CN106907275A - A kind of egr system wireway - Google Patents
A kind of egr system wireway Download PDFInfo
- Publication number
- CN106907275A CN106907275A CN201710142995.9A CN201710142995A CN106907275A CN 106907275 A CN106907275 A CN 106907275A CN 201710142995 A CN201710142995 A CN 201710142995A CN 106907275 A CN106907275 A CN 106907275A
- Authority
- CN
- China
- Prior art keywords
- wireway
- section
- egr system
- sections
- pipe joint
- 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
Abstract
The invention discloses a kind of egr system wireway,Air intake and EGR the parts connection of wireway,Gas outlet and engine suction manifold inlet end are connected,The pipeline section of egr system wireway is connected by the pipe joint of marmem material,Plane where first two sections of wireway is 30 ° with the 3rd section and the 4th section plane included angle at place,The 3rd section of wireway and the 4th section in same level,The 5th section of plane at place of wireway is 90 ° with the 3rd section and the 4th section plane included angle at place,Two gathering sills of gas outlet are opened in the side wall of air guide pipe end respectively,Each section of pipeline section can be adjusted according to space size in engine and set length into pipe joint,Adapt to the space arrangement needs of different engines,Ensure simultaneously it is sufficiently cool after waste gas rapidly enter motor intake manifold inlet end and be well mixed with fresh air.
Description
Technical field
The present invention relates to a kind of internal combustion engine exhaust gas recirculatioon pipe（Exhaust Gas Recirculation）, especially
It is related to a kind of exhaust gas recirculatioon pipe with air guide port.
Background technology
Gas recirculation system（Exhaust Gas Recirculation）Abbreviation egr system, the system by diesel engine or
The sub-fraction of the waste gas that gasoline engine is produced sends cylinder back to again.EGR gas due to inertia will retarded combustion process,
Burning velocity slows down causes the pressure initiation process in combustion chamber to slow down, institute in reducing the waste gas discharged from the combustion chamber of internal combustion engine
The nitrogen oxides for containing（NOX）.Egr system is provided with the wireway for the cooling waste gas after recycling to be imported inlet manifold, should
One end of wireway is connected with EGR outlet sides, and the other end is connected with inlet manifold inlet end；In the prior art, wireway is energy
The stereoplasm tube with certain flexibility of high temperature is tolerated, because the narrow space of put-put, and different engines have
Different space arrangements, and the wireway of this structure cannot in the put-put of narrow space flexible arrangement, and cannot
The space arrangement needs of different engines are adapted to, versatility is not enough.Only in the gas outlet one of wireway in other existing technology
Side imports EGR gases, can cause in whole air inlet tube section that part EGR gas concentrations are too high, it is impossible to realize waste gas with fresh sky
The uniform mixing of gas, causes each cylinder EGR skewness, EGR to make NO in each cylinder skewnessXAnd particulate（PM）Folding
Middle worsening of relations, i.e. reduce NO as muchXSmoke intensity can be caused to increase more, reduce effects of the EGR in terms of discharge is reduced
Really, while also resulting in fuel consumption increase.EGR gases are promoted to be well mixed with fresh air, it is ensured that EGR uniformly divides in each cylinder
Cloth, makes fuel engines that qualified EGR rate can be also reached in high load capacity.
For example, disclosed in Chinese patent literature " egr system wireway ", notification number is CN201510615540, EGR
Wireway in system is made up of three sections of pipeline sections, and two pipeline section where the gas outlet of wireway and air intake is stereoplasm tube, in
Between be bellows structure, three sections of Guan Jun are sequentially connected using welding manner, the bellows structure in the middle of the wireway of this structure
Irregular turning can be carried out and stretched, and absorb the thermal deformation of wireway, can make wireway overall in narrow space
Flexible arrangement in put-put, but three sections of pipes of the wireway of this structure are yielding in welding process, and portions
Go wrong, it is necessary to change overall wireway.In addition in above-mentioned patent, wireway gas outlet connects a longitudinal section and gradually subtracts
Small inlet union, to improve waste gas flow velocity, promotes waste gas to be sufficiently mixed uniformly with fresh air, and this method has certain
Effect, but the inlet union processing technology that longitudinal section is gradually reduced is relative complex, it is necessary to a kind of egr system wireway can not only
Make the overall flexible arrangement in the put-put of narrow space of wireway, it can also be ensured that waste gas derived from wireway with it is fresh
Air is sufficiently mixed uniformly, and production technology is relatively easy.
The content of the invention
First purpose of the invention be solve put-put narrow space, and different engines have it is different
Space arranges, wireway cannot in the put-put of narrow space flexible arrangement, and the sky of different engines cannot be adapted to
Between arrange need.
Second object of the present invention is EGR gases is well mixed with fresh air, it is ensured that EGR uniformly divides in each cylinder
Cloth, makes fuel engines that qualified EGR rate can be also reached in high load capacity.
To achieve these goals, present invention following technical scheme：
A kind of egr system wireway, including five sections of pipeline sections, pipe joint, support frame, flange, air intake and gas outlets, egr system
The air intake of wireway is connected by flange and EGR parts, and the gas outlet of egr system wireway is entered by flange and engine
Gas menifold inlet end is connected, and the support frame being enclosed within wireway coordinates with air guide ligament, is fixed on wireway by screw
On engine.Five sections of pipeline sections of egr system wireway are connected by pipe joint, each section of uniform wall thickness of wireway, internal-and external diameter phase
Together, the material of each section of wireway is refractory metal material, and the flange on air intake and gas outlet pipeline section is integral (type) flange, production
Process is simple, is easy to using mould batch machining.The material of pipe joint is marmem, expanding to pipe joint under low temperature,
And each section of pipeline section is adjusted according to space size in engine set length into pipe joint, during egr system normal work, waste gas enters
Wireway, the temperature of waste gas is higher, and wireway absorbs the heat in waste gas, and pipe joint temperature rises, because the material of pipe joint is
Marmem, can shrink at high temperature, cause pipe joint bore to gradually taper up, and firmly connect with each segment seal of wireway
Connect.Angle is connected more than 90 ° by pipe joint between first two sections of wireway, overall in structure obliquely, egr system work
When, overall structure obliquely can be lowered into the flow velocity of the waste gas of wireway, and angle exceedes between second segment and the 3rd section
90 °, between first two sections angle more than 90 °, preceding plane where two sections and the 3rd section and the 4th section plane holder at place of wireway
Angle is 30 °, and waste gas can be allowed steadily to enter wireway, the 3rd section of wireway and the 4th section in same level, and two sections
Between angle be 90 °, the 3rd section and the 4th section length of pipeline section exceedes remaining pipeline section, and the steady waste gas for entering wireway is the
Three sections and the 4th section can be with sufficiently cool, the 5th section of plane at place of wireway and the 3rd section and the 4th section plane holder at place
Angle is 90 °, and the waste gas after cooling can rapidly enter motor intake manifold inlet end, gas outlet by the gas outlet of wireway
Two gathering sills be opened in the side wall of air guide pipe end respectively, two gathering sills with wireway center line be symmetrical axial symmetry point
Cloth, it is ensured that waste gas is well mixed with fresh air.
Preferably, the material of pipe joint is marmem, and it is expanding to pipe joint under low temperature, when each pipeline section is assembled,
Each section of pipeline section can be adjusted according to space size in engine and set length into pipe joint, adapt to the space arrangement of different engines
Need.
Preferably, angle is connected more than 90 ° by pipe joint between first two sections of wireway, overall is in tie obliquely
Structure, between second segment and the 3rd section angle more than 90 °, between first two sections angle more than 90 °, the preceding plane where two sections of wireway
With the 3rd section and the 4th section plane included angle at place for 30 °, the 3rd section of wireway and the 4th section in same level, and two
Angle between section is 90 °, the 3rd section and the 4th section length of pipeline section exceedes remaining pipeline section, and the 5th section of place of wireway is put down
Face is 90 ° with the 3rd section and the 4th section plane included angle at place, and this structure can not only ensure steadily to enter the useless of wireway
Gas can be with sufficiently cool, while the need for space can meet egr system in the relatively small engine of occupancy.
Preferably, the 5th section of plane at place of wireway is 90 ° with the 3rd section and the 4th section plane included angle at place,
Two gathering sills of gas outlet are opened in the side wall of air guide pipe end respectively, two gathering sills with wireway center line be symmetrical
Axial symmetry is distributed, it is ensured that the waste gas after sufficiently cool rapidly enters motor intake manifold inlet end and mixes with fresh air
Uniformly.
Therefore, the present invention has the advantages that：Taking in relatively small engine under the premise of space, can be with root
Each section of pipeline section is adjusted according to space size in engine and sets length into pipe joint, adapt to the space arrangement needs of different engines,
Ensure simultaneously it is sufficiently cool after waste gas rapidly enter motor intake manifold inlet end and be well mixed with fresh air.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the invention.
In figure：1st, air intake 2, first paragraph pipeline section 3, second segment pipeline section 4, pipe joint 5, support frame 6, the 3rd section of pipe
Section the 7, the 4th section of pipeline section 8, gas outlet flange 9, the 5th section of pipeline section 10, gas outlet 11, air intake flange.
