CN105114216A - Exhaust gas mixer structure for EGR - Google Patents
Exhaust gas mixer structure for EGR Download PDFInfo
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- CN105114216A CN105114216A CN201510525092.XA CN201510525092A CN105114216A CN 105114216 A CN105114216 A CN 105114216A CN 201510525092 A CN201510525092 A CN 201510525092A CN 105114216 A CN105114216 A CN 105114216A
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- egr
- mixer
- air inlet
- egr mixer
- flange
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Abstract
The invention discloses an exhaust gas mixer structure for an EGR. The exhaust gas mixer structure comprises a gas inlet connection pipe, one end of the gas inlet connection pipe serves as the air inlet end, and the other end of the gas inlet connection pipe serves as the mixed gas outlet end; an end opening of the air inlet end is provided with an exhaust gas inlet connector flange which is communicated with the interior of the air inlet end, an EGR mixer is installed in the air inlet end, the top end of the EGR mixer is provided with an EGR mixer flange, and the EGR mixer flange is installed in the exhaust gas inlet connector flange; the EGR mixer is in the shape of an arc-shaped bent pipe, the bent pipe axis of the tail end of the EGR mixer is parallel to the flow path axis of the gas inlet connection pipe, and the end of the tail end of the EGR mixer is provided with through holes which can spray exhaust gas to the air inlet end. According to the exhaust gas mixer structure for the EGR, the EGR rate distribution uniformity of all cylinders of an engine is improved, the engine performance is improved, and emission of nitrogen oxide (NOx) is effectively reduced.
Description
Technical field
The present invention relates to a kind of component of motor car engine, particularly relate to a kind of EGR exhaust mixer structure.
Background technique
Gas recirculation system (ExhaustGasRecirculation) is called for short EGR, the sub-fraction of waste gas that motor produces is sent again back to the technology that cylinder burns once again, particularly, enter cylinder again after being mixed with fresh air by the waste gas that motor is discharged, its main purpose is nitrogen oxide (NOx) discharge in order to reduce in tail gas.
Current engine EGR system off gas mixed method: outlet pipe is directly received air inlet tube by waste gas circulation pipe, waste gas in outlet pipe directly mixes with the fresh air of air inlet tube, but this scheme mixed effect is poor, do not reach ideal mixed effect, cause the EGR rate distributing uniformity of each cylinder poor, and then affect performance and the comprehensive discharge of motor.
Summary of the invention
The present invention, in order to solve the above-mentioned deficiency of prior art, proposes a kind of EGR exhaust mixer structure.
In order to solve the problems of the technologies described above, the present invention is by the following technical solutions: a kind of EGR exhaust mixer structure, comprise air inlet tube, one end of described air inlet tube is air inlet end, the other end is mixed gas outlet side, described air inlet end port is provided with and is communicated with inner gas inlet flange, in described air inlet end, EGR mixer is installed, the top of described EGR mixer is provided with EGR mixer flange, described EGR mixer flange inserts the inside being arranged on described gas inlet flange, the curved syphon shape of described EGR mixer, the end bending axis of this EGR mixer parallels with the flow path axis of air inlet tube, and the end end of this EGR mixer is provided with towards the through hole of air inlet end ejection waste gas.
Preferably, the EGR mixer pad preventing exhaust gas leakage is installed between described gas inlet flange and EGR mixer flange.
EGR mixer of the present invention is formed by flange and elbow pipe welding, and bend pipe front section is circular, and end portion is band cone structure, and conical surface is provided with the through hole that waste gas flows through, and the direction of through hole is vertical with FAI Fresh Air Intake direction.
EGR mixer end cone on the surface through hole has 4 row, often capable evenly distributed 4 through holes, and through-hole diameter reduces successively (12mm, 8mm, 6mm), and least significant end end face is enclosed construction, and waste gas can only flow out by through hole from the side.
After EGR mixer assembles, end cone segment axis will parallel with air inlet tube FAI Fresh Air Intake end axis, and through hole is evenly in the centre of air inlet tube.
EGR mixer and air inlet tube are by Flange joint, and by two M8 bolton, assembly technology is simple and convenient, are applicable to producing in enormous quantities.
Compared with prior art, beneficial effect of the present invention is: by increasing EGR mixer, waste gas enters fresh air inside by the through hole dispersion of EGR mixer and mixes, increase the area that waste gas mixes with fresh air, make waste gas and fresh air Homogeneous phase mixing in air inlet tube, improve the EGR rate distributing uniformity of each cylinder of motor, improve the performance of motor, effectively reduce the discharge of nitrogen oxide (NOx).
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of EGR mixer of the present invention;
Fig. 3 is the structural representation of air inlet tube of the present invention.
Embodiment
Below in conjunction with drawings and Examples, invention is described in detail.
As Fig. 1, shown in 2 and 3, the EGR exhaust mixer structure that the present invention proposes, comprise air inlet tube 1, one end of air inlet tube 1 is air inlet end 11, the other end is mixed gas outlet side 13, air inlet end 11 port is provided with and is communicated with inner gas inlet flange 12, EGR mixer 2 is installed in air inlet end 11, the top of EGR mixer 2 is provided with EGR mixer flange 22, EGR mixer flange 22 inserts the inside being arranged on gas inlet flange 12, the curved syphon shape of EGR mixer 2, the end bending axis of this EGR mixer 2 parallels with the flow path axis of air inlet tube, and the end end of this EGR mixer 2 is provided with the through hole 21 spraying waste gas towards air inlet end 11.
The EGR mixer pad preventing exhaust gas leakage is installed between gas inlet flange 12 and EGR mixer flange 22.
EGR mixer 2 is arranged on after on air inlet tube 1, through hole 21 is evenly distributed on the neutral position of air inlet tube 1, and EGR mixer bend pipe end axis parallels with air inlet tube FAI Fresh Air Intake end axis, exhaust gas flow direction contrary with fresh air flow direction (gas flow direction see Fig. 1), through hole 21 is evenly arranged in EGR mixer end, evenly distributed 4 row, often capable evenly distributed 4 through holes, through-hole diameter reduces successively, be respectively: 12mm, 8mm, 6mm, vertical with fresh air flow direction from through hole 21 exhaust gas flow direction out.
By increasing EGR mixer of the present invention, waste gas enters fresh air inside through through hole 21 dispersion and mixes, increase the area of contact of waste gas and fresh air, make waste gas fully mixing in air inlet tube 1, improve the EGR rate distributing uniformity of each cylinder of motor, improve engine performance, effectively reduce the discharge of nitrogen oxide (NOx).
Above-described embodiment only have expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, patent of the present invention and protection domain should be as the criterion with appended claims.
Claims (2)
1. an EGR exhaust mixer structure, it is characterized in that: comprise air inlet tube (1), one end of described air inlet tube (1) is air inlet end (11), the other end is mixed gas outlet side (13), described air inlet end (11) port is provided with and is communicated with inner gas inlet flange (12), in described air inlet end (11), EGR mixer (2) is installed, the top of described EGR mixer (2) is provided with EGR mixer flange (22), described EGR mixer flange (22) inserts the inside being arranged on described gas inlet flange (12), described EGR mixer (2) curved syphon shape, the end bending axis of this EGR mixer (2) parallels with the flow path axis of air inlet tube, and the end end of this EGR mixer (2) is provided with towards the through hole (21) of air inlet end (11) ejection waste gas.
2. EGR exhaust mixer structure according to claim 1, is characterized in that: be provided with the EGR mixer pad (3) preventing exhaust gas leakage between described gas inlet flange (12) and EGR mixer flange (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525092.XA CN105114216A (en) | 2015-08-25 | 2015-08-25 | Exhaust gas mixer structure for EGR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510525092.XA CN105114216A (en) | 2015-08-25 | 2015-08-25 | Exhaust gas mixer structure for EGR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105114216A true CN105114216A (en) | 2015-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510525092.XA Pending CN105114216A (en) | 2015-08-25 | 2015-08-25 | Exhaust gas mixer structure for EGR |
Country Status (1)
| Country | Link |
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| CN (1) | CN105114216A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837617A (en) * | 2017-03-03 | 2017-06-13 | 安徽江淮纳威司达柴油发动机有限公司 | A kind of high uniformity EGR mixing arrangements |
| CN109899188A (en) * | 2017-12-07 | 2019-06-18 | 曼胡默尔滤清器（上海）有限公司 | A kind of attachment tube structure of inlet manifold |
| CN113006982A (en) * | 2021-04-15 | 2021-06-22 | 一汽解放汽车有限公司 | Engine EGR mixing device and engine |
| CN113969850A (en) * | 2020-07-22 | 2022-01-25 | 北京福田康明斯发动机有限公司 | Gas mixer of engine |
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| JP2001152984A (en) * | 1999-11-22 | 2001-06-05 | Aisin Seiki Co Ltd | Intake manifold |
| CN201318228Y (en) * | 2008-12-24 | 2009-09-30 | 东风汽车有限公司 | Exhaust gas recirculation mixer of automobile engine |
| CN101970830A (en) * | 2008-01-24 | 2011-02-09 | 马克卡车公司 | Exhaust gas recirculation mixer device |
| CN102230429A (en) * | 2011-04-29 | 2011-11-02 | 奇瑞汽车股份有限公司 | EGR (Exhaust Gas Recirculation) gas mixer |
| CN203214196U (en) * | 2013-01-29 | 2013-09-25 | 内蒙古欧意德发动机有限公司 | EGR system intake manifold |
| CN104005886A (en) * | 2014-06-09 | 2014-08-27 | 中国船舶重工集团公司第七一一研究所 | EGR (Exhaust Gas Recirculation) mixer for marine diesel engine |
| US20140373819A1 (en) * | 2013-06-20 | 2014-12-25 | Paccar Inc | Mixer for pulsed egr |
| CN204283664U (en) * | 2014-11-13 | 2015-04-22 | 北汽福田汽车股份有限公司 | EGR adapter, engine EGR system and vehicle |
| US20150267650A1 (en) * | 2014-03-24 | 2015-09-24 | International Engine Intellectual Property Company, Llc | Venturi egr pump |
| CN204921197U (en) * | 2015-08-25 | 2015-12-30 | 江西五十铃发动机有限公司 | EGR waste gas blender structure |
-
2015
- 2015-08-25 CN CN201510525092.XA patent/CN105114216A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001152984A (en) * | 1999-11-22 | 2001-06-05 | Aisin Seiki Co Ltd | Intake manifold |
| CN101970830A (en) * | 2008-01-24 | 2011-02-09 | 马克卡车公司 | Exhaust gas recirculation mixer device |
| CN201318228Y (en) * | 2008-12-24 | 2009-09-30 | 东风汽车有限公司 | Exhaust gas recirculation mixer of automobile engine |
| CN102230429A (en) * | 2011-04-29 | 2011-11-02 | 奇瑞汽车股份有限公司 | EGR (Exhaust Gas Recirculation) gas mixer |
| CN203214196U (en) * | 2013-01-29 | 2013-09-25 | 内蒙古欧意德发动机有限公司 | EGR system intake manifold |
| US20140373819A1 (en) * | 2013-06-20 | 2014-12-25 | Paccar Inc | Mixer for pulsed egr |
| US20150267650A1 (en) * | 2014-03-24 | 2015-09-24 | International Engine Intellectual Property Company, Llc | Venturi egr pump |
| CN104005886A (en) * | 2014-06-09 | 2014-08-27 | 中国船舶重工集团公司第七一一研究所 | EGR (Exhaust Gas Recirculation) mixer for marine diesel engine |
| CN204283664U (en) * | 2014-11-13 | 2015-04-22 | 北汽福田汽车股份有限公司 | EGR adapter, engine EGR system and vehicle |
| CN204921197U (en) * | 2015-08-25 | 2015-12-30 | 江西五十铃发动机有限公司 | EGR waste gas blender structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837617A (en) * | 2017-03-03 | 2017-06-13 | 安徽江淮纳威司达柴油发动机有限公司 | A kind of high uniformity EGR mixing arrangements |
| CN109899188A (en) * | 2017-12-07 | 2019-06-18 | 曼胡默尔滤清器（上海）有限公司 | A kind of attachment tube structure of inlet manifold |
| CN113969850A (en) * | 2020-07-22 | 2022-01-25 | 北京福田康明斯发动机有限公司 | Gas mixer of engine |
| CN113006982A (en) * | 2021-04-15 | 2021-06-22 | 一汽解放汽车有限公司 | Engine EGR mixing device and engine |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151202 |