CN201318228Y - Exhaust gas recirculation mixer of automobile engine - Google Patents
Exhaust gas recirculation mixer of automobile engine Download PDFInfo
- Publication number
- CN201318228Y CN201318228Y CNU2008202305606U CN200820230560U CN201318228Y CN 201318228 Y CN201318228 Y CN 201318228Y CN U2008202305606 U CNU2008202305606 U CN U2008202305606U CN 200820230560 U CN200820230560 U CN 200820230560U CN 201318228 Y CN201318228 Y CN 201318228Y
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- CN
- China
- Prior art keywords
- waste gas
- section
- gas outlet
- exhaust gas
- intermediate section
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- 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.)
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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
Abstract
The utility model provides an automobile engine exhaust gas recirculation mixer, the one end of body (1) is air intake section (2), and the other end is gas mixture export section (3), is interlude (5) between air intake section (2) and gas mixture export section (3), is provided with exhaust pipe mouth (4) in interlude (5) of body (1), and the cross section of interlude (5) is greater than the cross section of air intake section (2) and gas mixture export section (3). An exhaust gas inlet pipe (7) is arranged in the exhaust gas pipe orifice (4) and extends to the inside of the middle section (5) and is provided with an exhaust gas outlet (8). The mixing uniformity of the waste gas and the air is improved, and the phenomenon that the waste gas is locally over-concentrated or over-diluted is overcome and avoided. The structure is simple, the volume is small, the manufacturing cost is low, the use is convenient, the effect is good, and the device is suitable for manufacturing Exhaust Gas Recirculation (EGR) mixers of various automobile engines.
Description
Technical field
The utility model relates to a kind of gas mixer, specifically is meant a kind of exhaust gas recirculation mixer of automobile engine.
Background technique
The used mixer of engine exhaust recirculation also claims the EGR mixer, be the part waste gas in the outlet pipe to be imported the EGR mixer through supercooling by exterior line, with enter engine cylinder after fresh air mixes, thereby reach the control combustion temperature, reduce the purpose of oxynitrides discharging.Existing Y type or T type mixer commonly used all are that the two-way fluid is merged into one the tunnel, and this mixer only is applicable to the fluid that the two-way flowing state is identical or approaching substantially usually, and only is suitable for the place of convection cell mixing quality no requirement (NR).Mixer for the EGR motor is used because the thermodynamic state of waste gas and fresh air differs bigger, requires waste gas fully to contact, to mix with fresh air, avoids causing the local overrich of waste gas or crosses rare state, causes each cylinder skewness of waste gas.Therefore Y type or T type mixer commonly used are not suitable as motor car engine EGR mixer.
Summary of the invention
The purpose of this utility model is to overcome existing mixer can't make waste gas and mixed uniformly defective of fresh air and deficiency, and a kind of waste gas and mixed uniformly exhaust gas recirculation mixer of automobile engine of fresh air of adapting to is provided.It is simple in structure, and fabricating cost is low, and waste gas is evenly distributed, the mixing that further improves the two-way fluid with contact effect.
For achieving the above object, the technical solution of the utility model is as follows: a kind of exhaust gas recirculation mixer of automobile engine, the body that a tubulose is arranged, one end of body is the air intlet section, the other end is the mixed gas outlet section, be intermediate section between air intlet section and the mixed gas outlet section, be provided with the waste gas mouth of pipe at the intermediate section of body, the cross section of intermediate section is greater than the cross section of air intlet section and mixed gas outlet section.
The two ends of described intermediate section are connected with the mixed gas outlet section with the air intlet section respectively through the tapering transition section.
The two ends of described intermediate section are connected with the mixed gas outlet section with the air intlet section respectively through annular end plate.
There is waste gas ingress pipe to extend intermediate section inside in the described waste gas mouth of pipe, on the waste gas ingress pipe that stretches into intermediate section inside, is provided with waste gas outlet.
Be positioned at the end sealing of intermediate section inside on the described waste gas ingress pipe, waste gas outlet is arranged on the tube wall of waste gas ingress pipe, and the mouth of pipe that perhaps is positioned at the inner end of intermediate section on the waste gas ingress pipe is a waste gas outlet.
The waste gas outlet that is arranged on the tube wall of waste gas ingress pipe is circle or bar hole, and waste gas outlet is symmetrically distributed along the longitudinal axis of waste gas ingress pipe.
Be vertically arranged with the waste gas outlet of two bar shapeds on the described waste gas ingress pipe, the tube wall of two waste gas outlet lateral direction penetrating waste gas ingress pipes, and be symmetrically distributed up and down along the longitudinal axis of intermediate section.
The Normal direction of described waste gas outlet and the longitudinal axis of intermediate section are perpendicular.
Described waste gas ingress pipe is connected with the waste gas mouth of pipe through flange.
Compared with prior art, the beneficial effects of the utility model are:
1, the flow velocity by changing air and strengthen blending space mixes fresh air with the multiply exhaust flow in flow process, improved the uniformity of waste gas and air mixing, overcomes and has avoided waste gas part overrich or rare excessively phenomenon.
