CN208106533U - For handling the mixing tube of Vehicular exhaust - Google Patents

For handling the mixing tube of Vehicular exhaust Download PDF

Info

Publication number
CN208106533U
CN208106533U CN201820613346.2U CN201820613346U CN208106533U CN 208106533 U CN208106533 U CN 208106533U CN 201820613346 U CN201820613346 U CN 201820613346U CN 208106533 U CN208106533 U CN 208106533U
Authority
CN
China
Prior art keywords
tube
mixer
inner tube
upstream end
mixing
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.)
Active
Application number
CN201820613346.2U
Other languages
Chinese (zh)
Inventor
杰拉德
杨怡娴
牛牧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faurecia Emissions Control Technologies Development Shanghai Co Ltd
Original Assignee
Faurecia Emissions Control Technologies Development Shanghai Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Faurecia Emissions Control Technologies Development Shanghai Co Ltd filed Critical Faurecia Emissions Control Technologies Development Shanghai Co Ltd
Priority to CN201820613346.2U priority Critical patent/CN208106533U/en
Application granted granted Critical
Publication of CN208106533U publication Critical patent/CN208106533U/en
Priority to DE102019205907.4A priority patent/DE102019205907A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

The utility model relates to a kind of for handling the mixing tube of Vehicular exhaust, including：Outer tube (2)；The inner tube (1) being set in the outer tube (2)；There are gap (5) between said inner tube (1) and the outer tube (2), the upstream end of said inner tube (1) is fixedly connected with the upstream end of the outer tube (2), and the downstream of said inner tube (1) is stretched out from the downstream of the outer tube (2).The mixing tube of the utility model can prevent the drop of the vent gas treatment liquid of inner wall flowing unevaporated, along inner tube from entering the gap between inner and outer tubes, to extend the service life of mixing tube.

