CN103867268B - Particle trapper tail gas heating device - Google Patents
Particle trapper tail gas heating device Download PDFInfo
- Publication number
- CN103867268B CN103867268B CN201410132940.6A CN201410132940A CN103867268B CN 103867268 B CN103867268 B CN 103867268B CN 201410132940 A CN201410132940 A CN 201410132940A CN 103867268 B CN103867268 B CN 103867268B
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- CN
- China
- Prior art keywords
- shell
- air inlet
- inlet duct
- tail gas
- exhaust manifolds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Abstract
Particle trapper tail gas heating device belongs to After-treatment technics technical field, housing I of the present invention, forms a cavity between shell II and preprocessor housing; The outlet end of air inlet duct II communicates with the front portion of cavity; The entry end of exhaust manifolds II communicates with the rear portion of cavity; The entry end of air inlet duct I communicates with the venturi front portion of the connecting tube of venturi tube structure; It is contrary that opening direction and the tail gas of air inlet duct I carry out flow path direction; The outlet end of exhaust manifolds I communicates with the venturi place of the connecting tube of venturi tube structure; It is consistent that outlet end opening direction and the tail gas of exhaust manifolds I carry out flow path direction; The present invention utilizes the heat of motor exhaust to heat preprocessor, reduces temperature gradient when particularly regenerating in particle trapper using process; Can prevent the situation causing carrier to damage because of large temperature gradient from occurring; Utilize motor exhaust to heat preprocessor, make the ignition of oxidation catalyst rapider, reduce gas pollutant discharge.
Description
Technical field
The invention belongs to After-treatment technics technical field, be specifically related to a kind of device utilizing motor exhaust to heat particle trapper.
Background technique
In internal-combustion engine (particularly diesel engine), fuel combustion will produce Particulate Emission.Research shows that exhaust gases of internal combustion engines Particulate Emission has larger adverse effect to environment and health.In recent years, PM2.5 and haze become the topic that the domestic common people are extremely concerned about.According to the survey, Global Auto recoverable amount in 2011 more than 1,000,000,000, China possesses total amount at Motor Vehicle in 2012 and reaches 2.4 hundred million.Under so large radix, Motor Vehicle accounts for fine-grained a big chunk to the particle mass of air venting every year.So restricting vehicle Particulate Emission is for alleviating environmental pollution, improve environment for human survival very important.From the particle trapper invention eighties so far, it is solve the most effective means of automobile Particulate Emission (can trap the particulate more than 90% in tail gas) always.But due to its by micro particle catching in the carrier, along with the increase of micro particle catching amount, exhaust back pressure also increases.So need periodically to its regeneration.Through years of researches, global each experts and scholars propose various regeneration method.But regeneration is the technological difficulties of particle trapper always.Such as, regeneration opportunity is determined, regeneration temperature controls, regeneration rate controls and regeneration temperature gradient control etc.Control for regeneration temperature gradient concentrates on mostly to be optimized Strategy for Regeneration Control and improves in particle trapper entrance flow uniformity.And direct the contact with external environment of particle trapper housing causes wall surface temperature lower, form relatively large temperature gradient.In addition in extreme conditions, the huge temperature gradient that particle trapper is subject to Quench generation will cause carrier to occur fracture, directly cause particle trapper to lose efficacy.
Summary of the invention
The object of the invention is to solve above-mentioned particle trapper using process particularly regenerative process Problems existing.Design a kind of device utilizing engine section tail gas to heat preprocessor wall.
The present invention is by preprocessor housing 1, circular asbestos washer I 3, shell I 4, oxidation catalyst 5, particle trapper 6, exhaust manifolds II 7, circular asbestos washer II 8, pipe joint II 10, exhaust manifolds I 11, the connecting tube 12 of venturi tube structure, air inlet duct I 13, pipe joint I 14, air inlet duct II 16, circular asbestos washer III 19, shell II 20, strip asbestos washer I 21, strip asbestos washer II 22 forms, wherein oxidation catalyst 5 and particle trapper 6 are placed in preprocessor housing 1, preprocessor housing 1 outlet end is connected with connecting tube 12 bolt of venturi tube structure through circular asbestos washer III 19, shell I 4 and shell II 20 2 joint are respectively equipped with strip asbestos washer I 21 and strip asbestos washer II 22, and are connected by bolt, shell I 4 and shell II 20 are provided with circular asbestos washer I 3 with joint, preprocessor housing shirt rim I 2, and are connected by bolt, shell I 4 and shell II 20 are provided with circular asbestos washer II 8 with joint, preprocessor housing shirt rim II 9, and are connected by bolt, shell I 4, between shell II 20 and preprocessor housing 1, form a cavity 18, the outlet end of air inlet duct I 13 is connected through pipe joint I 14 with the entry end of air inlet duct II 16, the outlet end of exhaust manifolds II 7 is connected through pipe joint II 10 with the entry end of exhaust manifolds I 11, the outlet end of air inlet duct II 16 tangentially communicates with the front portion of cavity 18 through shell I 4 top, the entry end of exhaust manifolds II 7 tangentially communicates with the rear portion of cavity 18 through shell I 4 top, the entry end of air inlet duct I 13 communicates with venturi 23 front portion of the connecting tube 12 of venturi tube structure, it is contrary that opening direction and the tail gas of air inlet duct I 13 carry out flow path direction, the outlet end of exhaust manifolds I 11 communicates with venturi 23 place (i.e. the narrowest place of the connecting tube 12 of venturi tube structure) of the connecting tube 12 of venturi tube structure, it is consistent that outlet end opening direction and the tail gas of exhaust manifolds I 11 carry out flow path direction.
Thermal-protective coating I 15 is provided with outside described air inlet duct I 13 and air inlet duct II 16.
Thermal-protective coating II 17 is provided with outside described shell I 4 and shell II 20.
When engine operation, tail gas flows in outlet pipe, through the tail gas of oxidation catalyst 5 and particle trapper 6, under the acting in conjunction of the pressure reduction formed in inertial flow and Venturi tube, enter in cavity 18 through air inlet duct I 13, air inlet duct II 16, air-flow enters the connecting tube 12 of venturi tube structure after the flowing of cavity 18 internal spiral through exhaust manifolds I 11, exhaust manifolds II 7.Thermal-protective coating I 15 and the shell I 4 of air inlet duct I 13, air inlet duct II 16 tube wall effectively reduce the heat loss of tail gas with the thermal-protective coating II 17 of shell II 20 outer wall, utilize the heat in tail gas to heat preprocessor housing 1 to greatest extent.
Beneficial effect of the present invention is: utilize the heat of motor exhaust to heat preprocessor, reduces temperature gradient when particularly regenerating in particle trapper using process, prevents the situation causing carrier to damage because of large temperature gradient from occurring.
Utilize motor exhaust to heat preprocessor, make the ignition of oxidation catalyst rapider, reduce gas pollutant discharge.
Accompanying drawing explanation
Fig. 1 is the plan view of particle trapper tail gas heating device
Fig. 2 is the plan view of particle trapper tail gas heating device
Fig. 3 is the left view of particle trapper tail gas heating device
Fig. 4 is the partial view of A in Fig. 1
Wherein: 1. circular asbestos washer III 20. shell II 21. strip asbestos washer I 22. strip asbestos washer II 23. venturi of connecting tube 13. air inlet duct I 14. pipe joint I 15. thermal-protective coating I 16. air inlet duct II 17. thermal-protective coating II 18. cavity 19. of the circular asbestos washer I 4. in preprocessor housing 2. preprocessor housing shirt rim I 3. shell I 5. oxidation catalyst 6. particle trapper 7. exhaust manifolds II 8. circular asbestos washer II 9. preprocessor housing shirt rim II 10. pipe joint II 11. exhaust manifolds I 12. venturi tube structure
Embodiment
The structure and working principle of particle trapper tail gas heating device is further illustrated below in conjunction with accompanying drawing.
The present invention is made up of the connecting tube 12 of preprocessor housing 1, circular asbestos washer I 3, shell I 4, oxidation catalyst 5, particle trapper 6, exhaust manifolds II 7, circular asbestos washer II 8, pipe joint II 10, exhaust manifolds I 11, venturi tube structure, air inlet duct I 13, pipe joint I 14, air inlet duct II 16, circular asbestos washer III 19, shell II 20, strip asbestos washer I 21, strip asbestos washer II 22, shell I 4, forms a cavity 18 between shell II 20 and preprocessor housing 1;
Air inlet duct I 13 entrance is just to exhaust gas flow direction.Partial tail gas utilizes inertia to enter the above path.And be positioned at the constriction of the connecting tube 12 of venturi tube structure because of the outlet of exhaust manifolds I 11, can vacuum be formed in reducing position.Therefore, pressure reduction will be formed between air inlet duct I 13 and exhaust manifolds I 11.Partial tail gas utilizes the effect of pressure reduction to enter air inlet duct I 13, and along with extraction flow increase, in path, exhaust flow is also larger.Because air inlet duct II 16 and shell I 4 are for be tangentially connected, tail gas spirally will flow in cavity 18.Ensure the uniform stream flowing of whole cavity 18, wall is heated properly.
In traditional vent systems, no matter be oxidation catalyst or particle trapper, the core temperature of their carriers is relative to higher with the bed temperature of body contact.This phenomenon can have influence on their working life and utilization efficiency to a certain extent.Traditional oxidation catalyst always central position first reaches initiation temperature, after oxidation heat liberation after a while, the bed temperature contacted with wall just reaches initiation temperature, now, this part carrier just starts effective to gas pollutant: carbon monoxide, unburned hydrocarbons carry out oxidation.The present invention utilizes tail gas to heat carrier wall, can improve the bed temperature contacted with wall, and its time reaching initiation temperature will shorten, and improve the vent gas treatment efficiency of oxidation catalyst 5.
There is flow uniformity problem in particle trapper 6, cause bed temperature skewness in trapping process.The particulate loading that the carrier that particle trapper 6 contacts with wall simultaneously traps is relatively less compared with central position, and during regeneration, central position temperature apparently higher than wall surface temperature, will form larger temperature gradient.In addition there is larger heat loss in wall.Comprehensive above reason causes traditional particle trapper to occur larger temperature gradient.Utilize the present invention, tail gas higher for portion temperature is incorporated into the path that the cavity 18 between air inlet duct I 13, air inlet duct II 16, exhaust manifolds I 11, exhaust manifolds II 7 and shell I 4, shell II 20, preprocessor housing 1 formed from the connecting tube 12 of venturi tube structure, the wall of particle trapper 6 is heated, reduce the temperature gradient of particle trapper 6 carrier, prevent because large temperature gradient causes carrier to occur damaging.
Claims (3)
1. a particle trapper tail gas heating device, by preprocessor housing (1), circular asbestos washer I (3), shell I (4), oxidation catalyst (5), particle trapper (6), exhaust manifolds II (7), circular asbestos washer II (8), pipe joint II (10), exhaust manifolds I (11), the connecting tube (12) of venturi tube structure, air inlet duct I (13), pipe joint I (14), air inlet duct II (16), circular asbestos washer III (19), shell II (20), strip asbestos washer I (21), strip asbestos washer II (22) forms, wherein oxidation catalyst (5) and particle trapper (6) are placed in preprocessor housing (1), preprocessor housing (1) outlet end is connected with connecting tube (12) bolt of venturi tube structure through circular asbestos washer III (19), it is characterized in that shell I (4) and shell II (20) two joint are respectively equipped with strip asbestos washer I (21) and strip asbestos washer II (22), and connected by bolt, shell I (4) and shell II (20) are provided with circular asbestos washer I (3) with joint, preprocessor housing shirt rim I (2), and are connected by bolt, shell I (4) and shell II (20) are provided with circular asbestos washer II (8) with joint, preprocessor housing shirt rim II (9), and are connected by bolt, shell I (4), between shell II (20) and preprocessor housing (1), form a cavity (18), the outlet end of air inlet duct I (13) is connected through pipe joint I (14) with the entry end of air inlet duct II (16), the outlet end of exhaust manifolds II (7) is connected through pipe joint II (10) with the entry end of exhaust manifolds I (11), the outlet end of air inlet duct II (16) tangentially communicates with the front portion of cavity (18) through shell I (4) top, the entry end of exhaust manifolds II (7) tangentially communicates with the rear portion of cavity (18) through shell I (4) top, the entry end of air inlet duct I (13) communicates with venturi (23) front portion of the connecting tube (12) of venturi tube structure, it is contrary that opening direction and the tail gas of air inlet duct I (13) carry out flow path direction, the outlet end of exhaust manifolds I (11) communicates with venturi (23) place of the connecting tube (12) of venturi tube structure, it is consistent that outlet end opening direction and the tail gas of exhaust manifolds I (11) carry out flow path direction.
