CN207813720U - Vehicle exhaust post-processes assembly - Google Patents
Vehicle exhaust post-processes assembly Download PDFInfo
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- CN207813720U CN207813720U CN201721684345.9U CN201721684345U CN207813720U CN 207813720 U CN207813720 U CN 207813720U CN 201721684345 U CN201721684345 U CN 201721684345U CN 207813720 U CN207813720 U CN 207813720U
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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
- 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
Abstract
The utility model is related to a kind of vehicle exhausts to post-process assembly,Including at least two processing units,Each processing unit includes processing unit shell,Assembly and connection structure between two processing unit shells includes connecting pin,Gasket seal,Connecting tube,Anchor ear,The connecting pin is that a processing unit shell in the two processing units shell extends out extension,The connecting tube is arranged from another processing unit shell in the two processing units shell,Expanding part that end with opposite another processing unit shell extends out and from the tapered choke in the expanding part end,The outside of the choke and the inside for extending out extension are face to face,And gasket seal described in sandwiched,The anchor ear is embraced in the outside for extending out extension and the outside of the expanding part,The outside and described extend out for forcing the choke offset on the inside of extension,The connecting pin and the connecting tube to be held tightly.
Description
Technical field
The utility model is related to vehicle motor emission control fields more particularly to a kind of vehicle exhaust to post-process assembly.
Background technology
In recent years, fuel economy regulation limitation increasingly stringent for the regulation of the discharge of vehicle and oil consumption, stringent, needs to start
Machine fully burns, and clean-burning cost is that oxynitrides content increases in exhaust, this is limited by stringent emission regulation again
System, in European " Europe VI " diesel engine emissions standard, diesel engine automobile particulate emission should be less than 10mg/kwh, nitrogen oxides
Discharge should be less than 460mg/kwh.Therefore, in increasingly strict discharge and oil consumption standard and Engine Downsizing, light-weighted
Under it is required that, exhaust after treatment system should also make corresponding improvement, such as increase engine exhaust-gas recirculating system, but this to start
The temperature of machine reduces, and part fuel oil is not sufficiently combusted, it is unburned hydrocarbon and it is granular material discharged increase, therefore, increasingly strict
With under oil consumption standard and Engine Downsizing, light-weighted requirement, exhaust after treatment system also must be improved accordingly for discharge,
To adapt to government regulations mandate.
The vehicle exhaust after-treatment system pipeline of the prior art is longer, in order to which discharge air lift is empty for adequately mixing
Between, preferable uniformity is reached in pipeline, is conducive to exhaust and is come into full contact with catalyst.But due to for meet " Europe VI " diesel oil
The gas recirculation system of engine emission standard setting so that delivery temperature further decreases, if exhaust is still to by longer
Pipeline, may result in selective catalytic reduction reaction temperature not enough and bring bigger to choose to solving urea crystals
War, causes nitrogen oxides treatment ineffective.Therefore, it to meet discharge and the oil consumption requirement of vehicle, needs to develop a kind of structure
It is compact, exhaust uniformity is taken into account, improves heat insulation effect as far as possible to improve the exhaust aftertreatment assembly apparatus of urea crystals problem.
Utility model content
The purpose of this utility model is to provide a kind of vehicle exhausts to post-process assembly, with compact-sized, mixing is equal
Even advantage.
Assembly is post-processed according to a kind of vehicle exhaust of the utility model one side comprising：
A kind of vehicle exhaust post-processing assembly, including at least two processing units, each processing unit include processing unit shell, two processing
Assembly and connection structure between portion's shell includes connecting pin, gasket seal, connecting tube, anchor ear, and the connecting pin is at described two
A processing unit shell in reason portion shell extends out extension, and the connecting tube is from another in the two processing units shell
It is arranged on processing unit shell, the expanding part that there is the end of opposite another processing unit shell to extend out and from expanding part end
Tapered choke, the outside of the choke and the inside for extending out extension is held face to face, and to be sealed described in sandwiched
Gasket, the anchor ear are embraced in the outside for extending out extension and the outside of the expanding part, and the outer of the choke is forced
Side offsets with described extend out on the inside of extension, and the connecting pin and the connecting tube are held tightly.
