CN203452874U - SCR catalyzing silencer and mixing tube device of SCR catalyzing silencer - Google Patents
SCR catalyzing silencer and mixing tube device of SCR catalyzing silencer Download PDFInfo
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- CN203452874U CN203452874U CN201320410123.3U CN201320410123U CN203452874U CN 203452874 U CN203452874 U CN 203452874U CN 201320410123 U CN201320410123 U CN 201320410123U CN 203452874 U CN203452874 U CN 203452874U
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Abstract
The utility model discloses an SCR catalyzing silencer and a mixing tube device of the SCR catalyzing silencer. The mixing tube device comprises an outer tube and an inner tube which is inserted in the outer tube, wherein one end of the inner tube is a gas inlet end, the gas inlet end is used for enabling exhaust gas in a gas inlet tube of the SCR catalyzing silencer to enter the inner tube, outer penetrating holes are formed in the tube wall of the outer tube, and inner penetrating holes are formed in the tube wall of the inner tube. Therefore, first atomization of a urea solution and the exhaust gas can be carried out at the tube wall of the inner tube, second atomization can be carried out under the effect of the outer penetrating holes of the outer tube, and then the atomized urea solution and the atomized exhaust gas enter an gas inlet cavity. According to the design, secondary crushing and mixing of urea liquid drops can be promoted, the atomization mixing effect of the urea solution and the exhaust gas is remarkably improved, and favorable conditions are created for a follow-up reduction reaction. In addition, the good atomization mixing effect contributes to prevention of adherence and aggregation of the urea liquid drops on the wall face of the mixing tube device or the wall face of an gas inlet cylinder and urea crystallization is prevented. In addition, the design of two layers of penetrating holes is adopted, so that the stroke of exhaust gas flow is lengthened, noise can be effectively reduced, and noise on different frequency bands is weakened.
Description
Technical field
The utility model relates to exhaust gas aftertreatment techniques field, particularly a kind of SCR catalytic muffler and mixing tube device thereof.
Background technique
SCR technology is one of main post-processing technology of eliminating nitrogen oxide in engine exhaust.According to function, SCR system mainly comprises control unit, urea dosage device and catalytic reaction unit three parts.The control unit of SCR system and the control unit of motor (ECU) integrate, mainly for carrying out SCR control strategy, and control urea dosage device according to sensor signals such as ambient temperature, delivery temperature, urea level, urea temperature, urea pressure, NOx concentration, urea dosage device is mapped to spraying urea liquid in exhaust airstream according to demand at regular time and quantity.
Urea liquid sprays into outlet pipe or directly sprays in SCR catalytic muffler through urea nozzle, conventionally in 200 ℃ of above pyrolytic reactions that occur of temperature, produce ammonia (NH3), ammonia reacts with the nitrogen oxide (NOx) in tail gas under the effect of catalyzer in SCR catalytic muffler, reaches the object of eliminating diesel engine vent gas nitrogen oxide (NOx).
Please refer to Fig. 1, Fig. 1 is a kind of structural representation of typical SCR catalytic muffler.
Mixing tube device mainly comprises mixing tube 12, and mixing tube 12 is inserted in the air-inlet cavity of the air induction mast 14 of SCR catalytic muffler, and the tube wall of mixing tube 12 is upwards being provided with some perforation 121 its week.One end of mixing tube 12 is used for connecting suction tude 11, as shown in Figure 1, suction tude 11 comprises inlet pipe connection 111 and reducer eccentric pipe 112, the outlet pipe of inlet pipe connection 111 connecting engines, and the two ends of reducer eccentric pipe 112 are outlet pipe and the mixing tube 12 of connecting engine respectively.The nozzle 13 of SCR catalytic muffler is to the interior injection urea liquid of mixing tube 12, urea liquid and the air-flow entering mix mixing tube 12 is interior, the atomizing effect of the two is strengthened in the perforation 121 of mixing tube 12, so that the two is fully mixed and fed into the interior participation reduction reaction of gas outlet 15, finally by the outer pipe 16 of being located at gas outlet 15, discharged.
Yet there is following technical problem in technique scheme:
Although the first mixing tube 12 is provided with perforation 121, but atomizing effect or not ideal enough, affect the mixed effect of urea liquid and exhaust, cause follow-up reduction reaction not good, and the drop of its urea liquid also easily sticks on the wall of mixing tube 12 and air induction mast 14 and forms crystallization.
The second, the interior flow perturbation of mixing tube 12 is little, there is diffusion district, also cause urea droplets easily at air induction mast 14 and mixing tube 12 walls, assemble and adhere to, make urea liquid form urea crystals under worst cold case, affect reliability and the adaptability of SCR after-treatment system.
In view of this, how improving the mixed effect of the interior exhaust of SCR catalytic muffler and urea liquid, is those skilled in the art's technical problems urgently to be resolved hurrily.
Model utility content
For solving the problems of the technologies described above, the purpose of this utility model is for providing a kind of SCR catalytic muffler and mixing tube device thereof.This mixing tube device can improve the mixed effect of exhaust and urea liquid.
The mixing tube device of the SCR catalytic muffler that the utility model provides, comprise outer tube and be plugged in the inner tube in described outer tube, one end of described inner tube is inlet end, for the exhaust in SCR catalytic muffler suction tude, enter, the tube wall of described outer tube offers outer perforation, and the tube wall of described inner tube offers interior perforation.
The tube wall of outer tube is offered outer perforation, and the tube wall of inner tube is offered interior perforation.So design, urea liquid and exhaust can be carried out atomization for the first time at inner pipe wall, and urea liquid, exhaust mixture after atomization enter outer tube, and under the outer perforation effect of outer tube, carry out atomization for the second time, then enter air-inlet cavity.This kind of design can promote second-time breakage and the mixing of urea droplets, therefore twice atomization can significantly improve the atomization mixed effect of urea liquid, exhaust, and then the uniformity of raising urea spraying distribution, for follow-up reduction reaction creates favorable conditions; And atomization good mixing effect also contributes to stop urea droplets to adhere to, be gathered in the wall of mixing tube device or air induction mast, and then stops urea crystals.In addition, two-layer perforated design, has lengthened the stroke of exhaust airstream, can effectively reduce noise, weaken the noise in different frequency section.
Preferably, the inlet end place of described inner tube or described inner tube inside are provided with the mixer that makes γ-ray emission eddy current.
Preferably, the other end relative with described inlet end is located in described interior perforation, and described interior perforation is along the circumferential arrangement of described inner tube.
Preferably, described interior perforation is arranged in the whole tube wall of described inner tube, and described interior perforation is along the circumferential arrangement of described inner tube.
Preferably, described interior perforation is near the other end setting relative with described inlet end, and the tube wall cross section that is provided with described interior perforation is fan-shaped.
Preferably, the ratio range of the gross area of described interior perforation and described suction tude sectional area is 1.5～2.5.
Preferably, the one end away from described suction tude is located on described outer tube in described outer perforation.
Preferably, described outer perforation is arranged at the middle part of described outer tube.
Preferably, the aperture of described interior perforation is less than the aperture of described outer perforation.
Preferably, be also provided with a bowl type water conservancy diversion arc plate, described in the shutoff of described bowl type water conservancy diversion arc plate on outer tube away from one end of described suction tude.
The utility model also provides a kind of SCR catalytic muffler, comprise suction tude, mixing tube device, air induction mast and gas outlet, described air induction mast and described gas outlet join, described mixing tube device is the mixing tube device described in above-mentioned any one, and the described outer tube of described mixing tube device and described inner tube are inserted the air-inlet cavity of described air induction mast.
Because above-mentioned mixing tube device has above-mentioned technique effect, the SCR catalytic muffler with this mixing tube device also has identical technique effect.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of typical SCR catalytic muffler;
Fig. 2 provides mixing tube device the first embodiment's structural representation for the utility model;
Fig. 3 is the structural representation that is provided with the SCR catalytic muffler of mixing tube device in Fig. 2;
Fig. 4 is the structural representation of mixer in Fig. 2;
Fig. 5 provides mixing tube device the second embodiment's structural representation for the utility model;
Fig. 6 provides mixing tube device the 3rd embodiment's structural representation for the utility model.