2., by particle trapper tail gas heating device according to claim 1, it is characterized in that being provided with thermal-protective coating I (15) outside described air inlet duct I (13) and air inlet duct II (16).
3., by particle trapper tail gas heating device according to claim 1, it is characterized in that being provided with thermal-protective coating II (17) outside described shell I (4) and shell II (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132940.6A CN103867268B (en) | 2014-04-02 | 2014-04-02 | Particle trapper tail gas heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132940.6A CN103867268B (en) | 2014-04-02 | 2014-04-02 | Particle trapper tail gas heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867268A CN103867268A (en) | 2014-06-18 |
| CN103867268B true CN103867268B (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410132940.6A Expired - Fee Related CN103867268B (en) | 2014-04-02 | 2014-04-02 | Particle trapper tail gas heating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103867268B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630359A (en) * | 2018-06-21 | 2019-12-31 | 宝沃汽车（中国）有限公司 | Three way catalyst converter and vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757116B (en) * | 2018-05-21 | 2023-09-12 | 东风商用车有限公司 | Active regeneration particle catcher and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0266932A1 (en) * | 1986-10-20 | 1988-05-11 | Ford Motor Company Limited | Electrical ignition system for regeneration of a particulate trap |
| JPH05168834A (en) * | 1991-12-18 | 1993-07-02 | Nippon Soken Inc | Device for purifying fine particle in exhaust gas |
| CN101059095A (en) * | 2007-05-25 | 2007-10-24 | 吉林大学 | Non-vehicle-mounted type diesel engine particle catcher regeneration device |
| CN101694173A (en) * | 2009-10-16 | 2010-04-14 | 徐和平 | Exhaust purifier of diesel engine |
| CN203742733U (en) * | 2014-04-02 | 2014-07-30 | 吉林大学 | Tail-gas heating device for particle trap |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4624459B2 (en) * | 2008-11-25 | 2011-02-02 | トヨタ自動車株式会社 | Exhaust manifold |
-
2014
- 2014-04-02 CN CN201410132940.6A patent/CN103867268B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0266932A1 (en) * | 1986-10-20 | 1988-05-11 | Ford Motor Company Limited | Electrical ignition system for regeneration of a particulate trap |
| JPH05168834A (en) * | 1991-12-18 | 1993-07-02 | Nippon Soken Inc | Device for purifying fine particle in exhaust gas |
| CN101059095A (en) * | 2007-05-25 | 2007-10-24 | 吉林大学 | Non-vehicle-mounted type diesel engine particle catcher regeneration device |
| CN101694173A (en) * | 2009-10-16 | 2010-04-14 | 徐和平 | Exhaust purifier of diesel engine |
| CN203742733U (en) * | 2014-04-02 | 2014-07-30 | 吉林大学 | Tail-gas heating device for particle trap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630359A (en) * | 2018-06-21 | 2019-12-31 | 宝沃汽车（中国）有限公司 | Three way catalyst converter and vehicle |
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| Publication number | Publication date |
|---|---|
| CN103867268A (en) | 2014-06-18 |
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| C10 | Entry into substantive examination | ||
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Granted publication date: 20160217 Termination date: 20170402 |