CN109458278A - The flow adjusting structure of exhaust piping in a kind of egr system - Google Patents
The flow adjusting structure of exhaust piping in a kind of egr system Download PDFInfo
- Publication number
- CN109458278A CN109458278A CN201811303380.0A CN201811303380A CN109458278A CN 109458278 A CN109458278 A CN 109458278A CN 201811303380 A CN201811303380 A CN 201811303380A CN 109458278 A CN109458278 A CN 109458278A
- Authority
- CN
- China
- Prior art keywords
- exhaust piping
- exhaust
- conducting element
- flow adjusting
- egr system
- 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
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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
-
- 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
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
-
- 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
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
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- 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 invention discloses a kind of flow adjusting structures of exhaust piping in egr system, comprising: conducting element is movably set in exhaust piping, and the gas passage of variable diameter is formed between the outside wall surface of the conducting element and the inner wall of the exhaust steam passage；Actuator, the force side of the actuator are connect with the conducting element.Compared with prior art, the present invention passes through in setting conducting element and actuator in exhaust piping, not only realize the function of controlling to adjust exhaust gas, play the role of EGR valve, and the EGR valve clamping stagnation caused by thoroughly preventing this valve mechanism of EGR valve from leading to gum deposit because of exhaust gas supercooling, difficult disassembly, the heat resistance demand of EGR valve ontology is reduced simultaneously, is reduced the high request to material, is reduced cost.
Description
Technical field
The present invention relates to egr system technical field, the flow adjusting structure of exhaust piping in especially a kind of egr system.
Background technique
In order to make light diesel engine meet Europe IV, V emission request of Europe, EGR technology has become the standard configuration of engine.
EGR (Exhaust Gas Recycle, exhaust gas recycling) scheme is to reduce the effective way of engine NOx emission, and work is former
Reason is that a part of exhaust gas is introduced into cylinder, due to containing H2O, CO2 in exhaust gas constituents, the specific heat capacity of gaseous mixture in raising cylinder,
Simultaneously because the exhaust gas temperature after cooler for recycled exhaust gas is lower, cylinder temperature is reduced, to reduce the discharge of NOx.
In traditional design scheme, EGR exhaust is mainly to pass through the peripheral pipeline of design specialized for EGR exhaust from engine
Exhaust manifold is introduced into inlet manifold by EGR valve and cooler for recycled exhaust gas.WGT booster is cooperated to improve engine simultaneously
FAI Fresh Air Intake amount improves the performance of engine.
Before EGR valve can be arranged in cooler for recycled exhaust gas, referred to as hot end EGR valve.After cooler for recycled exhaust gas can also being arranged in, referred to as
Cold end EGR valve.EGR valve be arranged in the advantages of hot end can be prevented from causing EGR valve clamping stagnation, difficult disassembly etc. because of exhaust gas gum deposit therefore
Barrier, but this arrangement is very high to the heat resistant requirements of EGR valve ontology.It is resistance to EGR valve that EGR valve, which is arranged in the advantages of cold end,
It is hot to require lower, but easily cause EGR valve clamping stagnation, difficult disassembly.
Summary of the invention
The object of the present invention is to provide a kind of flow adjusting structures of exhaust piping in egr system, to solve the prior art
In technical problem, it can replace EGR valve play adjust air-flow valve function, while solve traditional EGR valve it is preposition intolerant to
The problem of high temperature, postposition easy clamping stagnation.
The present invention provides a kind of flow adjusting structures of exhaust piping in egr system, comprising:
Conducting element is movably set in exhaust piping, the inner wall of the outside wall surface of the conducting element and the exhaust steam passage
Between formed variable diameter gas passage；
Actuator, the force side of the actuator are connect with the conducting element.
The flow adjusting structure of exhaust piping in egr system as described above, wherein preferably, the conducting element packet
Deflector is included, the first end of the deflector is articulated in the inner wall of the exhaust piping by shaft.
The flow adjusting structure of exhaust piping in egr system as described above, wherein preferably, the conducting element
Second end forms cambered surface bending.
The flow adjusting structure of exhaust piping in egr system as described above, wherein preferably, the actuator packet
Include electromagnetic driver and connecting rod, one end of the connecting rod is connect with the output end of the electromagnetic driver, the connecting rod it is another
One end extends into the exhaust piping and connect with the second end of the deflector.