In one embodiment, the connecting tube is welded in another described processing unit shell or the connecting tube one
It is body formed in another described processing unit shell.
In one embodiment, the connecting tube is welded in another described processing unit shell, each processing unit shell
Outer wall be both provided with heat insulation structural, the heat insulation structural includes heat-barrier material, heat insulation shell, the heat-barrier material with it is corresponding
Processing unit shell is in direct contact, and the heat insulation shell surrounds the heat-barrier material.
In one embodiment, the heat insulation structural further includes reinforcing rib, and the reinforcing rib is respectively arranged at described heat-insulated
Between the inner wall of shell and the outer wall of the processing unit shell.
In one embodiment, the heat insulation shell include by heat-barrier material carry out circumferential seal heat shield, will be heat-insulated
Material carries out the baffle of axial seal, and the heat shield is by roll of steel plate around being welded.
In one embodiment, a processing unit of at least two processing units is particle trap, the particle trap
Further include particulate filter, liner, steel wire ring, baffle ring, the liner is arranged in the particulate filter and the particle trap
Processing unit shell between, the baffle ring is fixed on the inner peripheral surface of the processing unit shell of the particle trap, and the steel wire ring is solid
It is scheduled on one end of the baffle ring, the end face of the one end in the particulate filter downstream side abuts in the axial direction with the steel wire ring,
There is gap in the axial direction with the steel wire ring in the liner.
In one embodiment, the vehicle exhaust post-processing assembly includes：
Intake section, the exhaust generated for receiving vehicle motor burning；
First processing unit, including the first processing unit shell；
Second processing portion is arranged in the first processing unit downstream side, including second processing portion shell；
Third processing unit is arranged in second processing portion downstream side, including third processing unit shell；And
Outlet portion, for exhaust after treatment to be discharged；
Wherein, the adjacent processing unit shell in the first processing unit shell, second processing portion shell, third processing unit shell
At least part of body is removably assembled to be connected by the assembly and connection structure.
In one embodiment, the intake section includes end cone, partition board, and the end cone includes air inlet, for receiving vehicle
The exhaust that engine combustion generates, the partition board includes air-flow porose area, and the airflow hole area distribution is useful for what exhaust passed through
Airflow hole.
In one embodiment, the end cone include along the end cone big end it is circumferentially distributed at least two at from medial surface
The interior protuberance of protrusion；The partition board further includes bonding pad, and the bonding pad is included in the air-flow porose area circumferential edge radially
Extend out and axially projecting bonding pad anchor ring, and in the bonding pad anchor ring it is circumferentially distributed at least two at it is axially projecting outer
Protrusion, the bonding pad anchor ring are abutted with the interior protuberance axial, and the male part offsets with the interior protuberance circumferentially.
In one embodiment, the intake section, the outlet portion are configured to side and go out or hold into side into either side is brought out
Into bringing out or hold into side；The third processing unit further includes ammoxidation catalyst；First processing unit includes that oxidation is urged
Agent, the second processing portion includes particulate filter, and the third processing unit includes mixer；In the correspondence oxidation catalysis
On the first processing unit shell between agent downstream side and the particulate filter upstream side, under the corresponding particulate filter
It swims on the third processing unit shell between side and the mixer upstream side, is respectively arranged with pressure sensor air hatch；
First processing between the intake section, the corresponding oxidation catalyst downstream side and the particulate filter upstream side
The third processing unit shell on portion's shell, between the corresponding particulate filter downstream side and the mixer upstream side
Upper, outlet portion is provided with temperature sensor air hatch；The intake section, the outlet portion are provided with nitrous oxides concentration sensing
Device air hatch；The first processing unit shell between the correspondence oxidation catalyst downstream side and the particulate filter upstream side
Or the outlet portion is provided with granule density sensor air hatch.
