WO2013099312A1 - 還元剤水溶液ミキシング装置及び排気ガス後処理装置 - Google Patents
還元剤水溶液ミキシング装置及び排気ガス後処理装置 Download PDFInfo
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- WO2013099312A1 WO2013099312A1 PCT/JP2012/060447 JP2012060447W WO2013099312A1 WO 2013099312 A1 WO2013099312 A1 WO 2013099312A1 JP 2012060447 W JP2012060447 W JP 2012060447W WO 2013099312 A1 WO2013099312 A1 WO 2013099312A1
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- pipe
- aqueous solution
- reducing agent
- exhaust gas
- exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
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- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/02—Tubes being perforated
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- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a reducing agent aqueous solution mixing device, in particular, disposed in parallel with a filter between a filter that collects particulate matter in exhaust gas and a reduction catalyst that reduces and purifies nitrogen oxides in exhaust gas.
- the present invention relates to a reducing agent aqueous solution mixing device for adding a reducing agent aqueous solution to a gas.
- the present invention also relates to an exhaust gas aftertreatment device provided with the above reducing agent aqueous solution mixing device.
- the engine exhaust gas contains nitrogen oxides (NOx).
- an exhaust gas aftertreatment device is provided in the middle of the exhaust path.
- the exhaust gas aftertreatment device includes a filter that collects particulate matter in the exhaust gas, a urea aqueous solution mixing device that is disposed on the exhaust downstream side of the filter and that adds a urea aqueous solution to the exhaust gas, and further includes the mixing device.
- a reduction catalyst that is disposed on the downstream side and that reduces and purifies nitrogen oxides in the exhaust gas.
- the urea aqueous solution mixing device in the above exhaust gas aftertreatment device has an injector for injecting a urea aqueous solution as a reducing agent into the exhaust pipe.
- the urea aqueous solution injected from the injector into the exhaust pipe is mixed with the exhaust gas and supplied to the reduction catalyst on the exhaust downstream side.
- the urea aqueous solution is thermally decomposed by the exhaust gas to obtain ammonia.
- this ammonia is used as a reducing agent, and nitrogen oxides in the exhaust gas are reduced and purified.
- an inner pipe is provided inside the exhaust pipe to form a double pipe structure, and a urea aqueous solution is injected into the inner pipe.
- a urea aqueous solution is injected into the inner pipe.
- an airless type injector when using an airless type injector, it is conceivable to provide an elbow pipe on the exhaust upstream side of the double pipe structure in which the inner pipe is arranged, and to place the injector outside the curved portion of the elbow pipe.
- the injector outlet is opposed to the inlet opening of the inner tube, and the urea aqueous solution can be injected from the injector toward the inner tube and along the exhaust flow.
- An object of the present invention is to efficiently introduce a reducing agent aqueous solution injected from an injector into an inner pipe in a reducing agent aqueous solution mixing apparatus using an injector that directly injects an aqueous reducing agent solution such as an aqueous urea solution into an exhaust pipe. Another object is to prevent the reducing agent aqueous solution from adhering to the inner wall of the exhaust pipe where the injector is mounted.
- a reducing agent aqueous solution mixing device is disposed between a filter that collects particulate matter in exhaust gas and a reduction catalyst that reduces and purifies nitrogen oxides in exhaust gas, and is reduced in the exhaust gas.
- An apparatus for adding an aqueous solution of an agent which includes an exhaust pipe, an injector, an inner pipe, and a cylindrical guide member.
- the exhaust pipe has an elbow part having a curved part and a straight part provided on the exhaust downstream side of the elbow part.
- the injector is provided outside the curved portion of the elbow portion and injects only the reducing agent aqueous solution not mixed with air into the elbow portion toward the straight portion.
- the inner pipe is disposed on the exhaust downstream side of the injector, the inlet opening on the upstream side of the exhaust is opposed to the injector and the outer peripheral surface is spaced from the inner wall of the straight portion, and exhaust gas is disposed inside and on the outer peripheral portion. Distribution is possible.
- the cylindrical guide member guides the reducing agent aqueous solution injected from the injector to the inner tube.
- the exhaust gas flowing from the upstream side flows into the straight part provided with the inner tube through the elbow part.
- the reducing agent aqueous solution is injected from the injector toward the inner pipe.
- the injected reducing agent aqueous solution is guided by the guide member and guided to the inner tube.
- the reducing agent aqueous solution injected from the injector can be efficiently guided to the inner tube. Therefore, it can suppress that reducing agent aqueous solution adheres to the inner wall of an elbow part.
- a reducing agent aqueous solution mixing apparatus is the mixing pipe according to the first invention, wherein the guide member is arranged so as to cover the periphery of the reducing agent aqueous solution injected from the injector and has a plurality of openings on the outer peripheral surface. It is.
- the exhaust gas flowing into the elbow part passes through the opening on the outer peripheral surface of the mixing pipe and flows into the mixing pipe.
- a reducing agent aqueous solution is injected from the injector into the mixing pipe, and therefore, the exhaust gas and the reducing agent aqueous solution are mixed inside the mixing pipe.
- the exhaust gas mixed with the mixing pipe and the reducing agent aqueous solution flow into the inner pipe on the downstream side.
- the inner tube is heated by the exhaust gas flowing on the outer peripheral portion, and even if the reducing agent aqueous solution adheres to the inner wall of the inner tube, it is evaporated and converted into ammonia. For this reason, it can suppress that reducing agent aqueous solution adheres to the inner wall of an exhaust pipe and an inner pipe.
- the mixing pipe is disposed so that the outlet portion on the downstream side of the exhaust flow is spaced from the inner wall of the exhaust pipe. And between the exit part and the inner wall of the exhaust pipe, a circulation part is formed that guides the exhaust gas on the outer periphery of the mixing pipe to the inner pipe.