The flow adjusting structure of exhaust piping in egr system as described above, wherein preferably, the exhaust piping
Outside wall surface on be provided with guide pad, through there is guide groove on the guide pad, the connecting rod clearance fit is in the guide groove
It is interior.
Compared with prior art, the present invention is by not only realizing control in conducting element and actuator are arranged in exhaust piping
System adjusts the function of exhaust gas, that is, plays the role of EGR valve, and thoroughly prevent this valve mechanism of EGR valve because of exhaust gas mistake
It is cold to lead to EGR valve clamping stagnation caused by gum deposit, difficult disassembly, while the heat resistance demand of EGR valve ontology is reduced, it reduces
To the high request of material, cost is reduced.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Description of symbols: 1- exhaust piping, 2- deflector, 3- shaft, the bending of 4- cambered surface, 5- electromagnetic driver, 6- connect
Bar, 7- guide pad, 8- guide groove, 9- gas passage.
Specific embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, for explaining only the invention, and cannot be construed to
Limitation of the present invention.
As shown in Figure 1, the embodiment provides a kind of flow adjusting structure of exhaust piping in egr system, packet
Include: conducting element is movably set in exhaust piping 1, between the outside wall surface of the conducting element and the inner wall of the exhaust steam passage
The gas passage 9 of variable diameter is formed, to control the exhaust gas flow in the unit time, when needing more exhaust gas to be sent into, gas passage 9
Expand, when needing less exhaust gas, gas passage 9 reduces.
Actuator, the force side of the actuator are connect with the conducting element, driving conducting element movement, different big to be formed
Small gas passage 9.
Above-described embodiment is by not only realizing control and regulation exhaust gas in conducting element and actuator are arranged in exhaust piping 1
Function, that is, play the role of EGR valve, and thoroughly prevent this valve mechanism of EGR valve because exhaust gas supercooling lead to gum deposit
The problems such as caused EGR valve clamping stagnation, difficult disassembly, while the heat resistance demand of EGR valve ontology is reduced, reduce the height to material
It is required that reducing cost.
Further, the conducting element includes deflector 2, and the first end of the deflector 2 is articulated in described by shaft 3
The inner wall of exhaust piping 1, the deflector 2 are board face structure, when the overturning of deflector 2 to extreme position, gas passage 9
Minimum, exhaust gas throughput is minimum, deflector 2 close to exhaust piping 1 inner wall when, gas passage 9 is maximum, and exhaust gas throughput is most
It is more, by the way that different 2 rotational angles of deflector is arranged, to control admission pressure and flow velocity.
It further, is the preferably guidance smooth gas coming through channel 9 of gas, the second end of the conducting element forms cambered surface
Bending 4.
Further, the actuator includes electromagnetic driver 5 and connecting rod 6, one end and the electromagnetism of the connecting rod 6
The output end of driver 5 connects, and the other end of the connecting rod 6 extends into second with the deflector 2 in the exhaust piping 1
End connection.Under normality, deflector 2 is bonded with the inner wall of exhaust piping 1, and electromagnetic driver 5 works, and drives connecting rod 6 flexible, with control
The flip angle of deflector 2 processed, it is convenient and efficient, it is reliable and stable.
Further, to guide the stretching motion of connecting rod 6, and deflector 2 is made to keep a metastable flip-like of essence
State, is provided with guide pad 7 in the outside wall surface of the exhaust piping 1, through having guide groove 8, the connecting rod 6 on the guide pad 7
Clearance fit is in the guide groove 8.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (5)
1. the flow adjusting structure of exhaust piping in a kind of egr system characterized by comprising
Conducting element is movably set in exhaust piping, between the outside wall surface of the conducting element and the inner wall of the exhaust steam passage
Form the gas passage of variable diameter；
Actuator, the force side of the actuator are connect with the conducting element.
2. the flow adjusting structure of exhaust piping in egr system according to claim 1, it is characterised in that: the water conservancy diversion
Part includes deflector, and the first end of the deflector is articulated in the inner wall of the exhaust piping by shaft.
3. the flow adjusting structure of exhaust piping in egr system according to claim 2, it is characterised in that: the water conservancy diversion
The second end of part forms cambered surface bending.
4. the flow adjusting structure of exhaust piping in egr system according to claim 3, it is characterised in that: the driving
Part includes electromagnetic driver and connecting rod, and one end of the connecting rod is connect with the output end of the electromagnetic driver, the connecting rod
The other end extend into the exhaust piping and connect with the second end of the deflector.
5. the flow adjusting structure of exhaust piping in egr system according to claim 4, it is characterised in that: the exhaust gas
Guide pad is provided in the outside wall surface of pipeline, running through on the guide pad has guide groove, and the connecting rod clearance fit is led in described
Into slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303380.0A CN109458278A (en) | 2018-11-02 | 2018-11-02 | The flow adjusting structure of exhaust piping in a kind of egr system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303380.0A CN109458278A (en) | 2018-11-02 | 2018-11-02 | The flow adjusting structure of exhaust piping in a kind of egr system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109458278A true CN109458278A (en) | 2019-03-12 |
Family
ID=65609230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811303380.0A Pending CN109458278A (en) | 2018-11-02 | 2018-11-02 | The flow adjusting structure of exhaust piping in a kind of egr system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109458278A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354528A (en) * | 1980-12-10 | 1982-10-19 | Uop Inc. | Poppet damper with gas flow turning means |
| CN1147850A (en) * | 1994-04-11 | 1997-04-16 | 考克瑞尔机械工业有限公司 | Fume deflecting damper for combined cycle power stations |
| CN1185195A (en) * | 1995-03-31 | 1998-06-17 | 西门子电气有限公司 | Butterfly valve for EGR |
| CN2392047Y (en) * | 1999-05-25 | 2000-08-16 | 海尔集团公司 | Electromagnetic valve for water pump |
| US6928994B2 (en) * | 2001-11-08 | 2005-08-16 | Siemens Vdo Automotive, Inc. | Modular exhaust gas recirculation assembly |
| CN1818438A (en) * | 2005-02-02 | 2006-08-16 | 艾默生电气公司 | Adjustable flow rate valve |
| CN103174470A (en) * | 2011-12-23 | 2013-06-26 | 曼卡车和巴士奥地利股份公司 | Throttling assembly of a throttling gear for controlling and/or adjusting brake operation of motor |
| CN104763559A (en) * | 2015-03-22 | 2015-07-08 | 上海鲁交测控科技有限公司 | Intake air leading-out type exhaust air re-circulating device |
| CN104763558A (en) * | 2015-03-11 | 2015-07-08 | 上海鲁交测控科技有限公司 | Low-pressure exhaust recirculation device |
| CN104813083A (en) * | 2012-11-27 | 2015-07-29 | 大陆汽车有限责任公司 | Valve |
-
2018
- 2018-11-02 CN CN201811303380.0A patent/CN109458278A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354528A (en) * | 1980-12-10 | 1982-10-19 | Uop Inc. | Poppet damper with gas flow turning means |
| CN1147850A (en) * | 1994-04-11 | 1997-04-16 | 考克瑞尔机械工业有限公司 | Fume deflecting damper for combined cycle power stations |
| CN1185195A (en) * | 1995-03-31 | 1998-06-17 | 西门子电气有限公司 | Butterfly valve for EGR |
| CN2392047Y (en) * | 1999-05-25 | 2000-08-16 | 海尔集团公司 | Electromagnetic valve for water pump |
| US6928994B2 (en) * | 2001-11-08 | 2005-08-16 | Siemens Vdo Automotive, Inc. | Modular exhaust gas recirculation assembly |
| CN1818438A (en) * | 2005-02-02 | 2006-08-16 | 艾默生电气公司 | Adjustable flow rate valve |
| CN103174470A (en) * | 2011-12-23 | 2013-06-26 | 曼卡车和巴士奥地利股份公司 | Throttling assembly of a throttling gear for controlling and/or adjusting brake operation of motor |
| CN104813083A (en) * | 2012-11-27 | 2015-07-29 | 大陆汽车有限责任公司 | Valve |
| CN104763558A (en) * | 2015-03-11 | 2015-07-08 | 上海鲁交测控科技有限公司 | Low-pressure exhaust recirculation device |
| CN104763559A (en) * | 2015-03-22 | 2015-07-08 | 上海鲁交测控科技有限公司 | Intake air leading-out type exhaust air re-circulating device |
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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 | ||
| CB02 | Change of applicant information |
Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190312 |
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| RJ01 | Rejection of invention patent application after publication |