In Fig. 1:
11 suction tude, 111 inlet pipe connections, 112 reducer eccentric pipes, 12 mixing tubes, 13 nozzles, 14 air induction masts, 15 gas outlets, 16 outer pipes
In Fig. 2-6:
21 suction tude, 211 inlet pipe connections, 212 reducer eccentric pipes, 22 outer tubes, 221 outer perforation, 23 nozzles, 24 inner tubes, 241 interior perforation, 25 air induction masts, 251 spoilers, 251a penetration hole, 26 gas outlets, 27 bowls of type water conservancy diversion arc plates, 28 outer pipes, 29 mixers
Embodiment
In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 2-4, Fig. 2 provides mixing tube device the first embodiment's structural representation for the utility model; Fig. 3 is the structural representation that is provided with the SCR catalytic muffler of mixing tube device in Fig. 2; Fig. 4 is the structural representation of mixer in Fig. 2.
SCR catalytic muffler comprises suction tude 21, air induction mast 25 and gas outlet 26, and mixing tube device is positioned at the inner chamber of air induction mast 25, i.e. air-inlet cavity.The waste gas of engine exhaust pipe enters mixing tube device by this suction tude 21, and then enters the air-inlet cavity of whole air induction mast 25, then discharged to the inner chamber of gas outlet 26, i.e. outlet chamber.Gas outlet 26 can have the outer pipe 28 that runs through its end and be communicated with its outlet chamber, and the gas after reduction is discharged through outer pipe 28.
This mixing tube device specifically comprises outer tube 22 and the inner tube 24 of joining with the suction tude 21 of SCR catalytic muffler, inner tube 24 is plugged in outer tube 22, as shown in Figure 2, one end of inner tube 24 is inlet end, and first the exhaust in suction tude 21 enters inner tube 24 by the inlet end of inner tube 24.Outer tube 22 and inner tube 24 all can be designed to cylindrical.
In addition, the tube wall of outer tube 22 is offered outer perforation 221, and the tube wall of inner tube 24 is offered interior perforation 241.So design, urea liquid and exhaust can be carried out atomization for the first time at inner tube 24 tube walls, and the urea liquid after atomization, exhaust mixture enter outer tube 22, and under outer perforation 221 effects of outer tube 22, carry out atomization for the second time, then enter air-inlet cavity.This kind of design can promote second-time breakage and the mixing of urea droplets, therefore twice atomization can significantly improve the atomization mixed effect of urea liquid, exhaust, and then the uniformity of raising urea spraying distribution, for follow-up reduction reaction creates favorable conditions; And atomization good mixing effect also contributes to stop urea droplets to adhere to, be gathered in the wall of mixing tube device or air induction mast 25, and then stops urea crystals.In addition, two-layer perforated design, has lengthened the stroke of exhaust airstream, can effectively reduce noise, weaken the noise in different frequency section.
In addition, the inlet end place of inner tube 24 can arrange mixer 29, and mixer 29 can make γ-ray emission eddy current, contributes to the mixing of exhaust and urea liquid, avoids urea droplets directly to encounter wall and urea crystals phenomenon is further avoided in crystallization.A kind of concrete structure of mixer 29 can be understood with reference to figure 4, has rotation blade 291, produces eddy current, thereby accelerates flow perturbation.
Herein, mixer 29 is arranged at the inlet end of inner tube 24, is not that mixer 29 is defined in inlet end, as long as be arranged near inlet end.As shown in Figure 2, the inlet end of outer tube 22 exceeds the inlet end of inner tube 24, and mixer 29 being placed in the inlet end of outer tube 22 is also feasible (near the ports of inner tube 24 inlet ends).Certainly, exhaust finally enters through inner tube 24, therefore be arranged at the inlet end of inner tube 24, can realize better exhaust and the mixing of urea liquid in inner tube 24.In fact, it is also feasible that mixer 29 is arranged at inner tube 24 inside, and the exhaust and the urea liquid that enter in inner tube 24 are strengthened mixing under mixer 29 flow-disturbing effects.Known, after mixer 29 is arranged at suction tude 21.
In above-described embodiment, interior perforation 241 can be arranged in the whole tube wall of inner tube 24, and as shown in Figure 2, so design, so that urea liquid and exhaust can be carried out atomization for the first time and enter outer tube 22 carrying out atomization for the second time along inner tube 24 arbitrary positions, improves nebulization efficiency.Interior perforation 241 should be tried one's best and is opened in equably tube wall, improves the uniformity of mixing.
In this embodiment, interior perforation 241 is not opened in the tube wall of whole inner tube 24, but is located at the bottom of inner tube 24, and along its circumferential arrangement, i.e. 360 degree perforates, bottom is the right-hand member shown in Fig. 5.So design, inner tube 24 inlet ends are without perforate, flowing along with exhaust, urea liquid and exhaust can fully be merged a period of time at high speed at the inlet end of inner tube 24, after fusion at tail end place, by means of interior perforation 241, realize atomization for the first time, and then enter outer tube 22 and carry out atomization for the second time.Compared to the technological scheme of the equal perforate of whole perisporium, can improve mixed effect.
Please refer to Fig. 6, Fig. 6 provides mixing tube device the 3rd embodiment's structural representation for the utility model.
In this embodiment, the tube wall of inner tube 24 offers interior perforation 241 equally, interior perforation 241 and the second embodiment are similar, also be the tail end setting near inner tube 24, in Fig. 6, interior perforation 241 extends to middle part from tail end, interior perforation 241 non-360 degree perforates in this embodiment, but weld access hole, the tube wall cross section that is provided with interior perforation 241 is fan-shaped.
So design, urea liquid and exhaust can fully mix at inner tube 24 tail ends (left end in Fig. 6), while entering tail end, the part tube wall of not offering interior perforation 241 in inner tube 24 still has stronger agitation, under the following that urea liquid and exhaust can mix at strong disturbance, through interior perforation 241, carry out atomization for the first time and mix.The effect of this kind of mixed aerosol mode is more excellent.The fan-shaped angular dimension that the interior perforation 241 of offering forms can be adjusted in conjunction with actual conditions.
Now, the ratio range of the gross area of interior perforation 241 and suction tude 21 sectional areas can be between 1.5～2.5, and optimum scheme is that ratio is 2.So, be conducive to the air-flow of exhaust and urea liquid mixture fast through interior perforation 241, the patency of air-flow is better.
When tail end carries out weld access hole, the outer perforation 221 of outer tube 22 can be located on outer tube 22 away from one end of suction tude 21, and as shown in Figure 6, outer perforation 221 is arranged at right-hand member, and outer perforation 221 can circumferentially arrange along it by 360 degree.So design, adapts with interior perforation 241 designs of inner tube 24, all near right-hand member.Because the part tube wall of inner tube 24 is not offered interior perforation 241, outer perforation 221, near interior perforation 241 designs, is convenient to secondary-atomizing and is mixed.In view of passing through primary atomization, outer tube 22 is all offered outer perforation 221 without whole tube wall, so meeting under the prerequisite of secondary-atomizing, can cut down finished cost.
For the various embodiments described above, outer perforation 221 can be arranged at the middle part of outer tube 22.As described in the 3rd embodiment, outer tube 22 arranges outer perforation 221 without whole tube wall, part is set and can meets the secondary-atomizing demand after atomization for the first time, thereby cut down finished cost.The middle part that is arranged at outer tube 22 is conducive to be full of urea liquid and the exhaust mixture in outer tube 22, successfully carries out comparatively equably secondary-atomizing.Certainly, the setting position of outer perforation 221 can arrange in conjunction with concrete interior perforation 241 set-up modes, and as shown in Figure 5, outer perforation 221 is arranged at the right-hand member of outer tube 22, substantially extends to middle part from right part.In fact, in Fig. 2,5, outer perforation 221 also can be arranged at right-hand member.