- a flow passage is formed between the outlet of the mixing pipe and the inner wall of the exhaust pipe so as to guide the exhaust gas from the outer periphery of the mixing pipe to the inner pipe.
- the mixing pipe is supported by a wall whose end opposite to the outlet is opposed to the straight portion of the elbow.
- a reducing agent aqueous solution mixing apparatus is the apparatus according to any one of the second to fourth inventions, wherein the plurality of openings of the mixing pipe are formed only in a part of an angular region in a circumferential direction of the mixing pipe. Yes.
- the opening of the mixing pipe is formed only in a part of the outer peripheral surface, the exhaust gas taken in through the opening forms a constant flow. Therefore, the flow of the exhaust gas facilitates the mixing of the exhaust gas and the reducing agent aqueous solution and the decomposition of the reducing agent aqueous solution.
- the reducing agent aqueous solution mixing apparatus is the apparatus of the fifth aspect of the present invention, wherein the plurality of openings of the mixing pipe have an outer periphery of the mixing pipe in a circumferential direction at 90 ° intervals in order of the first region, the second region, When the third area and the fourth area are divided into four equal parts, they are formed only in the first area and the third area, or only in the second area and the fourth area.
- the exhaust gas inside the mixing pipe forms a constant flow, so that mixing of the exhaust gas and the reducing agent aqueous solution and decomposition of the reducing agent aqueous solution are promoted.
- the inner diameter of the inlet portion of the inner pipe is larger than the inner diameter of the outlet portion of the mixing pipe.
- the exhaust gas and the reducing agent aqueous solution mixed inside the mixing pipe smoothly flow into the inner pipe. Further, the exhaust gas that has passed through the circulation portion on the outer periphery of the mixing pipe can easily flow into the inner pipe.
- the reducing agent aqueous solution mixing device is the device according to the seventh invention, wherein the mixing pipe and the inner tube are such that the outlet opening of the mixing pipe and the inlet opening of the inner tube include the injection angle range of the injector. Has been placed.
- the outlet opening of the mixing pipe is wider than the diffusion range of the injected reducing agent aqueous solution, so that the injected reducing agent aqueous solution is prevented from directly colliding with the inner wall of the mixing pipe. Therefore, it is possible to suppress the reducing agent aqueous solution from adhering as droplets to the inner wall of the mixing pipe. Moreover, since the opening of the inlet part of the inner tube is wider than the diffusion range of the reducing agent aqueous solution, the injected reducing agent aqueous solution can be efficiently taken into the inner tube.
- a reducing agent aqueous solution mixing apparatus is the apparatus according to any one of the first to eighth aspects, wherein a plurality of locations in the circumferential direction of the outer peripheral portion of the inner tube are exhausted at one location along the exhaust flow.
- a support member having a support portion for supporting the tube is further provided. And exhaust gas can distribute
- the outer peripheral part of the inner pipe is supported by the exhaust pipe by the support part of the support member. Then, on the outer periphery of the inner pipe, the exhaust gas smoothly flows in a region other than the support portion. Further, since no opening is formed on the outer peripheral surface of the inner tube, a sufficient amount of exhaust gas flows on the outer periphery of the inner tube, and the inner tube is efficiently heated.
- a reducing agent aqueous solution mixing apparatus is the apparatus of any one of the first to eighth aspects, wherein the outlet portion of the inner pipe is supported by the exhaust pipe, and the outer peripheral surface of the inner pipe and the inner wall of the exhaust pipe are A support member for restricting the flow of exhaust gas therebetween is further provided. A plurality of openings are formed on the outer peripheral surface of the outlet portion of the inner tube.
- the exhaust gas flow is regulated by the support member. Therefore, the exhaust gas at the outer peripheral portion of the inner pipe flows into the inside through the opening on the outer peripheral surface of the inner pipe in the vicinity of the outlet portion. For this reason, the exhaust gas and the reducing agent aqueous solution are further mixed at the outlet portion of the inner pipe. For this reason, decomposition
- the mixing pipe and the inner pipe are arranged coaxially.
- the exhaust gas mixed with the mixing pipe and the reducing agent aqueous solution flow smoothly into the inner pipe.
- An exhaust gas aftertreatment device includes a filter that collects particulate matter in the exhaust gas, and the reduction according to any one of the first to eleventh aspects of the present invention that is arranged in parallel with the filter on the exhaust downstream side of the filter. And a reducing catalyst disposed on the exhaust downstream side of the reducing agent aqueous solution mixing device for reducing and purifying nitrogen oxides in the exhaust gas.
- An exhaust gas aftertreatment device is the device of the twelfth aspect, wherein the reduction catalyst is arranged in parallel with the reducing agent aqueous solution mixing device.
- the reducing agent aqueous solution injected from the injector can be efficiently guided to the inner pipe. It is possible to prevent the reducing agent aqueous solution from adhering to the inner wall of the exhaust pipe where the injector is mounted.
- the cross-sectional block diagram of the urea aqueous solution mixing apparatus by one Embodiment of this invention The front view of a flange.
- the right view of FIG. The figure for demonstrating arrangement
- FIG. 1 is a configuration diagram of an exhaust gas aftertreatment device 1 according to an embodiment of the present invention.
- the exhaust gas aftertreatment device 1 includes a diesel particulate filter (hereinafter referred to as “DPF”) 1A and an aqueous urea solution in order from the exhaust upstream side (hereinafter simply referred to as “upstream side”).
- DPF diesel particulate filter
- upstream side an aqueous urea solution in order from the exhaust upstream side
- upstream side hereinafter simply referred to as “upstream side”.
- a mixing apparatus 1B and a nitrogen oxide reduction catalyst (hereinafter referred to as “SCR”) 1C are provided. Each of these devices is provided in the middle of an exhaust pipe through which exhaust gas discharged from a diesel engine (not shown) through an exhaust manifold flows.
- SCR nitrogen oxide reduction catalyst
- the DPF 1A collects particulate matter in the exhaust gas and is housed inside the case 4A.
- the urea aqueous solution mixing apparatus 1B adds a urea aqueous solution as a reducing agent to the exhaust gas.
- the added urea aqueous solution is hydrolyzed to become ammonia, and the ammonia is supplied to the SCR 1C through the connecting pipe 2 together with the exhaust gas.
- the urea aqueous solution mixing apparatus 1B will be described in detail later.
- ammonia from the urea aqueous solution mixing apparatus 1B is used as a reducing agent, and nitrogen oxides in the exhaust gas are reduced and purified.
- the SCR 1C is housed inside the case 4C.
- the case 4A for storing the DPF 1A, the urea aqueous solution mixing device 1B, and the case 4C for storing the SCR 1C are arranged in parallel. Then, the end of the case 4A on the exhaust downstream side (hereinafter simply referred to as “downstream side”) and the upstream end of the urea aqueous solution mixing device 1B are connected, and the downstream end of the urea aqueous solution mixing device 1B and the case are connected.
- the upstream end of 4C is connected by a curved connecting pipe 2.
- the case 4A, the urea aqueous solution mixing device 1B, and the case 4C are arranged in an S shape, and a compact exhaust gas aftertreatment device is configured as a whole.
- an oxidation catalyst for oxidizing the unburned fuel in the exhaust gas may be provided upstream of the DPF 1A.
- an ammonia reduction catalyst for oxidizing excess ammonia may be provided on the downstream side of the SCR 1C.
- FIG. 2 shows a configuration of a urea aqueous solution mixing apparatus 1B according to an embodiment of the present invention. As described above, the urea aqueous solution mixing apparatus 1B is arranged between the DPF 1A and the SCR 1C. In FIG. 1, the connection pipe 2 connected to the downstream side of the urea aqueous solution mixing apparatus 1B is also included.
- the urea aqueous solution mixing apparatus 1B has an exhaust pipe 4B, an injector 5 for injecting the urea aqueous solution, a mixing pipe 6, and an inner pipe 7.
- the exhaust pipe 4 ⁇ / b> B has an elbow portion 10 disposed on the exhaust upstream side (hereinafter simply referred to as “upstream side”) and a straight portion 11 disposed on the downstream side of the elbow portion 10. Both the elbow part 10 and the straight part 11 are formed in a cylindrical shape.
- the elbow part 10 is a connecting pipe for flowing the exhaust gas flowing from the x direction shown in FIG. 2 (the direction in which the exhaust gas flows on the upstream side) in the y direction perpendicular to the x direction.
- the elbow part 10 has a curved part 10a.
- a mounting portion 10b formed in a plane along the x direction is formed on the outer portion of the curved portion 10a. That is, the mounting portion 10 b faces the inlet opening of the straight portion 11.
- flange portions 10c and 10d for connection are formed at the upstream end portion and the downstream end portion of the elbow portion 10, respectively.
- Each flange portion 10c, 10d is formed with a hole in which a connecting bolt is mounted.
- the straight portion 11 is a straight tube extending along the y direction.
- a flange (support member) 12 for connection and support is welded to the upstream end portion of the straight portion 11, and an annular adapter 13 for connecting the connection pipe 2 is welded to the downstream end portion.
- the flange 12 is a rectangular plate member as shown in FIG. At four corners of the flange 12, holes 12a are formed in which bolts for connecting to the flange 10d of the elbow 10 are mounted. In addition, a hole 12 b having the same diameter as the inner diameter of the linear portion 11 is formed in the center portion of the flange 12. Further, four support protrusions 12c having the same shape are provided in the hole 12b so as to protrude from the outer peripheral side toward the center. The four support protrusions 12c are arranged at equiangular intervals.
- the elbow part 10 and the linear part 11 are connected by fixing such a flange 12 to the flange part 10d of the elbow part 10 with a bolt.
- the injector 5 is attached to the mounting portion 10b together with the mixing pipe 6 at the outer portion of the curved portion 10a of the elbow portion 10. Details of this mounting structure will be described later.
- the injector 5 injects only the urea aqueous solution from the tip outlet into the mixing pipe 6 toward the straight portion 11 without mixing with air.
- the injector 5 used in this embodiment has an injection angle of 25 °, and the center of the injection port of the injector 5 is located on an extension line of the central axis CL of the straight portion 11 of the exhaust pipe 4B.
- FIG. 5 is a right side view of FIG.
- the mixing pipe 6 has a cylindrical shape, and the central axis is coaxial with the central axis CL of the linear portion 11.
- the mixing pipe 6 is arranged at a position where the urea aqueous solution from the injector 5 is injected into the elbow part 10. That is, the mixing pipe 6 is disposed so as to cover the periphery of the urea aqueous solution injected from the injector 5.
- a plurality of openings 6 a are formed on the outer surface of the mixing pipe 6. As shown in FIG. 5, the plurality of openings 6 a are arranged in the first region A, the second region B, the third region C, and the fourth region D in order in the circumferential direction at 90 ° intervals on the outer periphery of the mixing pipe 6. When divided into four, it is formed only in the second region B and the fourth region D.
- the first plate 15 is fixed to the upstream end (the left end in FIGS. 2 and 4) opposite to the outlet of the mixing pipe 6 by welding.
- the first plate 15 has a substantially triangular shape having a curved portion on each side, and includes a pipe fixing portion 15 a, a mounting portion 15 b, and a guide portion 15 c.
- the end of the mixing pipe 6 is fixed to the pipe fixing portion 15a by welding.
- the mounting portion 15b is formed in a step difference from the pipe fixing portion 15a on the outer peripheral side of the pipe fixing portion 15a, and is attached to the mounting portion 10b of the elbow portion 10 with a bolt.
- the guide part 15c is formed in the center part of the pipe fixing part 15a, and is formed in the taper shape which becomes a small diameter as it leaves
- An opening is formed at the end of the guide portion 15c opposite to the pipe fixing portion 15a.
- a recess 15d is formed on the opposite side of the first plate 15 from the mixing pipe 6, a recess 15d is formed.
- the second plate 16 is fitted into the recess 15d and fixed by welding.
- the second plate 16 has a disk shape, and a hole 16a is formed at the center of the second plate 16 in which the ejection port of the injector 5 is disposed.
- the second plate 16 has a plurality of screw holes 16b, and the injector 5 is supported by the second plate 16 through the screw holes 16b.
- the inner tube 7 is formed in a cylindrical shape, and the outer peripheral surface is supported by the tip of the support protrusion 12 c of the flange 12, which are fixed by welding.
- the inner pipe 7 is arranged at a distance from the inner wall of the straight portion 11 on the downstream side of the mixing pipe 6. That is, a double pipe is formed by the inner pipe 7 and the straight portion 11. Further, the inner diameter of the inner pipe 7 is larger than the outer diameter of the mixing pipe 6, and the inner pipe 7 is disposed at a predetermined distance from the outlet portion of the mixing pipe 6.
- a predetermined distance L is provided in the y direction between the outlet portion of the mixing pipe 6 and the inlet portion of the inner pipe 7. Moreover, the inner diameter di of the inlet portion of the inner pipe 7 is larger than the inner diameter dm of the outlet portion of the mixing pipe 6.
- the injection angle range of the injector 5 (the range inside the angle ⁇ (25 ° in this embodiment) in FIG. 6) is the outlet opening of the mixing pipe 6 and the inlet of the inner pipe 7.
- the range is narrower than the opening of the part. That is, the outlet opening of the mixing pipe 6 and the inlet opening of the inner tube 7 include the injection angle range of the injector 5.
- an aqueous urea solution is injected from the injector 5 toward the inside of the mixing pipe 6.
- the range in which the urea aqueous solution is injected is a range of 25 ° with the central axis of the mixing pipe 6 as the center.
- the exhaust gas from the upstream side flows toward the region where the urea aqueous solution is injected.
- the urea aqueous solution is injected toward the inside of the mixing pipe 6 and the exhaust gas flows through the opening 6a of the mixing pipe 6 and flows into the inside, the injected urea aqueous solution is not easily affected by the exhaust gas. For this reason, it is suppressed that urea aqueous solution adheres to the inner wall (especially area
- the opening 6a of the mixing pipe 6 when the exhaust gas passes through the opening 6a of the mixing pipe 6 and flows into the inside, the opening 6a is formed only in the second region B and the fourth region D. Therefore, the exhaust gas that has passed through these openings 6a. Is a swirl flow as shown in FIG. 8 inside the mixing pipe 6.
- the swirling flow of the exhaust gas promotes the mixing of the exhaust gas and the urea aqueous solution, and promotes the refinement of the urea aqueous solution.
- the exhaust gas to which the urea aqueous solution has been added by the mixing pipe 6 and the exhaust gas that has passed through the circulation part 20 flow into the inner pipe 7.
- the exhaust gas that has mainly passed through the circulation part 20 flows toward the downstream side. 7 is heated.
- the urea aqueous solution is hydrolyzed to ammonia by the heat of the exhaust gas and the water vapor in the exhaust gas.
- the aqueous urea solution adheres to the inner wall of the inner tube 7. As described above, since the inner tube 7 is heated by the exhaust gas passing through the outer peripheral portion thereof, the reaction is promoted to the inner tube 7. Adhesion of the urea aqueous solution is suppressed.
- ammonia produced as described above is supplied to the SCR together with the exhaust gas.
- ammonia is used as a reducing agent, and nitrogen oxides in the exhaust gas are reduced and purified.
- the opening 6a of the mixing pipe 6 is formed only in a part of the outer peripheral surface, the exhaust gas flowing through the opening 6a and flowing into the mixing pipe 6 becomes a swirling flow. Due to the swirling flow of the exhaust gas, the urea aqueous solution injected from the injector 5 is well dispersed and the miniaturization is promoted inside the mixing pipe. Therefore, the exhaust gas and the urea aqueous solution are uniformly mixed.
- a circulation portion 20 is formed on the outer peripheral portion of the outlet portion of the mixing pipe 6, and exhaust gas flowing from the upstream side flows into the mixing pipe 6 and passes through the circulation portion 20 to be inside. Guided to tube 7. Therefore, the flow resistance of the exhaust gas in the exhaust pipe 4B is reduced, and the back pressure of the engine is suppressed.
- the mixing pipe 6 is supported by the elbow part 10 only at the end opposite to the outlet part, and there is no member or the like that hinders the flow of exhaust gas in the circulation part 20 on the outer periphery of the outlet part. Therefore, the flow path resistance inside the exhaust pipe 4B can be further reduced.
- a predetermined interval is provided in the direction along the exhaust flow between the outlet of the mixing pipe 6 and the inlet of the inner pipe 7, and the inlet of the inner pipe 7 is the diameter of the outlet of the mixing pipe 6. Greater than.
- the outlet opening of the mixing pipe 6 and the inlet opening of the inner tube 7 include the injection angle range of the urea aqueous solution injected from the injector 5. Therefore, the exhaust gas can easily flow into the inner pipe 7, and the urea aqueous solution injected from the injector 5 is prevented from directly colliding with the inner wall of the mixing pipe 6, and the injected urea aqueous solution is efficiently passed through the inner pipe 7. Can be captured inside.
