CN103541837B - Engine egr connecting pipeline - Google Patents
Engine egr connecting pipeline Download PDFInfo
- Publication number
- CN103541837B CN103541837B CN201310524923.2A CN201310524923A CN103541837B CN 103541837 B CN103541837 B CN 103541837B CN 201310524923 A CN201310524923 A CN 201310524923A CN 103541837 B CN103541837 B CN 103541837B
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- CN
- China
- Prior art keywords
- pipe
- egr
- movable pipe
- intake manifold
- gas port
- 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.)
- Expired - Fee Related
Links
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims abstract description 7
- 230000008034 disappearance Effects 0.000 claims abstract description 3
- 230000001737 promoting effect Effects 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 48
- 239000002912 waste gas Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The present invention relates to a kind of pipeline jointing construction be applied in vehicle motor egr system, particularly relate to a kind of engine EGR connecting pipeline, it EGR pipe comprising intake manifold, be connected with intake manifold, in EGR pipe, slip is provided with gas pressure in EGR pipe and probes into the movable pipe in intake manifold under promoting, and movable pipe is provided with gas port intake manifold being communicated with when it probes in intake manifold with EGR pipe; Also comprise and act on movable pipe, the recovery device driven during gas pressure disappearance in EGR pipe in movable pipe retraction EGR pipe.Adopt technological scheme of the present invention, avoid the EGR pipe when non-EGR work and, to the stop of the air-flow in intake manifold, improve the performance of motor.
Description
Technical field
The present invention relates to a kind of pipeline jointing construction be applied in vehicle motor egr system, particularly relate to a kind of engine EGR connecting pipeline.
Background technique
EGR (EGR) working principle is that a part of waste gas is incorporated into cylinder, owing to containing H in exhaust gas constituents
2o, CO
2, mixed gas thermal capacity is improved, thus burning maximum temperature is declined, reduce NOx emission concentration.Egr system generally realizes circulation by internal EGR and outside EGR two kinds of modes.The outside EGR of internal EGR difference, its essence is and to realize by expanding valve overlap.Outside EGR is exactly the EGR of usual indication, introduces intake manifold by portion in gas exhaust manifold through exterior line, makes waste gas participate in burning again, thus realizes EGR circulation.The internal-combustion engine of the outside EGR technology of current employing, waste gas is connected with intake manifold by outside EGR pipe, and in this linkage structure, EGR pipe stretches into a part in intake manifold, this stretches into a portion's separately independent hole or pass through aperture of intake manifold, achieves and waste gas is mixed with fresh air.But adopt this structure, mix with fresh air to complete waste gas because EGR pipe stretches in intake manifold, do not needing the operating point of EGR, the EGR pipe stretched into can hinder air inlet on the contrary, affects engine power performance.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind of EGR pipe that can reduce when not needing the operating point of EGR to the obstruction of charge air flow, to improve the engine EGR connecting pipeline of engine power performance.
For achieving the above object, engine EGR connecting pipeline of the present invention, the EGR pipe comprising intake manifold, be connected with intake manifold, in EGR pipe, slip is provided with gas pressure in EGR pipe and probes into the movable pipe in intake manifold under promoting, and movable pipe is provided with gas port intake manifold being communicated with when it probes into intake manifold Inner with EGR pipe; Also comprise and act on movable pipe, the recovery device driven during gas pressure disappearance in EGR pipe in movable pipe retraction EGR pipe.
Movable pipe and EGR pipe are slidably matched and arrange, when egr system is worked, by waste gas, pressure is applied to movable pipe, movable pipe is insinuated in intake manifold, and by gas port, achieves the mixing of waste gas and air inlet under this state, time in EGR pipe without exhaust gas pressure, movable pipe is retracted in EGR pipe by returning device, avoids the obstruction of movable pipe to gas in intake manifold, improves engine efficiency.
As the restriction to aforesaid way, described gas port be along the circumference of movable pipe arrange multiple.Gas port is arranged in the circumference of movable pipe, the direction that in movable pipe, waste gas is discharged can be changed, improve the air inlet mixed effect in waste gas and intake manifold.
As the restriction to aforesaid way, described gas port is the long hole shape arranged along movable pipe length direction.Gas port is set to long hole shape, make movable pipe in the process probeed into intake manifold, to the air inlet in intake manifold, movable pipe stops that area increases, direction can be changed and pressure increase under the outer wall effect of movable pipe, meanwhile, owing to probeing in process by the air inlet stopped, the port area be communicated with intake manifold increases gradually, make movable pipe before stopping the steady state probeing into, waste gas mixes more abundant with air inlet, improve the air inlet effect of egr system motor when starting working.
Limit as to another kind of form of the present invention, described gas port comprises the first gas port being arranged on movable pipe top and the second gas port being arranged on movable pipe radial side bottom.By the setting of the first gas port and the second gas port position, during the air pressure that air pressure in air inlet pipeline is greater than in movable pipe, portion gas in air inlet pipeline is entered in movable pipe by the first gas port and mixes with waste gas, because the second gas port and the first gas port non-co-center line are arranged, the gas entered in movable pipe can clash into movable pipe bottom internal, form the air-flow of vortex, improve the mixed effect with waste gas, simultaneously, second gas port changes the discharge direction of mixed airflow, the mixed gas of discharging and the air-flow of movable pipe outside form eddy airstream again, improve the mixed effect of overall mixed airflow.
As the restriction to aforesaid way, the area of described second gas port is less than the area of the first gas port.By this setting, make mixed airflow pressure increase when the second gas port is discharged, improve after discharging and the mixed effect of the charge air flow of movable pipe outside.
As the restriction to such as upper type, described recovery device is spring movable pipe being applied to elastic acting force.
As the further restriction to aforesaid way, described spring connection is arranged between the end of movable pipe and the inwall of intake manifold, and the length of described spring under nature is not less than the internal diameter of intake manifold.
As improvement of the present invention, be fixed with in the inside of intake manifold and insert in movable pipe with the guide rod led to the movement of movable pipe.By the setting of guide rod, improve the stability of movable pipe in moving process.
In sum, adopt technological scheme of the present invention, avoid the GER pipe when non-EGR work and, to the stop of the air-flow in intake manifold, improve the performance of motor.
Accompanying drawing explanation
Do further to describe in detail to the present invention below in conjunction with the drawings and the specific embodiments:
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the worm's eye view of Fig. 1;
Fig. 3 is the structural representation of movable pipe in the embodiment of the present invention two.
In figure:
1, intake manifold; 2, EGR pipe; 3, flange; 4, through hole; 5, movable pipe; 6, gas port; 61, the first gas port; 62, the second gas port; 7, spring; 8, guide rod.
Embodiment
Embodiment one
Shown in Fig. 1 composition graphs 2, the engine EGR connecting pipeline that the present embodiment relates to, comprise the intake manifold 1 be connected with engine intake, and being arranged on the outside of intake manifold 1 and the EGR pipe 2 be connected by flange 3 with intake manifold 1, EGR pipe 2 provides a connecting passage for waste gas flows in intake manifold 1.Accordingly, be provided with a through hole 4 intake manifold 1 and the joint of EGR pipe 2, and EGR pipe 2 does not stretch in intake manifold 1 by this through hole 4, and be only the outer wall place of the intake manifold 1 being fixed on through hole 4 place.
Slide in EGR pipe 2 and be provided with a movable pipe 5, the outer tube diameter of this movable pipe 5 is not more than the aperture of through hole 4, when this is arranged so that movable pipe 5 slides in EGR pipe, can be insinuated in intake manifold 1 by through hole 4.Shown in Fig. 1 during state, the right-end openings of movable pipe 5, left end is closed, like this, the waste gas in EGR pipe 2 just can, by the right-end openings place of movable pipe 5, enter in movable pipe 5, and by applying pressure to movable pipe 5 left end, promote movable pipe 5 to slide under state shown in Fig. 1 left.
