CN202532096U - Connecting pipe for exhaust gas recirculation (EGR) system - Google Patents
Connecting pipe for exhaust gas recirculation (EGR) system Download PDFInfo
- Publication number
- CN202532096U CN202532096U CN2012201136999U CN201220113699U CN202532096U CN 202532096 U CN202532096 U CN 202532096U CN 2012201136999 U CN2012201136999 U CN 2012201136999U CN 201220113699 U CN201220113699 U CN 201220113699U CN 202532096 U CN202532096 U CN 202532096U
- Authority
- CN
- China
- Prior art keywords
- pipe
- egr
- exhaust gas
- corrugated
- gas recirculation
- 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
Links
Classifications
-
- 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
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model provides a connecting pipe for an exhaust gas recirculation (EGR) system. The connecting pipe comprises pipe pieces, a support welded between the pipe pieces and flange plates welded at two ends of the pipe pieces; a corrugated pipe is arranged between the support between the pipe pieces and a flange plate at each of two ends of the pipe pieces, and each corrugated pipe is provided with more than 8 corrugations; and the corrugated pipes are made of a stainless steel material 0Cr18Ni9, and the wall thickness of each corrugated pipe is 0.4 to 0.5 millimeter. According to the connecting pipe, the corrugation quantity of the corrugated pipes is increased, the corrugated pipes are made of the thin pipe material compared with the conventional design, the material is 0Cr18Ni9, and the thickness of the material is 0.4 or 0.5 millimeter, so that shock can be effectively absorbed, and manufacturing and assembly errors of components are eliminated; and the corrugated pipes can be randomly bent according to different models, so that the connecting pipe is conveniently installed.
Description
Technical field
The utility model relates to the component of DENG, specifically is system's connecting tube of automotive Diesel engine (EGR).
Background technique
Adopt the motor car engine of exhaust gas recirculation (EGR) system that a connecting tube that is connected between air hatch (suction port) and the cooler is arranged; The material that original connecting tube adopts is 0Cr18Ni9; Expect that thick is 0.8mm; Do several ripples (generally doing 5 to 6) in the centre with steel pipe and be bent into definite shape, be welded with flange plate again through tube bender.The connecting tube of this structure in use owing to receive the spatial limitation that complete machine is arranged, ripple receives high vibration and causes Cracking Failure; Because each sub-assembly is made and assembly error, cause the assembling difficulty.
Summary of the invention
The purpose of the utility model provides a kind of connecting tube that is used for exhaust gas recirculation (EGR) system, and effectively absorbed oscillation is eliminated each sub-assembly manufacturing and assembly error, makes things convenient for the installation of exhaust gas recirculation (EGR) system connecting tube.
The technological scheme of the utility model does for this reason; A kind of connecting tube that is used for exhaust gas recirculation (EGR) system; Comprise pipe fitting; Be welded on middle support of pipe fitting and the flange plate that is welded on the pipe fitting two ends, it is characterized in that: be provided with bellows between the support in the middle of pipe fitting and the flange plate at pipe fitting two ends, bellows ripple quantity is greater than 8 ripples.
Improvement to such scheme is: said bellows is made with stainless steel material 0Cr18Ni9, and its wall thickness is 0.4 ~ 0.5mm.
Beneficial effect:
The utility model has increased the ripple quantity of bellows; Select for use the tubing thinner than former design to make bellows, material adopts 0Cr18Ni9, expects that thick is 0.4 or 0.5mm; Effectively absorbing; Eliminate each sub-assembly manufacturing and assembly error, bellows can be crooked arbitrarily according to different type of machines, thereby this connecting tube is installed easily.
Description of drawings
Fig. 1 is the structural representation of the utility model.
1 is support among the figure, the 2nd, and flange plate, the 3rd, pipe fitting, the 4th, bellows.
Embodiment
The utility model is as shown in Figure 1.
A kind of connecting tube that is used for exhaust gas recirculation (EGR) system comprises pipe fitting 3, is welded on the support 1 and the flange plate 2 that is welded on pipe fitting 3 two ends of pipe fitting 3 centres, and described pipe fitting 3 is to make with stainless steel material 0Cr18Ni9, and its wall thickness is 0.8mm.
Between the flange plate 2 at support 1 in the middle of the pipe fitting 3 and pipe fitting 3 two ends, be provided with bellows 4, bellows 4 ripple quantity are greater than eight ripples.
Bellows 4 is to make with stainless steel material 0Cr18Ni9, and its wall thickness is 0.4 ~ 0.5mm.
Support 1 covers to engine cylinder through screw in use; The flange plate 2 of bellows 4 outer ends arrives on the air hatch (suction port) through screw; The flange plate of pipe fitting 3 the other ends through screw to cooler, thereby realize exhaust gas recirculation (EGR) system connecting tube being connected between motor air hatch (suction port) and cooler.Effectively absorbing, the said bellows of said exhaust gas recirculation (EGR) system's connecting tube can be crooked arbitrarily according to different type of machines, thereby this connecting tube is installed easily.
Claims (2)
1. connecting tube that is used for exhaust gas recirculation (EGR) system; Comprise pipe fitting; Be welded on middle support of pipe fitting and the flange plate that is welded on the pipe fitting two ends; It is characterized in that: be provided with bellows between the support in the middle of pipe fitting and the flange plate at pipe fitting two ends, bellows ripple quantity is greater than 8 ripples.
2. a kind of connecting tube that is used for exhaust gas recirculation (EGR) system according to claim 1 is characterized in that: said bellows is made with stainless steel material 0Cr18Ni9, and its wall thickness is 0.4 ~ 0.5mm.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201136999U CN202532096U (en) | 2012-03-23 | 2012-03-23 | Connecting pipe for exhaust gas recirculation (EGR) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201136999U CN202532096U (en) | 2012-03-23 | 2012-03-23 | Connecting pipe for exhaust gas recirculation (EGR) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202532096U true CN202532096U (en) | 2012-11-14 |
Family
ID=47133282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201136999U Expired - Fee Related CN202532096U (en) | 2012-03-23 | 2012-03-23 | Connecting pipe for exhaust gas recirculation (EGR) system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202532096U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925120A (en) * | 2014-05-07 | 2014-07-16 | 广西玉柴机器股份有限公司 | EGR connection tube assembly of engine |
| CN105604747A (en) * | 2016-03-09 | 2016-05-25 | 广西玉柴机器股份有限公司 | Vibration fracture preventive EGR (exhaust gas recirculation) corrugated pipe |
| CN105673941A (en) * | 2016-03-11 | 2016-06-15 | 上海市安装工程集团有限公司 | Bidirectional impulsion-bearing type fixing support for steam stand pipes and installation method |
-
2012
- 2012-03-23 CN CN2012201136999U patent/CN202532096U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925120A (en) * | 2014-05-07 | 2014-07-16 | 广西玉柴机器股份有限公司 | EGR connection tube assembly of engine |
| CN103925120B (en) * | 2014-05-07 | 2016-04-27 | 广西玉柴机器股份有限公司 | The EGR connecting pipe component of motor |
| CN105604747A (en) * | 2016-03-09 | 2016-05-25 | 广西玉柴机器股份有限公司 | Vibration fracture preventive EGR (exhaust gas recirculation) corrugated pipe |
| CN105673941A (en) * | 2016-03-11 | 2016-06-15 | 上海市安装工程集团有限公司 | Bidirectional impulsion-bearing type fixing support for steam stand pipes and installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20150323 |
|
| EXPY | Termination of patent right or utility model |