CN106224132B - A kind of EGR mixing arrangement - Google Patents
A kind of EGR mixing arrangement Download PDFInfo
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- CN106224132B CN106224132B CN201610776114.4A CN201610776114A CN106224132B CN 106224132 B CN106224132 B CN 106224132B CN 201610776114 A CN201610776114 A CN 201610776114A CN 106224132 B CN106224132 B CN 106224132B
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- air inlet
- inlet pipe
- egr
- hollow shell
- outlet
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Abstract
The present invention relates to mixing arrangement fields, disclose a kind of EGR mixing arrangement, including EGR mixer, EGR pipe and air inlet pipe, the EGR mixer includes hollow shell annular in shape, the outer wall of the hollow shell is equipped with entrance, the inner wall of the hollow shell is circumferentially distributed multiple outlets, and the cavity of the hollow shell constitutes airflow channel；The air inlet pipe includes the first air inlet pipe and the second air inlet pipe, first air inlet pipe and the second air inlet pipe are connected to the both ends of the hollow shell, the EGR mixer is connected to by the multiple outlet with first air inlet pipe, the second air inlet pipe, the internal diameter of the hollow shell and the internal diameter of first air inlet pipe, the second air inlet pipe match, and the EGR pipe is connected with the entrance of the hollow shell.The present invention can improve EGR mixing uniformity and low intake resistance.
Description
Technical field
The present invention relates to mixing arrangement technical fields, more particularly to a kind of EGR mixing arrangement.
Background technique
With the upgrading of emission regulation, EGR (exhaust gas recycling) technology is as a kind of effectively control NOxThe means quilt of discharge
It is widely used on diesel engine.Portion is introduced into air inlet pipe from exhaust pipe by an EGR line, but exhaust gas is directly led
(the especially shorter type of mixing distance) often cannot be effectively mixed with fresh air after entering air inlet pipe, cause entry into each cylinder
The consequences such as exhausted air quantity is not identical, and then burning is caused to deteriorate, and discharge increases, influence overall performance.
In order to improve the mixing of EGR exhaust and fresh air, each cylinder EGR distributing uniformity, various EGR mixing arrangements are improved
It is devised, such as existing patent document, the application for a patent for invention of Publication No. CN105114216A, mixer are improving
Intake resistance will increase while EGR mixing uniformity, and the pressure loss is high；However, reducing EGR mixing uniformity after the pressure loss
It can be deteriorated again, the pressure loss and EGR mixing uniformity are difficult to find that all good equalization point of effect.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is to how provide one kind to improve EGR mixing uniformity and low
The EGR mixing arrangement of intake resistance.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of EGR mixing arrangement, including EGR mixer, EGR pipe and
Air inlet pipe, the EGR mixer include hollow shell annular in shape, and the outer wall of the hollow shell is equipped with entrance, described hollow
The inner wall of shell is circumferentially distributed multiple outlets, and the cavity of the hollow shell constitutes airflow channel；The air inlet pipe includes the
One air inlet pipe and the second air inlet pipe, first air inlet pipe and the second air inlet pipe are connected to the both ends of the hollow shell,
The EGR mixer is connected to by the multiple outlet with first air inlet pipe, the second air inlet pipe, the hollow shell it is interior
Diameter and the internal diameter of first air inlet pipe, the second air inlet pipe match, and the EGR pipe is connected with the entrance of the hollow shell.
Wherein, the multiple outlet is symmetrical arranged about the central axis of the entrance；Close to the described of the entrance side
The inner wall of hollow shell is equipped with about symmetrically arranged a pair of of the first outlet of the central axis；It is described far from the entrance side
The inner wall of hollow shell is not provided with outlet；At least a pair is additionally provided with about the central axis positioned at the inner wall of the hollow shell
Symmetrically arranged second outlet.
Wherein, the first outlet and second outlet are the opening being axially arranged or through-hole along the hollow shell.
Wherein, the opening width of the first outlet is less than the opening width of the second outlet, the first outlet
Length is consistent with the length of the second outlet.
Wherein, the EGR mixer further includes one section of bend pipe, and the elbow curvature is rectangular；One end of the bend pipe with
The entrance connection, the other end of the bend pipe are connect with the EGR pipe.
Wherein, the outer end of first air inlet pipe connects air cleaner；The outer end of second air inlet pipe is for connecting
The cylinder of engine.
Wherein, the axial ends of the hollow shell is respectively equipped with flange, first air inlet pipe and the second air inlet pipe point
Not Tong Guo corresponding flange connect with the hollow shell.
(3) beneficial effect
Compared with prior art, the invention has the following advantages that
A kind of EGR mixing arrangement provided by the invention, including EGR mixer, EGR pipe and air inlet pipe, the EGR mixer
Including hollow shell annular in shape, the outer wall of the hollow shell is equipped with entrance, and the inner wall of the hollow shell is circumferentially distributed to be had
Multiple outlets, so that gas is flowed into from the circumferential direction of inner wall, to guarantee that gas mixing is uniform；The air inlet pipe includes the first air inlet pipe
With the second air inlet pipe, first air inlet pipe and the second air inlet pipe are connected to the both ends of the hollow shell, and the EGR is mixed
Clutch is connected to by the multiple outlet with first air inlet pipe, the second air inlet pipe, the internal diameter of the hollow shell with it is described
First air inlet pipe, the second air inlet pipe internal diameter match, to guarantee do not have in any structure barrier air inlet pipe at EGR mixer
Gas flowing, therefore the pressure loss very little at the position do not influence air inlet, the EGR pipe enters with the hollow shell
Mouth is connected, for supplying EGR into EGR mixer.To which the present invention obtains high mix while guaranteeing low pressure loss
Close uniformity.
Detailed description of the invention
Fig. 1 is a kind of main view of EGR mixing arrangement of the present invention；
Fig. 2 is the stereoscopic schematic diagram of the EGR mixer in a kind of EGR mixing arrangement of the present invention；
Fig. 3 is the axial sectional view of Fig. 2；
In figure: 1: the first air inlet pipe；2: the second air inlet pipe；3: hollow shell；4:EGR pipe；5: bend pipe；6: entrance；7: the
One outlet；8: second outlet；9: training wall.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In addition, in the description of the present invention, unless otherwise indicated, " multiple ", " more ", " multiple groups " be meant that two or
It is more than two.
As shown in Figure 1, for a kind of EGR mixing arrangement provided by the invention, including EGR mixer, EGR pipe 4 and air inlet pipe,
As Figure 2-3, the EGR mixer includes hollow shell 3 annular in shape, and the outer wall of the hollow shell 3 is equipped with entrance 6,
The inner wall of the hollow shell 3 is circumferentially distributed multiple outlets, so that gas flows into air inlet pipe from the circumferential of inner wall, to guarantee gas
Body is uniformly mixed, and the cavity of the hollow shell 3 constitutes airflow channel；The air inlet pipe include the first air inlet pipe 1 and second into
Tracheae 2, first air inlet pipe 1 and the second air inlet pipe 2 are connected to the both ends of the hollow shell 3, the EGR mixer
It is connected to by the multiple outlet with first air inlet pipe 1, the second air inlet pipe 2, the internal diameter of the hollow shell 3 and described the
One air inlet pipe 1, the second air inlet pipe 2 internal diameter match, to guarantee do not have in any structure barrier air inlet pipe at EGR mixer
Gas flowing, therefore the pressure loss very little at the position do not influence air inlet, the EGR pipe 4 and the hollow shell 3
Entrance 6 is connected, for supplying EGR into EGR mixer.To which the present invention ensure that the same of EGR mixer low pressure loss
When obtain high mixing uniformity.
Specifically, the multiple outlet is symmetrical arranged about the central axis of the entrance 6；Further, close to institute
The inner wall (being the underface of entrance 6 shown in Fig. 3) for stating the hollow shell 3 of 6 side of entrance is equipped with about the central axis
Symmetrically arranged a pair of first outlet 7, so that there are the inner walls for not setting out mouth between two first outlets 7, as training wall
9, it divide EGR can under the action of training wall 9 to two sides inflow stream channel, first outlet be set in the two sides of training wall 9
7, pass through small portion of gas, 9 guide functions of training wall are too strong and cause air inlet pipe top EGR very few to prevent；Far from described
The inner wall (being the underface far from 6 side of entrance shown in Fig. 3) of the hollow shell 3 of 6 side of entrance is not provided with outlet, to avoid
Gas only causes mixed effect poor under inertial flow effect from lower part outlet outflow；Positioned at the hollow shell 3 inner wall also
Equipped at least a pair, about the symmetrically arranged second outlet 8 of the central axis, the second outlet 8 is located at first outlet 7
Two sides are used for splitting streams, shown in Fig. 3, are equipped with two pairs of second outlets 8, and certainly, outlet setting is more, and gas mixing is more equal
It is even, but outlet setting is more, and EGR mixer anufacturability is poorer, therefore, it is appropriate number of out to can according to need selection
Mouthful.
Wherein, the first outlet 7 and second outlet 8 are along the opening being axially arranged of the hollow shell 3 or logical
Hole.Specifically, the opening width of the first outlet 7 is less than the opening width of the second outlet 8, the first outlet 7
Length is consistent with the length of the second outlet 8 so that first outlet 7 be less than second outlet 8, face direction of flow it is interior
Wall is arranged first outlet 7 and causes the flow of second outlet 8 less than normal, while being also prevented from air inlet to prevent inner wall guide functions too strong
Pipe top EGR is very few.
As shown in Fig. 2, the EGR mixer further includes one section of bend pipe 5, the bend pipe 5 is bent at right angles；The bend pipe 5
One end connect with the entrance 6, the other end of the bend pipe 5 is connect with the EGR pipe 4, so that EGR pipe 4 is mixed with EGR
In being horizontally disposed with after device connection, facilitate air inlet.
Wherein, first air inlet pipe 1 connects air cleaner for being passed through fresh air, outer end, to cross air filtering
In impurity；The outer end of second air inlet pipe 2 is used to connect the cylinder of engine, by fresh air and the mixed gas of EGR
Body is sent into cylinder.
In order to facilitate the connection of air inlet pipe, the axial ends of the hollow shell 3 is respectively equipped with flange, first air inlet
Pipe 1 and the second air inlet pipe 2 are connect by corresponding flange with the hollow shell 3 respectively, form the cavity for surrounding air inlet pipe.
As can be seen from the above embodiments, the present invention can improve EGR mixing uniformity and low intake resistance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of EGR mixing arrangement, including EGR mixer, EGR pipe and air inlet pipe, which is characterized in that the EGR mixer packet
Include hollow shell annular in shape, the outer wall of the hollow shell is equipped with entrance, the inner wall of the hollow shell is circumferentially distributed have it is more
The cavity of a outlet, the hollow shell constitutes airflow channel；The air inlet pipe includes the first air inlet pipe and the second air inlet pipe, institute
It states the first air inlet pipe and the second air inlet pipe is connected to the both ends of the hollow shell, the EGR mixer passes through described more
A outlet is connected to first air inlet pipe, the second air inlet pipe, the internal diameter of the hollow shell and first air inlet pipe, second
The internal diameter of air inlet pipe matches, and the EGR pipe is connected with the entrance of the hollow shell；The multiple outlet is about the entrance
Central axis be symmetrical arranged；It is equipped with close to the inner wall of the hollow shell of the entrance side symmetrical about the central axis
A pair of of first outlet of setting；The inner wall of the hollow shell far from the entrance side is not provided with outlet；Positioned at described hollow
The inner wall of shell is additionally provided at least a pair about the symmetrically arranged second outlet of the central axis.
2. EGR mixing arrangement according to claim 1, which is characterized in that the first outlet and second outlet are edge
The opening being axially arranged or through-hole of the hollow shell.
3. EGR mixing arrangement according to claim 1, which is characterized in that the opening width of the first outlet is less than institute
The opening width of second outlet is stated, the length of the first outlet is consistent with the length of the second outlet.
4. EGR mixing arrangement according to claim 1, which is characterized in that the EGR mixer further includes one section of bend pipe,
The elbow curvature is rectangular；One end of the bend pipe is connect with the entrance, and the other end of the bend pipe and the EGR pipe connect
It connects.
5. EGR mixing arrangement according to claim 1, which is characterized in that the outer end of first air inlet pipe connects air
Filter；The outer end of second air inlet pipe is used to connect the cylinder of engine.
6. EGR mixing arrangement according to claim 1, which is characterized in that the axial ends of the hollow shell is set respectively
There is flange, first air inlet pipe and the second air inlet pipe pass through corresponding flange respectively and connect with the hollow shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776114.4A CN106224132B (en) | 2016-08-29 | 2016-08-29 | A kind of EGR mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776114.4A CN106224132B (en) | 2016-08-29 | 2016-08-29 | A kind of EGR mixing arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224132A CN106224132A (en) | 2016-12-14 |
| CN106224132B true CN106224132B (en) | 2018-12-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610776114.4A Active CN106224132B (en) | 2016-08-29 | 2016-08-29 | A kind of EGR mixing arrangement |
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| CN (1) | CN106224132B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150316B (en) * | 2017-12-25 | 2021-01-19 | 潍柴动力股份有限公司 | EGR mixing device and internal combustion engine |
| CN109695517B (en) * | 2018-12-29 | 2020-03-06 | 潍柴动力股份有限公司 | Gas mixer |
| CN114233533B (en) * | 2021-12-07 | 2023-04-18 | 重庆小康工业集团股份有限公司 | EGR distributor |
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| 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 |
| CN202645779U (en) * | 2012-05-03 | 2013-01-02 | 第一拖拉机股份有限公司 | Diesel engine exhaust gas recirculation mixer |
| CN202900451U (en) * | 2012-10-19 | 2013-04-24 | 东风汽车有限公司 | EGR mixer for EGR engine |
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| KR20050019435A (en) * | 2003-08-19 | 2005-03-03 | 현대자동차주식회사 | exhaust gas recirculation system for an vehicle |
| WO2013055361A1 (en) * | 2011-10-14 | 2013-04-18 | International Engine Intellectual Property Company, Llc | Egr air-exhaust mixer |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6928993B2 (en) * | 2003-10-02 | 2005-08-16 | Hyundai Motor Company | Engine throttle body |
| CN102187080A (en) * | 2008-10-16 | 2011-09-14 | 博格华纳公司 | Module integrating mixer and particulate separator into a common housing and an engine breathing system having the module |
| CN202645779U (en) * | 2012-05-03 | 2013-01-02 | 第一拖拉机股份有限公司 | Diesel engine 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 |
| CN202900451U (en) * | 2012-10-19 | 2013-04-24 | 东风汽车有限公司 | EGR mixer for EGR engine |
| CN203627010U (en) * | 2013-12-31 | 2014-06-04 | 广西玉柴机器股份有限公司 | EGR (Exhaust Gas Recirculation) mixer |
| CN204783341U (en) * | 2015-08-10 | 2015-11-18 | 广西玉柴机器股份有限公司 | Mixer |
| CN105626321A (en) * | 2016-03-22 | 2016-06-01 | 奇瑞汽车股份有限公司 | EGR mixer of gasoline engine |
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| Publication number | Publication date |
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| CN106224132A (en) | 2016-12-14 |
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