Specific embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
A kind of egr system wireway, including five sections of pipeline sections, pipe joint 4, support frame 5, flange, air intake 1 and gas outlets
10, the air intake of egr system wireway is connected by flange 11 and EGR parts, and the gas outlet 10 of egr system wireway passes through
Flange 8 and engine suction manifold inlet end are connected, and the support frame 5 being enclosed within wireway coordinates with air guide ligament, by spiral shell
Nail fixes on the engine wireway.Five sections of pipeline sections of egr system wireway are connected by pipe joint, each section of wall of wireway
Thick uniform, internal-and external diameter is identical, and the material that each section of wireway is refractory metal material, the flange on air intake and gas outlet pipeline section
It is integral (type) flange, simple production process is easy to using mould batch machining.The material of pipe joint is marmem, low temperature
Under it is expanding to pipe joint, and each section of pipeline section adjusted according to space size in engine set length into pipe joint, egr system is normal
During work, waste gas enters wireway, and the temperature of waste gas is higher, and wireway absorbs the heat in waste gas, and pipe joint temperature rises, because
The material of pipe joint is marmem, can be shunk at high temperature, causes pipe joint bore to gradually taper up, firmly and wireway
Each segment seal connection.Angle is connected more than 90 ° by pipe joint between first two sections of wireway, overall in structure obliquely,
When egr system works, overall structure obliquely can be lowered into the flow velocity of the waste gas of wireway, second segment 3 and the 3rd section 6
Between angle more than 90 °, between first two sections angle more than 90 °, the preceding plane where two sections of wireway with the 3rd section and the 4th section 7
The plane included angle at place is 30 °, and waste gas can be allowed steadily to enter wireway, and the 3rd section of wireway and the 4th section in same level
On face, and angle between two sections of pipeline sections is 90 °, and the 3rd section and the 4th section length of pipeline section exceedes remaining pipeline section, steady to enter
The waste gas of wireway the 3rd section and the 4th section can with sufficiently cool, plane where the 5th section 9 of wireway with the 3rd section and
The 4th section of plane included angle at place is 90 °, and the waste gas after cooling can rapidly enter engine and enter by the gas outlet of wireway
Gas gas manifold inlet end, two gathering sills of gas outlet are opened in the side wall of air guide pipe end respectively, and two gathering sills are with wireway
Heart line is that symmetry axis is symmetrical, it is ensured that waste gas is well mixed with fresh air.
Claims (7)
1. a kind of egr system wireway, including
Five sections of pipeline sections；
Pipe joint, five sections of pipeline sections of the egr system wireway are connected by pipe joint；And
Air intake, the air intake of the egr system wireway is connected by the integral (type) flange and EGR parts on pipeline section；
Gas outlet, the gas outlet of the egr system wireway is by the integral (type) flange on pipeline section and engine suction manifold air inlet
End connection.
2. egr system wireway according to claim 1, it is characterized in that, two gathering sills of the gas outlet are opened respectively
In the side wall of exhaust gas recirculatioon pipe end, two gathering sills are symmetrical as symmetry axis with wireway center line.
3. egr system wireway according to claim 1, it is characterized in that, angle surpasses between first two sections of the wireway
90 ° are crossed, two sections are connected by pipe joint before wireway, overall in structure obliquely, angle exceedes between second segment and the 3rd section
90 °, the 3rd section of the pipe joint and the 4th section in same level, and angle between two sections is 90 °, the wireway
The 5th section of plane at place and the 3rd section and plane included angle formed by the 4th section be 90 °, preceding two sections of places of the wireway
Plane is 30 ° with the 3rd section and plane included angle formed by the 4th section.
4. egr system wireway according to claim 1, it is characterized in that, each section of uniform wall thickness of the wireway is inside and outside
Footpath is identical.
5. egr system wireway according to claim 1, it is characterized in that, the material of the wireway is refractory metal
Material.
6. egr system wireway according to claim 1, it is characterized in that, the material of the pipe joint is that shape memory is closed
Gold, it is expanding under low temperature, assemble, when temperature is raised, joint bore is gradually tapered up.