Description

For handling the mixing tube of Vehicular exhaust
Technical field
It is the utility model relates to vehicle tai-gas clean-up, in particular to a kind of for handling the mixing tube of Vehicular exhaust.
Background technique
In recent years, people give more and more concerns to atmosphere polluting problem.In densely populated big city, vehicle Exhaust emissions be to cause one of important " contribution " of atmosphere pollution.To reduce the pollutant load being discharged into air, more It is formulated and is implemented successively come stringenter exhaust emission standard.Currently, six discharge standard of state of " most tight in history " has been promulgated, All big enterprises and scientific research institution gradually carry out corresponding R&D work.
It is generally mixed using vent gas treatment liquid (for example, liquid reducing agent) and tail gas in the tail gas clean-up processing of vehicle It closes, to reduce the harmful components such as the nitrogen oxides in tail gas.In the prior art, the mixing tube for handling tail gas generally comprises outside Pipe, inner tube and hybrid blade；Wherein, inner tube is shorter than outer tube, and inner tube is integrated with outer tube secure bond at its both ends, mixes leaf Piece can aggravate the broken of liquid reducing agent (for example, urea liquid), sufficiently to react in inner tube with tail gas.
However, since inner tube in the prior art is shorter than outer tube, so that should be from mixing tube discharge, unevaporated urea Drop may enter the gap between inner and outer tubes, to influence the service performance of mixing tube.
Utility model content
The purpose of the utility model is to provide a kind of for handling the mixing tube of Vehicular exhaust, to solve the above-mentioned prior art The problems in, it prevents the drop of unevaporated vent gas treatment liquid from entering the gap between inner and outer tubes, extends making for mixing tube Use the service life.
The mixing tube for handling Vehicular exhaust of the utility model includes：Outer tube and be set in it is interior in the outer tube Pipe；There are gap between said inner tube and the outer tube, the upstream end of said inner tube is fixedly connected with the upstream end of the outer tube, The downstream of said inner tube is stretched out from the downstream of the outer tube.
Preferably, the inner wall of the downstream of the outer tube is equipped with retention bead, and the retention bead is supported described interior On the outer wall of the downstream of pipe.
Preferably, the upstream end of the outer tube is equipped with the first plug welding hole, and the upstream end of said inner tube is filled in by described first The upstream end plug welding of welding hole and the outer tube is fixed.
Preferably, the mixing tube further includes mixer, and the downstream of the mixer is set in the upstream of said inner tube In end, the upstream end of the mixer with the nozzle of the processing liquid jetting device of vehicle for being aligned.
Preferably, the upstream end of said inner tube is equipped with the second plug welding hole, and the downstream of the mixer passes through described second The upstream end plug welding of plug welding hole and said inner tube is fixed.
Preferably, the side wall of the mixer is equipped at least one opening communicated with the gap.
Preferably, each opening on the side wall of the mixer is equipped with blade on the opening edge of one side, described Internal bend from blade to the mixer so that by it is described opening enter the mixer tail gas caused by the blade Turn.
Preferably, the quantity of the opening is 4 or 8.
Preferably, the mixer is tapered.
The mixing tube of the utility model can prevent it is unevaporated, along inner tube inner wall flow vent gas treatment liquid (for example, Liquid reducing agent, e.g., urea liquid) drop enter the gap between inner and outer tubes, to extend making for tail gas mixing tube Use the service life.In addition, the bypass gas flowed between the inner and outer pipe sections reduces pressure drop；And it is logical to reduce the gas in inner tube The thermal losses of inner pipe wall is crossed, to reduce the risk that vent gas treatment liquid deposits on inner pipe.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the axial, cross-sectional view for the mixing tube for handling Vehicular exhaust that the embodiments of the present invention provide；
Fig. 2 is the perspective view for the mixing tube for handling Vehicular exhaust that the embodiments of the present invention provide；
Fig. 3 is the rearview for the mixing tube for handling Vehicular exhaust that the embodiments of the present invention provide；
Fig. 4 a is the rearview of the first embodiment of mixer；
Fig. 4 b is the side view of the first embodiment of mixer；
Fig. 4 c is the perspective view of the first embodiment of mixer；
Fig. 5 a is the rearview of the second embodiment of mixer；
Fig. 5 b is the side view of the second embodiment of mixer；
Fig. 5 c is the perspective view of the second embodiment of mixer；
Fig. 6 a is the rearview of the 3rd embodiment of mixer；
Fig. 6 b is the side view of the 3rd embodiment of mixer；
Fig. 6 c is the perspective view of the 3rd embodiment of mixer.
Description of symbols：
1- inner tube；2- outer tube；3- mixer；4- handles liquid jetting device；The gap 5-；The first plug welding hole of 6-；7- limit convex It rises；8- opening
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, without constituting limitations of the present invention.
Fig. 1 is provided by the embodiment of the utility model for handling the axial, cross-sectional view of the mixing tube of Vehicular exhaust.Such as Fig. 1 Shown, the mixing tube of the utility model includes outer tube 2 and the inner tube being set in outer tube 21.Preferably, outer tube 2 and inner tube 1 It is cylindrical shape.There are gaps 5 between inner tube 1 and outer tube 2；The gap 5 is preferably uniform, and the tail gas of vehicle mainly passes through interior Pipe 1 is discharged, and also has portion gas to be discharged by the gap 5 between inner tube 1 and outer tube 2.It will be clear to someone skilled in the art that The specific width of gap 5 can be adjusted in a certain range according to system back pressure and mixed performance.
The upstream end of inner tube 1 is fixedly connected with the upstream end of outer tube 2.Importantly, the downstream of inner tube 1 is from outer tube 2 (term " upstream end " and " downstream " are limited according to the flow direction of tail gas, and the arrow in Fig. 1 shows tail for downstream stretching The emission direction of gas)；In this way, the vent gas treatment liquid of inner wall flowing unevaporated, along inner tube 1 can be prevented (for example, liquid is also Former agent, e.g., urea liquid) drop enter the gap 5.Above-mentioned drop can also be prevented to exist by the gas that gap 5 is discharged Enter gap 5 after leaving inner tube 1.
Preferably, the upstream end of outer tube 2 is equipped with the first plug welding hole 6, and the upstream end of inner tube 1 passes through first plug welding hole 6 Upstream end plug welding with outer tube 2 is fixed.The inner wall of the downstream of outer tube 2 is equipped with retention bead 7, and the retention bead 7 is supported On the outer wall of the downstream of inner tube 1.It may be noted that the downstream of outer tube 2 and the downstream of inner tube 1 are not combined as a whole, It only needs for inner tube 1 to be clamped in outer tube 2；This not will lead to outer tube 2 when the downstream of inner tube 1 thermally expands Welding be sewed with the risk of rupture.
It can be described as bypass gas by the gas that the gap 5 between inner tube 1 and outer tube 2 is discharged.In all gas process The case where pipe 1 is discharged is compared, and the presence of bypass gas reduces pressure drop；Moreover, bypass gas can remain the tube wall of inner tube 1 Gas temperature reduces liquid in inner tube 1 also to reduce gas in inner tube 1 by the thermal losses of the tube wall of inner tube 1 Former agent (for example, urea liquid) deposits risk.
As shown in Figure 1 to Figure 3, the tail gas mixing tube of the utility model further includes mixer 3.The downstream end cap of mixer 3 It is located in the upstream end of inner tube 1.Preferably, the upstream end of inner tube 1 is equipped with the second plug welding hole, and the downstream of mixer 3 passes through Second plug welding hole and the upstream end plug welding of inner tube 1 are fixed.
The shape of gaseous mixture 3 can be tapered, in order to which partial tail gas to be introduced to the gap 5 between inner tube 1 and outer tube 2.
The side wall of mixer 3 is equipped at least one opening 8, so that Vehicular exhaust enters inner tube 1 by mixer 3.Often A opening 8 is equipped with blade (attached drawing is not shown) on the opening edge of one side, and the inside of the blade to the mixer is curved Folding, so that causing turn by the blade by the tail gas that the opening 8 enters the mixer 3, so that gas is having just enter into Axis when inner tube 1 around inner tube 1 is rotationally advancing, and then gradually becomes straight flow progresses (as shown in Figure 1).
The upstream end of mixer 3 handles liquid jetting device 4 for being aligned with the nozzle of the processing liquid jetting device 4 of vehicle The vent gas treatment liquid of ejection enters by mixer 3 (spray regime that the broken line triangle in Fig. 1 illustrates in general treatment fluid) Inner tube 1.Vent gas treatment liquid is captured and be distributed along the inner wall of inner tube 1 by gas stream, and the gas mixing for the treatment of fluid and turn Concurrent biochemical decomposition, finally generates harmless gas componant.It will be clear to someone skilled in the art that the quantity and leaf of opening 8 The geometry of piece can need according to the design of system and carry out specific selection.Preferably, 8 quantity of being open is 4 or 8 A, for example, the case where Fig. 4 a to Fig. 4 c and Fig. 6 a to Fig. 6 c show 4 openings, Fig. 5 a to Fig. 5 c shows 8 openings Situation, shape can specifically be set.
The structure, features, and effects of the present invention is described in detail based on the embodiments shown in the drawings, with Upper described is only the preferred embodiment of the utility model, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to Change or equivalent example modified to equivalent change made by conception according to the utility model, still without departing from specification and figure When showing covered spirit, it should be within the protection scope of the present utility model.

Claims (9)

1. a kind of for handling the mixing tube of Vehicular exhaust, which is characterized in that including：
Outer tube (2)；
The inner tube (1) being set in the outer tube (2)；
There are gap (5), the upstream ends and the outer tube (2) of said inner tube (1) between said inner tube (1) and the outer tube (2) Upstream end be fixedly connected, the downstream of said inner tube (1) is stretched out from the downstream of the outer tube (2).
2. mixing tube according to claim 1, which is characterized in that the inner wall of the downstream of the outer tube (2) is equipped with limit Position is raised (7), and the retention bead (7) is supported on the outer wall of the downstream of said inner tube (1).
3. mixing tube according to claim 1, which is characterized in that the upstream end of the outer tube (2) is equipped with the first plug welding hole (6), the upstream end of said inner tube (1) is fixed by first plug welding hole (6) and the upstream end plug welding of the outer tube (2).
4. mixing tube as claimed in any of claims 1 to 3, which is characterized in that the mixing tube further includes mixing The downstream of device (3), the mixer (3) is set in the upstream end of said inner tube (1), the upstream end of the mixer (3) Nozzle for the processing liquid jetting device (4) with vehicle is aligned.
5. mixing tube according to claim 4, which is characterized in that the upstream end of said inner tube (1) is equipped with the second plug welding hole, The downstream of the mixer (3) is fixed by second plug welding hole and the upstream end plug welding of said inner tube (1).
6. mixing tube according to claim 5, which is characterized in that the side wall of the mixer (3) is equipped at least one It is open (8).
7. mixing tube according to claim 6, which is characterized in that each opening (8) on the side wall of the mixer (3) On the opening edge of one side be equipped with blade, internal bend from the blade to the mixer (3) so that being opened described in The tail gas that mouth (8) enters the mixer (3) causes turn by the blade.
8. mixing tube according to claim 7, which is characterized in that the quantity of the opening (8) is 4 or 8.
9. mixing tube according to claim 4, which is characterized in that the mixer (3) is tapered.
CN201820613346.2U 2018-04-26 2018-04-26 For handling the mixing tube of Vehicular exhaust Active CN208106533U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201820613346.2U CN208106533U (en) 2018-04-26 2018-04-26 For handling the mixing tube of Vehicular exhaust
DE102019205907.4A DE102019205907A1 (en) 2018-04-26 2019-04-25 Mixing pipe for the treatment of vehicle exhaust