The circumference of movable pipe 5 is provided with gas port 6, and when movable pipe 5 probes into intake manifold 1 Inner, gas port 6 achieves being communicated with of movable pipe 5 and intake manifold 1, finally to realize being communicated with of intake manifold 1 and EGR pipe 2.In the present embodiment, gas port 6 is four of the circumferential equal angles setting along movable pipe 5, and its each gas port 6 is the long hole shape arranged with the parallel to an axis of movable pipe 5.
In addition, between intake manifold 1 and movable pipe 5, be provided with recovery device, the design philosophy of this recovery device is by applying restoring force to movable pipe 5, when disappearing to make in EGR pipe 2 gas pressure, can drive in movable pipe 5 indentation EGR pipe 2.In the present embodiment, recovery device adopts spring 7, and one end of spring 7 is connected on the inwall of intake manifold 1, and the other end is fixedly connected on the left end of movable pipe 5.Can be retracted to completely to prevent from leaving the pipeline section of movable pipe 5 in intake manifold 1 in EGR pipe 2 in order to ensure the movable pipe 5 when non-EGR works, spring 7 length is in its natural state not less than the caliber of intake manifold 1.
In order to improve the stability of movable pipe 5 in moving process, the inwall of intake manifold 1 is fixed with guide rod 8, guide rod 8 is arranged with the parallel to an axis of movable pipe 5, and the right-hand member of guide rod 8 is inserted in movable pipe 5.In order to ensure the shift motion of movable pipe, in the present embodiment, the right-hand member of guide rod 8 extends to the right in EGR pipe 2.Be inserted in movable pipe 5 to realize guide rod 8, the left side closed end of movable pipe 5 is provided with a through hole inserted for guide rod 8.
When egr system works, waste gas is had to flow through in EGR pipe 2, when this waste gas enters in movable pipe 5, apply air pressure to the left end of movable pipe 5, movable pipe 5 slides left under the guiding of guide rod 8, and spring 7 is progressively compressed, movable pipe 5 is in sliding process left, gas port 6 is communicated with intake manifold 1 by stretching out in EGR pipe gradually, until when movable pipe 5 is pushed out to steady state, gas port 6 reaches maximum with the area that is communicated with of intake manifold 1.When non-EGR operation point, the waste gas air pressure in movable pipe 5 disappears, and movable pipe 5, under the elastic-restoring force effect of spring 7, slides to the right, until be retracted to completely in EGR pipe, now spring 7 in the raw.
Embodiment two
The engine EGR connecting pipeline that the present embodiment relates to, substantially identical with embodiment one, difference is that the gas port on movable pipe 5 is arranged, in order to the setting of air outlet clearly can be seen, in Fig. 3, the closed left end of movable pipe is opened, gas port then comprises described gas port and comprises the first gas port 61 being arranged on movable pipe top and two the second gas port 62, first gas ports 61 being arranged on movable pipe 5 radial side bottom and two the second gas ports 62 in the central angle such as axis of movable pipe 5 and arrange.In addition, in order to strengthen the mixed effect of the air inlet in waste gas and air inlet pipeline, the area sum of two the second gas ports 62 can be arranged to the area being less than the first gas port 61.
It is more than the exemplary illustration to design philosophy of the present invention; in actual application; adaptive change can be carried out based on design philosophy of the present invention; be connected between movable pipe and the tube wall of EGR pipe as spring 7 is arranged; during to be insinuated in intake manifold 1 at movable pipe, this spring is stretched, and when exhaust gas pressure disappears; movable pipe 5 retracts and to be retracted in EGR pipe etc. by spring 7, all belongs to protection scope of the present invention.
Claims (8)
1. an engine EGR connecting pipeline, the EGR pipe comprising intake manifold, be connected with intake manifold, it is characterized in that: in EGR pipe, slip is provided with gas pressure in EGR pipe and probes into the movable pipe in intake manifold under promoting, and movable pipe is provided with gas port intake manifold being communicated with when it probes in intake manifold with EGR pipe; Also comprise and act on movable pipe, the recovery device driven during gas pressure disappearance in EGR pipe in movable pipe retraction EGR pipe.
2. engine EGR connecting pipeline according to claim 1, is characterized in that: described gas port be along the circumference of movable pipe arrange multiple.
3. engine EGR connecting pipeline according to claim 2, is characterized in that: described gas port is the long hole shape arranged along movable pipe length direction.
4. engine EGR connecting pipeline according to claim 1, is characterized in that: described gas port comprises the first gas port being arranged on movable pipe top and the second gas port being arranged on movable pipe radial side bottom.
5. engine EGR connecting pipeline according to claim 4, is characterized in that: the area of described second gas port is less than the area of the first gas port.
6. engine EGR connecting pipeline according to any one of claim 1 to 5, is characterized in that: described recovery device is spring movable pipe being applied to elastic acting force.
7. engine EGR connecting pipeline according to claim 6, is characterized in that: described spring connection is arranged between the end of movable pipe and the inwall of intake manifold, and the length of described spring under nature is not less than the internal diameter of intake manifold.
8. engine EGR connecting pipeline according to claim 1, is characterized in that: be fixed with in the inside of intake manifold and insert in movable pipe with the guide rod led to the movement of movable pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524923.2A CN103541837B (en) | 2013-10-31 | 2013-10-31 | Engine egr connecting pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524923.2A CN103541837B (en) | 2013-10-31 | 2013-10-31 | Engine egr connecting pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103541837A CN103541837A (en) | 2014-01-29 |
| CN103541837B true CN103541837B (en) | 2016-03-02 |
Family
ID=49965626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310524923.2A Expired - Fee Related CN103541837B (en) | 2013-10-31 | 2013-10-31 | Engine egr connecting pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103541837B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798205B (en) * | 2019-04-11 | 2024-01-12 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) mixer and engine with same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912626B (en) * | 2015-05-20 | 2017-09-29 | 黄钦生 | A kind of automobile ultralow emission device |
| CN109736978B (en) * | 2019-04-04 | 2019-07-12 | 潍柴动力股份有限公司 | A kind of EGR mixer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3417822A1 (en) * | 1983-05-13 | 1984-11-15 | VEB IFA-Automobilwerke Ludwigsfelde Stammbetrieb des IFA-Kombinates Nutzkraftwagen, DDR 1720 Ludwigsfelde | Device for exhaust gas recirculation, especially for diesel engines |
| CN102536444A (en) * | 2012-02-07 | 2012-07-04 | 上海交通大学 | Exhaust recirculation system with elastic component |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007056752A (en) * | 2005-08-24 | 2007-03-08 | Calsonic Kansei Corp | Exhaust gas control valve |
| KR100820396B1 (en) * | 2006-12-07 | 2008-04-10 | 현대자동차주식회사 | Egr mixing device for plastic intake manifold |
| JP2010127114A (en) * | 2008-11-25 | 2010-06-10 | Mitsubishi Heavy Ind Ltd | Exhaust gas recirculation device |
-
2013
- 2013-10-31 CN CN201310524923.2A patent/CN103541837B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3417822A1 (en) * | 1983-05-13 | 1984-11-15 | VEB IFA-Automobilwerke Ludwigsfelde Stammbetrieb des IFA-Kombinates Nutzkraftwagen, DDR 1720 Ludwigsfelde | Device for exhaust gas recirculation, especially for diesel engines |
| CN102536444A (en) * | 2012-02-07 | 2012-07-04 | 上海交通大学 | Exhaust recirculation system with elastic component |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798205B (en) * | 2019-04-11 | 2024-01-12 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) mixer and engine with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103541837A (en) | 2014-01-29 |
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| SE01 | Entry into force of request for substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 |