CN209781068U - Binary channels EGR mixing arrangement - Google Patents
Binary channels EGR mixing arrangement Download PDFInfo
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- CN209781068U CN209781068U CN201920642914.6U CN201920642914U CN209781068U CN 209781068 U CN209781068 U CN 209781068U CN 201920642914 U CN201920642914 U CN 201920642914U CN 209781068 U CN209781068 U CN 209781068U
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- waste gas
- air inlet
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- egr
- passageway
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Abstract
the utility model relates to a binary channels EGR mixing arrangement, characterized in that: open device one side has the fresh air entry, and fresh air entry is near setting up the installation department, and the fresh air entry below is the fresh air passageway, and open the device opposite side has right waste gas entry and left waste gas entry, and right waste gas entry one side is right waste gas passageway, and left waste gas entry one side is left waste gas passageway, for tumble striking mixing boss between right waste gas entry and the left waste gas entry, right waste gas passageway is equipped with the tumble mixing chamber with left waste gas passageway one side. The utility model discloses simple structure has utilized the EGR air current that falls into two strands to produce in advance and is favorable to the tumble of gas mixture, can form more even gas mixture in more compact structure, has simplified the EGR mixing arrangement structure, makes arranging of engine can be compacter, but can form the homogeneous mixture that more is favorable to burning and emission, the good effect of having got.
Description
Technical Field
The patent of the utility model belongs to the engine design field, use on medium and heavy diesel engine, be a binary channels EGR mixing arrangement.
Background
Exhaust Gas Recirculation (EGR) is called EGR for short. The EGR mixing device consists of an air inlet system and an exhaust system. The EGR valve controls and leads out the waste gas, and the waste gas is led into the air inlet system to be mixed with fresh air.
The uniformity of EGR has great influence on the performance and oil consumption of an engine, and the uneven EGR can possibly cause unstable combustion of a cylinder and even a fire phenomenon, so that the oil consumption is increased, the emission is poor and the like. It is therefore necessary to ensure the uniformity of EGR among cylinders.
Traditionally, the EGR introduction mode generally adopts a mode that an EGR system is directly connected with an air inlet system, so that EGR flows along the wall surface of an air inlet pipe after entering the air inlet system, the EGR and fresh air are poor in mixing effect, the EGR uniformity is poor, and the emission and the performance of an engine are influenced.
Patent document 1 (CN 201520116122.7) discloses an EGR mixer, which includes a gas mixer for mixing air and gas, and an EGR mixer communicated with a gas outlet of the gas mixer, wherein the EGR mixer includes an EGR mixer body and an EGR branch pipe disposed in the EGR mixer body, and a plurality of exhaust gas injection holes for injecting exhaust gas into the EGR mixer body are disposed on inner walls of the EGR branch pipe and the EGR mixer body; the utility model discloses a EGR mixing arrangement, the mixed degree of consistency of waste gas, air and natural gas is higher, has reached top level in industry.
Patent document 2 (CN 201520116562.2) discloses an EGR mixer, which includes an EGR mixer body and an EGR branch pipe disposed in the EGR mixer body, wherein a plurality of exhaust gas injection holes for injecting exhaust gas into the EGR mixer body are disposed on the inner walls of the EGR branch pipe and the EGR mixer body; the EGR branch pipes comprise a first EGR branch pipe and a second EGR branch pipe, the axes of which are vertical to each other, and the axes of the first EGR branch pipe and the second EGR branch pipe are vertical to and intersect with the axis of the EGR mixer body; the utility model discloses a EGR blender, EGR branch pipe and EGR blender internal wall form a plurality of venturi's structures of being similar to, produce certain suction to waste gas orifice spun waste gas when the gas mixture flows through the EGR branch pipe, increase the kinetic energy of waste gas, make waste gas and gas mixture mix more evenly. On the basis, the other core of the utility model is to provide an engine cylinder head with this cooling structure.
Patent document 3 (CN 201610776114.4) discloses a mixing device field, which discloses an EGR mixing device, comprising an EGR mixer, an EGR pipe and an air inlet pipe, wherein the EGR mixer comprises an annular hollow shell, the outer wall of the hollow shell is provided with an inlet, the inner wall of the hollow shell is circumferentially distributed with a plurality of outlets, and a cavity of the hollow shell forms an air flow channel; the intake pipe includes first intake pipe and second intake pipe, first intake pipe and second intake pipe are connected respectively the both ends of hollow casing, the EGR blender passes through a plurality of exports with first intake pipe, second intake pipe intercommunication, the internal diameter of hollow casing with the internal diameter phase-match of first intake pipe, second intake pipe, the EGR pipe with the entry of hollow casing links to each other. The invention can improve the EGR mixing uniformity and ensure low air intake resistance.
However, the schemes have complex structure and low working efficiency.
Disclosure of Invention
An object of the utility model is to provide a binary channels EGR mixing arrangement solves the inhomogeneous problem that leads to engine efficiency to descend that mixes of present EGR to and the complicated and inefficiency problem of bayonet scheme structure.
According to the utility model provides a technical scheme: a two-channel EGR mixing device is characterized in that: open device one side has fresh air inlet, near fresh air inlet sets up the installation department, fresh air inlet below is fresh air passageway, the device opposite side is opened there are right waste gas entry and left waste gas entry, right waste gas entry one side is right waste gas passageway, left waste gas entry one side is left waste gas passageway, right waste gas entry with for the mixed boss of tumble striking between the left waste gas entry, right waste gas passageway with left waste gas passageway one side is equipped with the tumble mixing chamber, tumble mixing chamber one side and fresh air passageway intercommunication, the mixed tumble passageway is connected to tumble mixing chamber opposite side, mixed tumble passageway one side is mixed tumble export.
As a further improvement, the right exhaust gas channel comprises a right air inlet straight line section, and the right air inlet straight line section is connected with a right air inlet guide section.
As a further improvement, the left exhaust gas channel contains the left straightway that admits air, the left straightway that admits air connects left air inlet guide section.
As a further improvement of the utility model, the installation department is the screw thread mounting hole.
As a further improvement of the utility model, the tumble mixing chamber is hemispherical.
As a further improvement of the utility model, the included angle between the right air inlet straight line section and the right air inlet guide section is 60-70 degrees.
As a further improvement of the utility model, the included angle between the left air inlet straight line section and the left air inlet guide section is 80-90 degrees.
Compared with the prior art, the utility model, have following advantage:
1. The utility model discloses simple structure, simple to operate, the pipeline circulation is smooth and easy.
2. The utility model discloses do not have bayonet pipeline, reduce gas flow resistance, reduce engine energy loss.
Drawings
Fig. 1 is a schematic view of the channel inlet of the two-channel EGR mixing device of the present invention.
fig. 2 is the utility model discloses a binary channels EGR mixing arrangement dissects the sketch map.
Fig. 3 is a schematic diagram of the two-channel EGR mixing device of the present invention.
Fig. 4 is a schematic diagram of the inner chamber gas flow of the two-channel EGR mixing device of the present invention.
Description of reference numerals: the device comprises a right waste gas channel 1, a right air inlet straight line section 1-1, a right air inlet guide section 1-2, a left waste gas channel 2, a left air inlet straight line section 2-1, a left air inlet guide section 2-2, a fresh air channel 3, a tumble mixing cavity 4, a mixed tumble channel 5, a tumble impact mixing boss 6 and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the objects of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the patented embodiments of the invention without any inventive step, are within the scope of the invention.
The invention will be further described with reference to the following specific drawings:
As shown in FIGS. 1-4, the utility model relates to a binary channels EGR mixing arrangement, binary channels EGR mixing arrangement top is opened there is fresh air entry, and near fresh air entry sets up the installation department, convenient and engine butt joint. The mounting portion is a threaded mounting hole in this embodiment. Below the fresh air inlet is a fresh air channel 3. The bottom of the double-channel EGR mixing device is provided with a right waste gas inlet and a left waste gas inlet. The upper part of the right waste gas inlet is a right waste gas channel 1, the upper part of the left waste gas inlet is a left waste gas channel 2, and a tumble impact mixing boss 6 is arranged between the right waste gas inlet and the left waste gas inlet. And a tumble mixing cavity 4 is arranged above the right waste gas channel 1 and the left waste gas channel 2, the tumble mixing cavity 4 is hemispherical, the cross-sectional area of the tumble mixing cavity is gradually changed, and the tumble mixing cavity is favorable for air flow mixing. The upper part of the tumble mixing cavity 4 is communicated with the fresh air channel 3, the right side of the tumble mixing cavity is connected with a mixed tumble channel 5, and one side of the mixed tumble channel 5 is a mixed tumble outlet.
