CN214403720U - SCR mixing device - Google Patents
SCR mixing device Download PDFInfo
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- CN214403720U CN214403720U CN202120630754.0U CN202120630754U CN214403720U CN 214403720 U CN214403720 U CN 214403720U CN 202120630754 U CN202120630754 U CN 202120630754U CN 214403720 U CN214403720 U CN 214403720U
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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
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Abstract
The utility model discloses a SCR mixing arrangement is equipped with preceding baffle, backplate, first orifice plate, second orifice plate and guide plate in the shell. The baffle, the pore plate, the guide plate and the spoiler with simple structures are arranged inside the shell, the internal structure is simple, and the airflow backpressure is small; each plate divides the inside of the shell into a plurality of cavities, so that urea liquid drops are decomposed and mixed for many times in the plurality of separated cavities, the urea crystallization risk is reduced, the ammonia mixing uniformity is improved, and NO is improvedxThe conversion rate of the catalyst ensures the overall performance of the catalyst; and moreover, the baffle, the pore plate, the guide plate and the spoiler are all simple plate-type structures, so that the processing technology difficulty is low, and the processing cost is low.
Description
Technical Field
The utility model belongs to the technical field of engine exhaust aftertreatment technique and specifically relates to a SCR mixing arrangement.
Background
In an engine exhaust aftertreatment system, the exhaust emission of an engine is generally subjected to aftertreatment by using a Selective Catalytic Reduction (SCR) technology; in order to ensure that urea liquid drops can be fully and uniformly mixed with the tail gas of the diesel engine in the aftertreatment system, a mixer is added in the aftertreatment system, urea aqueous solution is sprayed into the mixer, and the urea aqueous solution is heated by the tail gas and decomposed into ammonia (NH)3) Ammonia gas (NH) under the action of catalyst3) Removing Nitrogen Oxides (NO) from exhaust gasesX) Reduction to harmless nitrogen (N)2) And water (H)2O), and finally discharged from the tail gas pipe, thereby achieving the purpose of reducing the emission.
The inside of the existing mixer is usually provided with a rotational flow structure to improve the mixing uniformity of ammonia gas so as to reduce the risk of urea crystallization; but the rotational flow structure is relatively complex, the processing technology difficulty is higher, and the processing cost is higher; and the more complicated the internal structure of the mixer, the greater the flow resistance of the gas flow and the greater the back pressure.
SUMMERY OF THE UTILITY MODEL
The SCR mixing device is reasonable in structure, simple in inner structure, low in processing difficulty, low in processing cost and small in airflow backpressure.
The utility model discloses the technical scheme who adopts as follows:
an SCR mixing device is characterized in that a front baffle and a rear baffle are arranged in a shell, an upper air inlet is arranged above the front baffle, and a lower air inlet is arranged below the front baffle; an air outlet is arranged below the rear baffle; a first pore plate, a second pore plate and a guide plate are arranged between the front baffle and the rear baffle, the second pore plate is positioned between the front baffle and the first pore plate, and the guide plate is positioned below the second pore plate and has a distance with the second pore plate; the first pore plate is provided with a plurality of first through holes, the second pore plate is provided with a plurality of second through holes, the guide plate is provided with a vertical plate part, and the vertical plate part is provided with a plurality of third through holes; a spoiler is arranged at the rear side of the rear baffle, and a plurality of air outlet holes are formed in the surface of the spoiler; the cavity between the front baffle and the spoiler in the shell is divided into a first cavity between the front baffle and the first orifice plate and above the second orifice plate, a second cavity below the deflector, a third cavity between the first orifice plate and the second orifice plate and above the deflector, and a fourth cavity between the rear baffle and the spoiler; the first cavity is communicated with the upper air inlet, and the second cavity is communicated with the lower air inlet; the first cavity and the third cavity are communicated with the second through hole through the first through hole, the second cavity and the fourth cavity are communicated with each other through the third through hole, the third cavity and the fourth cavity are communicated with each other through the gas outlet, and the fourth cavity is communicated with the outside through the gas outlet.
The baffle, the pore plate, the guide plate and the spoiler with simple structures are arranged inside the shell, the internal structure is simple, and the airflow backpressure is small; each plate divides the inside of the shell into a plurality of cavities, so that urea liquid drops are decomposed and mixed for many times in the plurality of separated cavities, the urea crystallization risk is reduced, the ammonia mixing uniformity is improved, and NO is improvedxThe conversion rate of the catalyst ensures the overall performance of the catalyst; and moreover, the baffle, the pore plate, the guide plate and the spoiler are all simple plate-type structures, so that the processing technology difficulty is low, and the processing cost is low.
As a further improvement of the above technical solution:
the preceding side welded fastening of second orifice plate is on the wall of baffle in the front, and back side welded fastening is on the downside edge of first orifice plate, and the second orifice plate is by preceding to the setting of slope backward.
The guide plate comprises an arc plate part, a flat plate part and a vertical plate part, wherein the arc plate part is turned upwards from the front end of the flat plate part, and the vertical plate part is vertically turned downwards from the rear end of the flat plate part; the front side edge of the arc plate part is welded and fixed on the wall surface of the front baffle plate, and the welding part is positioned below the welding part of the second pore plate.
The flat plate portion is inclined downward from front to rear.
The utility model discloses a connection position of the arc board portion of guide plate and preceding baffle forms the arc transition, can improve the airflow velocity of flow at connection position, avoids forming the air current dead zone that flows, has reduced the risk of urea gathering crystallization.
The vertical plate part of the guide plate is a minor arc plate, the outline size of the arc edge of the minor arc plate is matched with the inner outline size of the shell, and the minor arc plate is fixed on the lower side wall surface of the shell.
The air outlet hole is not arranged on the plate surface part of the spoiler which is positioned right behind the vertical plate part.
The surface without holes on the spoiler of the utility model plays a role in blocking and deflecting the airflow flowing out of the third through hole, on one hand, the airflow can be prevented from directly blowing the carrier in the rear SCR device; on the other hand, the air flow can be guided to change direction and flow upwards, the difference of the upper and lower flow velocity caused by the air outlet hole in the shell is reduced, the uniformity of the flow velocity of the air is improved, meanwhile, the air flow flows upwards, the mixing path of the air flow can be prolonged, and the uniformity of urea mixing is improved.
The spoiler is a circular plate, and the outline dimension of the outer circle of the spoiler is matched with the outline dimension of the outer shell.
The first orifice plate is a semicircular plate, the outline size of the arc edge of the first orifice plate is matched with the inner outline size of the shell, and the first orifice plate is fixed on the upper side wall surface of the shell.
The rear baffle is a minor arc plate, the contour dimension of the arc edge of the rear baffle is matched with the inner contour dimension of the shell, and the rear baffle is positioned right behind the first orifice plate and fixed on the upper side wall surface of the shell.
The circumferential wall surface of the shell is provided with a through jet hole opposite to the first cavity, and the inner wall surface of the shell is fixedly provided with a sleeve corresponding to the jet hole.
The utility model discloses a sleeve pipe shelters from in the urea nozzle periphery of setting in the injection orifice, will block from the air current that the last air inlet got into, avoids the air current directly to blow urea and spouts the ray, and form the urea crystallization on blowing down the urea liquid drop to first orifice plate.
The utility model has the advantages as follows:
the baffle, the pore plate, the guide plate and the spoiler with simple structures are arranged inside the shell, the internal structure is simple, and the airflow backpressure is small; each plate divides the inside of the shell into a plurality of cavities, so that urea liquid drops are decomposed and mixed for many times in the plurality of separated cavities, the urea crystallization risk is reduced, the ammonia mixing uniformity is improved, and NO is improvedxThe conversion rate of the catalyst ensures the overall performance of the catalyst; and moreover, the baffle, the pore plate, the guide plate and the spoiler are all simple plate-type structures, so that the processing technology difficulty is low, and the processing cost is low.
The utility model discloses a connection position of the arc board portion of guide plate and preceding baffle forms the arc transition, can improve the airflow velocity of flow at connection position, avoids forming the air current dead zone that flows, has reduced the risk of urea gathering crystallization. The inclined flat plate part plays a role in guiding airflow, so that the airflow flowing resistance is favorably reduced, and the back pressure is reduced.