2, simple in structure, volume is little, and fabricating cost is low, and is easy to use, effective, is suitable for making the exhaust gas recirculation EGR mixer of various motor car engines.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of waste gas ingress pipe 7 among Fig. 1.
Among the figure: body 1, air intlet section 2, mixed gas outlet section 3, the waste gas mouth of pipe 4, intermediate section 5, tapering transition section 6, waste gas ingress pipe 7, waste gas outlet 8, flange 9, dividing plate 10.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail.
Referring to Fig. 1, Fig. 2, a kind of exhaust gas recirculation mixer of automobile engine of the present utility model, the body 1 that a tubulose is arranged, one end of body 1 is an air intlet section 2, and the other end is a mixed gas outlet section 3, is intermediate section 5 between air intlet section 2 and the mixed gas outlet section 3, intermediate section 5 at body 1 is provided with the waste gas mouth of pipe 4, and the cross section of intermediate section 5 is greater than the cross section of air intlet section 2 and mixed gas outlet section 3.Body 1 optimum structure is spindle, and the two ends of promptly described intermediate section 5 are connected with mixed gas outlet section 3 with air intlet section 2 respectively through tapering transition section 6.Can adopt the different tapering transition section 6 of tapering between intermediate section 5 and air intlet section 2 and the mixed gas outlet section 3, make it adapt to the needs of different motors.
The caliber of air inducer 2 is less on the body 1, the caliber of intermediate section 5 is bigger, when fresh air enters in the intermediate section 5 from air intlet section 2 and tapering transition section 6, because caliber changes, its pressure reduces, in flowing, can fully mix with the waste gas of outflow in the waste gas mouth of pipe 4, and then through after the 6 further mixing of tapering transition section, send from the mixed gas outlet section 3 that caliber is less, thereby waste gas is fully contacted with fresh air, evenly mix, overcome and the local overrich of waste gas or rare excessively phenomenon when having avoided mixing.The length of mixed gas outlet section 3 can be adjusted according to the rotating speed of motor and port timing and waste gas Pulse wave on the body 1, to determine appropriate length.
In such scheme, both can adopt tapering transition to be connected between intermediate section 5 and air intlet section 2 and the mixer outlet section 3, also can not adopt tapering transition and directly link to each other.The two ends of intermediate section 5 are connected with mixed gas outlet section 3 with air intlet section 2 respectively through annular end plate as described.
There is waste gas ingress pipe 7 to extend intermediate section 5 inside in the described waste gas mouth of pipe 4, on the waste gas ingress pipe 7 that stretches into intermediate section 5 inside, is provided with waste gas outlet 8.Be that waste gas ingress pipe 7 stretches in the cavity of intermediate section 5 in the waste gas mouth of pipe 4, on the tube wall of waste gas ingress pipe 7, be respectively arranged with flange plate with the waste gas mouth of pipe 4, interconnect through link such as bolt etc., to constitute flange 9, waste gas ingress pipe 7 is connected with the waste gas mouth of pipe 4 by flange 9, makes it to be sealed and matched.
A kind of mode that waste gas outlet 8 is provided with is: be positioned at the end sealing of intermediate section 5 inside on the described waste gas ingress pipe 7, promptly waste gas ingress pipe 7 stretches into front end partly by dividing plate 10 sealings, and waste gas outlet 8 is arranged on the tube wall of waste gas ingress pipe 7.As Fig. 1, shown in Fig. 2, the waste gas outlet 8 that is arranged on the tube wall of waste gas ingress pipe 7 is circle or bar hole, and waste gas outlet 8 is symmetrically distributed along the longitudinal axis of waste gas ingress pipe 7.Be vertically arranged with the waste gas outlet 8 of two bar shapeds on the described waste gas ingress pipe 7, the tube wall of two waste gas outlet 8 lateral direction penetrating waste gas ingress pipes 7, so that waste gas flows into the inner chamber of intermediate sections 5 in waste gas ingress pipe 7, and the waste gas outlet 8 of two bar shapeds is symmetrically distributed up and down along the longitudinal axis of intermediate section 5.
The another kind of mode that waste gas outlet 8 is provided with is: will be positioned at the mouth of pipe of intermediate section 5 inner ends on the waste gas ingress pipe 7 as waste gas outlet 8.
One end of waste gas ingress pipe 7 exposed parts is provided with annular boss, so that be connected with the waste gas flexible pipe.The Normal direction that its preferable mode is described waste gas outlet 8 and the longitudinal axis of intermediate section 5 are perpendicular.The normal orientation of waste gas outlet 8 also can be parallel with airflow direction, but mixed effect is poor slightly.
Described waste gas outlet can be a circular aperture, can be Fig. 1 also, the bar hole shown in Fig. 2.The Normal direction of described waste gas outlet 8 is vertical with the longitudinal axis of intermediate section 5, be that exhaust flow outgoing direction and air-flow direction are perpendicular, the fresh air that is entered intermediate section 5 by air intlet section 2 mixes with the waste gas of vertical outflow when flowing through waste gas ingress pipe 7 outer walls, to improve the uniformity of mixing.Opening direction as waste gas outlet among Fig. 18 is vertical with the longitudinal axis of intermediate section 5.
According to mixed effect, on the waste gas ingress pipe 7 axis in the waste gas outlet hole 8 of opening also can with the parallel axes of intermediate section 5, promptly form the waste gas outlet 8 flow directions situation identical with the fresh air flow direction.Simultaneously,, also can not offer waste gas outlet hole 8 on the tube wall of waste gas ingress pipe 7 according to opening one's minds, only open-ended at it, or adopt the angular cut form.At this moment, waste gas ingress pipe 7 can be adjusted as required at the insertion depth of intermediate section 5 inside.
Claims (9)
1. exhaust gas recirculation mixer of automobile engine, the body (1) that a tubulose is arranged, one end of body (1) is air intlet section (2), the other end is mixed gas outlet section (3), it is characterized in that: be intermediate section (5) between air intlet section (2) and the mixed gas outlet section (3), intermediate section (5) in body (1) is provided with the waste gas mouth of pipe (4), and the cross section of intermediate section (5) is greater than the cross section of air intlet section (2) and mixed gas outlet section (3).
2. a kind of exhaust gas recirculation mixer of automobile engine according to claim 1 is characterized in that: the two ends of described intermediate section (5) are connected with mixed gas outlet section (3) with air intlet section (2) respectively through tapering transition section (6).
3. a kind of exhaust gas recirculation mixer of automobile engine according to claim 1 is characterized in that: the two ends of described intermediate section (5) are connected with mixed gas outlet section (3) with air intlet section (2) respectively through annular end plate.
4. a kind of exhaust gas recirculation mixer of automobile engine according to claim 1, it is characterized in that: have waste gas ingress pipe (7) to extend intermediate section (5) inside in the described waste gas mouth of pipe (4), on the waste gas ingress pipe (7) that stretches into intermediate section (5) inside, be provided with waste gas outlet (8).
5. a kind of exhaust gas recirculation mixer of automobile engine according to claim 4, it is characterized in that: be positioned at the inner end sealing of intermediate section (5) on the described waste gas ingress pipe (7), waste gas outlet (8) is arranged on the tube wall of waste gas ingress pipe (7), and the mouth of pipe that perhaps is positioned at the inner end of intermediate section (5) on the waste gas ingress pipe (7) is waste gas outlet (8).
6. a kind of exhaust gas recirculation mixer of automobile engine according to claim 5, it is characterized in that: the waste gas outlet (8) that is arranged on the tube wall of waste gas ingress pipe (7) is circle or bar hole, and waste gas outlet (8) is symmetrically distributed along the longitudinal axis of waste gas ingress pipe (7).
7. according to claim 5 or 6 described a kind of exhaust gas recirculation mixer of automobile engine, it is characterized in that: the waste gas outlet (8) that is vertically arranged with two bar shapeds on the described waste gas ingress pipe (7), the tube wall of two waste gas outlets (8) lateral direction penetrating waste gas ingress pipes (7), and be symmetrically distributed up and down along the longitudinal axis of intermediate section (5).
8. a kind of exhaust gas recirculation mixer of automobile engine according to claim 8 is characterized in that: the longitudinal axis of the Normal direction of described waste gas outlet (8) and intermediate section (5) is perpendicular.
9. according to each described a kind of exhaust gas recirculation mixer of automobile engine among the claim 4-6, it is characterized in that: described waste gas ingress pipe (7) is connected with the waste gas mouth of pipe (4) through flange (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202305606U CN201318228Y (en) | 2008-12-24 | 2008-12-24 | Exhaust gas recirculation mixer of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202305606U CN201318228Y (en) | 2008-12-24 | 2008-12-24 | Exhaust gas recirculation mixer of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318228Y true CN201318228Y (en) | 2009-09-30 |
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ID=41196993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202305606U Expired - Lifetime CN201318228Y (en) | 2008-12-24 | 2008-12-24 | Exhaust gas recirculation mixer of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318228Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265513A (en) * | 2014-09-22 | 2015-01-07 | 广西玉柴机器股份有限公司 | Natural gas engine egr mixing device |
| CN105114216A (en) * | 2015-08-25 | 2015-12-02 | 江西五十铃发动机有限公司 | Exhaust gas mixer structure for EGR |
-
2008
- 2008-12-24 CN CNU2008202305606U patent/CN201318228Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265513A (en) * | 2014-09-22 | 2015-01-07 | 广西玉柴机器股份有限公司 | Natural gas engine egr mixing device |
| CN104265513B (en) * | 2014-09-22 | 2016-08-17 | 广西玉柴机器股份有限公司 | Natural gas engine EGR mixing arrangement |
| CN105114216A (en) * | 2015-08-25 | 2015-12-02 | 江西五十铃发动机有限公司 | Exhaust gas mixer structure for EGR |
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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: 20130905 |
|
| 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: 20130905 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: Dongfeng Commercial Vehicle Co.,Ltd. Address before: 430056 Dongfeng Road, Wuhan Economic Development Zone, Hanyang District, Hubei, China, No. 10, No. Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |