CN207297195U - A kind of automobile using EGR connecting tubes - Google Patents
A kind of automobile using EGR connecting tubes Download PDFInfo
- Publication number
- CN207297195U CN207297195U CN201721168803.3U CN201721168803U CN207297195U CN 207297195 U CN207297195 U CN 207297195U CN 201721168803 U CN201721168803 U CN 201721168803U CN 207297195 U CN207297195 U CN 207297195U
- Authority
- CN
- China
- Prior art keywords
- bellows
- pipe
- sections
- pipes
- wall thickness
- 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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- Exhaust Silencers (AREA)
Abstract
The utility model automobile using EGR connecting tubes, it is related to a kind of auto parts machinery, including pipe, bellows, connecting flange, connecting bracket, bellows is connected between two sections of pipes by welding manner, the wall thickness of two sections of pipes is respectively 0.8 1.5mm, the wall thickness of bellows is 0.3mm 0.6mm, the pitch of waves of bellows is 5.8mm, the a diameter of 23mm of wave crest, two sections of pipes are connected with connecting flange respectively away from bellows one end, and connecting bracket can be moved along pipe centerline direction and covered wherein outside a pipe.Not only manufacture and assemble easily using the structure of the utility model, and the problem of Cracking that effectively can be reduced vibrating fatigue and produce, it is possible to prevente effectively from EGR connecting tubes fail.
Description
Technical field
A kind of auto parts machinery is the utility model is related to, more particularly to a kind of automobile using EGR connecting tubes.
Background technology
EGR（Exhaust gas recycles）It is that a small amount of exhaust gas return combustion chamber is introduced by engine to realize vehicle fuel economy
Property, NOx emission is reduced, and lift engine performance.EGR connecting tubes are one of essential elements in egr system, its structure
Schematic diagram as shown in Figure 1, 2, by two connecting flanges, 1, one section of pipe 2 with bellows 3 and one welded by existing EGR connecting tubes
Stent 4 outside pipe forms, and bellows and pipe are integrally formed pipelines, bellows it is identical with the pipe wall thickness of pipe and
It is 0.5mm, the bellows pitch of waves is 4mm, and this structure is when connecting two parts that vibration displacement differs greatly, easily in ripple
Occurs the risk being broken at line pipe, welding support or at connecting flange to some extent.
The content of the invention
The purpose of this utility model is in view of the above-mentioned drawbacks of the prior art, EGR companies can effectively be reduced by providing one kind
The automobile using EGR connecting tubes of adapter risk of breakage.
The technical solution that the utility model uses to achieve the above object is：A kind of automobile using EGR connecting tubes, including circle
Pipe, bellows, connecting flange, connecting bracket, between bellows is connected to two sections of pipes by welding manner, the wall of two sections of pipes
Thickness is respectively 0.8-1.5mm, and the wall thickness of bellows is 0.3mm-0.6mm, and the pitch of waves of bellows is 5.8mm, and wave crest is a diameter of
23mm, two sections of pipes are connected with connecting flange respectively away from bellows one end, and connecting bracket can be along pipe centerline direction
Move and cover wherein outside a pipe.
The further technical solution of the utility model is：The wall thickness of two sections of pipes is respectively 1mm, and the wall thickness of bellows is
0.5mm。
The utility model automobile using EGR connecting tubes have the advantages that：EGR connecting tubes use segmentation structure, circle
Pipe is different from the wall thickness of bellows, increases pipe wall thickness, while increases the pitch of waves of bellows, solves manufacturing process from structure
Limitation（Pipe is integrally formed manufacturing process complexity with bellows）, not only assembling is easy, and it is tired effectively to reduce vibration
Labor and the problem of Cracking produced, it is possible to prevente effectively from EGR connecting tubes fail.
The utility model automobile using EGR connecting tubes are further described with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is the structure diagram of prior art automobile using EGR connecting tubes；
Fig. 2 is the partial sectional view of Fig. 1；
Fig. 3 is the structure diagram of the utility model automobile using EGR connecting tubes；
Fig. 4 is the partial sectional view of Fig. 3.
Embodiment
As shown in Figure 3, Figure 4, the utility model automobile using EGR connecting tubes, including pipe 6, bellows 7, connecting flange 1,
Connecting bracket 8, between bellows 7 is connected to two sections of pipes 6 by welding manner, the wall thickness of two sections of pipes 6 is respectively 0.8-
1.5mm, the wall thickness of bellows 7 is 0.3mm-0.6mm, and the pitch of waves of bellows 7 is 5.8mm, a diameter of 23mm of wave crest, in this implementation
In example, the wall thickness of two sections of pipes 6 is respectively 1mm, and the wall thickness of bellows 7 is 0.5mm, wherein the ruler indicated in Figure of description
The size of very little non-the present embodiment.It is connected respectively with connecting flange 1 away from 7 one end of bellows in two sections of pipes 6, connecting bracket 8
It can move and be covered wherein outside a pipe 6 along pipe centerline direction.Two sections of pipes 6 are specifically connected as with bellows 7
Pipe 6 is respectively embedded into bellows 7 and is fixed together by soldering at two, this structure is conducive to the separately formed of bellows 7,
And bellows 7 is seted to be limited from molding from 6 wall thickness of pipe is increased；This structure is not only assembled easily, but also can be reduced
The vibration of EGR connecting tubes, reduces the cracking risk of EGR connecting tubes.
Above example is only the preferred embodiment of the utility model, and the structure of the utility model is not limited to above-mentioned implementation
The form enumerated of example, it is all in this practicality as the wall thickness of pipe and bellows can select arbitrary value in the scope of the utility model
New spiritual and any modification made within principle, equivalent substitution etc., should be included in the scope of protection of the utility model
Within.
Claims (2)
1. a kind of automobile using EGR connecting tubes, including pipe（6）, bellows（7）, connecting flange（5）, connecting bracket（8）, it is special
Sign is, bellows（7）Two sections of pipes are connected to by welding manner（6）Between, two sections of pipes（6）Wall thickness be respectively 0.8-
1.5mm, bellows（7）Wall thickness be 0.3mm-0.6mm, bellows（7）The pitch of waves be 5.8mm, wave crest a diameter of 23mm, two sections
Pipe（6）Away from bellows（7）One end respectively with connecting flange（5）Connection, connecting bracket（8）Can be along pipe center line side
To movement and cover a pipe wherein（6）Outside.
2. automobile using EGR connecting tubes as claimed in claim 1, it is characterised in that two sections of pipes（6）Wall thickness be respectively 1mm,
Bellows（7）Wall thickness be 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721168803.3U CN207297195U (en) | 2017-09-12 | 2017-09-12 | A kind of automobile using EGR connecting tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721168803.3U CN207297195U (en) | 2017-09-12 | 2017-09-12 | A kind of automobile using EGR connecting tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207297195U true CN207297195U (en) | 2018-05-01 |
Family
ID=62447215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721168803.3U Expired - Fee Related CN207297195U (en) | 2017-09-12 | 2017-09-12 | A kind of automobile using EGR connecting tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207297195U (en) |
-
2017
- 2017-09-12 CN CN201721168803.3U patent/CN207297195U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 |