CN109386410A - Annular EGR (exhaust gas recirculation) mixer for engine - Google Patents
Annular EGR (exhaust gas recirculation) mixer for engine Download PDFInfo
- Publication number
- CN109386410A CN109386410A CN201811332367.8A CN201811332367A CN109386410A CN 109386410 A CN109386410 A CN 109386410A CN 201811332367 A CN201811332367 A CN 201811332367A CN 109386410 A CN109386410 A CN 109386410A
- Authority
- CN
- China
- Prior art keywords
- exhaust gas
- outer barrel
- engine
- air inlet
- inlet tube
- 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
Links
- 239000007789 gas Substances 0.000 abstract description 50
- 230000000694 effects Effects 0.000 abstract description 11
- 239000002912 waste gas Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model provides an annular EGR blender for engine, includes that intake connection (1) and exhaust-gas distribution body (2), exhaust-gas distribution body (2) are including outer barrel (3) and inside airtight annular cavity (4), inside airtight annular cavity (4) cover is put outside barrel (3), the through-hole has all been seted up to the inner wall and the outer wall of inside airtight annular cavity (4), waste gas inlet tube (5) have been arranged between outer barrel (3) and inside airtight annular cavity (4), and the outer wall sealing connection of outer barrel (3) one end and inside airtight annular cavity (4), exhaust-gas distribution body (2) cover is put in the gas mixing section of intake connection (1), outer barrel (3) outer wall and intake connection (1) go up the recess in the gas mixing section and form an annular cavity. A good mixing effect is obtained; the mixing uniformity of EGR waste gas and fresh air is effectively improved, so that the performance of the engine is improved, and the emission performance of the engine is improved.
Description
Technical field
The present invention relates to a kind of mixer, the annular EGR mixer of more specifically to a kind of engine belongs to automobile
Technical field.
Background technique
Currently, usual projection tube is inserted into air inlet tube in existing diesel engine EGR mixer, EGR exhaust mapping enter into
Gas adapter tube, projection tube are directly mixed with fresh air in a manner of being inserted into 1/3 to 1/2 tube length；But this kind of mode
Mixed effect is bad.Preferable fresh air is mixed with the effective of exhaust gas in order to obtain, generallys use the length for increasing air inlet tube
Degree is covered the shortage, i.e., meets mixed effect using longer mixed pipe line；But this kind of mode cause EGR mixed into
Gas adapter tube is longer, and can only sacrifice mixed effect in space layout deficiency situation to meet arrangement demand, influences engine combustion
With discharge, lead to engine performance deterioration.
Summary of the invention
It is an object of the invention to generally use longer mixed pipe line for existing EGR mixer to meet mixing effect
Fruit sacrifices mixed effect to meet arrangement, influence engine combustion and discharge, lead to engine performance deterioration, provides
A kind of annular EGR mixer of engine.
To achieve the above object, the technical solution of the invention is as follows: a kind of annular EGR mixer of engine, including
Air inlet tube and exhaust gas dispensing body, the air inlet tube include FAI Fresh Air Intake end and gas mixing section, the gas
Mixing section side wall is equipped with waste gas inlet, and the exhaust gas dispensing body includes the closed annular housing of outer barrel and inside, described
The closed annular housing in inside be nested in outer inner barrel, the inner and outer wall of internal closed annular housing has opened through-hole,
It is disposed with exhaust gas between outer barrel and internal closed annular housing and introduces pipe, and outer barrel one end and internal closed annular housing
Outside wall surface is tightly connected, and the exhaust gas dispensing body is nested in the gas mixing section of air inlet tube, the outer barrel outer wall
Groove on face and air inlet tube in gas mixing section forms a toroidal cavity.
The exhaust gas introduces Guan Weisi, and four exhaust gas introduce pipe and are arranged symmetrically.
Compared with prior art, the beneficial effects of the present invention are:
1, the invention enables EGR exhausts under shorter tube road, and exhaust gas can be sufficiently mixed with fresh air, cramped construction, be obtained good
Mixed effect；It is effectively improved the mixing uniformity of EGR exhaust and fresh air, to improve engine performance, is improved
The emission performance of engine.
2, the present invention promotes reaching for EGR rate under relatively small pressure difference, reduces system cost.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is exhaust gas dispensing body structural schematic diagram in the present invention.
Fig. 3 is air inlet tube structural schematic diagram in the present invention.
Fig. 4 is exhaust gas flow schematic diagram of the present invention.
In figure: air inlet tube 1, exhaust gas dispensing body 2, outer barrel 3, internal closed annular housing 4, exhaust gas introduce pipe 5, exhaust gas
Air inlet 6.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 4, a kind of engine annular EGR mixer, including air inlet tube 1 and exhaust gas dispensing body 2.Institute
The air inlet tube 1 stated include FAI Fresh Air Intake end and gas mixing section, the gas mixing section side wall be equipped with exhaust gas into
Port 6.The exhaust gas dispensing body 2 includes outer barrel 3 and internal closed annular housing 4, the closed annular housing 4 in the inside
It is nested with inside outer barrel 3；The inner and outer wall of internal closed annular housing 4 has opened several through-holes, outer barrel 3 and interior
It is disposed with exhaust gas between the closed annular housing 4 in portion and introduces pipe 5, and the outside wall surface of 3 one end of outer barrel and internal closed annular housing 4
It is tightly connected.