The utility model discloses a concrete installation application as follows: waste gas respectively enters a right waste gas channel 1 and a left waste gas channel 2 from a right waste gas inlet and a left waste gas inlet, the waste gas entering the right waste gas channel 1 firstly rises along a right air inlet straight-line section 1-1 and then flows downwards under the guide of a right air inlet guide section 1-2 to tumble and impact a mixing boss 6, and the included angle between the right air inlet straight-line section 1-1 and the right air inlet guide section 1-2 is 60-70 degrees. The waste gas entering the left waste gas channel 2 firstly rises along the left air inlet straight line section 2-1 and then flows to the tumble impinging mixing boss 6 under the guidance of the left air inlet guide section 2-2, and the included angle between the left air inlet straight line section 2-1 and the left air inlet guide section 2-2 is 80-90 degrees. Two waste gas airflows with different flow directions are mixed after rebounding from the tumble impact mixing boss 6 to form waste gas tumble. Fresh air flows into the fresh air passage 3 from the fresh air inlet, is then mixed with the tumble flow of exhaust gas in the tumble mixing chamber 4 to form a mixed tumble flow, and is finally discharged from the mixed tumble outlet through the mixed tumble passage 5.
The invention mainly solves the problem that the efficiency of the engine is reduced due to uneven EGR mixing at present, and meanwhile, the invention has the advantages of no plug-in pipeline, simple structure, convenient installation, smooth pipeline circulation, reduced gas flow resistance and reduced energy loss of the engine.
Claims (7)
1. A two-channel EGR mixing device is characterized in that: open device one side has fresh air inlet, fresh air inlet sets up the installation department near, fresh air inlet below is fresh air passageway (3), the device opposite side is opened has right waste gas entry and left waste gas entry, right waste gas entry one side is right waste gas passageway (1), left waste gas entry one side is left waste gas passageway (2), right waste gas entry with for the tumble striking mixing boss (6) between the left waste gas entry, right waste gas passageway (1) with left waste gas passageway (2) one side is equipped with tumble mixing chamber (4), tumble mixing chamber (4) one side and fresh air passageway (3) intercommunication, tumble mixing tumble passageway (5) is connected to tumble mixing chamber (4) opposite side, mixing tumble passageway (5) one side is mixing tumble to flow and exports.
2. The dual channel EGR mixing device of claim 1, wherein: the right exhaust gas channel (1) comprises a right air inlet straight line section (1-1), and the right air inlet straight line section (1-1) is connected with a right air inlet guide section (1-2).
3. The dual channel EGR mixing device of claim 1, wherein: the left exhaust gas channel (2) comprises a left air inlet straight line section (2-1), and the left air inlet straight line section (2-1) is connected with a left air inlet guide section (2-2).
4. The dual channel EGR mixing device of claim 1, wherein: the installation part is a threaded installation hole.
5. The dual channel EGR mixing device of claim 1, wherein: the tumble mixing cavity (4) is hemispherical.
6. The dual channel EGR mixing device of claim 2, wherein: the included angle between the right air inlet straight section (1-1) and the right air inlet guide section (1-2) is 60-70 degrees.
7. The dual channel EGR mixing device of claim 3, wherein: the included angle between the left air inlet straight line section (2-1) and the left air inlet guide section (2-2) is 80-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642914.6U CN209781068U (en) | 2019-05-07 | 2019-05-07 | Binary channels EGR mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642914.6U CN209781068U (en) | 2019-05-07 | 2019-05-07 | Binary channels EGR mixing arrangement |
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| Publication Number | Publication Date |
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| CN209781068U true CN209781068U (en) | 2019-12-13 |
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| CN201920642914.6U Active CN209781068U (en) | 2019-05-07 | 2019-05-07 | Binary channels EGR mixing arrangement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944719A (en) * | 2019-05-07 | 2019-06-28 | 一汽解放汽车有限公司 | A kind of binary channels EGR mixing arrangement |
| CN111486030A (en) * | 2020-06-10 | 2020-08-04 | 安徽腾达汽车科技有限公司 | Exhaust gas circulating valve chamber |
| CN111486031A (en) * | 2020-06-10 | 2020-08-04 | 安徽腾达汽车科技有限公司 | Efficient EGR valve |
-
2019
- 2019-05-07 CN CN201920642914.6U patent/CN209781068U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944719A (en) * | 2019-05-07 | 2019-06-28 | 一汽解放汽车有限公司 | A kind of binary channels EGR mixing arrangement |
| CN111486030A (en) * | 2020-06-10 | 2020-08-04 | 安徽腾达汽车科技有限公司 | Exhaust gas circulating valve chamber |
| CN111486031A (en) * | 2020-06-10 | 2020-08-04 | 安徽腾达汽车科技有限公司 | Efficient EGR valve |
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