CN108425770A - A kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure - Google Patents
A kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure Download PDFInfo
- Publication number
- CN108425770A CN108425770A CN201810210720.9A CN201810210720A CN108425770A CN 108425770 A CN108425770 A CN 108425770A CN 201810210720 A CN201810210720 A CN 201810210720A CN 108425770 A CN108425770 A CN 108425770A
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- China
- Prior art keywords
- pipe
- air
- angle
- diesel engine
- exhaust gas
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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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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
Abstract
A kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure, including air inlet pipe（1）, the air inlet pipe（1）Front end is provided with air admission hole（2）, the air admission hole（2）Inside it is provided with the ingress pipe of round tube shape（3）, the ingress pipe（3）In air inlet pipe（1）Tilted placement, the ingress pipe（3）Front end is the angle with angle of inclination.Promote the mixing of EGR gases and fresh air, increases mixing uniformity.
Description
Technical field
The present invention relates to a kind of waste gas ingress pipe structure, more specifically to a kind of exhaust gas of diesel engine EGR gaseous mixtures
Air pipe structure is taken, engine and related system technical field are belonged to.
Background technology
Referring to Fig. 7, currently, large diesel engine EGR air inlet pipe generally use directly opens up air admission hole 2 in air inlet pipe 1 and takes
Gas.But this kind takes air inlet pipe that 1 trepanning directly takes gas mode, easily leads to each cylinder EGR and fresh air mixing is uneven,
So that each cylinder EGR distributing homogeneities are poor.
Invention content
It takes it is an object of the invention to being directed to existing EGR exhaust and easily leads to each cylinder EGR and fresh existing for air pipe structure
Air mixing is uneven, so that the deficiencies of each cylinder EGR distributing homogeneities are poor, provides a kind of exhaust gas of diesel engine EGR gaseous mixtures and takes
Air pipe structure.
To achieve the above object, technical solution of the invention is：A kind of exhaust gas of diesel engine EGR gaseous mixtures takes tracheae
Structure, including air inlet pipe, the air inlet pipe front end are provided with air admission hole, round tube shape are provided in the air admission hole
Ingress pipe, for the ingress pipe in the tilted placement of air inlet pipe, the ingress pipe front end is the angle with angle of inclination.
The angle of inclination of ingress pipe front end angle is 40-70 degree.
The normal of ingress pipe front end angle and the angle of fresh air airflow direction are 30-90 degree.
The ingress pipe stretches into air inlet cylindrical parts and is provided with multiple rectangular slots.
The thickness of the rectangular slot is 1-2mm.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the ingress pipe of round tube shape is provided in the present invention in air admission hole, ingress pipe is imported in the tilted placement of air inlet pipe
Pipe front end is the angle with angle of inclination；The angle increases the contact area of EGR exhaust and fresh air, can promote EGR gas
The mixing of body and fresh air increases mixing uniformity.
2, ingress pipe stretches into air inlet cylindrical parts and is provided with multiple rectangular slots in the present invention；Rectangular slot forms the stream of gas
Dynamic separation, further promotes the mixing of EGR gases and fresh air, increases mixing uniformity.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is ingress pipe structural schematic diagram in the present invention.
Fig. 3 is prior art simulation calculation flow field figure.
Fig. 4 is simulation calculation flow field figure of the present invention.
Fig. 5 is the present invention and each cylinder EGR distributing homogeneity comparison diagrams of the prior art.
Fig. 6 is the present invention and each cylinder EGR rate deviation standard difference figure of the prior art.
Fig. 7 is that existing EGR exhaust takes air pipe structure schematic diagram.
In figure, air inlet pipe 1, air admission hole 2, ingress pipe 3.
Specific implementation mode
Below in conjunction with description of the drawings, the present invention is described in further detail with specific implementation mode.
Referring to Fig. 1 to Fig. 2, a kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure, including air inlet pipe 1, described
1 front end of air inlet pipe is provided with air admission hole 2.The ingress pipe 3 of round tube shape, the ingress pipe 3 are provided in the air admission hole 2
Slant setting, 3 front end of ingress pipe are the angle with certain angle of inclination at an angle in air inlet pipe 1.It should
Angle increases the contact area of EGR exhaust and fresh air, can promote the mixing of EGR gases and fresh air, and it is equal to increase mixing
Even property.
Referring to Fig. 1 to Fig. 2, the angle of inclination of 3 front end angle of the ingress pipe is 40-70 degree.3 front end of the ingress pipe is oblique
The normal of mouth is 30-90 degree with the angle of fresh air airflow direction.
Referring to Fig. 1 to Fig. 2, the ingress pipe 3 stretches into 1 part of air inlet pipe and is provided with multiple rectangular slots.Specifically, institute
The thickness for stating rectangular slot is 1-2mm.Rectangular slot formed gas flow separation, further promote EGR gases with it is fresh
The mixing of air increases mixing uniformity.
Referring to Fig. 3 to Fig. 6, proved by simulation calculation, at the same air inlet moment, the present invention is compared with the prior art,
It understands to use fresh air of the present invention and the apparent mixability of EGR gases higher, each cylinder EGR distributing homogeneities greatly improve.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.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 (5)
1. a kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure, including air inlet pipe（1）, the air inlet pipe（1）Before
End is provided with air admission hole（2）, it is characterised in that：The air admission hole（2）Inside it is provided with the ingress pipe of round tube shape（3）, described
Ingress pipe（3）In air inlet pipe（1）Tilted placement, the ingress pipe（3）Front end is the angle with angle of inclination.
2. a kind of exhaust gas of diesel engine EGR gaseous mixtures according to claim 1 takes air pipe structure, it is characterised in that：It is described
Ingress pipe（3）The angle of inclination of front end angle is 40-70 degree.
3. a kind of exhaust gas of diesel engine EGR gaseous mixtures according to claim 1 takes air pipe structure, it is characterised in that：It is described
Ingress pipe（3）The normal of front end angle and the angle of fresh air airflow direction are 30-90 degree.
4. a kind of exhaust gas of diesel engine EGR gaseous mixtures according to claim 1 takes air pipe structure, it is characterised in that：It is described
Ingress pipe（3）Stretch into air inlet pipe（1）Part is provided with multiple rectangular slots.
5. a kind of exhaust gas of diesel engine EGR gaseous mixtures according to claim 4 takes air pipe structure, it is characterised in that：It is described
The thickness of rectangular slot is 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210720.9A CN108425770A (en) | 2018-03-14 | 2018-03-14 | A kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210720.9A CN108425770A (en) | 2018-03-14 | 2018-03-14 | A kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108425770A true CN108425770A (en) | 2018-08-21 |
Family
ID=63158520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810210720.9A Pending CN108425770A (en) | 2018-03-14 | 2018-03-14 | A kind of exhaust gas of diesel engine EGR gaseous mixtures takes air pipe structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN108425770A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5306039B2 (en) * | 2009-04-28 | 2013-10-02 | 日野自動車株式会社 | EGR gas mixing device |
| CN203463202U (en) * | 2010-12-06 | 2014-03-05 | 斗山英维高株式会社 | Engine mixing device of exhaust gas recirculation gas and inlet gas |
| GB2511501A (en) * | 2013-03-04 | 2014-09-10 | Gm Global Tech Operations Inc | Exhaust gas recirculation system for an internal combustion engine |
| US20150192095A1 (en) * | 2012-06-26 | 2015-07-09 | Ivan M. Lazich | Exhaust gas recirculation |
| CN205841042U (en) * | 2016-07-29 | 2016-12-28 | 重庆长安汽车股份有限公司 | A kind of EGR mixing mozzle |
| CN206111399U (en) * | 2016-10-14 | 2017-04-19 | 宁波志达汽车部件有限公司 | Automobile intake tube structure |
| CN107191295A (en) * | 2017-07-10 | 2017-09-22 | 河南柴油机重工有限责任公司 | A kind of diesel engine EGR exhaust blender |
| CN208106600U (en) * | 2018-03-14 | 2018-11-16 | 东风商用车有限公司 | A kind of exhaust gas of diesel engine EGR gaseous mixture takes air pipe structure |
-
2018
- 2018-03-14 CN CN201810210720.9A patent/CN108425770A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5306039B2 (en) * | 2009-04-28 | 2013-10-02 | 日野自動車株式会社 | EGR gas mixing device |
| CN203463202U (en) * | 2010-12-06 | 2014-03-05 | 斗山英维高株式会社 | Engine mixing device of exhaust gas recirculation gas and inlet gas |
| US20150192095A1 (en) * | 2012-06-26 | 2015-07-09 | Ivan M. Lazich | Exhaust gas recirculation |
| GB2511501A (en) * | 2013-03-04 | 2014-09-10 | Gm Global Tech Operations Inc | Exhaust gas recirculation system for an internal combustion engine |
| CN205841042U (en) * | 2016-07-29 | 2016-12-28 | 重庆长安汽车股份有限公司 | A kind of EGR mixing mozzle |
| CN206111399U (en) * | 2016-10-14 | 2017-04-19 | 宁波志达汽车部件有限公司 | Automobile intake tube structure |
| CN107191295A (en) * | 2017-07-10 | 2017-09-22 | 河南柴油机重工有限责任公司 | A kind of diesel engine EGR exhaust blender |
| CN208106600U (en) * | 2018-03-14 | 2018-11-16 | 东风商用车有限公司 | A kind of exhaust gas of diesel engine EGR gaseous mixture takes air pipe structure |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180821 |