EP2771098A1 - Mischeranordnung zur reduktionsmittelaufbereitung - Google Patents
Mischeranordnung zur reduktionsmittelaufbereitungInfo
- Publication number
- EP2771098A1 EP2771098A1 EP12779006.1A EP12779006A EP2771098A1 EP 2771098 A1 EP2771098 A1 EP 2771098A1 EP 12779006 A EP12779006 A EP 12779006A EP 2771098 A1 EP2771098 A1 EP 2771098A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- flow
- mixer arrangement
- overflow surface
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003638 chemical reducing agent Substances 0.000 title description 12
- 239000000654 additive Substances 0.000 claims abstract description 28
- 230000000996 additive effect Effects 0.000 claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 70
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 7
- 239000004202 carbamide Substances 0.000 description 7
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
Definitions
- the invention relates to a mixer arrangement for mixing exhaust gas in an exhaust pipe with an additive, wherein the additive is added in particular to the exhaust gas and is uniformly distributed there.
- an undesirably high amount of nitrogen oxides is produced.
- the addition of the additive ammonia is suitable for its removal, as a result of which the nitrogen oxides can be reduced to nitrogen even in the case of an excess of oxygen and the hydrogen content of the ammonia combines to form water.
- the storage of the irritant gas ammonia has been found to be unsuitable.
- the storage of ammonia in the form of dissolved urea in the water however, has proven itself for mobile use.
- the urea-water solution must be prepared by hydrolysis and / or thermolysis accordingly.
- the term additive is therefore used in particular as a synonym for a (liquid or at least partially gaseous) reducing agent and / or a reducing agent precursor for performing the so-called SCR process (Selective Catalytic Reaction).
- SCR process Selective Catalytic Reaction
- the relatively large droplets of the injection jet or of the spray should not adhere to an exhaust pipe wall, because they can form chemically and mechanically stable crystals there which have a corrosive effect on the usual line material.
- a uniform distribution in the exhaust gas flow should also be achieved. This sometimes results in a very narrow control window for the injection of the urea-water solution.
- a control window for the injection of the urea-water solution.
- a device for mixing and / or evaporating a reducing agent is shown.
- a mixer or evaporator is arranged over the entire exhaust gas duct cross section, in which flow guide elements are located on orthogonal grid webs.
- the reducing agent is in this case added in the exhaust gas flow direction and abandoned in part on the guide surfaces of the flow guide.
- baffles must be formed for the reducing agent, which are transverse to the exhaust gas flow and thus cause a significant pressure drop.
- a deposition of the reducing agent is enforced, whereby there is a risk that form chemically very stable wall films, agglomerates, etc. on the mixing device.
- these unwanted chemically very stable crystals form, which can not be eliminated under practical conditions in the exhaust system.
- the mixing is achieved by the nozzle geometry or the nozzle arrangement. It is known from US 2011/0 067 385 A1 to align the nozzle opening substantially counter to the exhaust gas flow direction. This turbulence is to be generated directly, which supports the mixing of exhaust gas and reducing agent. In addition, it can be ensured for many operating states that the droplets of the reducing agent are entrained by the exhaust gas flow before deposition on the channel inner wall. The disadvantage of such an arrangement is that it must be prevented that deposits form on the nozzle opening due to exhaust particles and / or urea reactants, whereby the nozzle is added. In addition, despite the advantageous arrangement, a highly dynamic control of the injection times and / or the injection pressure is often necessary.
- the mixing of reducing agent and exhaust gas by Verwirbelungser generator or turbulence generator can be improved before or after the injection nozzle.
- the turbulence generators are often formed by flow guide plates oriented transversely to the flow direction. As a result, the backflow of the exhaust gas is significantly increased.
- Such concepts reveal z.
- the object of the present invention is based on at least partially overcoming the disadvantages known from the prior art.
- a mixer arrangement is to be specified with which the exhaust gas and an additive are sufficiently mixed together and, in the case of liquid addition of a urea-water solution, at the same time deposits of urea reactants on the mixer assembly or the exhaust pipe inside be prevented.
- the backflow due to a high flow resistance of a mixer assembly can be avoided.
