CN102287296A - Exhaust gas recirculation mixer - Google Patents
Exhaust gas recirculation mixer Download PDFInfo
- Publication number
- CN102287296A CN102287296A CN2011102689161A CN201110268916A CN102287296A CN 102287296 A CN102287296 A CN 102287296A CN 2011102689161 A CN2011102689161 A CN 2011102689161A CN 201110268916 A CN201110268916 A CN 201110268916A CN 102287296 A CN102287296 A CN 102287296A
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- CN
- China
- Prior art keywords
- exhaust gas
- gas recirculation
- recirculation mixer
- air
- waste gas
- 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.)
- Pending
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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
The invention discloses an exhaust gas recirculation mixer which comprises a cylindrical body, wherein the lower end of the body is provided with a diagonal cut facing the outlet direction of an air inlet pipe, and the body is provided with a plurality of air outlets. The invention can improve the mixing efficiency of the waste gas and the fresh air, and leads the waste gas and the fresh air to be uniformly mixed and have compact structure.
Description
Technical field
The present invention relates to a kind of mixer, relate in particular to a kind of exhaust gas recirculation mixer.
Background technique
Exhaust gas recirculatioon is common described exhaust gas recirculation, is meant that a part of waste gas that motor is discharged causes suction tude from gas exhaust manifold, and enters the firing chamber after air inlet mixes.Because after waste gas and fresh air mixed, the oxygen content of mixed gas reduced, thereby the combustion temperature when having reduced engine operation can effectively suppress the formation of oxynitrides, makes it to reach emission request.
At present, the mixer that is used for mix waste gas and fresh air is a kind of isodiametric mixing tube, and described mixing tube directly inserts suction tude from the side.For guaranteeing the Economy of motor, need to guarantee mixing of waste gas and fresh air, generally,, need the mixing tube of sufficient length, yet because the engine compartment space is limited, the length of increase mixing tube is difficulty relatively in order to guarantee to mix.In addition, the length that increases mixing tube can increase the air inlet fluid resistance losses, reduces the motor charging efficiency, influences engine performance.
Therefore, being necessary to provide a kind of mixes and the exhaust gas recirculation mixer of compact structure overcomes above-mentioned defective.
Summary of the invention
The purpose of this invention is to provide a kind of mixing efficiency that can improve waste gas and fresh air, make mixing and the exhaust gas recirculation mixer of compact structure of waste gas and fresh air.
To achieve these goals, the invention provides a kind of exhaust gas recirculation mixer and comprise the tubular body, the lower end of body has towards the angular cut of the Way out of suction tude, offers a plurality of air outlets on the body.
Preferably, body comprises up big and down small conical air input part and the cylindric exhaust portion that extends to form along the base of air input part downwards.The structure of shrinking in the middle of the present invention adopts can increase the turbulent flow influence that waste gas flow velocity, reduction exhaust gas pressure and minimizing produce owing to exhaust back pressure changes.
Preferably, the air outlet is opened on the exhaust portion of body.
Preferably, described exhaust gas recirculation mixer also comprises flange, and flange is fixed on the air input part upper end of body.Flange can make things convenient for being connected of exhaust gas recirculation mixer of the present invention and suction tude.
Preferably, the air outlet is rounded.
Preferably, the angle α of plane, angular cut place and horizontal plane is 30 °～60 °.Described angular cut is the flow direction of direct exhaust effectively, reduces the increase of hitting the disorderly and intake resistance of charge air flow that the wall bounce-back causes because of waste gas.
Compared with prior art, owing to offer a plurality of air outlets on the body of the present invention, thereby, exhaust gas recirculation mixer of the present invention can increase waste gas and blending space from the fresh air of the suction port of suction tude, thereby the mixing that makes waste gas and fresh air is more even and improved the mixing efficiency of waste gas and fresh air, and then has guaranteed the Economy of motor.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the structural representation of exhaust gas recirculation mixer of the present invention.
The schematic representation that Fig. 2 is connected with suction tude for exhaust gas recirculation mixer of the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.
Shown in Fig. 1-2, the exhaust gas recirculation mixer of present embodiment comprises body 10 and flange 11.Body 10 comprises up big and down small conical air input part 101 and the cylindric exhaust portion 102 that extends to form along the base of air input part 101 downwards.Flange 11 is fixed on the upper end of air input part 101.The lower end of exhaust portion 102 has towards the angular cut 12 of the Way out B2 of suction tude 20, and offers the air outlet 13 of two circles on the exhaust portion 102.The angle α of angular cut plane, 12 place and horizontal plane is 30 °～60 °.
Understandably, the structure of contraction in the middle of exhaust gas recirculation mixer of the present invention adopts, can increase waste gas flow velocity, reduction exhaust gas pressure and reduce owing to exhaust back pressure changes the turbulent flow that produces influences.And described angular cut is the flow direction of direct exhaust effectively, reduces the increase of hitting the disorderly and intake resistance of charge air flow that the wall bounce-back causes because of waste gas.
Particularly, with reference to figure 2, the upper end of exhaust gas recirculation mixer of the present invention cooperates the top that is fixed on suction tude 20 by flange 11 with the mounting flange 21 of suction tude 20, the lower end then stretch in the suction tude 20 and the angular cut 12 of lower end towards the Way out B2 of suction tude 20.Like this, exhaust gas recirculation mixer of the present invention keeps vertical with the airintake direction A2 of suction tude 20.In addition, between the mounting flange 21 of the flange 11 of exhaust gas recirculation mixer of the present invention and suction tude 20, also be provided with sealing gasket 22, to prevent gas leakage.
During work, waste gas from enmgine exhaust (not shown) enters exhaust gas recirculation mixer along direction A1, and a part of waste gas enters along direction B1 from exhaust gas recirculation mixer in the suction tude 20 by angular cut 12, and another part waste gas then enters in the suction tude 20 by air outlet 13.Fresh air from turbosupercharger (not shown) enters in the suction tude 20 along direction A2, with suction tude 20 in waste gas mix uniformly, mixed gas enters the firing chamber along direction B2 and burns.
As shown from the above technical solution, owing to offer a plurality of air outlets 13 on the body 10 of the present invention, thereby, exhaust gas recirculation mixer of the present invention can increase waste gas and blending space from the fresh air of the suction port of suction tude, thereby the mixing that makes waste gas and fresh air is more even and improved the mixing efficiency of waste gas and fresh air, and then has guaranteed the Economy of motor.
Claims (6)
1. an exhaust gas recirculation mixer comprises tubular body (10), and the lower end of body (10) has the angular cut (12) towards the Way out of suction tude (20), it is characterized in that, offers a plurality of air outlets (13) on the body (10).
2. exhaust gas recirculation mixer as claimed in claim 1 is characterized in that, body (10) comprises up big and down small conical air input part (101) and the cylindric exhaust portion (102) that extends to form along the base of air input part (101) downwards.
3. exhaust gas recirculation mixer as claimed in claim 2 is characterized in that, air outlet (13) are opened on the exhaust portion (102) of body (10).
4. exhaust gas recirculation mixer as claimed in claim 2 is characterized in that, also comprises flange (11), and flange (11) is fixed on air input part (101) upper end of body (10).
5. exhaust gas recirculation mixer as claimed in claim 1 is characterized in that, air outlet (13) are rounded.
6. exhaust gas recirculation mixer as claimed in claim 1 is characterized in that, the angle α of angular cut (12) plane, place and horizontal plane is 30 °～60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102689161A CN102287296A (en) | 2011-09-13 | 2011-09-13 | Exhaust gas recirculation mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102689161A CN102287296A (en) | 2011-09-13 | 2011-09-13 | Exhaust gas recirculation mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287296A true CN102287296A (en) | 2011-12-21 |
Family
ID=45333983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102689161A Pending CN102287296A (en) | 2011-09-13 | 2011-09-13 | Exhaust gas recirculation mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102287296A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850829A (en) * | 2012-12-04 | 2014-06-11 | 通用汽车环球科技运作有限责任公司 | Engine including external EGR system |
| CN110359985A (en) * | 2018-04-11 | 2019-10-22 | 埃贝斯佩歇排气技术有限责任两合公司 | The gas/gas mixer in waste gas stream for introducing gas into internal combustion engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11210563A (en) * | 1998-01-23 | 1999-08-03 | Nissan Motor Co Ltd | Exhaust gas recirculation system for engine |
| EP1128057A1 (en) * | 2000-02-25 | 2001-08-29 | IVECO FIAT S.p.A. | Induction manifold for an internal-combustion engine |
| JP2010255581A (en) * | 2009-04-28 | 2010-11-11 | Hino Motors Ltd | Egr gas mixing device |
| CN101970830A (en) * | 2008-01-24 | 2011-02-09 | 马克卡车公司 | Exhaust gas recirculation mixer device |
| CN202215398U (en) * | 2011-09-13 | 2012-05-09 | 东风汽车有限公司 | Exhaust gas recirculation mixer |
-
2011
- 2011-09-13 CN CN2011102689161A patent/CN102287296A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11210563A (en) * | 1998-01-23 | 1999-08-03 | Nissan Motor Co Ltd | Exhaust gas recirculation system for engine |
| EP1128057A1 (en) * | 2000-02-25 | 2001-08-29 | IVECO FIAT S.p.A. | Induction manifold for an internal-combustion engine |
| CN101970830A (en) * | 2008-01-24 | 2011-02-09 | 马克卡车公司 | Exhaust gas recirculation mixer device |
| JP2010255581A (en) * | 2009-04-28 | 2010-11-11 | Hino Motors Ltd | Egr gas mixing device |
| CN202215398U (en) * | 2011-09-13 | 2012-05-09 | 东风汽车有限公司 | Exhaust gas recirculation mixer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850829A (en) * | 2012-12-04 | 2014-06-11 | 通用汽车环球科技运作有限责任公司 | Engine including external EGR system |
| CN110359985A (en) * | 2018-04-11 | 2019-10-22 | 埃贝斯佩歇排气技术有限责任两合公司 | The gas/gas mixer in waste gas stream for introducing gas into internal combustion engine |
| US10934977B2 (en) | 2018-04-11 | 2021-03-02 | Eberspächer Exhaust Technology GmbH & Co. KG | Gas/gas mixer for introducing gas into the exhaust gas stream of an internal combustion engine |
| CN110359985B (en) * | 2018-04-11 | 2021-08-31 | 埃贝斯佩歇排气技术有限责任两合公司 | Gas/gas mixer for introducing gas into the exhaust gas flow of an internal combustion engine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111221 |