The progress place of the utility model is, ensures the module of exhaust assembly by being detachably connected between shell
Change, the end cone structure of intake section is to ensure the uniformity of exhaust, use the connection of connecting tube and anchor ear in the junction of shell
Structure so that compact-sized, add heat insulation structural and set with ensureing that gas temperature makes nitrogen oxides fully be reacted etc. by housing exterior walls
Meter so that the exhaust aftertreatment assembly of the use of the new type is taken into account and is processed under the premise of meeting increasingly harsh discharge standard
This, assembly technology and the matching for adapting to arrangement space.
Description of the drawings
The above and other feature, property and advantage of the utility model will be by with reference to the accompanying drawings and examples
Description and become readily apparent from, wherein：
Fig. 1 is the vertical view that assembly is post-processed according to the vehicle exhaust of one embodiment of the utility model.
Fig. 2 is the internal structure chart that assembly is post-processed according to the vehicle exhaust of one embodiment of the utility model.
Fig. 3 is enlarged view at the A of Fig. 2.
Fig. 4 is the connecting pipe structure figure for vehicle exhaust system according to another embodiment of the utility model.
Fig. 5 is enlarged view at the B of Fig. 2.
Fig. 6 is the structure chart for the end cone that assembly is post-processed according to the vehicle exhaust of one embodiment of the utility model.
Fig. 7 is the structure chart for the partition board that assembly is post-processed according to the vehicle exhaust of one embodiment of the utility model.
Fig. 8 is axially fixed between end cone and partition board according to the vehicle exhaust of one embodiment of the utility model post-processing assembly
The structure chart of position.
Fig. 9 is circumferentially fixed between end cone and partition board according to the vehicle exhaust of one embodiment of the utility model post-processing assembly
The structure chart of position.
Figure 10 is the structure of steel wire ring and baffle ring that assembly is post-processed according to the vehicle exhaust of one embodiment of the utility model
Figure.
Figure 11 is the view for certain angle that assembly is post-processed according to the vehicle exhaust of another embodiment of the utility model.
Figure 12 is the internal structure chart that assembly is post-processed according to the vehicle exhaust of the utility model another embodiment.
Specific implementation mode
With reference to specific embodiments and the drawings, the utility model is described in further detail, elaborates in the following description
More details are in order to fully understand the utility model, but the utility model obviously can be different from what this was described with a variety of
Other manner is implemented, and those skilled in the art can be without prejudice to the utility model connotation according to practical application feelings
Condition makees similar popularization, deduces, therefore should not limit the scope of protection of the utility model with the content of this specific embodiment.
It should be noted that attached drawing is only as an example, should not be in this, as the guarantor to the utility model actual requirement
Shield range is construed as limiting.
Fig. 2 shows vertical views and internal structure that the vehicle exhaust of one embodiment of the utility model post-processes assembly by Fig. 1-.
In the course of work, combustion in IC engine generates exhaust, is discharged by pipeline, and pipeline passes through ring flange and exhaust aftertreatment assembly 1
Intake section 2 connects, and intake section 2 includes end cone 3, partition board 4；Exhaust by intake section 2 enter post-processing assembly 1 after, end cone 3,
Reach preferable mixing uniformity after carrying out sufficient air motion in the space of partition board 4, enters the first processing unit 5 later and carry out
Unburned hydrocarbon, carbon monoxide oxidation processes, then, exhaust enter second processing portion 6 and carry out particle filtering, next, exhaust
The reduction treatment of nitrogen oxides is carried out into third processing unit 7, finally passes through outlet portion 13 and air is discharged.