- FIG. 9 shows another embodiment.
- the embodiment shown in FIG. 9 is different from the previous embodiment only in the inner pipe and its support structure, and the connection structure of the elbow part and the straight part of the exhaust pipe, and the other configurations are the same as the previous embodiment.
- the exhaust pipe 24 in this embodiment includes an elbow part 25 and a straight part 26.
- the elbow part 25 is different in the structure of the connecting part with the straight part 26, but the other configuration is the same as the elbow part 10 of the previous embodiment.
- the straight portion 26 has a flange portion 26a whose diameter increases toward the upstream side at the upstream end portion.
- a flange unit 27 made of an annular member or gasket is provided at the downstream end of the elbow portion 25.
- the flange portion 26 a of the straight portion 26 is connected to the flange unit 27 of the elbow portion 25.
- four supporting recesses 26b that are recessed toward the inner peripheral side are formed in a substantially intermediate portion in the longitudinal direction along the exhaust flow of the linear portion 26.
- the inner tube 30 is formed in a cylindrical shape, and the outer peripheral surface of the substantially intermediate portion in the longitudinal direction is in contact with the four support recesses 26 b of the linear portion 26. Further, the outer peripheral surface of the outlet side end portion of the inner tube 30 is supported by the linear portion 26 by an annular support member 31.
- the support member 31 is fixed to the outer peripheral surface of the outlet side end portion of the inner tube 30 by spot welding. Therefore, the flow of the exhaust gas flowing on the outer periphery of the inner pipe 30 is regulated by the support member 31.
- “regulation” includes a case where all the exhaust gas flowing in the outer peripheral portion of the inner pipe 30 is shut off and a case where a small amount of exhaust gas is allowed to pass.
- an opening 30a is formed at the outlet side end portion of the inner tube 30 over a predetermined range on the upstream side except for the region where the support member 31 is provided.
- the flow of the exhaust gas flowing in the outer peripheral portion of the inner tube 30 is regulated by the support member 31 after the inner tube 30 is heated.
- the exhaust gas blocked by the support member 31 passes through the opening 30 a of the inner tube 30 and is guided into the inner tube 30. Then, it is mixed with the urea aqueous solution again at the outlet portion of the inner tube 30.
- the exhaust gas and the urea aqueous solution can be mixed more efficiently.
- the shape of the mixing pipe 6 ' may be tapered so that the diameter increases toward the downstream side in the injection direction.
- the urea aqueous solution injected from the injector 5 can be prevented from adhering to the inner wall of the mixing pipe 6 '.
- the openings 6 a are formed in the second region B and the fourth region D of the mixing pipe 6.
- the openings are formed in the first region A and the third region C facing each other. You may form.
- the opening may be formed only in one of the four regions.
- Each region where the opening is formed is not limited to a range of 90 °.
- the opening may be formed in a region over an angle range of less than 90 ° or greater than 90 °.
- the reducing agent aqueous solution injected from the injector can be efficiently guided to the inner pipe, and the reducing agent aqueous solution adheres to the inner wall of the exhaust pipe where the injector is attached. Can be suppressed.
- Exhaust gas aftertreatment device 1A DPF 1B Urea aqueous solution mixing device 1C SCR 4, 24 Exhaust pipe 5 Injector 6, 6 ′ Mixing pipe 6 a Opening 7, 30 Inner pipe 30 a Inner pipe opening 10, 25 Elbow part 10 a Curved part 11, Straight part 12 Flange (support member) 12c Support protrusion 20 Flowing portion 26b Support recesses B and D Regions where openings 6a are formed
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Abstract
Description
ムーズに流れ込む。また、ミキシングパイプの外周の流通部を通過した排気ガスも内管に流れ込みやすくなる。
図1は本発明の一実施形態による排気ガス後処理装置1の構成図である。この排気ガス後処理装置1は、排気上流側(以下、単に「上流側」と記す)から順に、ディーゼル・パーティキュレート・フィルタ(Diesel particulate filter:以下、「DPF」と記す)1Aと、尿素水溶液ミキシング装置1Bと、窒素酸化物還元触媒(以下、「SCR」と記す)1Cと、を備えている。これらの各装置は、図示しないディーゼルエンジンから排気マニホールドを介して排出される排気ガスが流通する排気管の途中に設けられている。
図2に本発明の一実施形態による尿素水溶液ミキシング装置1Bの構成を示している。尿素水溶液ミキシング装置1Bは、前述のように、DPF1AとSCR1Cとの間に配置されている。なお、図1では、尿素水溶液ミキシング装置1Bの下流側に接続された接続管2も含めて示している。
排気管4Bは、排気上流側(以下、単に「上流側」と記す)に配置されたエルボ部10と、エルボ部10の下流側に配置された直線部11と、を有している。エルボ部10及び直線部11はともに円筒状に形成されている。
インジェクタ5は、エルボ部10の湾曲部10aの外側部分において、ミキシングパイプ6とともに取付部10bに装着されている。この取付構造の詳細は後述する。インジェクタ5は、先端の噴出口から尿素水溶液のみをエアと混合することなく直線部11に向かってミキシングパイプ6の内部に噴射する。この実施形態に用いられるインジェクタ5は、噴射角度が25°であり、このインジェクタ5の噴出口の中心は、排気管4Bの直線部11の中心軸CLの延長線上に位置している。
ミキシングパイプ6は、このミキシングパイプ6をエルボ部10に固定するための部材等とサブユニット化されている。このサブユニットを図4及び図5に示す。なお、図5は図4の右側面図である。
内管7は、図2及び図3に示すように、円筒状に形成され、外周面はフランジ12の支持突起12cの先端によって支持されており、これらは溶接されて固定されている。これにより、内管7は、ミキシングパイプ6の下流側において、直線部11の内壁との間に間隔をあけて配置されている。すなわち、内管7と直線部11によって二重管が形成されている。また、内管7の内径はミキシングパイプ6の外径よりも大きく、内管7はミキシングパイプ6の出口部から所定の距離離れて配置されている。
図6を用いて、インジェクタ5(尿素水溶液の噴射角度)と、ミキシングパイプ6と、内管7と、エルボ部10及び直線部11を含む排気管4Bとの位置関係を詳細に説明する。ここで、前述のように、ミキシングパイプ6と内管7とは同軸上に配置されており、インジェクタ5の噴出口は、これらの中心軸CLの延長線上に位置しており、内管7の入口部開口と対向している。
エンジンの稼働時には、排気ガスが排気マニホールドを介して排気管に排出される。この排気ガスは、エルボ部10に流れてくる。エルボ部10に流入してきた排気ガスは、図7の矢印G1で示すように、ミキシングパイプ6の外周面の開口6aを通過してミキシングパイプ6の内部に流入する。また、排気ガスは、図7の矢印G2で示すように、ミキシングパイプ6の外周面とエルボ部10の内壁との間に形成された流通部20を通過して内管7に導かれる。
(1)尿素水溶液はミキシングパイプ6の内部に噴射され、排気ガスはミキシングパイプ6の開口6aを通過してミキシングパイプ6の内部に流入する。したがって、尿素水溶液がエルボ部10の内壁に付着するのが抑えられる。
本発明は以上のような実施形態に限定されるものではなく、本発明の範囲を逸脱することなく種々の変形又は修正が可能である。
1A DPF
1B 尿素水溶液ミキシング装置
1C SCR
4,24 排気管
5 インジェクタ
6,6’ ミキシングパイプ
6a 開口
7,30 内管
30a 内管の開口
10,25 エルボ部
10a 湾曲部
11,26 直線部
12 フランジ(支持部材)
12c 支持突起
20 流通部
26b 支持用凹部
B,D 開口6aが形成された領域
Claims (13)
- 排気ガス中の粒子状物質を捕集するフィルタと排気ガス中の窒素酸化物を還元浄化する還元触媒との間に配置され、排気ガス中に還元剤水溶液を添加するための還元剤水溶液ミキシング装置であって、
湾曲部を有するエルボ部と、前記エルボ部の排気下流側に設けられた直線部と、を有する排気管と、
前記エルボ部の湾曲部外側に設けられ、空気が混合されていない還元剤水溶液のみを前記直線部に向かって前記エルボ部内部に噴射するインジェクタと、
前記インジェクタの排気下流側に、排気上流側の入口部開口が前記インジェクタに対向しかつ外周面が前記直線部の内壁との間に間隔をあけて配置され、内部及び外周部を排気ガスが流通可能な内管と、
前記インジェクタから噴射された還元剤水溶液を前記内管に導くための筒状の案内部材と、
を備えた還元剤水溶液ミキシング装置。 - 前記案内部材は、前記インジェクタから噴射される還元剤水溶液の周囲を覆うように配置され、外周面に複数の開口を有するミキシングパイプである、請求項1に記載の還元剤水溶液ミキシング装置。
- 前記ミキシングパイプは、排気下流側の出口部が前記排気管の内壁との間に間隔を有するように配置され、
前記出口部と前記排気管の内壁との間には、前記ミキシングパイプの外周部の排気ガスを前記内管に導く流通部が形成されている、
請求項2に記載の還元剤水溶液ミキシング装置。 - 前記ミキシングパイプは、前記出口部とは逆側の端部が前記エルボ部の前記直線部と対向する壁に固定されている、請求項3に記載の還元剤水溶液ミキシング装置。
- 前記ミキシングパイプの複数の開口は、前記ミキシングパイプの円周方向の一部の角度領域にのみ形成されている、請求項2から4のいずれかに記載の還元剤水溶液ミキシング装置。
- 前記ミキシングパイプの複数の開口は、前記ミキシングパイプの外周を、90°間隔で円周方向に順に第1領域、第2領域、第3領域、第4領域に4等分した場合、第1領域及び第3領域にのみ、あるいは第2領域及び第4領域にのみ形成されている、請求項5に記載の還元剤水溶液ミキシング装置。
- 前記内管の入口部の内径は前記ミキシングパイプの出口部の内径より大きい、請求項2から6のいずれかに記載の還元剤水溶液ミキシング装置。
- 前記ミキシングパイプ及び前記内管は、前記ミキシングパイプの出口部開口と前記内管の入口部開口が前記インジェクタの噴射角度範囲を内包するように配置されている、請求項7に記載の還元剤水溶液ミキシング装置。
- 排気流に沿った方向の1個所で、前記内管の外周部の円周方向の複数箇所を前記排気管に支持するための支持部を有する支持部材をさらに備え、
前記支持部材と前記内管の外周面との間の前記支持部以外の領域は排気ガスが流通可能であり、
前記内管の外周面には開口が形成されていない、
請求項1から8のいずれかに記載の還元剤水溶液ミキシング装置。 - 前記内管の出口部を前記排気管に支持するとともに、前記内管の外周面と前記排気管の内壁との間の排気ガスの流通を規制する支持部材をさらに備え、
前記内管の出口部の外周面には、複数の開口が形成されている、
請求項1から8のいずれかに記載の還元剤水溶液ミキシング装置。 - 前記ミキシングパイプと前記内管とは同軸に配置されている、請求項2から10のいずれかに記載の還元剤水溶液ミキシング装置。
- 排気ガス中の粒子状物質を捕集するフィルタと、
前記フィルタの排気下流側において、前記フィルタと並列に配置された請求項1から11のいずれかに記載の還元剤水溶液ミキシング装置と、
前記還元剤水溶液ミキシング装置の排気下流側に配置され、排気ガス中の窒素酸化物を還元浄化する還元触媒と、
を備えた排気ガス後処理装置。 - 前記還元触媒は前記還元剤水溶液ミキシング装置と並列に配置されている、請求項12に記載の排気ガス後処理装置。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9664081B2 (en) | 2007-07-24 | 2017-05-30 | Faurecia Emissions Control Technologies, Germany Gmbh | Assembly and method for introducing a reducing agent into the exhaust pipe of an exhaust system of an internal combustion engine |
US9714598B2 (en) | 2015-04-30 | 2017-07-25 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer with integrated doser cone |
US9719397B2 (en) | 2015-04-30 | 2017-08-01 | Faurecia Emissions Control Technologies Usa, Llc | Mixer with integrated doser cone |
US9726064B2 (en) | 2015-04-30 | 2017-08-08 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer for use in a vehicle exhaust system |
US9828897B2 (en) | 2015-04-30 | 2017-11-28 | Faurecia Emissions Control Technologies Usa, Llc | Mixer for a vehicle exhaust system |
US10227907B2 (en) | 2014-06-03 | 2019-03-12 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer and doser cone assembly |
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US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
EP3748088A1 (en) * | 2019-06-05 | 2020-12-09 | Ford Global Technologies, LLC | Assembly for an urea tank system |
US10933387B2 (en) | 2016-10-21 | 2021-03-02 | Faurecia Emissions Control Technologies, Usa, Llc | Reducing agent mixer |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5349575B2 (ja) * | 2011-12-27 | 2013-11-20 | 株式会社小松製作所 | 還元剤水溶液ミキシング装置及び排気ガス後処理装置 |
JP5349574B2 (ja) * | 2011-12-27 | 2013-11-20 | 株式会社小松製作所 | 還元剤水溶液ミキシング装置及び排気ガス後処理装置 |
JP5728578B2 (ja) * | 2013-01-17 | 2015-06-03 | 株式会社小松製作所 | 還元剤水溶液ミキシング装置およびこれを備えた排気ガス後処理装置 |
DE102013212565A1 (de) | 2013-06-28 | 2014-12-31 | Robert Bosch Gmbh | Kraftstoffhochdruckpumpe |
DE102013223296A1 (de) * | 2013-11-15 | 2015-05-21 | Robert Bosch Gmbh | Einspritzmodul und Abgasstrang mit Einspritzmodul |
JP6051154B2 (ja) * | 2013-12-26 | 2016-12-27 | 株式会社クボタ | ディーゼルエンジン |
CN106030068B (zh) | 2014-02-18 | 2019-08-20 | 佛吉亚排放控制技术美国有限公司 | 用于排气系统的集气室 |
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DE102014210638A1 (de) * | 2014-06-04 | 2015-12-17 | Robert Bosch Gmbh | Einspritzmodul und Abgasstrang mit Einspritzmodul |
KR101914396B1 (ko) * | 2014-06-05 | 2018-11-01 | 포레시아 이미션스 컨트롤 테크놀로지스, 유에스에이, 엘엘씨 | 혼합기 조립체를 위한 절연 커버 |
EP3153630A4 (en) * | 2014-06-09 | 2018-01-10 | Volvo Construction Equipment AB | Construction vehicle |
JP2016205188A (ja) * | 2015-04-20 | 2016-12-08 | いすゞ自動車株式会社 | 排気浄化ユニット |
US11149611B2 (en) | 2015-03-30 | 2021-10-19 | Isuzu Motors Limited | Exhaust purification unit |
KR102324758B1 (ko) * | 2017-05-12 | 2021-11-12 | 현대자동차주식회사 | 차량용 도징모듈 |
JP2019011684A (ja) * | 2017-06-29 | 2019-01-24 | いすゞ自動車株式会社 | 排気ガス浄化システム |
DE102017213954A1 (de) * | 2017-08-10 | 2019-02-14 | Robert Bosch Gmbh | Vorrichtung zur Gemischaufbereitung, Abgasnachbehandlungssystem |
CN107559082A (zh) * | 2017-10-10 | 2018-01-09 | 广西玉柴机器股份有限公司 | 柴油机后处理装置 |
CN109723529B (zh) * | 2017-10-30 | 2022-09-06 | 罗伯特·博世有限公司 | 尾气管组件及尾气处理系统 |
DE102018124025A1 (de) * | 2018-09-28 | 2020-04-02 | Man Truck & Bus Se | Vorrichtung zum Zumischen eines flüssigen Reduktionsmittels zum Abgas einer Brennkraftmaschine und Kraftfahrzeug |
US11525380B2 (en) | 2019-01-11 | 2022-12-13 | Cummins Emission Solutions Inc. | Aftertreatment system with multiple dosing modules |
CN112282900A (zh) * | 2019-07-25 | 2021-01-29 | 康明斯排放处理公司 | 废气后处理系统 |
JP7382595B2 (ja) * | 2019-11-12 | 2023-11-17 | 日立造船株式会社 | 整流装置、加水分解装置、及び脱硝設備 |
FR3137413A1 (fr) * | 2022-06-30 | 2024-01-05 | Faurecia Systemes D'echappement | Mélangeur de réducteur pour gaz d’échappement |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004270609A (ja) * | 2003-03-11 | 2004-09-30 | Nissan Diesel Motor Co Ltd | 排気浄化装置 |
JP2008509328A (ja) * | 2004-08-06 | 2008-03-27 | スカニア シーブイ アクチボラグ(パブル) | 内燃機関の排気ガス導管内に媒体を供給するための装置 |
JP2009019610A (ja) * | 2007-07-13 | 2009-01-29 | Hino Motors Ltd | 排気浄化装置 |
JP2009030560A (ja) * | 2007-07-30 | 2009-02-12 | Bosch Corp | 内燃機関の排気浄化装置 |
JP2010101236A (ja) * | 2008-10-23 | 2010-05-06 | Mitsubishi Fuso Truck & Bus Corp | 内燃機関の排気浄化装置 |
JP2011064069A (ja) * | 2009-09-15 | 2011-03-31 | Toyota Industries Corp | 排気ガス処理装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0779092B1 (en) * | 1995-12-14 | 2002-03-20 | Suntec System Co., Ltd. | Exhaust gas processing system |