Referring to Fig. 1 to Fig. 4, the exhaust gas dispensing body 2 is nested in the gas mixing section of air inlet tube 1, and described is outer
Groove in 3 outside wall surface of cylinder and air inlet tube 1 in gas mixing section forms a toroidal cavity；Internal closed annular housing 4
The runner of air inlet tube 1 is divided into centre and annular two parts, the groove type on the air inlet tube 1 in gas mixing section
As the exhaust gas lead-in groove of perforation tube body, communicated so that waste gas inlet 6 introduces pipe 5 with exhaust gas.EGR exhaust enters inside
Air inlet connecting has been had respectively entered by the through-hole on the inner and outer wall of internal closed annular housing 4 after closed annular housing 4
The centre of pipe 1 and annular position；And the through-hole on the inner and outer wall of internal closed annular housing 4 forms several mixing
Point.
Referring to Fig. 1 to Fig. 4, specifically, it is four that the exhaust gas, which introduces pipe 5, four exhaust gas introduce pipe 5 and are arranged symmetrically.
Referring to Fig. 1 to Fig. 4, EGR exhaust enters gas mixing section on 3 outside wall surface of outer barrel and air inlet tube 1 in the present invention
In groove, then by four exhaust gas of exhaust gas dispensing body 2 introduce pipe 5 be evenly dispersed to exhaust gas dispensing body 2 inside it is close
In closed-loop shaped cavity 4；Then by the through-hole outflow on the inner and outer wall of internal closed annular housing 4, and from fresh air
The fresh air that inlet end enters is mixed, therefore EGR exhaust enters EGR by different directions from fresh air and mixes
Among clutch.Because EGR exhaust pass through exhaust gas dispensing body 2 after from the inner and outer wall of the closed annular housing 4 in each inside
Through-hole outflow, mixes in different parts with fresh air, and EGR exhaust and fresh air can play adequately in shorter range
Mixed effect forms multiple spot mixed effect, increases the contact area of EGR exhaust and fresh air, is not necessarily to larger space
Preferable mixed effect is obtained, mixed effect is more obvious, significantly more efficient can increase being uniformly mixed for exhaust gas and virgin gas
Property, there is certain benefit to engine performance is improved.
Referring to Fig. 1 to Fig. 4, simultaneously as exhaust gas dispensing body 2 is located at the middle position of flow of fresh air circulation passage, it is fresh
For air due to the blocking of exhaust gas dispensing body 2, air-flow can be in 2 position shape of exhaust gas dispensing body after by 2 leading portion of exhaust gas dispensing body
At a negative pressuren zone, it is more advantageous to reaching under lower exhaust gas and the pressure differential condition of new charge EGR rate in this way, reduces
The design requirement of egr system, to reduce cost play the role of it is advantageous.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, and above structure all shall be regarded as belonging to
Protection scope of the present invention.
Claims (2)
1. a kind of annular EGR mixer of engine, it is characterised in that: including air inlet tube (1) and exhaust gas dispensing body (2), institute
The air inlet tube (1) stated includes FAI Fresh Air Intake end and gas mixing section, and the gas mixing section side wall is equipped with exhaust gas
Air inlet (6), the exhaust gas dispensing body (2) include outer barrel (3) and internal closed annular housing (4), and the inside is close
Closed-loop shaped cavity (4) is nested in outer barrel (3) inside, and the inner and outer wall of internal closed annular housing (4) has opened through-hole,
Exhaust gas is disposed between outer barrel (3) and internal closed annular housing (4) and introduces pipe (5), and outer barrel (3) one end and inside are close
The outside wall surface of closed-loop shaped cavity (4) is tightly connected, and the exhaust gas dispensing body (2) is nested with the gas mixing in air inlet tube (1)
In section, the groove in the outer barrel (3) outside wall surface and air inlet tube (1) in gas mixing section forms a toroidal cavity.
2. a kind of annular EGR mixer of engine according to claim 1, it is characterised in that: the exhaust gas introduces
Managing (5) is four, and four exhaust gas introduce pipe (5) and are arranged symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332367.8A CN109386410A (en) | 2018-11-09 | 2018-11-09 | Annular EGR (exhaust gas recirculation) mixer for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332367.8A CN109386410A (en) | 2018-11-09 | 2018-11-09 | Annular EGR (exhaust gas recirculation) mixer for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109386410A true CN109386410A (en) | 2019-02-26 |
Family
ID=65427199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811332367.8A Pending CN109386410A (en) | 2018-11-09 | 2018-11-09 | Annular EGR (exhaust gas recirculation) mixer for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386410A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060184A (en) * | 2020-07-31 | 2022-02-18 | 比亚迪股份有限公司 | Water-gas mixing device and engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104405539A (en) * | 2014-10-23 | 2015-03-11 | 成都耐尔特科技有限公司 | Mixer |
| CN105065143A (en) * | 2015-08-10 | 2015-11-18 | 广西玉柴机器股份有限公司 | Mixer |
| CN107158988A (en) * | 2017-05-27 | 2017-09-15 | 东风商用车有限公司 | Fluid mixer |
| CN209293933U (en) * | 2018-11-09 | 2019-08-23 | 东风商用车有限公司 | Annular EGR (exhaust gas recirculation) mixer for engine |
-
2018
- 2018-11-09 CN CN201811332367.8A patent/CN109386410A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104405539A (en) * | 2014-10-23 | 2015-03-11 | 成都耐尔特科技有限公司 | Mixer |
| CN105065143A (en) * | 2015-08-10 | 2015-11-18 | 广西玉柴机器股份有限公司 | Mixer |
| CN107158988A (en) * | 2017-05-27 | 2017-09-15 | 东风商用车有限公司 | Fluid mixer |
| CN209293933U (en) * | 2018-11-09 | 2019-08-23 | 东风商用车有限公司 | Annular EGR (exhaust gas recirculation) mixer for engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060184A (en) * | 2020-07-31 | 2022-02-18 | 比亚迪股份有限公司 | Water-gas mixing device and engine |
| CN114060184B (en) * | 2020-07-31 | 2023-04-07 | 比亚迪股份有限公司 | Water-gas mixing device and engine |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190226 |