The surface without holes on the spoiler of the utility model plays a role in blocking and deflecting the airflow flowing out of the third through hole, on one hand, the airflow can be prevented from directly blowing the carrier in the rear SCR device; on the other hand, the air flow can be guided to change direction and flow upwards, the difference of the upper and lower flow velocity caused by the air outlet hole in the shell is reduced, the uniformity of the flow velocity of the air is improved, meanwhile, the air flow flows upwards, the mixing path of the air flow can be prolonged, and the uniformity of urea mixing is improved.
The utility model discloses a sleeve pipe shelters from in the urea nozzle periphery of setting in the injection orifice, will block from the air current that the last air inlet got into, avoids the air current directly to blow urea and spouts the ray, and form the urea crystallization on blowing down the urea liquid drop to first orifice plate.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a longitudinal sectional view of fig. 1.
Fig. 4 is an enlarged view of a portion a in fig. 3.
In the figure: 1. a housing; 11. an injection hole; 2. a front baffle; 21. an upper inlet port; 22. a lower air inlet; 3. a first orifice plate; 31. a first through hole; 4. a second orifice plate; 41. a second through hole; 5. a baffle; 51. an arc plate portion; 52. a flat plate portion; 53. a vertical plate portion; 531. a third through hole; 6. a tailgate; 61. an air outlet; 7. a spoiler; 71. an air outlet; 8. a sleeve; 10. a first cavity; 20. a second cavity; 30. a third cavity; 40. and a fourth cavity.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 3, the front baffle 2 is vertically provided along the radial direction at the middle lower part of the inner wall surface of the front end of the cylindrical housing 1, the upper air inlet 21 is formed above the front baffle 2, and the lower air inlet 22 is formed below the front baffle 2.
As shown in fig. 2 and 3, the first orifice plate 3, the rear baffle 6, and the spoiler 7 are sequentially arranged in the housing 1 from front to rear on the rear side of the front baffle 2 at a distance from each other. The first orifice plate 3 is a semicircular plate, the contour dimension of the circular arc edge of the first orifice plate is matched with the inner contour dimension of the shell 1, the first orifice plate 3 is fixed on the upper side wall surface of the shell 1 through welding, and a plurality of first through holes 31 are formed in the surface of the first orifice plate 3. The rear baffle 6 is a minor arc plate, the contour dimension of the arc edge of the minor arc plate is matched with the inner contour dimension of the shell 1, the rear baffle 6 is positioned right behind the first orifice plate 3 and fixed on the upper side wall surface of the shell 1 through welding, and an air outlet 61 is formed below the rear baffle 6. The spoiler 7 is a circular plate, the outline size of the outer circle of the spoiler 7 is matched with the outline size of the inner circle of the shell 1, the spoiler 7 is fixed on the circumferential wall surface of the shell 1 through welding, and the plate surface of the spoiler 7 is provided with a plurality of air outlet holes 71.