WO2006025110A1 (ja) | 2004-09-02 | 2006-03-09 | Nissan Diesel Motor Co., Ltd. | 排気浄化装置 |
KR20070028372A (ko) * | 2006-11-21 | 2007-03-12 | 히노 지도샤 가부시키가이샤 | 배기 정화장치 |
CN101245726B (zh) * | 2007-02-12 | 2011-01-26 | 潍柴动力股份有限公司 | 大排量发动机scr后处理管路装置 |
DE202008001547U1 (de) * | 2007-07-24 | 2008-04-10 | Emcon Technologies Germany (Augsburg) Gmbh | Baugruppe zur Einbringung eines Reduktionsmittels in die Abgasleitung einer Abgasanlage einer Verbrennungskraftmaschine |
JP2009156071A (ja) * | 2007-12-25 | 2009-07-16 | Mitsubishi Motors Corp | 内燃機関の排気ガス浄化装置 |
US20110079003A1 (en) * | 2009-10-05 | 2011-04-07 | Caterpillar Inc. | Reductant nozzle indentation mount |
KR101509684B1 (ko) * | 2009-12-03 | 2015-04-06 | 현대자동차 주식회사 | 질소산화물 정화촉매 |
JP5349575B2 (ja) * | 2011-12-27 | 2013-11-20 | 株式会社小松製作所 | 還元剤水溶液ミキシング装置及び排気ガス後処理装置 |
JP5349574B2 (ja) * | 2011-12-27 | 2013-11-20 | 株式会社小松製作所 | 還元剤水溶液ミキシング装置及び排気ガス後処理装置 |
-
2011
- 2011-12-27 JP JP2011285451A patent/JP5349576B2/ja active Active
-
2012
- 2012-04-18 WO PCT/JP2012/060447 patent/WO2013099312A1/ja active Application Filing
- 2012-04-18 CN CN201280001588.1A patent/CN103282615B/zh active Active
- 2012-04-18 KR KR1020127028891A patent/KR101374637B1/ko not_active IP Right Cessation
- 2012-04-18 DE DE112012000089.7T patent/DE112012000089B4/de active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004270609A (ja) * | 2003-03-11 | 2004-09-30 | Nissan Diesel Motor Co Ltd | 排気浄化装置 |
JP2008509328A (ja) * | 2004-08-06 | 2008-03-27 | スカニア シーブイ アクチボラグ(パブル) | 内燃機関の排気ガス導管内に媒体を供給するための装置 |
JP2009019610A (ja) * | 2007-07-13 | 2009-01-29 | Hino Motors Ltd | 排気浄化装置 |
JP2009030560A (ja) * | 2007-07-30 | 2009-02-12 | Bosch Corp | 内燃機関の排気浄化装置 |
JP2010101236A (ja) * | 2008-10-23 | 2010-05-06 | Mitsubishi Fuso Truck & Bus Corp | 内燃機関の排気浄化装置 |
JP2011064069A (ja) * | 2009-09-15 | 2011-03-31 | Toyota Industries Corp | 排気ガス処理装置 |
Cited By (12)
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US9664081B2 (en) | 2007-07-24 | 2017-05-30 | Faurecia Emissions Control Technologies, Germany Gmbh | Assembly and method for introducing a reducing agent into the exhaust pipe of an exhaust system of an internal combustion engine |
US10227907B2 (en) | 2014-06-03 | 2019-03-12 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer and doser cone assembly |
US10294843B2 (en) | 2014-06-03 | 2019-05-21 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer and doser cone assembly |
US9714598B2 (en) | 2015-04-30 | 2017-07-25 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer with integrated doser cone |
US9719397B2 (en) | 2015-04-30 | 2017-08-01 | Faurecia Emissions Control Technologies Usa, Llc | Mixer with integrated doser cone |
US9726064B2 (en) | 2015-04-30 | 2017-08-08 | Faurecia Emissions Control Technologies, Usa, Llc | Mixer for use in a vehicle exhaust system |
US9828897B2 (en) | 2015-04-30 | 2017-11-28 | Faurecia Emissions Control Technologies Usa, Llc | Mixer for a vehicle exhaust system |
US10933387B2 (en) | 2016-10-21 | 2021-03-02 | Faurecia Emissions Control Technologies, Usa, Llc | Reducing agent mixer |
US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
CN109779725A (zh) * | 2019-03-26 | 2019-05-21 | 重庆丰峰动力设备有限公司 | 一种柴油发动机尾气净化处理装置 |
EP3748088A1 (en) * | 2019-06-05 | 2020-12-09 | Ford Global Technologies, LLC | Assembly for an urea tank system |
US11148522B2 (en) | 2019-06-05 | 2021-10-19 | Ford Global Technologies, Llc | Assembly for an urea tank system |
Also Published As
Publication number | Publication date |
---|---|
KR101374637B1 (ko) | 2014-03-14 |
DE112012000089B4 (de) | 2016-06-16 |
CN103282615B (zh) | 2016-03-30 |
DE112012000089T5 (de) | 2013-09-12 |
KR20130086287A (ko) | 2013-08-01 |
JP5349576B2 (ja) | 2013-11-20 |
CN103282615A (zh) | 2013-09-04 |
JP2013133775A (ja) | 2013-07-08 |
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