In above-described embodiment, inner tube 24 arranges interior perforation 241, when outer tube 22 arranges outer perforation 221, can make the aperture of interior perforation 241 be less than the aperture of outer perforation 221.Exhaust and urea liquid be at first in the interior mixed flow of inner tube 24, speed, and inner tube 24 is offered the interior perforation 241 of small aperture, can accelerate to mix; After inner tube 24, flow to again outer tube 22, carried out good mixing, and Speed Reduction, 221 apertures of now boring a hole outward can be designed bigger than normal, adapt with current mixing exhaust, urea liquid state, can further mix.And the piercing aperture that inside and outside two-layer body is offered is different, can reduce preferably the noise of different frequency.
For the various embodiments described above, mixing tube device also can comprise a bowl type water conservancy diversion arc plate 27, and now, inner tube 24 and outer tube 21 can be fixedly welded on suction tude 21 and bowl type water conservancy diversion arc plate 27, from Fig. 2,5,6, can find out, be provided with the equal butt of tail end of inner tube 24 of interior perforation 241 to a bowl type water conservancy diversion arc plate 27.Bowl type water conservancy diversion arc plate 27 end faces for shutoff outer tube 22 bottoms.Generally, the mixture of urea liquid and exhaust enters inner tube 24, then flows out and enter the air-inlet cavity of SCR catalytic muffler air induction mast 25 through the outer perforation 221 of outer tube 22, and then enters the outlet chamber of gas outlet 26.The mobile stagnation phenomenon of air-inlet cavity bottom is comparatively serious, bowl type water conservancy diversion arc plate 27 structures can effectively strengthen the disturbance of the exhaust airstream of mixing tube bottom of device, further improve air-inlet cavity flows stagnation phenomenon, promote second-time breakage and the mixing of urea liquid drop, thereby prevent that drop from forming urea crystals in air-inlet cavity.
Except above-mentioned mixing tube device, the utility model embodiment also provides a kind of SCR catalytic muffler, comprise suction tude 21, mixing tube device, air induction mast 25 and gas outlet 26, air induction mast 25 and gas outlet 26 join, mixing tube device is the mixing tube device described in above-mentioned arbitrary embodiment, and the outer tube 22 of mixing tube device and inner tube 24 are inserted into the air-inlet cavity of inflator 25.Because above-mentioned mixing tube device has above-mentioned technique effect, the SCR catalytic muffler with above-mentioned mixing tube device also has identical technique effect.
Please continue to refer to Fig. 3, mixing tube device inserts from one end of air induction mast 25, the other end of gas outlet 26 is located in the outlet of SCR catalytic muffler, be the import of exhaust, the two ends that outlet lays respectively at SCR catalytic muffler, be equivalent to take the design of exhaust " end inlet side goes out ", be different from the structure of the exhaust " side inlet side goes out " in Fig. 1.
Adopt side inlet side to go out design, if when vehicle chassis is lower, can reduce vehicle ground clearance, be unfavorable for arrangement.The present embodiment, adopts end inlet side to go out structure, and enough vehicle ground clearances can be provided, and is conducive to arrangement, especially the lower vehicle in car load chassis is had to good adaptability, such as truck.
In this embodiment, in air induction mast 25, spoiler 251 can be set, mixing tube device runs through and is supported in spoiler 251, and spoiler 251 is provided with penetration hole 251a.As shown in Figure 3, the annular perisporium of spoiler 251 is positioned the inwall of air induction mast 25, and the bowl type water conservancy diversion arc plate 27 that install outer tube 22 bottoms runs through and is supported in spoiler 251.251 pairs of mixing tube devices of spoiler can play good support, positioning action, in addition, spoiler 251 is provided with penetration hole 251a, the mixture of exhaust and urea liquid can flow out into from the penetration hole 251a of spoiler 251 in gas outlet 26, penetration hole 251a is when realizing circulation, also have flow-disturbing function concurrently, thereby further prevent urea liquid crystallization on air induction mast 25 walls.
For the various embodiments described above, suction tude 21 comprises the inlet pipe connection 211 for connecting engine outlet pipe, and reducer eccentric pipe 212, and reducer eccentric pipe 212 is convenient to connect mixing tube device.Wherein, the outer wall of inlet pipe connection 211 is provided with fixed support, and fixed support is provided with water-cooling tube and rat tail.Inlet pipe connection 211 directly connects outlet pipe, outlet pipe appearance high temperature, and water-cooling tube easily contacts high-temperature exhaust pipe with rat tail and causes high temperature damage, causes losing efficacy.Arrange after fixed support, can effective location water-cooling tube and rat tail, avoid the two contact with high-temperature exhaust pipe and lost efficacy, and, also contribute to the orderly layout of pipeline, wire harness.Fixed support can directly be weldingly fixed on the outer wall of suction tude 21 connecting tubes.
In addition, SCR catalytic muffler has nozzle 23, temperature transducer and nitrogen oxide sensor, nozzle 23 is for spray urea liquid in mixing tube device, and temperature transducer is for detection of delivery temperature, and nitrogen oxide sensor is for detection of the reduction effect of SCR catalytic muffler.Nozzle 23, temperature transducer and nitrogen oxide sensor all can be integrated in SCR catalytic muffler.Particularly, block temperature sensor, the nozzle carrier of mounting temperature sensor seat and nozzle 23, be all integrated in reducer eccentric pipe 212, and the nitrogen oxide sensor seat that nitrogen oxide sensor is installed is integrated in the outer pipe 28 of gas outlet 26.So design, can save arrangement space, and permission simultaneously adopts shorter outlet pipe, reduces exhaust gas heat loss, improves the front gas flow temperature of carrier, for eliminating efficiently NOX, creates favorable conditions.
SCR catalytic muffler can also comprise the clip that connects suction tude 21 and engine exhaust pipe.Conventionally, waste pipe is connected with the inlet flange of SCR catalytic muffler suction tude 21 by flange, and two flanges are during by clip connected, and it is very convenient to install, convenient operation.
In the various embodiments described above, the shell of air induction mast 25 can have double-deck wall structure, and double-deck wall structure can strengthen the intensity of air induction mast 25 shells, also can reach the object of eliminating noise.
Above a kind of SCR catalytic muffler provided by the utility model and mixing tube device thereof are all described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. the mixing tube device of a SCR catalytic muffler, it is characterized in that, comprise outer tube (22) and be plugged in the inner tube (24) in described outer tube (22), one end of described inner tube (24) is inlet end, for the exhaust in SCR catalytic muffler suction tude (21), enter, the tube wall of described outer tube (22) offers outer perforation (221), and the tube wall of described inner tube (24) offers interior perforation (241).
2. mixing tube device as claimed in claim 1, is characterized in that, the inlet end place of described inner tube (24) or described inner tube (24) inside are provided with the mixer (29) that makes γ-ray emission eddy current.
3. mixing tube device as claimed in claim 1, is characterized in that, the other end relative with described inlet end is located in described interior perforation (241), and described interior perforation (241) is along the circumferential arrangement of described inner tube (24).
4. mixing tube device as claimed in claim 1, is characterized in that, described interior perforation (241) is arranged in the whole tube wall of described inner tube (24), and described interior perforation (241) is along the circumferential arrangement of described inner tube (24).
5. mixing tube device as claimed in claim 1, is characterized in that, the other end relative with described inlet end is located in described interior perforation (241), and the tube wall cross section that is provided with described interior perforation (241) is fan-shaped.
6. mixing tube device as claimed in claim 5, is characterized in that, the upper one end away from described suction tude (21) of described outer tube (22) is located in described outer perforation (221).
7. the mixing tube device as described in claim 1-5 any one, is characterized in that, described outer perforation (221) is arranged at the middle part of described outer tube (22).
8. the mixing tube device as described in claim 1-6 any one, is characterized in that, the aperture of described interior perforation (241) is less than the aperture of described outer perforation (221).
9. the mixing tube device as described in claim 1-6 any one, is characterized in that, is also provided with a bowl type water conservancy diversion arc plate (27), upper one end away from described suction tude (21) of outer tube (22) described in the shutoff of described bowl type water conservancy diversion arc plate (27).
10. a SCR catalytic muffler, comprise suction tude (21), mixing tube device, air induction mast (25) and gas outlet (26), described air induction mast (25) and described gas outlet (26) join, it is characterized in that, described mixing tube device is the mixing tube device described in claim 1-9 any one, and described outer tube (22) and the described inner tube (24) of described mixing tube device are inserted the air-inlet cavity of described air induction mast (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320410123.3U CN203452874U (en) | 2013-07-09 | 2013-07-09 | SCR catalyzing silencer and mixing tube device of SCR catalyzing silencer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320410123.3U CN203452874U (en) | 2013-07-09 | 2013-07-09 | SCR catalyzing silencer and mixing tube device of SCR catalyzing silencer |
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| CN203452874U true CN203452874U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320410123.3U Expired - Lifetime CN203452874U (en) | 2013-07-09 | 2013-07-09 | SCR catalyzing silencer and mixing tube device of SCR catalyzing silencer |
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| CN (1) | CN203452874U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103321724A (en) * | 2013-07-09 | 2013-09-25 | 潍柴动力股份有限公司 | SCR catalyzing silencer and hybrid tube device of SCR catalyzing silencer |
| CN105888786A (en) * | 2016-04-13 | 2016-08-24 | 潍柴动力股份有限公司 | Urea mixing device |
| CN106567763A (en) * | 2016-10-21 | 2017-04-19 | 潍柴动力空气净化科技有限公司 | Mixing device applied to engine SCR system, engine SCR system and engine |
| WO2017101628A1 (en) * | 2015-12-18 | 2017-06-22 | 天纳克（苏州）排放系统有限公司 | Engine exhaust after-treatment device |
| CN108979804A (en) * | 2018-07-25 | 2018-12-11 | 河南科技大学 | A kind of vehicle SCR systems and its tail gas keep the temperature mixing arrangement |
| US10215075B2 (en) | 2014-10-24 | 2019-02-26 | Faurecia Emissions Control Technologies, Usa, Llc | Modular mixer inlet and mixer assembly to provide for compact mixer |
| US10287948B1 (en) | 2018-04-23 | 2019-05-14 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
| US10316721B1 (en) | 2018-04-23 | 2019-06-11 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
| US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321724B (en) * | 2013-07-09 | 2016-01-06 | 潍柴动力股份有限公司 | SCR catalytic muffler and mixing tube device thereof |
| CN103321724A (en) * | 2013-07-09 | 2013-09-25 | 潍柴动力股份有限公司 | SCR catalyzing silencer and hybrid tube device of SCR catalyzing silencer |
| US10215075B2 (en) | 2014-10-24 | 2019-02-26 | Faurecia Emissions Control Technologies, Usa, Llc | Modular mixer inlet and mixer assembly to provide for compact mixer |
| WO2017101628A1 (en) * | 2015-12-18 | 2017-06-22 | 天纳克（苏州）排放系统有限公司 | Engine exhaust after-treatment device |
| CN105888786A (en) * | 2016-04-13 | 2016-08-24 | 潍柴动力股份有限公司 | Urea mixing device |
| CN105888786B (en) * | 2016-04-13 | 2018-10-16 | 潍柴动力股份有限公司 | A kind of urea mixing device |
| CN106567763B (en) * | 2016-10-21 | 2019-05-28 | 潍柴动力股份有限公司 | Mixing arrangement, engine SCR system and engine for engine SCR system |
| CN106567763A (en) * | 2016-10-21 | 2017-04-19 | 潍柴动力空气净化科技有限公司 | Mixing device applied to engine SCR system, engine SCR system and engine |
| US10287948B1 (en) | 2018-04-23 | 2019-05-14 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
| US10316721B1 (en) | 2018-04-23 | 2019-06-11 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
| CN108979804A (en) * | 2018-07-25 | 2018-12-11 | 河南科技大学 | A kind of vehicle SCR systems and its tail gas keep the temperature mixing arrangement |
| CN108979804B (en) * | 2018-07-25 | 2021-04-23 | 河南科技大学 | Vehicle SCR system and tail gas heat preservation mixing arrangement thereof |
| US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
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Assignee: WEICHAI POWER AIR PURIFICATION TECHNOLOGY Co.,Ltd. Assignor: WEICHAI POWER Co.,Ltd. Contract record no.: 2015990000854 Denomination of utility model: SCR catalyzing silencer and mixing tube device thereof Granted publication date: 20140226 License type: Exclusive License Record date: 20151015 |
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