CN202900450U - Waste gas taking pipe for diesel waste gas recirculation engine - Google Patents
Waste gas taking pipe for diesel waste gas recirculation engine Download PDFInfo
- Publication number
- CN202900450U CN202900450U CN2012205371080U CN201220537108U CN202900450U CN 202900450 U CN202900450 U CN 202900450U CN 2012205371080 U CN2012205371080 U CN 2012205371080U CN 201220537108 U CN201220537108 U CN 201220537108U CN 202900450 U CN202900450 U CN 202900450U
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- Prior art keywords
- gas
- tracheae
- annular groove
- waste gas
- ring
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- Expired - Lifetime
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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
- 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
An exhaust gas taking pipe for a diesel exhaust gas recirculation engine comprises a gas taking pipe (1), wherein one end of the gas taking pipe (1) is provided with a gas taking port (2), the other end of the gas taking pipe (1) is provided with a gas taking pipe gas outlet (4), the utility model is characterized in that one end of the outer wall of the gas taking pipe (1) close to the gas taking port (2) is provided with an annular groove (5), an elastic sealing gas ring (6) is arranged in the annular groove (5), the inner diameter of the gas taking port (2) is smaller than that of the gas outlet pipe of the exhaust manifold (3), and the excircle diameter of the sealing gas ring (6) is larger than that of the gas outlet pipe of the exhaust manifold (3), the utility model has simple structure and convenient installation, the gas taking pipe can slide in the exhaust manifold to a certain extent after being subjected to high temperature expansion deformation, the stress brought to each part by the high temperature expansion deformation can be eliminated, and the damage of the gas taking pipe and the connecting piece due to overla, meanwhile, the sealing air ring is in interference fit with the inner wall of the exhaust manifold, so that a good sealing effect is achieved.
Description
Technical field
The utility model relates to a kind of tracheae of getting, and relates in particular to a kind of waste gas for diesel exhaust recirculation motor and gets tracheae.
Background technique
In the face of the increasingly strict development trend of automobile emission regulation, motor all adopts selective catalytic reduction SCR technology or EGR EGR technology to reach present emission standard, but in order to reach more and more higher emission standard, the emission standard of Europe six degree needs SCR to cooperate the EGR technology to realize.
The EGR technology is to utilize EGR to regulate to enter gas composition in the firing chamber, reaches Optimizing Combustion, reduces the effect of PM discharging.EGR gets gas and comes from gas exhaust manifold, the high temperature of waste gas cause gas exhaust manifold to the tracheae between cooler for recycled exhaust gas namely: EGR gets the expanded by heating of tracheae.How to eliminate and get the tracheae dilatancy to the impact of tracheae and link, avoid associated part to be subjected to stress and damage, guarantee the reliability of egr system, to need the problem faced in the existing actual design, EGR gets the link of tracheae and gas exhaust manifold because high-temperature expansion easily causes deformed damaged at present, keep the good sealability of egr system nor be beneficial to, affected the reliability of egr system.
Such as Chinese utility model patent notification number: CN202157880U, open day: the utility model patent on March 7th, 2012 disclosed a kind of EGR valve air feeder structure, comprise connecting tube and be located at first flange that is connected with the EGR valve respectively and the second flange that is connected with gas exhaust manifold at its two ends, be characterized in: the first flange is made of the loose flange that the fastening flange that is welded on the connecting tube end and rotating sleeve are contained on the fastening flange, loose flange is shaped with the mounting hole of fastening flange in the side near the connecting tube end, the degree of depth of mounting hole is less than the width of fastening flange, loose flange is provided with the through hole that is connected with the EGR valve, also be provided with metal bellows on the connecting tube, above-mentioned the first flange is made of fastening flange and loose flange, fastening flange guarantees that EGR valve air feeder structure contacts with the sealing of EGR valve, and loose flange is adjusting angle arbitrarily.But the connection between the gas exhaust manifold of this device and the air flue all adopts flange to connect, and easily causes the deformed damaged of flange connector under the effect of high-temperature expansion, and easily causes sealability to reduce, thereby has a strong impact on the reliability of whole egr system.
Summary of the invention
The purpose of this utility model is to get the link of tracheae and gas exhaust manifold because high-temperature expansion easily causes deformed damaged for existing EGR, not good defective and the deficiency of while sealing, provide a kind of simple in structure, easy for installation, good airproof performance, the high-temperature expansion distortion can not cause a kind of waste gas for diesel exhaust recirculation motor of link damage to get tracheae yet for a long time again.
For achieving the above object, technical solution of the present utility model is: a kind of waste gas for diesel exhaust recirculation motor is got tracheae, comprise and get tracheae, an end of getting tracheae is air hatch, get the other end of tracheae for getting air pipe outlet, end near air hatch on the described outer wall of getting tracheae offers annular groove, be provided with the elastic packing compression ring in the annular groove, the internal diameter of air hatch is less than the internal diameter of gas exhaust manifold steam outlet pipe, and the outside diameter of seal gas ring is greater than the internal diameter of gas exhaust manifold steam outlet pipe.
Offer 1-4 road annular groove on the described outer wall circumference of getting tracheae, be placed with 1-2 seal gas ring in each annular groove.
Described seal gas ring is for annular or with the loop configuration of opening.
Described seal gas ring adopts elastic caoutchouc to make.
Large 1 millimeter-4 millimeters than the external diameter of air hatch of the circle diameters of described seal gas ring.
The beneficial effects of the utility model are:
1. the utility model offers annular groove at the connecting end excircle of getting tracheae and gas exhaust manifold, be provided with seal gas ring in the annular groove, the mouthpiece cover of air hatch is in the pipe of the air outlet of gas exhaust manifold, and the interference fit by seal gas ring and gas exhaust manifold inwall is to reach preferably sealing effect.
2. the utility model is simple in structure, easy for installation, getting tracheae is subjected to can produce certain slip after the high-temperature expansion distortion in gas exhaust manifold, can eliminate high-temperature expansion be out of shape to each parts bring stressed, avoid getting tracheae and link stressed excessive and damage, also guaranteed preferably sealability simultaneously.
Description of drawings
Fig. 1 is the explosive view of the utility model annular groove 5 and seal gas ring 6.
Fig. 2 is the structural representation after the utility model annular groove 5 and seal gas ring 6 assemblings.
Fig. 3 is overall structure schematic diagram of the present utility model.
Among the figure: get tracheae 1, air hatch 2, gas exhaust manifold 3 is got air pipe outlet 4, annular groove 5, seal gas ring 6.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail.
Referring to Fig. 1 to Fig. 3, a kind of waste gas for diesel exhaust recirculation motor of the present utility model is got tracheae, comprise and get tracheae 1, an end of getting tracheae 1 is air hatch 2, get the other end of tracheae 1 for getting air pipe outlet 4, end near air hatch 2 on the described outer wall of getting tracheae 1 offers annular groove 5, be provided with elastic packing compression ring 6 in the annular groove 5, the internal diameter of air hatch 2 is less than the internal diameter of gas exhaust manifold 3 steam outlet pipes, and the outside diameter of seal gas ring 6 is greater than the internal diameter of gas exhaust manifold 3 steam outlet pipes.
Offer 1-4 road annular groove 5 on the described outer wall circumference of getting tracheae 1, be placed with 1-2 seal gas ring 6 in each annular groove 5.
Described seal gas ring 6 is for annular or with the loop configuration of opening.
Described seal gas ring 6 adopts elastic caoutchouc to make.
Large 1 millimeter-4 millimeters than the external diameter of air hatch 2 of the circle diameters of described seal gas ring 6.
An end of getting tracheae 1 is air hatch 2, gets the other end of tracheae 1 for getting air pipe outlet 4, and air hatch 2 is connected with the air outlet of gas exhaust manifold 3, and the end of getting air pipe outlet 4 is provided with flange or clip connected part.Get that the end near air hatch 2 offers annular groove 5 on the outer wall circumference of tracheae 1, annular groove 5 offers the 1-4 road, is provided with seal gas ring 6 in the annular groove 5, is placed with 1-2 seal gas ring 6 in each annular groove 5.Seal gas ring 6 is made for annular or with the elastic ring rubber of opening, large 1 millimeter-4 millimeters than the external diameter of air hatch 2 of the circle diameters of seal gas ring 6, and seal gas ring 6 can play seal action.
The mouthpiece cover of air hatch 2 is in the pipe of the air outlet of gas exhaust manifold 3, so that the inner tubal wall of seal gas ring 6 and gas exhaust manifold 3 compresses mutually, the internal diameter of gas exhaust manifold 3 steam outlet pipes is less than the outside diameter of seal gas ring 6, and the interference fit by one or more seal gas rings 6 and gas exhaust manifold 3 inwalls is to reach preferably sealing effect.When offering one annular groove 5 on the outer wall circumference of the air hatch end of getting tracheae 1, be provided with the seal gas ring 6 of not being with opening in the annular groove 5, to guarantee intact sealability; When offering twice and above annular groove 5 on the outer wall circumference of the air hatch end of getting tracheae 1, be provided with annular in the annular groove 5 or not with the seal gas ring 6 of opening, opening part is staggered when adopting the seal gas ring 6 with opening.Can be in the certain slip of gas exhaust manifold 3 interior generations after getting tracheae 1 to be subjected to high-temperature expansion distortion, can eliminate high-temperature expansion be out of shape to each parts bring stressed, avoided getting tracheae 1 and link stressed excessive and damage.
The end of getting air pipe outlet 4 is provided with flange or clip connected part, gets air pipe outlet 4 and is connected with an end of EGR valve by flange or clip connected part, and the other end of EGR valve is connected with cooler for recycled exhaust gas.The utility model is simple in structure, connects reliably, gets tracheae 1 and has played preferably seal action with gas exhaust manifold 3 by seal gas ring 6, and the while has also been avoided the distortion of link high-temperature expansion and damaged.
Claims (5)
1. a waste gas that is used for diesel exhaust recirculation motor is got tracheae, comprise and get tracheae (1), an end of getting tracheae (1) is air hatch (2), get the other end of tracheae (1) for getting air pipe outlet (4), it is characterized in that: the end near air hatch (2) on the described outer wall of getting tracheae (1) offers annular groove (5), be provided with elastic packing compression ring (6) in the annular groove (5), the internal diameter of air hatch (2) is less than the internal diameter of gas exhaust manifold (3) steam outlet pipe, and the outside diameter of seal gas ring (6) is greater than the internal diameter of gas exhaust manifold (3) steam outlet pipe.
2. a kind of waste gas for diesel exhaust recirculation motor according to claim 1 is got tracheae, it is characterized in that: offer 1-4 road annular groove (5) on the described outer wall circumference of getting tracheae (1), be placed with 1-2 seal gas ring (6) in each annular groove (5).
3. a kind of waste gas for diesel exhaust recirculation motor according to claim 1 is got tracheae, it is characterized in that: described seal gas ring (6) is for annular or with the loop configuration of opening.
4. a kind of waste gas for diesel exhaust recirculation motor according to claim 1 is got tracheae, it is characterized in that: described seal gas ring (6) adopts elastic caoutchouc to make.
5. a kind of waste gas for diesel exhaust recirculation motor according to claim 1 is got tracheae, it is characterized in that: large 1 millimeter-4 millimeters than the external diameter of air hatch (2) of the circle diameters of described seal gas ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205371080U CN202900450U (en) | 2012-10-19 | 2012-10-19 | Waste gas taking pipe for diesel waste gas recirculation engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205371080U CN202900450U (en) | 2012-10-19 | 2012-10-19 | Waste gas taking pipe for diesel waste gas recirculation engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900450U true CN202900450U (en) | 2013-04-24 |
Family
ID=48121129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205371080U Expired - Lifetime CN202900450U (en) | 2012-10-19 | 2012-10-19 | Waste gas taking pipe for diesel waste gas recirculation engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937056A (en) * | 2012-10-19 | 2013-02-20 | 东风汽车有限公司 | Waste gas taking pipe for diesel waste gas recirculation engine |
-
2012
- 2012-10-19 CN CN2012205371080U patent/CN202900450U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937056A (en) * | 2012-10-19 | 2013-02-20 | 东风汽车有限公司 | Waste gas taking pipe for diesel waste gas recirculation engine |
| CN102937056B (en) * | 2012-10-19 | 2015-08-12 | 东风汽车公司 | A kind of waste gas for diesel exhaust recirculation motor gets tracheae |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG CAR CO. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130717 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130717 Address after: 430056 Wuhan economic and Technological Development Zone, Hubei Province, Dongfeng Road, No. 1, No. Patentee after: Dongfeng Motor Corporation Address before: 430056 Dongfeng Road, Wuhan Economic Development Zone, Hanyang District, Hubei, China, No. 10, No. Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20150812 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20150812 |
|
| RGAV | Abandon patent right to avoid regrant |