CN202215398U - Exhaust gas recirculation mixer - Google Patents
Exhaust gas recirculation mixer Download PDFInfo
- Publication number
- CN202215398U CN202215398U CN2011203406555U CN201120340655U CN202215398U CN 202215398 U CN202215398 U CN 202215398U CN 2011203406555 U CN2011203406555 U CN 2011203406555U CN 201120340655 U CN201120340655 U CN 201120340655U CN 202215398 U CN202215398 U CN 202215398U
- Authority
- CN
- China
- Prior art keywords
- exhaust gas
- gas recirculation
- recirculation mixer
- utility
- model
- 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 - Lifetime
Links
- 239000007789 gas Substances 0.000 abstract description 28
- 239000002912 waste gas Substances 0.000 abstract description 22
- 238000002156 mixing Methods 0.000 abstract description 15
- 230000008602 contraction Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses an exhaust gas recirculation mixer, including the tube-shape body, the lower extreme of body has the scarf towards the export direction of intake pipe, has seted up a plurality of gas outlets on the body. The utility model discloses can improve waste gas and fresh air's mixing efficiency, make waste gas and fresh air's misce bene and compact structure.
Description
Technical field
The utility model relates to a kind of mixer, relates 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, mixes the back with air inlet and gets into the firing chamber.Because after waste gas and fresh air mix, the reduction of the oxygen content of mixed gas, thus the FT 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 said 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.
The model utility content
The purpose of the utility model provides 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 utility model provides a kind of exhaust gas recirculation mixer to comprise the tubular body, and 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 contraction in the middle of the utility model 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.
Preferably, the air outlet is opened on the exhaust portion of body.
Preferably, said 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 exhaust gas recirculation mixer of the utility model and being connected of suction tude.
Preferably, the air outlet is rounded.
Preferably, the angle of angular cut plane, place and horizontal plane is 30 °～60 °.Said 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 utility model; Thereby; The exhaust gas recirculation mixer of the utility model can increase waste gas and blending space from the fresh air of the suction port of suction tude, thereby makes the mixing of waste gas and fresh air more even and improved the mixing efficiency of waste gas and fresh air, and then has guaranteed the Economy of motor.
Through following description and combine accompanying drawing, it is more clear that the utility model will become, and these accompanying drawings are used to explain the embodiment of the utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model exhaust gas recirculation mixer.
Fig. 2 is the schematic representation that the utility model exhaust gas recirculation mixer is connected with suction tude.
Embodiment
With reference now to accompanying drawing, describe the embodiment of the utility model, 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 of angular cut plane, 12 place and horizontal plane is 30 °～60 °.
Understandably, the structure of contraction in the middle of the exhaust gas recirculation mixer of the utility model 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 said 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 the exhaust gas recirculation mixer of the utility model cooperates the top that is fixed on suction tude 20 through 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, the exhaust gas recirculation mixer of the utility model keeps vertical with the airintake direction A2 of suction tude 20.In addition, between the mounting flange 21 of the flange 11 of the exhaust gas recirculation mixer of the utility model and suction tude 20, also be provided with sealing gasket 22, to prevent gas leakage.
During work; Waste gas from enmgine exhaust (not shown) gets into exhaust gas recirculation mixer along direction A1; And a part of waste gas gets into along direction B1 from exhaust gas recirculation mixer in the suction tude 20 through angular cut 12, and another part waste gas then gets in the suction tude 20 through air outlet 13.Get in the suction tude 20 along direction A2 from the fresh air of turbosupercharger (not shown), with suction tude 20 in waste gas mix uniformly, mixed gas gets into the firing chamber along direction B2 and burns.
Can know by technique scheme; Owing to offer a plurality of air outlets 13 on the body 10 of the utility model; Thereby; The exhaust gas recirculation mixer of the utility model can increase waste gas and blending space from the fresh air of the suction port of suction tude, thereby makes the mixing of waste gas and fresh air 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 of angular cut (12) plane, place and horizontal plane is 30 °～60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203406555U CN202215398U (en) | 2011-09-13 | 2011-09-13 | Exhaust gas recirculation mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203406555U CN202215398U (en) | 2011-09-13 | 2011-09-13 | Exhaust gas recirculation mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215398U true CN202215398U (en) | 2012-05-09 |
Family
ID=46014657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203406555U Expired - Lifetime CN202215398U (en) | 2011-09-13 | 2011-09-13 | Exhaust gas recirculation mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215398U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287296A (en) * | 2011-09-13 | 2011-12-21 | 东风汽车有限公司 | Exhaust gas recirculation mixer |
| CN102748169A (en) * | 2012-07-05 | 2012-10-24 | 东风汽车有限公司 | Mixing device for Exhaust Gas Recirculation (EGR) of vehicle engine |
| CN104074637A (en) * | 2013-03-27 | 2014-10-01 | 福特汽车萨纳伊股份有限公司 | Exhaust mixer |
-
2011
- 2011-09-13 CN CN2011203406555U patent/CN202215398U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287296A (en) * | 2011-09-13 | 2011-12-21 | 东风汽车有限公司 | Exhaust gas recirculation mixer |
| CN102748169A (en) * | 2012-07-05 | 2012-10-24 | 东风汽车有限公司 | Mixing device for Exhaust Gas Recirculation (EGR) of vehicle engine |
| CN102748169B (en) * | 2012-07-05 | 2014-06-25 | 东风汽车公司 | Mixing device for vehicle engine exhaust gas recirculation (EGR) |
| CN104074637A (en) * | 2013-03-27 | 2014-10-01 | 福特汽车萨纳伊股份有限公司 | Exhaust mixer |
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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 COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130906 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430056 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130906 Address after: Shiyan City, Hubei province 442001 City Road No. 2 District zhangjiewan Patentee after: DONGFENG TRUCKS Co.,Ltd. Address before: 430056 Dongfeng Road, Wuhan Economic & Technological Development Zone, Hubei, Wuhan, China, No. 10 Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |