4a and second deflection element sections 4b of the first deflection element 4, which is considered in the plan view shown in FIGS. 3 and 7, is designated by reference symbol I.
    Also, the second deflecting element 5 is formed kinked, wherein the bending edge 7, for example, normal to the direction of the exhaust stream S extends. The second deflector 5 has a first deflector portion 5a and a second deflector portion 5b which are inclined to each other. The angle .beta. Of the second deflecting element 5 between the first deflecting element section 5a and the second deflecting element section 5b can be between 45.degree. And 120.degree. And is 90.degree. In the exemplary embodiments shown. When viewed in plan, the length L of the first deflecting element sections 5a and second deflecting element sections 5b of the first deflecting element 5 is greater than the length I of the first deflecting element sections 4a and second deflecting element sections 4b of the first deflecting element 4.
    As a result, the flow losses can be advantageously influenced while the deflection of the exhaust gas mass flow in the direction of the inner walls 3 is best possible.
    Measured in the axial direction, the two normal planes Ei and s2 have a distance d from each other which is greater than the diameter D corresponding to the maximum radial extent of the mixing tube 2, as shown in FIGS. 2 and 3. The deflection elements 4, 5 are in the illustrated embodiment -in the apparent in Fig. 4 projection in the direction of the fluid axis la of the mixing tube 2 viewed - diametrically opposite in different sectors 8, 9 disposed on the inner wall 3 of the mixing tube 2 of the exhaust line. The sectors 8, 9 - for example, different tube halves of the mixing tube 2 - are separated in the embodiment by the second longitudinal center plane δ.
    The first deflecting element 4 thus reaches a maximum of half of the cross section of the mixing tube 2 - the higher the first deflecting element 4 protrudes into the cross section of the mixing tube 2, the better would be the downstream mixture or turbulence of the deflected streams with the main mass flow would be disadvantageous but affect larger flow losses, which can cause higher fuel consumption.
    In principle, the first deflecting element 4 can be embodied as a planar guide plate arranged normal to the direction of flow. As forms are in addition to a rectangle and a semicircle, polygons or other shaped cross-sections possible.
    In the embodiment variants shown in the figures, in each case the first deflection element 4 -as viewed in a projection in the direction of the fluid axis 1 a of the mixing tube 2 -within the inner wall 3 of the mixing tube 2 has a circumference line intersecting the inner wall 3, which forms the shape of a circular arc Has. The circular arc kl of the circumferential line has a first center Ml, which has a smaller distance e from the inner wall 3 than from the fluid axis la. For example, the first center Ml of the circular arc kl of the inner wall 3 at a distance e, which is at most a quarter of the diameter D of the mixing tube 2. The circular arc kl the circumferential line can have a radius r, which is at least a quarter and a maximum of half the diameter D of the mixing tube 2.
    In the variants illustrated in the figures, the first deflecting element 4 is designed in each case convexly counter to the direction of the exhaust gas flow S and the first bending edge 6 of the exhaust gas flow S is directed in opposite directions - thus the flow losses can be further reduced. The inclination of the first bending edge 6 with respect to the first normal plane Ei is between 0 ° and 45 °. It is relevant that the projected area of the first deflection element 4 remains the same. In this case, the projected area means that the area of the first deflecting element 4 projected onto a normal plane arranged in the flow direction 4 after the first deflecting element 4 remains the same - in the case of the not shown inclined arrangement with an angle> 0 ° of the bending edge 6 of the first deflecting element 4 to the first Normal plane Zi means that its length, ie the extension in the direction of the exhaust pipe center, increases.
    Viewed in a projection in the direction of the fluid axis la, the second deflecting element 5 essentially has the shape of a circular ring sector ks, which extends at an angle p of at least 90 °, preferably approximately 180 ° (FIG. 4). The circular ring sector ks has a second center M2, which is arranged on the fluid axis la of the mixing device 1.
    The thickness h of the circular ring sector kr is at most a quarter of the diameter D of the mixing tube 2.
    The first center M 1 and the second center M 2 are arranged in a first longitudinal center plane γ containing the fluid axis 1 a, which corresponds to the longitudinal symmetry plane of the mixing device 1. The first deflecting element 4 and the second deflecting element 5 are formed symmetrically with respect to this first longitudinal median plane γ.
    The inner edge k2 of the first deflecting element 4 downstream second deflecting element 2 is carried out continuously at the same distance from the inner surface 30 of the exhaust pipe 3. In the illustrated variant, the second deflecting element 2 covers approximately 180 ° of the inner circumference of the exhaust pipe 3. Basically, less or more coverage is possible here.
    As mentioned, in the exemplary embodiment shown, the second deflecting element 5 is likewise designed kinked and accordingly has a third 5a and fourth deflecting element section 5b, wherein the shape is embodied in a plan view shown in FIG. 3 or, viewed from above, in the same direction as the bent first deflecting element 4 , The second bending edge 7 is also arranged normal to the direction of the exhaust stream S. In an advantageous variant of the invention, the first deflecting element 4 and second deflecting element 5 form an open rhombus in plan ("open" here means that the rhombic sides do not touch, but the imaginary extension of the deflecting element sections 4a, 4b; 5a, 5b results in a rhombus ).
    This embodiment has the effect that the deflected by the first deflector 4 from the exhaust gas mass flow in the tangential direction against the inner wall 3 of the mixing tube 2 partial flows T through the second deflector 5 and the Ablenkelementabschnitte 5a, 5b merged in the direction of the bending edge 7 and from there be swirled out, so that downstream of the baffles 4, 5 results in a turbulence of the partial flows T and the hitherto unaffected exhaust gas mass flow. Here can then be sprayed with an injector, a reducing agent.
    In the first embodiment of the invention shown in FIGS. 1 to 3, the first deflecting element 4 and the second deflecting element 5 - viewed in the direction of the exhaust stream S - one after the other, so spaced from each other, arranged in the mixing tube 2. In the first exemplary embodiment, the distance d between the front edge (that is to say the side facing the flow) and the first bending edge 6 of the first deflecting element 4 to the rear side facing away from the second bending edge 7 of the second deflecting element 5 is approximately 0.6 meters with a diameter D of the mixing tube 2 by 0.5 meters.
    In the second exemplary embodiment shown in FIGS. 5 to 6, the first deflecting element 4 and the second deflecting element 5 are arranged one above the other - ie in a same axial section of the mixing tube 2, but diametrically opposite one another with respect to the fluid axis la. In this case, the ends 5a ', 5b' of the second deflecting element 5 facing the flow are arranged on the fluid axis 1a in the region of the first normal plane ει which contains the first bending edge 6. In the plan view illustrated in FIG. 7, the deflecting element sections 5a, 5b of the second deflecting element 5 intersect with the first deflecting element 4 in the region of the ends 4a ', 4b' of the deflecting element sections 4a, 4b of the first deflecting element 4.
    The arrangement of the mouth 10 (eg nozzles) of a metering device 11 (eg injector with full cone or half cone) for supplying an additive, for example a reducing agent is ideally carried out on the Staustromlinie at a first distance N downstream of the second deflecting element 5, wherein the first distance N between the second bending edge 7 and the mouth 10 may be for example between a quarter and a half of the diameter D of the mixing tube 2. The stowage streamline is that downstream line which begins at the stagnation point of the deflector 5. For the distance d + N of the mouth 10 of the metering device 9 from the first normal plane £ i applies in a particularly advantageous embodiment:
    where N is a first distance between a second normal plane Zi containing the second bending edge 5 on the fluid axis la and the mouth 10 of the metering device 9, d - viewed in the flow direction - a distance between the first crease edge 6 and the second crease edge 7 and D is the diameter of the Mixing tube 2 is.
    Although positioning of the orifice 10 between the first deflecting element 4 and the second deflecting element 5 is possible in principle, it is extremely disadvantageous: here too, it would either lead to deposits of the reducing agent on the deflecting element 4, 5 or to entrainment of the reducing agent by the undeflected exhaust gas flow come.
    With the mixing device 1 according to the invention described, the axial mass flow of the exhaust stream S in the exhaust line can be at least partially deflected into tangential flows T, whereby the mixing of reducing agent in the exhaust stream can be improved with extremely little effort and space.
    权利要求:
    Claims (24)
    [1]
    1. mixing device (1) for an exhaust gas aftertreatment device of an internal combustion engine, in particular for carrying out a selective catalytic reduction in an exhaust gas stream (S), with a - preferably cylindrical - mixing tube (2) having a maximum radial extent corresponding diameter (D), in which at least one first and at least one second deflecting element (4, 5) are arranged, which deflection elements (4, 5) from an inner wall (3) of the mixing tube (2) projecting, and directly above each other and / or spaced from each other, characterized the two deflecting elements (4, 5) are shaped differently and - viewed in a projection in the direction of the fluid axis (la) of the mixing tube (1) - in different sectors (8, 9) - preferably in different tube halves of the mixing tube (1). are arranged, wherein - with respect to the fluid axis (la) - the first sector (8) diametrically to the second sector (9) is formed.
    [2]
    2. mixing device (1) according to claim 1, characterized in that - viewed in a projection in the direction of the fluid axis (la) of the mixing device (1) - the first deflecting element (4) within the inner wall (3) of the mixing tube (2) a having with the inner wall (3) intersecting circumferential line, which has the shape of a circular arc (kl).
    [3]
    3. mixing device (1) according to claim 2, characterized in that a circular arc (kl) of the circumferential line has a first center (Ml) which from the inner wall (3) has a smaller distance than from the fluid axis (la), wherein preferably - viewed in a projection in the direction of the fluid axis (la) of the mixing device (1)) - the first center (Ml) of the circular arc (kl) of the inner wall (3) has a distance (e) which is at most a quarter of the diameter (D) of the mixing tube (2) is.
    [4]
    4. mixing device (1) according to claim 2 or 3, characterized in that - viewed in a projection in the direction of the fluid axis (la) of the mixing device (1) - the circular arc (kl) of the circumferential line has a radius (r), which maximum corresponds to half the diameter (D) of the mixing tube (2), wherein preferably the radius (r) of the circular arc (kl) is at least a quarter of the diameter (D) of the mixing tube (2).
    [5]
    5. mixing device (1) according to one of claims 1 to 4, characterized in that - viewed in a projection in the direction of the fluid axis (la) of the mixing device (1) - the second deflecting element (5) substantially the shape of a circular ring sector (ks ), wherein the circular ring sector (ks) by an angle (p) of at least 90 °, preferably 180 °, extends.
    [6]
    6. mixing device (1) according to claim 5, characterized in that the circular ring sector (ks) has a second center (M2) which on the fluid axis (la) of the mixing device (1) is arranged.
    [7]
    7. mixing device (1) according to one of claims 1 to 6, characterized in that the first center (Ml) and / or the second center (M2) in a fluid axis (la) containing the first longitudinal plane (γ), preferably a longitudinal plane of symmetry the mixing device (1) are arranged.
    [8]
    8. mixing device (1) according to claim 7, characterized in that the first deflection element (4) and the second deflection element (5) are formed symmetrically with respect to the first longitudinal center plane (y).
    [9]
    9. mixing device (1) according to one of claims 1 to 8, characterized in that the first deflection element (4) is formed kinked, wherein between a first and a second deflection region (4a, 4b) of the first deflection element (4) has a first bending edge (6) is formed.
    [10]
    10. mixing device (1) according to claim 9, characterized in that the first deflecting element (4) is formed convexly against the direction of the exhaust stream (S) curved or kinked.
    [11]
    11. mixing device (1) according to claim 9 or 10, characterized in that the bending edge (6) between the first deflection region (4a) and the second deflection region (4b) with a normal plane (εΟ on the fluid axis (la) an angle between - 45 ° and + 45 °, preferably 0 °.
    [12]
    12. mixing device (1) according to one of claims 9 to 10, characterized in that the first deflector (4) of the first deflection region (4a) with the second deflection region (4b) an angle (a) between 45 ° and 120 °, preferably 90 °, enclosing the bending edge (6)
    [13]
    13. mixing device (1) according to one of claims 1 to 12, characterized in that the second deflecting element (5) is formed kinked, wherein between a first and a second deflection region (5a, 5b) of the second deflecting element (5) has a second bending edge (7) is formed.