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820613346.2U CN208106533U (en) 2018-04-26 2018-04-26 For handling the mixing tube of Vehicular exhaust

Publications (1)

Publication Number Publication Date
CN208106533U true CN208106533U (en) 2018-11-16

Family

ID=64117288

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820613346.2U Active CN208106533U (en) 2018-04-26 2018-04-26 For handling the mixing tube of Vehicular exhaust

Country Status (2)

Country Link
CN (1) CN208106533U (en)
DE (1) DE102019205907A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108374708A (en) * 2018-04-26 2018-08-07 佛吉亚排气控制技术开发(上海）有限公司 Mixing tube for handling Vehicular exhaust
CN111531062A (en) * 2020-04-14 2020-08-14 大连理工大学 Automatic turning device of automobile exhaust mixing pipe lobe
US11891937B2 (en) 2018-07-03 2024-02-06 Cummins Emission Solutions Inc. Body mixing decomposition reactor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022121456A1 (en) * 2022-08-25 2024-03-07 Purem GmbH Mixing arrangement for an exhaust system of an internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108374708A (en) * 2018-04-26 2018-08-07 佛吉亚排气控制技术开发(上海）有限公司 Mixing tube for handling Vehicular exhaust
US11891937B2 (en) 2018-07-03 2024-02-06 Cummins Emission Solutions Inc. Body mixing decomposition reactor
CN111531062A (en) * 2020-04-14 2020-08-14 大连理工大学 Automatic turning device of automobile exhaust mixing pipe lobe
CN111531062B (en) * 2020-04-14 2021-11-19 大连理工大学 Automatic turning device of automobile exhaust mixing pipe lobe

Also Published As

Publication number Publication date
DE102019205907A1 (en) 2019-11-28

Similar Documents

Publication Publication Date Title
CN208106533U (en) For handling the mixing tube of Vehicular exhaust
EP1770253B1 (en) Exhaust purification apparatus for engine
EP1712751B1 (en) Static mixer
CN104033218B (en) For the room that becomes a mandarin of the catalyst converter of emission control system
US9482132B2 (en) Gaseous reductant delivery devices and systems
CN108374708A (en) Mixing tube for handling Vehicular exhaust
US7793490B2 (en) Exhaust gas system for diesel vehicles with an SCR catalytic converter
EP2818656A1 (en) Exhaust gas purification device
US8468802B2 (en) Exhaust gas system
US10954841B2 (en) Diesel exhaust fluid mixing
KR101848802B1 (en) Modular mixer for exhaust assembly
US11193412B2 (en) Automotive exhaust aftertreatment system
US9133744B2 (en) Vehicle exhaust gas treatment apparatus
DE102007048560A1 (en) Device for post-treatment of exhaust gases of a lean-running internal combustion engine
JP2008144644A (en) Exhaust emission control device for internal combustion engine
CN104653259A (en) Exhaust gas aftertreatment device
CN107980078A (en) Exhaust aftertreatment device for the internal combustion engine of automobile
CN109854344A (en) Gas exhaust piping for the vehicles
US20090139217A1 (en) Exhaust gas temperature reduction device for aftertreatment devices
US8241578B2 (en) Catalytic apparatus for vehicle
JP2006272150A (en) Gas mixer and gas mixing method
EP2075051B1 (en) Apparatus for reducing nitrogen oxide in exhaust pipes
CN203742729U (en) Catalytic converter assembly and exhaust system
CN105452624A (en) Axial flow atomization module
CN109026307A (en) A kind of exhaust treatment system and its control device, control method

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant