CN207261087U - The encapsulating structure of engine aftertreatment system - Google Patents
The encapsulating structure of engine aftertreatment system Download PDFInfo
- Publication number
- CN207261087U CN207261087U CN201721093239.3U CN201721093239U CN207261087U CN 207261087 U CN207261087 U CN 207261087U CN 201721093239 U CN201721093239 U CN 201721093239U CN 207261087 U CN207261087 U CN 207261087U
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- China
- Prior art keywords
- carrier
- shell
- encapsulating structure
- aftertreatment system
- engine aftertreatment
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- 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.)
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Abstract
A kind of engine aftertreatment system encapsulating structure design, includes the design of carrier shell.The carrier shell is the tube structure that both sides are carried out with flaring technique.The after-treatment system encapsulating structure is the tube structure into outlet housing and carrier shell integral type.The utility model provides a kind of encapsulating structure design, the tolerance of catalyst carrier can be effectively absorbed, and the guide groove section that push-in type catalyst encapsulates is integrated on carrier shell, the maximized influence for eliminating the excessive tolerance of catalyst and bringing after-treatment system encapsulation process.
Description
Technical field
The utility model belongs to engine aftertreatment system technical field, refers in particular to a kind of encapsulation of engine aftertreatment system
Structure.
Background technology
In the field of engine aftertreatment system, the encapsulation of after-treatment system is an essential link.Tradition
After-treatment system encapsulation include the assembling of air intake assembly, the encapsulation of carrier, go out the encapsulation of pneumatic module and the envelope of system synthesis
Dress.Yet with the limitation of existing production level, the tolerance of Carrier diameters has reached ± 3mm, and in order to ensure pad filling
The uniformity of density (GBD), the diameter of carrier shell can also follow the change of Carrier diameters tolerance and change.This not only cause into
Go out when pneumatic module is assembled with carrier module and certain risk, the uncertainty of after-treatment system outline packages diameter occurs
The design of follow-up heat shield and bracket component is more influenced.Carried so needing a kind of brand-new encapsulation to design to absorb
The tolerance of body so that the profile diameter of whole after-treatment system encapsulation is consistent.
The content of the invention
The purpose of this utility model is to provide a kind of encapsulating structure of engine aftertreatment system so that outside overall package
In the case that shape diameter remains unchanged, larger carrier tolerance is absorbed.
What the purpose of this utility model was realized in：A kind of encapsulating structure of engine aftertreatment system, including shell
Body, it is characterised in that：Shell body is respectively arranged with the integral type tubular shell of air inlet pipe and air outlet pipe for both ends, inside shell body
It is fixed with the carrier shell of installation catalyst carrier.
Preferably, the carrier shell both ends set the flaring with setting value, and flaring outer wall is contradicted in outer inner walls
On.
Preferably, the changeover portion of taper is equipped between the flaring and carrier shell.
Preferably, pad is equipped between the catalyst carrier and carrier shell inner wall.
Preferably, the shell body both ends are packaged with end cap.
This programme devises a carrier shell with flaring, and is flared a diameter of setting value, then by this carrier shell
Body is enclosed in shell body, so that the tolerance of carrier is absorbed by inner housing so that entirely the profile diameter of after-treatment system is
Fixed value.And shell body and pass in and out the housing of pneumatic module and share, form the core structure of integral type, reduce between each component
Welding procedure.And in the flaring design of carrier shell, add the design of low-angle changeover portion, play the role of guide groove,
Booster action is played to carrier and pad push-in carrier shell.
The utility model is prominent and beneficial compared with prior art to be had the technical effect that：
1st, the diameter tolerance of carrier can be effectively absorbed so that overall package profile diameter is consistent.
2nd, will be public into outlet housing and outer carrier, reduce the welding procedure between each component.
3rd, guide groove design is added in the flaring design of carrier shell, pad and carrier push-in carrier shell is played auxiliary
Help effect.
4th, the shell body of integral type is designed so that being easier to control into the distance between air outlet pipe and relative angle.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Reference numeral：1st, air inlet pipe；2nd, shell body；3rd, carrier shell；3a, flaring；3b, changeover portion；4th, pad；5th, urge
Agent carrier；6th, air outlet pipe；7th, end cap.
Embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, referring to Fig. 1：
A kind of After-treatment technics encapsulating structure, including air inlet pipe 1, shell body 2, carrier shell 3, pad 4, catalyst
Carrier 5, air outlet pipe 6, end cap 7 are formed.Shell body 2 is respectively arranged with the integral type tubular of air inlet pipe 1 and air outlet pipe 6 for both ends
Housing, 2 inside immobilization carrier housing 3 of shell body, 3 both ends of carrier shell set the flaring 3a with setting value, are flared 3a outer walls
Contradict on 2 inner wall of shell body.It is flared between 3a and carrier shell 3 and is equipped with the changeover portion 3b of taper.
Embodiment is as follows：
Measure the actual value of Carrier diameters first, it is assumed that actual value is 269.7mm (tolerance is+3mm at this time).According to GBD
Value and pad 4 produce density to determine the gap width between carrier and carrier shell 3, it is assumed that are 6mm.According to gap width and carrier
Diameter determines the overall diameter of carrier shell 3, is 284.7mm (it is assumed that material wall thickness is 1.5mm).Then complete carrier shell 3
Make.
The both ends of carrier shell 3 are subjected to flaring 3a processing again, are flared an a diameter of fixed value of 3a, it is assumed that be
288.7mm.And it is 7o to control the excessive angle of 3a sections of flaring and shell section with mould.
Then, the catalyst carrier 5 after padding 4 will be wrapped and is pushed into carrier shell 3 by pre-set 7o guide grooves.
The carrier module that catalyst carrier 5 will have been enclosed in next step encloses the shell body 2 of fixed diameter, shell body 2 it is outer
A diameter of 291.7mm.
Finally complete the encapsulation into air outlet pipe 6 and end cap 7.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
Enclose, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model
Within the scope of.
Claims (5)
1. a kind of encapsulating structure of engine aftertreatment system, including shell body (2), it is characterised in that：Shell body (2) is both ends
The integral type tubular shell of air inlet pipe (1) and air outlet pipe (6) is respectively arranged with, installation catalyst is fixed with inside shell body (2)
The carrier shell (3) of carrier (5).
2. the encapsulating structure of engine aftertreatment system according to claim 1, it is characterised in that：The carrier shell
(3) both ends set the flaring (3a) with setting value, and flaring (3a) outer wall is contradicted on shell body (2) inner wall.
3. the encapsulating structure of engine aftertreatment system according to claim 2, it is characterised in that：It is described flaring (3a) with
The changeover portion (3b) of taper is equipped between carrier shell (3).
4. the encapsulating structure of engine aftertreatment system according to claim 1, it is characterised in that：The catalyst carrier
(5) pad (4) is equipped between carrier shell (3) inner wall.
5. the encapsulating structure of engine aftertreatment system according to claim 1, it is characterised in that：The shell body (2)
Both ends are packaged with end cap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721093239.3U CN207261087U (en) | 2017-08-29 | 2017-08-29 | The encapsulating structure of engine aftertreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721093239.3U CN207261087U (en) | 2017-08-29 | 2017-08-29 | The encapsulating structure of engine aftertreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207261087U true CN207261087U (en) | 2018-04-20 |
Family
ID=61922602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721093239.3U Active CN207261087U (en) | 2017-08-29 | 2017-08-29 | The encapsulating structure of engine aftertreatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207261087U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355286A (en) * | 2017-08-29 | 2017-11-17 | 浙江银轮机械股份有限公司 | The encapsulating structure of engine aftertreatment system |
-
2017
- 2017-08-29 CN CN201721093239.3U patent/CN207261087U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355286A (en) * | 2017-08-29 | 2017-11-17 | 浙江银轮机械股份有限公司 | The encapsulating structure of engine aftertreatment system |
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