- the proposed mixer arrangement should also be suitable for other additives (such as water, fuel, gases, etc.) and should therefore not be limited to use with a urea solution.
- the invention relates to a mixer arrangement for mixing an additive with an exhaust gas flow, wherein the mixer arrangement comprises at least one overflow surface, which is arranged in a mixing section of an exhaust gas line.
- the exhaust pipe has a cross section and a main flow direction of the exhaust gas flow.
- the at least one overflow surface is arranged centrally in the mixing section and aligned along the main flow direction of the exhaust gas flow. In this case, a plurality of closed recesses is provided in the overflow surface.
- the mixer assembly for mixing an additive with an exhaust gas stream is configured to add an additive, such as an additive.
- B one of the above-described reducing agent to distribute as homogeneously as possible in an exhaust gas stream.
- the exhaust pipe forms part of an exhaust system, which connects to a (mobile) internal combustion engine.
- a mixing section is formed, in which the mixing of the additive takes place with the exhaust gas flow and turbulence for the mixing of an additive with an exhaust gas flow are generated.
- This mixing section is arranged in particular upstream of an SCR catalyst or a hydrolysis catalyst.
- the cross-section of the exhaust pipe is the flow-through surface of the exhaust pipe in the region of the mixing path perpendicular to the main flow direction.
- the main flow direction the exhaust gas flow usually designates the flow direction of the exhaust gas flow considered over a larger time interval; namely the direction from the internal combustion engine to the outlet of the exhaust pipe.
- the at least one overflow surface is characterized in particular by the fact that the exhaust gas does not penetrate it, but rather essentially flows along it and / or is guided along it.
- a plurality of overflow surfaces may be arranged, wherein these are preferably aligned parallel to each other and / or parallel to the main flow direction.
- the number of overflow surfaces is advantageously kept low; Preferably, the number of overflow surfaces is less than 5, more preferably the number is at most 3, 2 or 1.
- the at least one overflow surface is arranged centrally in the mixing section.
- central is to be understood in particular as meaning that the (majority of) the overflow surface (s) is arranged centrally in the mass flow of the exhaust gas and / or the exhaust gas line, so that the mass flow is influenced as uniformly as possible by the overflow surface.
- a plurality of closed recesses is formed.
- the recesses are thus open in particular only to the exhaust side.
- the depressions preferably represent only a locally limited deformation of the overflow surface. Under no circumstances do the depressions form openings, pores and / or channels through which exhaust gas can flow, in particular not through the overflow surface.
- the depressions can form a circle segment in the form of dents in the flow direction or describe a segment of an ellipse or even form a spherical segment or a segment of an ellipsoid. But they can also be in the form of a cylinder having a substantially round lateral surface, ie also elliptical or meanformkurviger base surface formed.
- the recesses are characterized in particular by being formed from an open area in the overflow area, closed side walls and a closed bottom area.
- the recesses are characterized in particular by being formed from an open area in the overflow area, closed side walls and a closed bottom area.
- the side surfaces, the bottom surface and the rest Overflow formed flush with each other, so that no flow through the exhaust stream is possible (closed).
- the individual sections of the recess can merge smoothly into each other, as z. B. is present at a spherical segment.
- the number of depressions is chosen in particular such that they are still spaced apart from each other (in particular in the main flow direction). If the depressions have different distances from each other, it is preferred that the distance to the adjacent depression in the main flow direction is greatest. In particular, however, it should be understood that the overflow surface is formed by at least 50, in particular at least 80, depressions.
- the inflowing or entering into the mixing section exhaust gas has a pronounced flow profile, which may be laminar and / or turbulent.
- This flow profile is characterized in particular by the fact that pressure differences within the flow profile are low, in particular negligible. If this flow profile reaches a depression, the pressure drops at least locally due to the cross-sectional widening.
- An airfoil is formed of streaming threads. In the case of a laminar flow, such a current thread represents the path of a single exhaust gas molecule. In the case of a turbulent flow, the current thread represents one of the statistically averaged paths of the exhaust gas molecules along one another.
- the current filaments with a short distance to the overflow surface when they enter the cross-sectional widening, become the Follow the course of the depression. Due to the inertia remains in the inlet region of the recess a non-flowed area. This non-flowed area forms a negative pressure compared to the overflow flow. Such a vacuum area in turn attracts a portion of the stream threads, so that the one or more stream threads are deflected against the flow direction of the inflowing airfoil. The flow strands, which continue to flow in the main flow direction and reach the end of the closed depression, are returned to the main flow at an angle deviating from the flow profile.
- the transverse momentum in the turbulent flow is increased with the passage of each well in series.
- molecules (amplified) describe a transverse movement to the main flow direction and are thus distributed in the exhaust gas flow.
- This effect is intensified in particular by the fact that, in the initial region and in the end region of a depression, vortexes and vortex streets arise which are very stable against other influences of the undeflected portion of the airfoil, preferably flow laminarly.
- Such a vortex or such a vortex street thus causes a spatial continuation of transverse momentum fractions in the exhaust gas flow.
- the at least one overflow surface is formed with a one-piece plate.
- two overflow surfaces are formed with a one-piece plate. That is, the one-piece plate has on both sides of a plurality of closed recesses, along which the exhaust gas flow flows along.
- the plate is formed parallel and / or concentric with the wall of the exhaust pipe in the mixing section. Preferably, however, the plate is shaped parallel to the main mass flow or the main flow direction of the exhaust gas flow.
- the one-piece plate is in main Flow direction substantially flat. That is, the angle that must describe a directly flowing stream of thread to overflow the plate is very dull, preferably above 175 ° .
- the plate can also form an overflow surface, which forms a flow-optimal profile to avoid local pressure peaks.
- the plate may be teardrop-shaped and / or wing-shaped, the orientation corresponding to a rudder or a neutral aircraft or profile. If the mixer arrangement is formed by a plurality of overflow surfaces, the majority of the one-piece plates are advantageously arranged such that substantially no narrowing of the flow cross-section in the mixing section is caused.
- the overflow surface is free of elevations.
- no guide surfaces are formed in the overflow surface, which project into the exhaust gas flow. It follows in particular that no pressure increase and then a pressure drop is generated by the overflow at any point first. But it does not mean that the overflow must necessarily form a straight plane, but they can, for. B. have a (convex) curvature that allows the inflowing exhaust stream to follow the course of the overflow regularly without stall.
- no elevations are provided in the overflow surface, which penetrate into the flow cross section in such a way that they generate local vortices.
- the plate has a thickness which corresponds to a maximum of 1.5 times the maximum depth of the recesses.
- the plate should be at most 50% thicker than the wells.
- the maximum depth of the recesses is 2 mm [millimeters] to 8 mm. The smaller the maximum depth of the pits, the smoother the introduction of turbulence and Turbulence in the exhaust gas ström.
- the (largest) diagonal of the opening of the recess or the diameter of the recess is preferably 10 mm to 20 mm.
- the material of the plate should be chosen so that it permanently withstands the mechanical loads and the high temperature fluctuations of the highly dynamic exhaust gas flow. Due to the low back pressure that is induced by the plate, the material thickness, ie, the thickness of the plate, can be selected significantly thinner than is necessary in previously known flow control of mixing devices. Also, the material of the plates need not be chosen to be chemically resistant to urea or urea reactants because it precludes deposits from forming on the mixer assembly to such an extent as to damage the plate. In a further advantageous embodiment of the mixer arrangement described above, the sum of the thicknesses of all the plates occupies a maximum of 5% [percent] of the cross section of the exhaust pipe.
- the described mixer arrangement In contrast to previously known flow guide surfaces, which occupy a large surface portion of the cross section of the exhaust pipe by their transverse orientation to the flow direction of the exhaust gas flow, it is possible with the described mixer arrangement to occupy only a small proportion of the cross section of the exhaust pipe.
- the flow cross section in the exhaust gas line to the region of the mixing section can remain constant. This can be achieved by extending the cross-section of the exhaust pipe in the area of the mixing path by the sum of the thicknesses of all the plates, or by a little more so that the inertia of the flow profile is taken into account.
- the specified limit value for the mixer arrangement applies at every cross-section within the mixing section, ie in particular over the entire length of the overflow surface (s).
- the recesses each form an at least partially sharp edge with the overflow surface.
- an edge is formed to the overflow surface, which is not rounded hydraulically and thus can not follow the previously applied stream of the abrupt change in the course of the overflow.
- the sharpness of the edge is preferably to be matched with the extent of the opening of the recess and the density of the fluid, so that a depression in the flow states during which the additive is added could be prevented from flowing over unnoticed and thus being useless.
- a motor vehicle which has an internal combustion engine and an exhaust system connected thereto.
- the exhaust system comprises a mixer arrangement according to the description according to the invention.
- a flow resistance is generated by the depressions in the overflow surface during operation of the exhaust system, which amounts to a proportion of less than 5, preferably less than 1, of the flow resistance of the mixer arrangement.
- the flow resistance coefficient would be reduced by only 5, preferably less than 1, with respect to the overflow area without depressions. is witnessed.
- the sealed overflow surface causes virtually no mixing of the exhaust gas flow with the additive, a highly efficient mixing of the exhaust gas flow with the additive is achieved with the described mixer arrangement.
- a corresponding vehicle with an associated internal combustion engine and exhaust system can be prepared, the central overflow surfaces are used without active wells. Then a classic drive cycle (eg FTP or the like) can be performed and the mean pressure drop / flow resistance of the overflow area can be determined. This is followed by a repetition of this test, although the closed wells are active or provided. If the abovementioned limit value for the increase is not exceeded, a particularly good embodiment variant of the mixer arrangement according to the invention for the specific application is found. Should the limit be exceeded, in particular the number of depressions should be reduced (at least partially), the distance between the depressions should be increased, the edge sharpness of the depressions increased and / or the size of the depressions reduced.
- a classic drive cycle eg FTP or the like
- FIGS. show particularly preferred embodiments, to which the invention is not limited.
- the figures are schematic and designate the same components with the same reference numerals. Show it:
- 1 shows a motor vehicle with an internal combustion engine and an exhaust system. 2 an overflow surface with a depression;
- 3 shows a spherical segment-shaped depression in a plate
- 4 shows a cylindrical depression in a plate
- Fig. 5 shows an arrangement of a plurality of wells on a
- Plate. 1 shows a motor vehicle 14 with an internal combustion engine 15 and an exhaust system 16.
- the internal combustion engine 15 is preferably a diesel engine or a lean (with excess air) operated gasoline engine.
- the exhaust stream 3 in the exhaust system 16 first flows through a first exhaust gas purification element 20 and, after flowing through the mixing section 5, through a second exhaust gas purification element 21.
- an injection nozzle 19 is connected directly to the first exhaust gas purification element 20, which is an additive 2 in the exhaust stream 3 admits.
- a plate 10 is arranged, which is aligned along the main flow direction 8 of the exhaust gas stream 3. This is a preferred arrangement established in the prior art, but does not limit the scope of the invention.
- the exhaust pipe 6 in the region of the mixing section 5 has a cross section 7.
- the plate 10 of the mixer arrangement 1 is set up such that no deflection of the main flow direction 8 of the exhaust gas stream 3 takes place.
- the first exhaust gas purification element 20 is a particulate filter and / or an oxidation catalyst.
- the added additive 2 is particularly preferably a urea-water solution.
- the second exhaust gas purification element 21 includes a selective reduction catalyst (SCR catalyst).
- SCR catalyst selective reduction catalyst
- the first exhaust-gas purification element 20 it is also possible for the first exhaust-gas purification element 20 to be positioned in or following the mixing section 5.
- Fig. 2 shows an overflow surface 4 with a recess 9 in detail. The inflowing exhaust gas forms an airfoil at the overflow surface 4
- This flow profile 22 is aligned along the main flow direction 8.
- the depression 9 is cup-shaped, dellenförmig, etc. and forms with the rest of the overflow surface 4 a sharp edge 13.
- a second current thread 26 emerges with a transverse portion to the main flow direction 8 from the recess 9 again. In the course of the second current thread 26, this always retains a flow component which is aligned along the main flow direction 8.
- Fig. 3 shows another possible embodiment of a recess 9 in a plate 10 in section.
- the recess 9 forms a spherical segment with the diameter 23 and the rotation axis 24. This spherical segment forms a sharp edge 13 with the overflow surface 4.
- the recess 9 has a maximum depth 12, which in this example about two-thirds of the thickness eleventh reaches the plate 10.
- FIG. 4 also shows a variant of a depression 9 in a plate 10.
- the depression 9 is cylindrical and has a diameter
- this recess 9 forms with the overflow 4 a sharp edge 13.
- the maximum depth of the total base area of the recess 9 and is about 60% of the thickness 11 of the plate 10.
- any other Parameters are selected for a recess 9 for implementing the inventive concept, wherein the flow effect, as shown for example in FIG. 2, can be achieved and the technical complexity is minimized.
- a plate 10 is shown in plan view, in which a plurality of recesses 9 are arranged one behind the other spaced. These need not be strictly ordered with a fixed distance to each other as shown in the example in Fig. 5, but may be arbitrarily introduced into the plate 10. However, it is particularly advantageous to choose the spacing evenly and so that the effect on the flow, as it z. As shown in Fig. 2, is achieved as efficiently as possible.
- the plate 10 does not have to be formed so flat and flat, as shown in Fig. 5, but it can also other free forms and in particular flow profiles are selected with a low flow resistance coefficient. Also, the plate shape of the plate 10 can be adapted to the cross section 7 (see Fig. 1).
- the invention at least partially solves the technical problems described in connection with the prior art.
- a mixer arrangement was proposed, which allows an excellent mixing of the exhaust gas stream with an additive, in particular a dropwise added urea-water solution, without creating a high flow resistance.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011117139A DE102011117139A1 (de) | 2011-10-28 | 2011-10-28 | Mischeranordnung zur Reduktionsmittelaufbereitung |
PCT/EP2012/070478 WO2013060598A1 (de) | 2011-10-28 | 2012-10-16 | Mischeranordnung zur reduktionsmittelaufbereitung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2771098A1 true EP2771098A1 (de) | 2014-09-03 |
EP2771098B1 EP2771098B1 (de) | 2016-08-31 |
Family
ID=47088833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12779006.1A Active EP2771098B1 (de) | 2011-10-28 | 2012-10-16 | Mischeranordnung zur reduktionsmittelaufbereitung |
Country Status (8)
Country | Link |
---|---|
US (1) | US9416703B2 (de) |
EP (1) | EP2771098B1 (de) |
JP (1) | JP2014532549A (de) |
KR (1) | KR20140072176A (de) |
CN (1) | CN104066498B (de) |
DE (1) | DE102011117139A1 (de) |
RU (1) | RU2614686C2 (de) |
WO (1) | WO2013060598A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108138633A (zh) | 2015-11-02 | 2018-06-08 | 大陆汽车有限公司 | 用于将添加剂与排气流动混合的混合器组件 |
CN106880989A (zh) * | 2015-12-16 | 2017-06-23 | 重庆东宏鑫科技有限公司 | 排量可调型废气净化结构 |
EP4095361A1 (de) * | 2021-05-26 | 2022-11-30 | Volvo Truck Corporation | Steuerungsstrategieanpassung basierend auf fehlerereignissen kombiniert mit prädiktiven daten |
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SU1498545A1 (ru) * | 1987-07-14 | 1989-08-07 | Одесский технологический институт пищевой промышленности им.М.В.Ломоносова | Пр моточный смеситель |
JP2590040Y2 (ja) * | 1992-07-28 | 1999-02-10 | 株式会社タクマ | 触媒脱硝設備の還元剤供給装置 |
ATE233368T1 (de) * | 1997-03-13 | 2003-03-15 | Haldor Topsoe As | Verfahren zur selektiven reduktion von nox in abgas |
DE19922959A1 (de) * | 1999-05-19 | 2000-11-23 | Daimler Chrysler Ag | Abgasreinigungsanlage mit Stickoxidreduktion unter Reduktionsmittelzugabe |
DE10048921A1 (de) * | 2000-10-04 | 2002-04-18 | Bosch Gmbh Robert | Vorrichtung zur Bildung eines Reduktionsmittel-Abgas-Gemisches und Abgasreinigungsanlage |
EP1712754A4 (de) | 2004-02-02 | 2010-09-29 | Nissan Diesel Motor Co | Vorrichtung zur abgasreinigung eines verbrennungsmotors |
EP1770253B1 (de) | 2004-07-16 | 2012-09-26 | Nissan Diesel Motor Co., Ltd. | Abgasreinigungsvorrichtung für motor |
US20080104961A1 (en) * | 2006-11-08 | 2008-05-08 | Ronald Scott Bunker | Method and apparatus for enhanced mixing in premixing devices |
DE202006017848U1 (de) | 2006-11-24 | 2007-03-08 | Heinrich Gillet Gmbh | Vorrichtung zum Vermischen von Abgasen aus Verbrennungsmotoren mit Zusatzstoffen |
DE102006058402A1 (de) * | 2006-12-12 | 2008-06-19 | Bayerische Motoren Werke Ag | Vorrichtung zum Zumischen eines Reduktionsmittels in einen Abgasstrom einer Brennkraftmaschine |
JP4375465B2 (ja) * | 2007-09-14 | 2009-12-02 | トヨタ自動車株式会社 | 排気通路の添加剤分散板構造 |
DE102007052262B4 (de) | 2007-11-02 | 2023-11-02 | Bayerische Motoren Werke Aktiengesellschaft | Einrichtung zum Mischen und/oder Verdampfen eines Reduktionsmittels sowie Einrichtung zur Beaufschlagung eines Abgasstroms mit einem Reduktionsmittel |
US8376036B2 (en) * | 2007-11-02 | 2013-02-19 | Az Evap, Llc | Air to air heat exchanger |
JP2009138598A (ja) * | 2007-12-05 | 2009-06-25 | Toyota Motor Corp | 排気通路の添加剤分散板構造 |
RU75589U1 (ru) * | 2008-02-20 | 2008-08-20 | Закрытое акционерное общество "ДАР/ВОДГЕО" | Статический струйный смеситель |
US9429058B2 (en) * | 2008-12-01 | 2016-08-30 | GM Global Technology Operations LLC | Mixing devices for selective catalytic reduction systems |
WO2010127682A2 (en) * | 2009-05-05 | 2010-11-11 | Siemens Aktiengesellschaft | Swirler, combustion chamber, and gas turbine with improved mixing |
US8683790B2 (en) * | 2009-11-10 | 2014-04-01 | GM Global Technology Operations LLC | Nozzle diffuser mixer |
RU2430775C1 (ru) * | 2010-03-09 | 2011-10-10 | Федеральное государственное унитарное предприятие Всероссийский научно-исследовательский институт расходометрии (ФГУП ВНИИР) | Массообменное устройство |
DE102011112988A1 (de) * | 2011-09-10 | 2012-04-05 | Daimler Ag | Abgasanlage für ein Fahrzeug |
-
2011
- 2011-10-28 DE DE102011117139A patent/DE102011117139A1/de not_active Withdrawn
-
2012
- 2012-10-16 WO PCT/EP2012/070478 patent/WO2013060598A1/de active Application Filing
- 2012-10-16 CN CN201280052934.9A patent/CN104066498B/zh active Active
- 2012-10-16 JP JP2014537556A patent/JP2014532549A/ja active Pending
- 2012-10-16 EP EP12779006.1A patent/EP2771098B1/de active Active
- 2012-10-16 RU RU2014121303A patent/RU2614686C2/ru active
- 2012-10-16 KR KR1020147011888A patent/KR20140072176A/ko not_active Application Discontinuation
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2014
- 2014-04-28 US US14/262,961 patent/US9416703B2/en active Active
Non-Patent Citations (1)
Title |
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See references of WO2013060598A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2771098B1 (de) | 2016-08-31 |
JP2014532549A (ja) | 2014-12-08 |
DE102011117139A1 (de) | 2013-05-02 |
CN104066498B (zh) | 2017-03-08 |
RU2014121303A (ru) | 2015-12-10 |
CN104066498A (zh) | 2014-09-24 |
RU2614686C2 (ru) | 2017-03-28 |
WO2013060598A1 (de) | 2013-05-02 |
US20140230419A1 (en) | 2014-08-21 |
US9416703B2 (en) | 2016-08-16 |
KR20140072176A (ko) | 2014-06-12 |
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