    [14]
    14. Mixing device (1) according to claim 13, characterized in that the second deflecting element (5) is formed concave or bent in a concave manner opposite to the direction of the exhaust gas flow (S).
    [15]
    15. mixing device (1) according to claim 13 or 14, characterized in that the bending edge (7) between the first deflection region (5a) and the second deflection region (5b) with a normal plane (ε2) on the fluid axis (la) an angle between -45 ° and + 45 °, preferably 0 °.
    [16]
    16. mixing device (1) according to any one of claims 13 to 15, characterized in that the second deflecting element (5) of the first deflection region (5a) with the second deflection region (5b) an angle (ß) between 45 ° and 120 °, preferably 90 °, around the bending edge (7) encloses
    [17]
    17. Mixing device (1) according to one of claims 9 to 16, characterized in that the first bending edge (6) is formed parallel to the second bending edge (7), wherein preferably the first bending edge (6) and the second bending edge (7) span the fluid axis (la) containing plane, which particularly preferably coincides with the first longitudinal plane (γ).
    [18]
    18. mixing device (1) according to claim 17, characterized in that the first bending edge (6) and the second bending edge (7) - viewed in the flow direction - a distance (d) from each other, wherein preferably the second bending edge (7) downstream of the first bending edge (6) is arranged.
    [19]
    19. Mixing device (1) according to one of claims 1 to 18, characterized in that - with respect to the exhaust gas stream (S) - downstream of the second deflecting element (5) a metering device (11) for supplying an additive into the exhaust gas stream (S) opens.
    [20]
    20. Mixing device (1) according to claim 19, characterized in that at least one orifice (10) of the metering device (11) in the region of a Staustromlinie the exhaust stream (S) is arranged.
    [21]
    21. Mixing device (1) according to claim 19 or 20, characterized in that at least one mouth (10) of the metering device (11) from the second deflecting element (5) is spaced, wherein preferably applies:

    where N is a first distance between a second normal plane (ε2) containing the second bending edge (5) on the fluid axis (la) and the mouth (10) of the metering device (9), d - viewed in the flow direction - a distance between the first bending edge ( 6) and the second bending edge (7), and D is the diameter of the mixing tube (2).
    [22]
    22. Mixing device (1) according to any one of claims 19 to 21, characterized in that at least one mouth (10) of the metering device (11) from the inner wall (3) of the mixing tube (2) is spaced, preferably a second distance (n ) between the inner wall (3) and the mouth (8) is at least a quarter and at most half the diameter (D) of the mixing tube (2).
    [23]
    23. Mixing device (1) according to any one of claims 19 to 21, characterized in that at least one mouth (10) of the metering device (11) in a fluid axis (la) containing plane, preferably in the first longitudinal center plane (γ), is arranged ,
    [24]
    24. Aftertreatment device with a mixing device (1) according to one of claims 1 to 23. 2015 10 28 Fu
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4538413A|1982-11-19|1985-09-03|Nissan Motor Company, Limited|Particle removing system for an internal combustion engine|
    US20080181054A1|2007-01-29|2008-07-31|Anemos Company Ltd.|Fluid mixer|
    FR2948297A3|2009-07-21|2011-01-28|Renault Sa|Mixing device i.e. mixer, for mixing fuel injected in exhaust duct in exhaust line of internal combustion engine, has two blades placed in bent part of exhaust tube of duct to create opposing rotational movements in flow of exhaust gas|
    CN102022165A|2010-12-15|2011-04-20|杭州银轮科技有限公司|Hybrid unit of SCR system for vehicle urea|CN108499383A|2018-03-20|2018-09-07|束鑫|It is a kind of based on the industrial production of gear-rack drive liquid material mixing apparatus|
    AT520786A1|2017-12-21|2019-07-15|Avl List Gmbh|Mixing device for an exhaust aftertreatment device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50912/2015A|AT517917B1|2015-10-28|2015-10-28|MIXING DEVICE FOR AN EXHAUST TREATMENT DEVICE|ATA50912/2015A| AT517917B1|2015-10-28|2015-10-28|MIXING DEVICE FOR AN EXHAUST TREATMENT DEVICE|
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