CN111963281A - Efficient mixer for diesel engine aftertreatment - Google Patents
Efficient mixer for diesel engine aftertreatment Download PDFInfo
- Publication number
- CN111963281A CN111963281A CN202010759592.0A CN202010759592A CN111963281A CN 111963281 A CN111963281 A CN 111963281A CN 202010759592 A CN202010759592 A CN 202010759592A CN 111963281 A CN111963281 A CN 111963281A
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- Prior art keywords
- pipe
- mixing
- mixed
- diesel engine
- inner pipe
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- 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
- 238000002156 mixing Methods 0.000 claims abstract description 64
- 239000004202 carbamide Substances 0.000 claims abstract description 38
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 abstract description 5
- 230000008025 crystallization Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 20
- 239000003054 catalyst Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 239000002912 waste gas Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- XURIQWBLYMJSLS-UHFFFAOYSA-N 1,4,7,10-tetrazacyclododecan-2-one Chemical compound O=C1CNCCNCCNCCN1 XURIQWBLYMJSLS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
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
- F01N3/08—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]
-
- 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
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a high-efficiency mixer for diesel engine aftertreatment, which comprises a cylinder body, wherein an air inlet and an air outlet are respectively arranged at two ends of the cylinder body, and a mixing outer pipe, a middle pipe and a mixing inner pipe are sequentially and coaxially arranged in the cylinder body from outside to inside and vertical to the axis of the cylinder body; the middle pipe and the mixed inner pipe are respectively arranged at two ends of the mixed outer pipe, and the tail end of the mixed inner pipe extends into the tail end of the middle pipe; the side wall of the lower part of the mixing outer pipe is provided with an opening communicated with a gap between the mixing outer pipe and the middle pipe, and the opening is communicated with the air inlet; a rotational flow plate is arranged between the middle pipe and the mixed inner pipe, and a through hole is arranged on the wall surface of the mixed inner pipe far away from the middle pipe; the cylinder is provided with a urea nozzle used for spraying urea into the inner pipe, the bottom of the middle pipe is provided with a silk screen, and a channel communicated with the silk screen and the air outlet is arranged below the mixing outer pipe. The invention can fully and uniformly mix the reducing agent and the engine exhaust, enhance the mixing effect and avoid the crystallization of urea in the mixer.
Description
Technical Field
The invention relates to the technical field of engine parts, in particular to a high-efficiency mixer for aftertreatment of a diesel engine.
Background
The main purification part of NOx in the tail gas of the selective diesel engine is an SCR catalyst, a mixer is arranged in front of the SCR catalyst, and a urea nozzle is arranged on the mixer. The urea injection system calculates the required urea consumption according to the information of the temperature condition of the SCR catalyst, the working condition of the diesel engine and the like, the vehicle urea solution is injected into the mixer through the nozzle, the urea solution is decomposed into NH3 at high temperature and is fully mixed with the high-temperature tail gas of the diesel engine, the mixture enters the SCR catalyst and reacts with NOx in the catalyst to generate N2 and H20, and the purification of the NOx is realized.
The current common mixer such as patent CN201910600550.X changes the flowing characteristic of airflow by utilizing the pipe diameter change, and improves the mixing uniformity of urea and exhaust gas; for example, in patent CN201811390687.9, a front stage swirl mixer is designed in front of the nozzle, and a rear stage mixer is designed at a proper position at the rear end of the nozzle, the front stage swirl mixer forms a rotating airflow to mix urea and exhaust gas, thereby promoting rapid endothermic decomposition of urea droplets, and the urea droplets are not in direct contact with the front stage swirl mixer, thereby avoiding crystallization risk caused by adhesion of urea droplets on the front stage swirl mixer.
However, the urea injection amount is large in the six-stage low-rotation-speed working condition of the existing diesel engine, the airflow velocity of the reducing or swirling mixer is not uniform, and crystals are easily formed in the region with the low velocity.
Disclosure of Invention
In view of the above-mentioned existing defects, the present invention aims to provide a diesel engine post-treatment high-efficiency mixer, which can make the reducing agent and the engine exhaust gas fully and uniformly mixed, enhance the mixing effect, and avoid the crystallization of urea in the mixer.
The technical scheme of the invention is as follows:
a diesel engine aftertreatment high-efficiency mixer comprises a cylinder body, wherein an air inlet and an air outlet are respectively arranged at two ends of the cylinder body, and a mixing outer pipe, a middle pipe and a mixing inner pipe are sequentially and coaxially arranged in the cylinder body from outside to inside and are vertical to the axis of the cylinder body; the middle pipe and the mixed inner pipe are respectively arranged at two ends of the mixed outer pipe, the tail end of the mixed inner pipe extends into the tail end of the middle pipe, and gaps are respectively arranged among the mixed outer pipe, the middle pipe and the mixed inner pipe; the side wall of the lower part of the mixing outer pipe is provided with an opening communicated with a gap between the mixing outer pipe and the middle pipe, and the opening is communicated with the air inlet; a rotational flow plate is arranged in a gap between the middle pipe and the mixed inner pipe, and a through hole is formed in the wall surface of the mixed inner pipe corresponding to the upper part of the middle pipe; the urea spraying device is characterized in that a urea nozzle used for spraying urea into the inner pipe is arranged on the barrel, a silk screen is arranged at the bottom of the middle pipe, a channel communicated with the air outlet is arranged below the mixing outer pipe, and the silk screen is located above the channel.
Specifically, the through holes are formed in the wall surfaces of the left side and the right side of the mixing inner tube and face the air inlet and the air outlet respectively, and the through holes on the left side are located above the openings.
Specifically, the through holes are arranged into more than two groups of vertical holes, and the aperture size of each through hole is 3-10 mm.
Specifically, the diameter ratio of the mixing outer pipe, the intermediate pipe and the mixing inner pipe is 3:2: 1.
Specifically, the mixed outer pipe, the intermediate pipe and the mixed inner pipe are integrally formed.
Specifically, the silk screen is formed by pressing at least two layers of stainless steel wires which are woven in a staggered mode.
Specifically, the wire mesh is connected with the bottom of the middle pipe through brazing.
The invention has the beneficial effects that:
1. set up mixed outer tube on this scheme blender, intermediate tube and mixed inner tube, let tail gas pass through the through-hole on one hand and get into mixing the inner tube and mix with NH3, another way produces rotatory air current through mixing the outer whirl board of inner tube and gets into mixing the inner tube intracavity, drive the further intensive mixing back of NH3 and tail gas, get into the silk screen, make NH3 and high temperature tail gas pass through the aperture fast and avoid the crystallization, the tail pipe that mixes is good passes through back guide plate and discharges, promote the even of air current velocity of flow through two way gas flows, reach reductant and engine exhaust intensive mixing's effect, avoid urea crystallization in the blender.
Drawings
Fig. 1 is a sectional view of a diesel aftertreatment high efficiency mixer of the present invention.
In the figure, 1-cylinder, 2-mixing outer tube, 3-air inlet, 4-air outlet, 5-middle tube, 6-mixing inner tube, 7-through hole, 8-cyclone plate, 9-urea nozzle, 10-opening, 11-wire mesh.
Detailed Description
In order to explain the technical content, the achieved objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings. In the description of the embodiments, it is to be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the embodiments and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation and thus should not be construed as limiting the present invention.
As shown in fig. 1, the mixer for post-treatment of diesel engine according to the embodiment of the present invention comprises a cylinder 1, an outer mixing pipe 2, an intermediate pipe 5, an inner mixing pipe 6, a urea nozzle 9, and a wire mesh 11.
The left end and the right end of the cylinder body 1 are respectively provided with an air inlet 3 and an air outlet 4, and the mixing outer pipe 2, the middle pipe 5 and the mixing inner pipe 6 are coaxially arranged in the cylinder body 1 from outside to inside in sequence and are vertical to the axis of the cylinder body; the mixing inner pipe 6 and the intermediate pipe 5 are respectively arranged at the upper end and the lower end of the mixing outer pipe 2, the end part of the mixing inner pipe 6 extends into the end of the intermediate pipe 5, and gaps are formed among the mixing outer pipe 2, the intermediate pipe 5 and the mixing inner pipe 6; the side wall of the lower part of the mixing outer pipe 2 is provided with an opening 10 for communicating the gap between the mixing outer pipe 2 and the middle pipe 5, and the opening 10 is communicated with the air inlet 3; a rotational flow plate 8 is arranged between the middle pipe 5 and the mixed inner pipe 6, and a through hole 7 is arranged on the wall surface of the mixed inner pipe 6 far away from the middle pipe 5; the urea nozzle 9 used for spraying urea into the inner pipe 5 is arranged on the barrel 1, the silk screen 11 is arranged at the bottom of the middle pipe 5, a channel communicated with the air outlet 4 is arranged below the mixing outer pipe 2, and the silk screen 11 is positioned above the channel.