7. egr system wireway according to claim 1, it is characterized in that, the support frame being enclosed within wireway with lead
Tracheae gap coordinates, and is fixed by screws on engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142995.9A CN106907275A (en) | 2017-03-10 | 2017-03-10 | A kind of egr system wireway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142995.9A CN106907275A (en) | 2017-03-10 | 2017-03-10 | A kind of egr system wireway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106907275A true CN106907275A (en) | 2017-06-30 |
Family
ID=59187774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710142995.9A Pending CN106907275A (en) | 2017-03-10 | 2017-03-10 | A kind of egr system wireway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106907275A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435390A (en) * | 2008-12-24 | 2009-05-20 | 东风汽车有限公司 | Exhaust gas recirculation mixer of automobile engine |
| CN202883160U (en) * | 2012-07-12 | 2013-04-17 | 北汽福田汽车股份有限公司 | Exhaust gas recirculation pipe-connecting structure and automobile engine with the same |
| CN203796448U (en) * | 2014-04-25 | 2014-08-27 | 无锡新得宝金属软管有限公司 | Engine EGR (exhaust gas recirculation) connection tube assembly |
| JP2015021443A (en) * | 2013-07-19 | 2015-02-02 | ダイハツ工業株式会社 | Piping device for internal combustion engine |
| CN204646463U (en) * | 2015-03-10 | 2015-09-16 | 宁波菲力克汽配有限公司 | A kind of exhaust gas recirculation pipe |
-
2017
- 2017-03-10 CN CN201710142995.9A patent/CN106907275A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435390A (en) * | 2008-12-24 | 2009-05-20 | 东风汽车有限公司 | Exhaust gas recirculation mixer of automobile engine |
| CN202883160U (en) * | 2012-07-12 | 2013-04-17 | 北汽福田汽车股份有限公司 | Exhaust gas recirculation pipe-connecting structure and automobile engine with the same |
| JP2015021443A (en) * | 2013-07-19 | 2015-02-02 | ダイハツ工業株式会社 | Piping device for internal combustion engine |
| CN203796448U (en) * | 2014-04-25 | 2014-08-27 | 无锡新得宝金属软管有限公司 | Engine EGR (exhaust gas recirculation) connection tube assembly |
| CN204646463U (en) * | 2015-03-10 | 2015-09-16 | 宁波菲力克汽配有限公司 | A kind of exhaust gas recirculation pipe |
Non-Patent Citations (2)
| Title |
|---|
| 倪红军: "《工程材料》", 31 August 2016, 东南大学出版社 * |
| 张兴国: "《液压与气压传动》", 31 January 2017, 西安电子科技大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10202893B2 (en) | Double channel power turbine system and control method thereof | |
| CN103061867B (en) | A kind of gas-liquid type intercooler | |
| CN206530418U (en) | EGR valve and engine EGR system for engine EGR system | |
| CN203476553U (en) | Air inlet manifold structure | |
| CN106907275A (en) | A kind of egr system wireway | |
| CN208900243U (en) | A kind of engine and its air inlet system and exhaust system | |
| CN205225496U (en) | Realize cold, controllable introducing device of hot EGR | |
| CN209539472U (en) | A kind of exhaust gas recirculation device with by-passing valve | |
| CN105508087B (en) | Series parallel type gas recirculation system and its application method | |
| CN203717168U (en) | Engine, as well as exhaust gas recirculation system and exhaust manifold thereof | |
| CN203335281U (en) | EGR air mixing device and fuel oil engine with EGR system | |
| CN2814159Y (en) | Composite thermal accumulating combustor | |
| CN103541835A (en) | Turbocharged engine with cooling exhaust recirculation technology | |
| CN103696887A (en) | Internal combustion engine nitrogen-reducing and oxygen-increasing air inlet device and control method thereof | |
| CN207554224U (en) | A kind of Hybrid EGR Systems | |
| CN209586538U (en) | A kind of exhaust gas mixed structure of exhaust gas adapter tube and egr system | |
| WO2015180540A1 (en) | Combustion gas turbine | |
| CN102359412A (en) | Anti-reflux motorcycle exhaust device | |
| CN201420627Y (en) | EGR cooler for diesel | |
| CN207018112U (en) | Low-speed diesel engine EGR gas enters the pipeline and gas recirculation system of scavenging system | |
| CN203640881U (en) | Nitrogen-reducing and oxygen-enriching air inlet device for internal combustion engine | |
| CN215292719U (en) | Exhaust gas recirculation system based on internal combustion engine | |
| CN211314335U (en) | Tail gas treatment system of gas engine | |
| CN205714484U (en) | The double turbine egr system of a kind of boats and ships two stroke diesel engine | |
| CN217841798U (en) | MPC exhaust system of eight-cylinder four-stroke turbocharged diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315408 788 Tanjialing West Road, Yuyao City, Ningbo City, Zhejiang Province Applicant after: Shentong Science and Technology Group Co., Ltd. Address before: 315408 788 Tanjialing West Road, Yuyao City, Ningbo City, Zhejiang Province Applicant before: Ningbo Shentong Mould & Plastic Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170630 |
|
| RJ01 | Rejection of invention patent application after publication |