As shown in fig. 2 and 3, a second orifice plate 4 is disposed in the housing 1 between the front baffle 2 and the first orifice plate 3, a baffle plate 5 is disposed below the second orifice plate 4, and a gap is formed between the second orifice plate 4 and the baffle plate 5. The plate surface of the second orifice plate 4 is provided with a plurality of second through holes 41; as shown in fig. 3, the front side of the second orifice plate 4 is welded and fixed to the wall surface of the front baffle 2, the rear side is welded and fixed to the lower side of the first orifice plate 3, and the second orifice plate 4 is inclined upward from front to back. As shown in fig. 2 and 3, the air deflector 5 is composed of an arc plate part 51, a flat plate part 52 and a vertical plate part 53 which are connected in sequence from front to back, the arc plate part 51 is turned up from the front end of the flat plate part 52, and the vertical plate part 53 is turned over from the back end of the flat plate part 52 vertically and downwards; as shown in fig. 3, the front side edge of the arc plate part 51 is welded and fixed on the wall surface of the front baffle 2, the welding part is located below the welding part of the second orifice plate 4, and the connecting part of the arc plate part 51 and the front baffle 2 forms arc transition, so that the airflow velocity of the connecting part can be improved, the formation of an airflow flowing dead zone is avoided, and the risk of urea aggregation and crystallization is reduced; the flat plate part 52 is slightly inclined downwards from front to back, and the inclined flat plate part 52 plays a role in guiding airflow, so that airflow flowing resistance is favorably reduced, and back pressure is reduced; the vertical plate part 53 is a minor arc plate, the contour dimension of the arc edge of the minor arc plate is matched with the inner contour dimension of the shell 1, the minor arc plate is welded and fixed on the lower side wall surface of the shell 1, and the vertical plate part 53 is provided with a plurality of third through holes 531. As shown in fig. 4, the air outlet 71 is not formed in the part of the plate surface of the spoiler 7 located right behind the vertical plate portion 53, and the plate surface without the air outlet has a function of blocking and turning the airflow flowing out of the third through hole 531, so that on one hand, the airflow can be prevented from blowing the carrier in the rear SCR device; on the other hand, the air flow can be guided to change direction and flow upwards, the difference of the upper and lower flow velocity caused by the air outlet 71 in the shell 1 is reduced, the uniformity of the flow velocity of the air is improved, meanwhile, the air flow flows upwards, the mixing path of the air flow can be prolonged, and the uniformity of urea mixing is improved.
As shown in fig. 3, the first orifice plate 3, the second orifice plate 4, the baffle 5, and the rear baffle 6 divide the cavity between the front baffle 2 and the spoiler 7 in the housing 1 into a plurality of cavities: the baffle plate comprises a first cavity 10, a second cavity 20, a third cavity 30 and a fourth cavity 40, wherein the first cavity 10 is located between a front baffle plate 2 and a first pore plate 3 and above a second pore plate 4, the second cavity 20 is located below a guide plate 5, the third cavity 30 is located between the first pore plate 3, the second pore plate 4 and a rear baffle plate 6 and above the guide plate 5, and the fourth cavity 40 is located between the rear baffle plate 6 and a spoiler 7. The first chamber 10 is communicated with an upper air inlet 21, and the second chamber 20 is communicated with a lower air inlet 22; the first cavity 10 and the third cavity 30 are communicated with the second through hole 41 through the first through hole 31, the second cavity 20 and the fourth cavity 40 are communicated through the third through hole 531, the third cavity 30 and the fourth cavity 40 are communicated through the air outlet 61, and the fourth cavity 40 is communicated with the outside through the air outlet 71.
As shown in fig. 2 and 3, a circumferential wall surface of the housing 1 is opened with a through injection hole 11 facing the first cavity 10, and the injection hole 11 is used for mounting a nozzle holder connected with a urea nozzle. The sleeve 8 is fixedly arranged on the inner wall surface of the shell 1 corresponding to the spray hole 11, the sleeve 8 shields the periphery of the urea nozzle arranged in the spray hole 11, and the air flow entering from the upper air inlet 21 is shielded, so that the urea is prevented from blowing directly to the urea spray line and blowing urea liquid drops to the first pore plate 3 to form urea crystals.
The utility model discloses during the in-service use, the urea nozzle sprays the urea liquid drop through jet orifice 11 toward first cavity 10 in. The air flow coming from the front enters the shell 1, under the flow guiding action of the front baffle 2, a part of the air flow enters the first cavity 10 from the upper air inlet 21, and is mixed and shaped with urea liquid drops in the first cavity 10Forming primary mixed gas; the primary mixed gas passes through the plurality of first through holes 31 of the first pore plate 3 and the second through holes 41 of the second pore plate 4 to enter the third cavity 30, and the large-particle urea liquid drops are crushed into small-particle liquid drops by the first pore plate 3 and the second pore plate 4 and are pyrolyzed to form secondary mixed gas; the secondary mixed gas enters the fourth cavity 40 from the gas outlet 61 under the flow guide of the flow guide plate 5 and the rear baffle 6, the rear baffle 6 forces the secondary mixed gas to turn downwards and is mixed with the secondary mixed gas at other parts again to form tertiary mixed gas, and the mixing uniformity is improved; the tertiary mixed gas passes through the air outlet 71 of the spoiler 7 to be discharged, the spoiler 7 further crushes and pyrolyzes the urea liquid drops, the urea liquid drops are further mixed, and the mixing uniformity is improved. The other part of the air flow coming from the front enters the second cavity 20 from the lower air inlet 22, and the air flow heats the guide plate 5, so that the wall temperature of the guide plate 5 is at a higher level, urea liquid drops can be fully absorbed and volatilized, the urea crystallization risk is reduced, and NO is increasedxThe conversion of (a); the part of the air flow enters the fourth cavity 40 through the third through hole 531 of the vertical plate part 53 and is discharged from the air outlet hole 71 of the spoiler 7, and the part of the air flow is further mixed with the third mixed air in the fourth cavity 40 to form turbulent flow, so that the mixing path is increased, the mixing effect is better, and the mixing uniformity is higher.