When the diesel engine works, the urea injection system calculates the required urea consumption according to the information such as the temperature condition of the SCR catalyst, the working condition of the diesel engine and the like, and the vehicle urea solution is injected into the mixer through the nozzle. The urea solution is decomposed into NH3 at high temperature and contacts with the high-temperature tail gas of the diesel engine. Fig. 1 shows the general flowing direction of the air flow when the mixer of the embodiment works, the direction of the air flow is shown by an arrow in fig. 1, the waste gas enters from the left air inlet 3 of the cylinder 1 and flows through the gap between the mixing outer tube 2 and the middle tube 5, at this time, the air flow is divided into two paths, one path of waste gas enters from one side of the gap to the inside of the mixing inner tube 6 from bottom to top through the through hole 7, the urea solution is sprayed from the inside of the mixing inner tube 6 from top to bottom by the urea nozzle 9, the waste gas and the urea solution form opposite impact mixing, and then; the other path of waste gas enters a gap between the middle pipe 5 and the mixing inner pipe 6 from a gap between the mixing outer pipe 2 and the middle pipe 5, generates rotating airflow through the obliquely arranged cyclone plate 8, and enters the lower part of the middle pipe 5 to be further mixed with the waste gas and the urea solution. One path of gas collides with the urea solution, the other path of gas forms a rotational flow, and the two paths of gas flow promote gas
The flow velocity is uniform, the path of the urea is high-temperature tail gas flowing at high speed, and the urea cannot stay or crystallize, so that the effect of fully mixing the reducing agent with the engine exhaust is achieved, and the aim of the invention is achieved; the urea and the tail gas are further mixed and enter a wire mesh 11 at the lower part of a middle pipe 5, the gas flows through the wire mesh 11 and enters a channel at the bottom of a mixing outer pipe 2, then flows out of a mixer from an air outlet 4 at the side surface of a cylinder 1, NH3 and the tail gas are uniformly mixed and then flow out of the mixer and enter an SCR catalyst, NH3 and NOx are catalytically reacted in an SCR catalyst unit through a catalyst to generate N2 and H20, and the purification of the NOx is realized.
As a preferable mode of the present embodiment, the through holes 7 are provided on the wall surfaces on the left and right sides of the mixing inner tube 6 facing the air inlet 3 and the air outlet 4, respectively, and the through hole 7 on the left side is located above the opening 10.
As a preferable scheme of this embodiment, the through holes 7 are provided as two or more groups of vertical holes, the size of the hole diameter of the through holes 7 is 5mm, and the hole diameter ensures that the exhaust gas smoothly flows through the through holes on the one hand, and also disperses the way of the air entering the mixing inner tube 6 on the other hand.
As a preferable scheme of the embodiment, the diameter ratio of the mixing outer pipe 2, the intermediate pipe 5 and the mixing inner pipe 6 is 3:2:1, and a gap is ensured to be enough for the exhaust gas to flow through smoothly.
In a preferred embodiment of the present invention, the outer mixing pipe 2, the intermediate pipe 5, and the inner mixing pipe 6 are integrally formed, so that the number of parts to be mounted is reduced, and the outer mixing pipe 2, the intermediate pipe 5, and the inner mixing pipe 6 are combined in advance to form a desired structural member, so that the outer mixing pipe can be mounted in the cylindrical body 1. Of course, in other embodiments, the mixing outer tube 2, the intermediate tube 5 and the mixing inner tube 6 may be formed separately, installed separately, or formed by welding.
As the preferred scheme of this embodiment, silk screen 11 adopts the stainless steel wire suppression of at least two-layer crisscross weaving to form, and multilayer stainless steel screen 11 adopts multilayer wire net structure, and every layer can adopt stainless steel wire 90 crisscross weaving to form the aperture, and the aperture is standard square, and the aperture shape is fixed, stable in structure, and steel wool scheme on the market at present produces the uniformity good.
As a preferable scheme of this embodiment, the wire mesh 11 is connected to the bottom of the inner tube 5 by soldering, and the wire mesh 11 and the middle tube 5 can be formed into a whole by welding and then directly mounted on the cylinder 1.
Although the invention has been described in detail above with reference to specific embodiments, it will be apparent to one skilled in the art that modifications or improvements may be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. The utility model provides a high-efficient blender of diesel engine aftertreatment, includes barrel (1), the both ends of barrel (1) are provided with air inlet (3), gas outlet (4) respectively, its characterized in that: a mixing outer pipe (2), a middle pipe (5) and a mixing inner pipe (6) are sequentially and coaxially arranged in the cylinder body (1) from outside to inside and are vertical to the axis of the cylinder body; the middle pipe (5) and the mixed inner pipe (6) are respectively arranged at two ends of the mixed outer pipe (2), the tail end of the mixed inner pipe (6) extends into the tail end of the middle pipe (5), and gaps are respectively arranged among the mixed outer pipe (2), the middle pipe (5) and the mixed inner pipe (6); an opening (10) communicated with a gap between the mixing outer pipe (2) and the middle pipe (5) is formed in the side wall of the lower part of the mixing outer pipe (2), and the opening (10) is communicated with the air inlet (3); a swirl plate (8) is arranged in a gap between the middle pipe (5) and the mixed inner pipe (6), and a through hole (7) is formed in the wall surface of the mixed inner pipe (6) corresponding to the upper part of the middle pipe (5); the urea spraying device is characterized in that a urea nozzle (9) used for spraying urea into the inner pipe (5) is arranged on the barrel body (1), a silk screen (11) is arranged at the bottom of the middle pipe (5), a channel communicated with the air outlet (4) is arranged below the mixing outer pipe (2), and the silk screen (11) is located above the channel.
2. The diesel engine aftertreatment high efficiency mixer of claim 1 wherein: the through holes (7) are formed in the wall surfaces of the left side and the right side of the mixing inner tube (6) and face the air inlet (3) and the air outlet (4) respectively, and the through holes (7) on the left side are located above the openings (10).
3. The diesel engine aftertreatment high efficiency mixer of claim 1 wherein: the through holes (7) are arranged into more than two groups of vertical holes, and the aperture size of the through holes (7) is 3-10 mm.
4. The diesel engine aftertreatment high efficiency mixer of claim 1 wherein: the diameter ratio of the mixing outer pipe (2), the intermediate pipe (5) and the mixing inner pipe (6) is 3:2: 1.
5. The diesel engine aftertreatment high efficiency mixer of claim 1 wherein: the mixing outer pipe (2), the middle pipe (5) and the mixing inner pipe (6) are integrally formed.
6. The diesel engine aftertreatment high efficiency mixer of claim 1 wherein: the silk screen (11) is formed by pressing at least two layers of stainless steel wires which are woven in a staggered mode.
7. The diesel engine aftertreatment high efficiency mixer of claim 1 wherein: the wire mesh (11) is connected with the bottom of the middle pipe (5) through brazing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010759592.0A CN111963281B (en) | 2020-07-31 | 2020-07-31 | High-efficient blender of diesel engine aftertreatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010759592.0A CN111963281B (en) | 2020-07-31 | 2020-07-31 | High-efficient blender of diesel engine aftertreatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111963281A true CN111963281A (en) | 2020-11-20 |
| CN111963281B CN111963281B (en) | 2024-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010759592.0A Active CN111963281B (en) | 2020-07-31 | 2020-07-31 | High-efficient blender of diesel engine aftertreatment |
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| Country | Link |
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| CN (1) | CN111963281B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961935A (en) * | 2022-07-04 | 2022-08-30 | 潍柴动力股份有限公司 | Preheat urea injection structure and aftertreatment device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207686808U (en) * | 2017-12-23 | 2018-08-03 | 无锡威孚力达催化净化器有限责任公司 | Side post-processes urea mixing device into nozzle integrated form SCR |
| CN109653849A (en) * | 2019-01-28 | 2019-04-19 | 凯龙高科技股份有限公司 | A kind of urea injection bimetallic tube mixer for diesel engine vent gas post-processing |
| CN210460814U (en) * | 2019-08-26 | 2020-05-05 | 凯龙高科技股份有限公司 | A cylinder compact blender for diesel engine tail gas treatment |
| CN111140324A (en) * | 2020-01-20 | 2020-05-12 | 广西玉柴机器股份有限公司 | Diesel engine aftertreatment blender |
| CN212671903U (en) * | 2020-07-31 | 2021-03-09 | 广西玉柴机器股份有限公司 | Efficient mixer for diesel engine aftertreatment |
-
2020
- 2020-07-31 CN CN202010759592.0A patent/CN111963281B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207686808U (en) * | 2017-12-23 | 2018-08-03 | 无锡威孚力达催化净化器有限责任公司 | Side post-processes urea mixing device into nozzle integrated form SCR |
| CN109653849A (en) * | 2019-01-28 | 2019-04-19 | 凯龙高科技股份有限公司 | A kind of urea injection bimetallic tube mixer for diesel engine vent gas post-processing |
| CN210460814U (en) * | 2019-08-26 | 2020-05-05 | 凯龙高科技股份有限公司 | A cylinder compact blender for diesel engine tail gas treatment |
| CN111140324A (en) * | 2020-01-20 | 2020-05-12 | 广西玉柴机器股份有限公司 | Diesel engine aftertreatment blender |
| CN212671903U (en) * | 2020-07-31 | 2021-03-09 | 广西玉柴机器股份有限公司 | Efficient mixer for diesel engine aftertreatment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961935A (en) * | 2022-07-04 | 2022-08-30 | 潍柴动力股份有限公司 | Preheat urea injection structure and aftertreatment device |
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| Publication number | Publication date |
|---|---|
| CN111963281B (en) | 2024-04-05 |
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