After exhaust enters in the air inlet from end cone 3, fully flowed in the space that end cone 3 is formed with partition board 4
After flow through partition board 4, shown by Computer simulation results, it is 0.95 to be vented the mixture homogeneity in the space of end cone 3 and partition board 4
More than, the requirement to being vented the uniformity in subsequent processing is met, therefore being vented need not be such as the exhaust aftertreatment of the prior art
Assembly equally just reaches uniform mixed effect by very long air inlet pipeline, and the design of end cone and partition board has reached in limited sky
Interior realization is vented mixed uniformly purpose, shortens system length, improves the compactedness of system.As shown in fig. 6, end cone 3
Big end it is circumferentially distributed have the interior protuberance 31 protruded from medial surface, as shown in fig. 7, partition board 4 include air-flow porose area 41, bonding pad
42, exhaust flows through partition board 4 by the airflow hole 411 of air-flow porose area 41, and bonding pad 42 is included in 41 circumferential edge edge of air-flow porose area
Radial direction extends out and axially projecting bonding pad anchor ring 420, and in the circumferentially distributed axially projecting evagination of bonding pad anchor ring 420
Portion 421.As shown in figure 8, in assembling, the bonding pad anchor ring 420 of partition board 4 and the inner wall of the interior protuberance 31 of end cone 3 lean on proximal cone 3
The side of radial edges axially abuts, and realizes the axially position of partition board 4；Meanwhile as shown in figure 9, male part 421 and interior protuberance
31 inner walls offset circumferentially, realize the circumferentially positioned of partition board, and to realize axial and circumferentially positioned function, bonding pad 42 is distributed with
Interior protuberance 31 at two are at least distributed in male part 421 at least two, end cone 3, and such as Fig. 6, Fig. 7, two evaginations are distributed in junction 42
Interior protuberance 31 at three are distributed in portion 421, end cone 3.The design of the location structure so that exhaust aftertreatment assembly engine assembly,
The vibration generated in vehicle general assembly and vehicle traveling does not interfere with opposite position of the end cone 3 with partition board 4 in initial assembly
It sets, ensure that is formed between end cone 3 and partition board 4 is used to be vented mixed spatial stability, to ensure that exhaust is uniformly mixed
Effect.
In conjunction with Fig. 2, exhaust enters the first processing unit 5 after partition board 4, and the oxidation processes being exhausted will be in exhaust
The ingredients such as unburned hydrocarbon, carbon monoxide be oxidized to carbon dioxide and water under the action of oxidation catalyst 51.Oxidation catalysis
Agent 51 is by 52 support of liner, the connection structure of the first processing unit shell 53 and second processing portion shell 63 as shown in Figure 2 and Figure 3,
First processing unit shell 53 extends out close to one end of second processing portion shell 63 and extends to connecting pin 531, second processing portion shell
63 are provided with connecting tube 631 close to one end of the first processing unit shell 53, and connecting tube 631 has opposite second processing portion shell 63
The expanding part 6311 that extends out of end and extend from the big end of expanding part 6311 and tapered choke 6312, choke 6312
Outside and connecting pin 531 inside face to face, and sandwiched gasket seal 10 forms surface seal structure, after ensureing
Manage the sealing of assembly；Anchor ear 11 embraces the outside in connecting pin 531 and the outside of expanding part 6311, forces the outer of choke 6312
The inside of side and connecting pin 531 offsets, and connecting pin 531 and connecting tube 631 are held tightly, realizes the first processing unit shell 53 and the
Two processing unit shells 63 are detachably connected.Connecting tube 631 can be welded on the outer of second processing portion shell 63 as shown in Figure 3
Wall, so required 631 length of connecting tube are shorter；Another embodiment of the utility model that can also be as shown in Figure 4, connecting tube
631 are integrally formed with second processing portion shell 63, so need to consume more connection tube material, but make the connection between shell
It is more stable.For the connection structure for the connection of common flange plate structure, the connection length being overlapped between shell is longer,
So as to shorten the length of entire post-processing assembly so that device is compact, meanwhile, flange is replaced using anchor ear 11 simple in structure
Disk, the manufacturing cost of the post-processing assembly 1 also reduced.
With continued reference to Fig. 2, exhaust carries out particle after the oxidation processes of the first processing unit 5, into second processing portion 6
Processing.Second processing portion 6 includes particulate filter 61.Exhaust passes axially through particulate filter 61, in exhaust aftertreatment assembly 1
After working long hours, the particle of depositing dosed quantities is hindered the air motion of exhaust by particulate filter 61, keeps exhaust back pressure aobvious
It writes and increases, therefore, such as Fig. 1, need first between 61 upstream side of 51 downstream side of oxidation catalyst and particulate filter to handle
On third processing unit shell 73 on portion's shell 53, between corresponding 61 downstream side of particulate filter and 71 upstream side of mixer, point
Not She Zhi the air hatch 54,75 of pressure sensor will for detecting exhaust back pressure by the pressure difference before and after second processing portion 6
The pressure difference of exhaust back pressure is timely feedbacked to control system, if pressure difference is excessive, needs to clear up or replace particulate filter 61.
Meanwhile axial displacement occurs for the excessive particulate filter 61 that likely results in of exhaust back pressure, influences the stability for post-processing assembly.Such as
Shown in Fig. 5, particulate filter 61 is by 65 support of liner, and baffle ring 64 is fixed on the inner peripheral surface of second processing portion shell 63, in particle
Filter 61 has been disposed adjacent steel wire ring 62 close to the end face of one end of third processing unit 7, and the steel wire ring is twined by multiple steel wires
Around into cross sectional shape includes but not limited to rectangle shown in fig. 5, can also be the other shapes such as square.Steel wire ring 62
It is abutted in the axial direction close to the end face of one end of third processing unit shell 73 with particulate filter 61, liner 65 exists with steel wire ring 62
There are gaps in axial direction.In the prior art generally by stop part with liner 65 close to one end of third processing unit shell 73 end faces
It offseting axially, but in actual operation, the easy thermal expansion due to liner 65 leads to the axial displacement of stop part and fails, because
Steel wire ring 62 is set to the end face of 61 one end of particulate filter by this utility model, and enough thermal expansions have been reserved to liner 65
Space.Such as Figure 10, steel wire ring 62 is connected as one with baffle ring 64, and the indentation, there of baffle ring 64 is used for and second processing portion shell 63
It is welded and fixed.By the setting of steel wire ring 62 and baffle ring 64, the axial displacement of particulate filter 61 is prevented so that particle filtering
The stabilization of the still holding position after exhaust back pressure raising of device 61.
It with continued reference to Fig. 2, is vented after particle filtering, that is, enters third processing unit 7, the nitrogen oxides being exhausted is also
It manages original place.It is similar with above-mentioned connection structure, as shown in figure 5, third processing unit shell 73 is close to second processing portion shell 63
One end, which extends out, extends to connecting pin 731, and second processing portion shell 63 is provided with connection close to one end of third processing unit shell 73
Pipe 631, connecting tube 631 have the big of the expanding part 6311 and expanding part 6311 extended out from the end of second processing portion shell 63
End extends and tapered choke 6312, and gasket seal is provided between the inside and the outside of choke 6312 of connecting pin 731
10, anchor ear 11 embraces the outside in connecting pin 731 and the outside of expanding part 6311, forces inside and the choke of connecting pin 731
6312 outside offsets each other, and gasket seal 10 is clamped, and is clamped connecting pin 731 and connecting tube 631 with this, realizes second
The connection of processing unit shell 63 and third processing unit shell 73.
With continued reference to Fig. 2, exhaust uniformly mixes in mixer 71 with urea liquid, the construction such as application number of mixer 71
201720928649.9 Chinese utility model patent shown in or other kinds of mixer, details are not described herein again.Mixer
The urea of 71 injections are decomposed into ammonia, are uniformly mixed with exhaust, theoretically for, mixing distance is longer, the two it is uniformly mixed
Property is better.For the shell of existing integrally formed exhaust assembly, the utility model uses between each processing unit
Detachable connection can make gas exhaust treatment assembly carry out modular customization assembling according to the demand of user, save great number
Die cost, another embodiment of the utility model as shown in figure 11, in order to further increase the mixed of exhaust and urea
Close effect, third processing unit 7 substitutes by the third processing unit 8 having changed, will exhaust after mixer with the mixing of ammonia away from
From lengthening, the shell if post-processing assembly is integrally formed needs to re-mold, using be detachably connected, modular design,
The change for realizing particular module can be facilitated, also, close using the air inlet mixed structure of end cone-partition board above-mentioned, connecting pin-
The connection structure of gasket-connecting tube shortens the length of exhaust aftertreatment assembly, therefore even if at using the third lengthened
Reason portion 8 will not influence the entire length and arrangement in automobiles of assembly.
With the exhaust of ammonia after mixing, in 180 degrees Celsius or more of temperature, selective catalytic reduction catalysts 72
The redox reaction of nitrogen oxides and ammonia occurs, generates nitrogen, by the exhaust of third processing unit 7, nitrogen oxides
Handling rate is 95% or more.However, for the fuel economy regulation for adapting to more stringent, the temperature that burning generates exhaust will further drop
It is low, therefore, to ensure the abundant decomposition of urea in mixer, reduce urea crystals and selective catalytic reduction it is quick into
Row, it is necessary to assure exhaust is maintained at higher temperature in processing procedure.In the first processing unit shell 53, second processing portion shell
63,73 outer wall of third processing unit shell is both provided with heat insulation structural 9 comprising the heat insulation foam 91 that is contacted with each processing unit shell,
The heat insulation shell that heat insulation foam 91 is surrounded；Heat insulation shell includes by the heat shield 92 of heat insulation foam circumferential seal, by 91 axis of heat insulation foam
To the baffle 93 of sealing, if the axial length of heat shield 92 is longer, to prevent it from being deformed upon during general assembly, heat shield 92
It should be also respectively arranged with reinforcing rib 94 between inner arm and each processing unit housing exterior walls, to enhance the rigidity of heat insulation structural 9.Wherein,
Heat shield 92 is made of steel plate, and is directly coated on corresponding housing exterior walls by the way of winding, more after being covered to complete
Remaining sheet steel sections are welded on molded heat shield, and such processing method does not need special mold, has saved manufacture
Cost.
Delivery temperature is caused to increase as described above, exhaust when oxidation reaction occurs for the first processing unit 5, will release heat,
And be vented the urea liquid sprayed with mixer 71 and mix, delivery temperature will be reduced, and be vented and sent out on catalysts selective 72
The necessary condition of raw reaction is reaction temperature at 180 degrees Celsius or more, and therefore, it is necessary to monitor exhaust in post-processing assembly 1
Temperature change.As shown in Figure 1 and Figure 2, on 2 end cone 3 of intake section, corresponding 51 downstream side of oxidation catalyst and particulate filter 61
Swim the third on the first processing unit shell 53 between side, between corresponding 61 downstream side of particulate filter and 71 upstream side of mixer
On processing unit shell 73,13 end cone 14 of outlet portion be respectively arranged with temperature sensor air hatch 95,96,97,98, temperature sensor
Air hatch is arranged in intake section 2, outlet portion 13, and reason is that the air motion of the two positions is abundant, can fully, effectively
Collecting temperature data；And it is arranged between corresponding 51 downstream side of oxidation catalyst and 61 upstream side of particulate filter, particle filtering
Then it is anti-by the variation monitoring oxidation reaction of temperature, selective reduction between 71 upstream side of 61 downstream side of device and mixer
The reactivity answered.Similarly, it in order to monitor the concentration variation of nox in exhaust, is set respectively in intake section 2 and outlet portion 13
It is equipped with nox concentration sensor air hatch 15,16, in order to monitor the treatment effect for post-processing particle in total paired exhaust,
The first processing unit shell 53 or outlet portion 13 between corresponding 51 downstream side of oxidation catalyst and 61 upstream side of particulate filter are set
It is equipped with granule density sensor air hatch (not shown).
If needing to adapt to more stringent discharge standard in practice, when being vented by mixer 71, mixer 71 should be excessive
Urea is sprayed, to further increase the handling rate of nitrogen oxides, but after Chemoselective reduction, since overspray is urinated
Element there remains atmosphere pollution ammonia in exhaust that treated, therefore also set after selective catalytic reduction catalysts 72
It is equipped with the ammoxidation catalyst 74 of the remaining ammonia of processing, remaining ammonia will be reacted and be oxidized to nitrogen.
The exhaust aftertreatment assembly of the utility model can match the arrangement form and installation requirements of various engines, such as Figure 12
Shown in another embodiment of the utility model structure chart, the axis of the axial line of the intake section 12 having changed and post-processing assembly 1
Heart line is vertical, the axis parallel of the axial line in outlet portion 13 and post-processing assembly 1, i.e. " side into bring out ".Similarly, this practicality is new
The intake section of the exhaust aftertreatment assembly of type and outlet portion can also be arranged to side and go out into side, hold into side and the forms such as go out.
To sum up, the utility model proposes exhaust aftertreatment assembly with emission regulation for oil consumption increasingly stringent at present
New demand devises a kind of novel end cone structure to ensure the uniformity of exhaust in inlet end, is adopted in the junction of shell
With connecting tube and the connection structure of anchor ear so that compact-sized, housing exterior walls add heat insulation structural to ensure that gas temperature makes nitrogen oxygen
Compound such as is fully reacted at the designs so that the exhaust aftertreatment assembly of the use of the new type is meeting increasingly harsh discharge standard
Under the premise of, take into account processing cost, assembly technology and vehicle matching.
Although the utility model is disclosed as above with preferred embodiment, its be not for limiting the utility model, it is any
Those skilled in the art without departing from the spirit and scope of the utility model, can make possible variation and modification.Cause
This, every content without departing from technical solutions of the utility model, according to the technical essence of the utility model to above example institute
Any modification, equivalent variations and the modification made, each fall within the protection domain that the utility model claims are defined.
Claims (10)
1. a kind of vehicle exhaust post-processes assembly, including at least two processing units, each processing unit include processing unit shell, two processing units
Assembly and connection structure between shell includes connecting pin, gasket seal, connecting tube, anchor ear, and the connecting pin is two processing
A processing unit shell in portion's shell extends out extension, and the connecting tube is from another in the two processing units shell
It is arranged on reason portion shell, the expanding part that there is the end of opposite another processing unit shell to extend out and from the expanding part end
Tapered choke, the outside of the choke and the inside for extending out extension face to face, and gasket described in sandwiched
Piece, the anchor ear are embraced in the outside for extending out extension and the outside of the expanding part, and the outside of the choke is forced
It offsets on the inside of extension with described extend out, the connecting pin and the connecting tube is held tightly.
2. exhaust aftertreatment assembly as described in claim 1, which is characterized in that the connecting tube is welded in described at another
Reason portion shell or the connecting tube are shaped in another described processing unit shell.
3. exhaust aftertreatment assembly as described in claim 1, which is characterized in that the outer wall of each processing unit shell is respectively provided with
It includes heat-barrier material, heat insulation shell to have heat insulation structural, the heat insulation structural, and the heat-barrier material and corresponding processing unit shell are straight
Contact, the heat insulation shell surround the heat-barrier material.
4. exhaust aftertreatment assembly as claimed in claim 3, which is characterized in that the heat insulation structural further includes reinforcing rib, institute
Reinforcing rib is stated to be respectively arranged between the inner wall of the heat insulation shell and the outer wall of the processing unit shell.
5. exhaust aftertreatment assembly as claimed in claim 3, which is characterized in that the heat insulation shell include by heat-barrier material into
The heat shield of row circumferential seal, the baffle that heat-barrier material is carried out to axial seal, the heat shield is by roll of steel plate around being welded.
6. exhaust aftertreatment assembly as described in claim 1, which is characterized in that a processing unit of at least two processing units
For particle trap, which further includes particulate filter, liner, steel wire ring, baffle ring, and the liner is arranged described
Between particulate filter and the processing unit shell of the particle trap, the baffle ring is fixed on the processing unit shell of the particle trap
The inner peripheral surface of body, the steel wire ring are fixed on one end of the baffle ring, the end face of the one end in the particulate filter downstream side with
The steel wire ring abuts in the axial direction, and the liner has gap in the axial direction with the steel wire ring.
7. exhaust aftertreatment assembly as described in claim 1, which is characterized in that the vehicle exhaust post-processes assembly and includes：
Intake section, the exhaust generated for receiving vehicle motor burning；
First processing unit, including the first processing unit shell；
Second processing portion is arranged in the first processing unit downstream side, including second processing portion shell；
Third processing unit is arranged in second processing portion downstream side, including third processing unit shell；And
Outlet portion, for exhaust after treatment to be discharged；
Wherein, adjacent processing unit shell in the first processing unit shell, second processing portion shell, third processing unit shell
At least part is connected by the assembly and connection structure.
8. exhaust aftertreatment assembly as claimed in claim 7, which is characterized in that the intake section includes end cone, partition board, described
End cone includes air inlet, and the exhaust generated for receiving vehicle motor burning, the partition board includes air-flow porose area, the air-flow
Porose area is distributed with for being vented the airflow hole passed through.
9. exhaust aftertreatment assembly as claimed in claim 8, which is characterized in that the end cone includes the big end along the end cone
The interior protuberance protruded from medial surface at circumferentially distributed at least two；The partition board further includes bonding pad, and the bonding pad is included in
The air-flow porose area circumferential edge radially extends out and axially projecting bonding pad anchor ring, and in bonding pad anchor ring circumferential direction
Axially projecting male part, the bonding pad anchor ring are abutted with the interior protuberance axial at least the two of distribution, the evagination
Portion offsets with the interior protuberance circumferentially.
10. exhaust aftertreatment assembly as claimed in claim 7, which is characterized in that the intake section, the outlet portion are configured to
Side goes out into side or holds into bringing out or hold into side into bringing out either side；The third processing unit further includes ammoxidation catalysis
Agent；First processing unit includes oxidation catalyst, and the second processing portion includes particulate filter, the third processing unit packet
Include mixer；First processing unit between the correspondence oxidation catalyst downstream side and the particulate filter upstream side
On the third processing unit shell on shell, between the corresponding particulate filter downstream side and the mixer upstream side,
It is respectively arranged with pressure sensor air hatch；In the intake section, the corresponding oxidation catalyst downstream side and the particle mistake
On the first processing unit shell between filter upstream side, correspond to the particulate filter downstream side and the mixer upstream
On the third processing unit shell between side, outlet portion be provided with temperature sensor air hatch；The intake section, it is described go out
Gas portion is provided with nox concentration sensor air hatch；In the correspondence oxidation catalyst downstream side and the particulate filter
The first processing unit shell or the outlet portion between upstream side are provided with granule density sensor air hatch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721684345.9U CN207813720U (en) | 2017-12-06 | 2017-12-06 | Vehicle exhaust post-processes assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721684345.9U CN207813720U (en) | 2017-12-06 | 2017-12-06 | Vehicle exhaust post-processes assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207813720U true CN207813720U (en) | 2018-09-04 |
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| CN201721684345.9U Active CN207813720U (en) | 2017-12-06 | 2017-12-06 | Vehicle exhaust post-processes assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956568A (en) * | 2017-12-06 | 2018-04-24 | 佛吉亚排气控制技术开发(上海）有限公司 | Vehicle exhaust post-processes assembly |
| CN111156068A (en) * | 2019-12-30 | 2020-05-15 | 北汽福田汽车股份有限公司 | Engine aftertreatment system and vehicle |
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2017
- 2017-12-06 CN CN201721684345.9U patent/CN207813720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956568A (en) * | 2017-12-06 | 2018-04-24 | 佛吉亚排气控制技术开发(上海）有限公司 | Vehicle exhaust post-processes assembly |
| CN111156068A (en) * | 2019-12-30 | 2020-05-15 | 北汽福田汽车股份有限公司 | Engine aftertreatment system and vehicle |
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