The utility model has the advantages that the baffle, the orifice plate, the guide plate 5 and the spoiler 7 with simple structure are arranged inside the shell 1, the internal structure is simple, and the airflow backpressure is small; each plate divides the inside of the shell 1 into a plurality of cavities, so that urea liquid drops are decomposed and mixed for a plurality of times in the plurality of separated cavities, the urea crystallization risk is reduced, the ammonia mixing uniformity is improved, and NO is improvedxThe conversion rate of the catalyst ensures the overall performance of the catalyst; moreover, the baffle, the pore plate, the guide plate 5 and the spoiler 7 are all simple plate-type structures, so that the processing technology difficulty is low, and the processing cost is low.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a SCR mixing arrangement, baffle (2), backplate (6) before being equipped with in shell (1), its characterized in that: an upper air inlet (21) is arranged above the front baffle (2), and a lower air inlet (22) is arranged below the front baffle; an air outlet (61) is arranged below the rear baffle (6);
a first pore plate (3), a second pore plate (4) and a guide plate (5) are arranged between the front baffle (2) and the rear baffle (6), the second pore plate (4) is positioned between the front baffle (2) and the first pore plate (3), and the guide plate (5) is positioned below the second pore plate (4) and has a distance with the second pore plate (4); a plurality of first through holes (31) are formed in the first pore plate (3), a plurality of second through holes (41) are formed in the second pore plate (4), a vertical plate part (53) is arranged on the guide plate (5), and a plurality of third through holes (531) are formed in the vertical plate part (53);
a spoiler (7) is arranged at the rear side of the rear baffle (6), and a plurality of air outlet holes (71) are formed in the surface of the spoiler (7);
the cavity between the front baffle (2) and the spoiler (7) in the shell (1) is divided into a first cavity (10) between the front baffle (2) and the first orifice plate (3) and above the second orifice plate (4), a second cavity (20) below the spoiler (5), a third cavity (30) between the first orifice plate (3) and the second orifice plate (4) and above the spoiler (5), and a fourth cavity (40) between the backplate (6) and the spoiler (7) by the first orifice plate (3), the second orifice plate (4), the deflector (5) and the backplate (6); the first cavity (10) is communicated with the upper air inlet (21), and the second cavity (20) is communicated with the lower air inlet (22); the first cavity (10) and the third cavity (30) are communicated with the second through hole (41) through the first through hole (31), the second cavity (20) and the fourth cavity (40) are communicated through the third through hole (531), the third cavity (30) and the fourth cavity (40) are communicated through the air outlet (61), and the fourth cavity (40) is communicated with the outside through the air outlet (71).
2. An SCR mixing device as defined in claim 1, wherein: the preceding side welded fastening of second orifice plate (4) is on the wall of preceding baffle (2), and back side welded fastening is on the downside edge of first orifice plate (3), and second orifice plate (4) is by preceding to the setting of backward tilt up.
3. An SCR mixing device as defined in claim 1, wherein: the guide plate (5) comprises an arc plate part (51), a flat plate part (52) and a vertical plate part (53), wherein the arc plate part (51) is turned upwards from the front end of the flat plate part (52), and the vertical plate part (53) is turned downwards from the rear end of the flat plate part (52); the front side edge of the arc plate part (51) is welded and fixed on the wall surface of the front baffle plate (2), and the welding part is positioned below the welding part of the second pore plate (4).
4. An SCR mixing device as defined in claim 3, wherein: the flat plate portion (52) is inclined downward from front to rear.
5. An SCR mixing device as defined in claim 3, wherein: the vertical plate part (53) of the guide plate (5) is a minor arc plate, the outline size of the arc edge of the minor arc plate is matched with the inner outline size of the shell (1), and the minor arc plate is fixed on the lower side wall surface of the shell (1).
6. An SCR mixing device as defined in claim 1, wherein: the air outlet hole (71) is not formed in the plate surface part of the spoiler (7) right behind the vertical plate part (53).
7. An SCR mixing device as defined in claim 1, wherein: the spoiler (7) is a circular plate, and the outline dimension of the outer circle of the spoiler is matched with the outline dimension of the inner circle of the shell (1).
8. An SCR mixing device as defined in claim 1, wherein: the first pore plate (3) is a semicircular plate, the outline size of the arc edge of the first pore plate is matched with the inner outline size of the shell (1), and the first pore plate (3) is fixed on the upper side wall surface of the shell (1).
9. An SCR mixing device as defined in claim 1, wherein: the rear baffle (6) is a minor arc plate, the contour dimension of the arc edge of the minor arc plate is matched with the inner contour dimension of the shell (1), and the rear baffle (6) is positioned right behind the first orifice plate (3) and fixed on the upper side wall surface of the shell (1).
10. An SCR mixing device as defined in claim 1, wherein: a through jet hole (11) is arranged on the circumferential wall surface of the shell (1) opposite to the first cavity (10), and a sleeve (8) is fixedly arranged on the inner wall surface of the shell (1) corresponding to the jet hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120630754.0U CN214403720U (en) | 2021-03-29 | 2021-03-29 | SCR mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120630754.0U CN214403720U (en) | 2021-03-29 | 2021-03-29 | SCR mixing device |
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| CN214403720U true CN214403720U (en) | 2021-10-15 |
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| CN202120630754.0U Active CN214403720U (en) | 2021-03-29 | 2021-03-29 | SCR mixing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294082A (en) * | 2022-02-07 | 2022-04-08 | 无锡威孚力达催化净化器有限责任公司 | High-efficient blender device of exhaust aftertreatment |
| CN114412618A (en) * | 2022-01-27 | 2022-04-29 | 无锡威孚力达催化净化器有限责任公司 | Near-wall blowing type urea mixing device without crushing structure |
| CN114483264A (en) * | 2022-01-28 | 2022-05-13 | 无锡威孚力达催化净化器有限责任公司 | High-efficient anti-crystallization mixer device |
| CN114963238A (en) * | 2022-04-18 | 2022-08-30 | 北京控制工程研究所 | Non-toxic single-component engine reaction chamber and assembly method |
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2021
- 2021-03-29 CN CN202120630754.0U patent/CN214403720U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412618A (en) * | 2022-01-27 | 2022-04-29 | 无锡威孚力达催化净化器有限责任公司 | Near-wall blowing type urea mixing device without crushing structure |
| CN114412618B (en) * | 2022-01-27 | 2024-01-02 | 无锡威孚力达催化净化器有限责任公司 | Near-wall blowing urea mixing device without crushing structure |
| CN114483264A (en) * | 2022-01-28 | 2022-05-13 | 无锡威孚力达催化净化器有限责任公司 | High-efficient anti-crystallization mixer device |
| CN114294082A (en) * | 2022-02-07 | 2022-04-08 | 无锡威孚力达催化净化器有限责任公司 | High-efficient blender device of exhaust aftertreatment |
| CN114963238A (en) * | 2022-04-18 | 2022-08-30 | 北京控制工程研究所 | Non-toxic single-component engine reaction chamber and assembly method |
| CN114963238B (en) * | 2022-04-18 | 2023-07-14 | 北京控制工程研究所 | Non-toxic single-component engine reaction chamber and assembly method |
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