CN205025643U - EGR waste gas mixed organization - Google Patents
EGR waste gas mixed organization Download PDFInfo
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- CN205025643U CN205025643U CN201520770432.0U CN201520770432U CN205025643U CN 205025643 U CN205025643 U CN 205025643U CN 201520770432 U CN201520770432 U CN 201520770432U CN 205025643 U CN205025643 U CN 205025643U
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- impeller
- pipeline
- waste gas
- mixed organization
- gas mixed
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Abstract
The utility model discloses a EGR waste gas mixed organization, include: pipeline, impeller, impeller shaft and impeller support, the one end of pipeline is connected with engine air intake manifold, and the other end is connected with the EGR system, impeller, impeller shaft and impeller support all set up inside the pipeline, and the impeller is two at least, and the rotation in the opposite direction of adjacent impeller, the impeller all cup joints on the impeller shaft, the impeller support is two, its and the axis of pipeline perpendicular setting the mutually, and the one end of impeller support is connected with the inner wall of pipeline, and the other end is connected with the impeller shaft. This kind of EGR waste gas mixed organization improves optimization through the structure to the pipeline, and at the inside impeller that sets up a plurality of mutual reverse rotation that increases of pipeline, EGR waste gas and fresh air can utilize a plurality of reverse rotation's impeller to produce the strong vortex through " windmill " principle to make the mist can carry out abundant integration in the pipeline, effectively improve the mixing uniformity of mist.
Description
Technical field
The utility model belongs to Engine Exhaust Emission technical field, is specifically related to a kind of EGR waste gas mixed organization.
Background technique
EGR (ExhaustGasRecirculation is called for short EGR) is the effective measures controlling Diesel NOx.The mixing uniformity of EGR waste gas and fresh air is the important indicator ensureing engine power, discharge etc., if it is even not that EGR waste gas mixes with fresh air, so mixed gas can cause local oxygen content few after entering cylinder, have a huge impact in-cylinder combustion, concrete harm has: insufficient detonation pressure that causes that burns reduces thus affects power character; Burn insufficient SOF caused in exhausting air, soot content increase, discharge of poisonous waste amount is increased; Under extreme case, mixed gas mixing uniformity extreme difference can cause cylinder " to catch fire ", thus engine power and discharge are sharply deteriorated.
In order to ensure the mixing uniformity of EGR waste gas and fresh air in prior art, usually adopt in two ways: first, increase mixed pipe line, ensure that EGR waste gas and fresh air have longer incorporation time and space by the pipeline of a section longer, thus ensure mixing uniformity.The disadvantage of this method is that required pipeline is very long, often occupy very large arrangement space, and long pipe runs also brings the reduction of reliability and the increase of cost; Second method is inserted in air pipe by EGR waste gas by section of a pipe, EGR waste gas and air inlet is made to produce a kind of effect of adverse current, but the negative effect that this method is brought is because EGR air pipe occupies the space of suction tude, therefore the drag effects charging efficiency adding charge air flow greatly, and be unfavorable for the importing of EGR waste gas.
Model utility content
The purpose of this utility model is to provide a kind of EGR waste gas mixed organization, utilize " windmill " principle by reasonably design, mixed gas flow to be stimulated the menstrual flow the mutual counterrotating of multiple impeller, mixed gas mixing uniformity is improved greatly, thus solution pipeline is long, take up room the problem large, reliability is low, cost is higher; Can also solve because EGR air pipe inserts the problem of the mixing uniformity difference that air inlet tube angle and length cause simultaneously.
For achieving the above object, the utility model provides following technological scheme:
A kind of EGR waste gas mixed organization, comprising: pipeline, impeller, impeller shaft and impeller bracket;
One end of described pipeline is connected with engine intake manifold, and the other end is connected with egr system;
Described impeller, described impeller shaft and described impeller bracket are all arranged on described channel interior, and described impeller is at least two, and the direction of rotation of adjacent described impeller; Described impeller is all socketed on described impeller shaft; Described impeller bracket is two, and the axis perpendicular of itself and described pipeline is arranged, and one end of described impeller bracket is connected with the inwall of described pipeline, and the other end is connected with described impeller shaft.
Preferably, described pipeline is columnar structured, and the external diameter of described pipeline is 34mm ~ 36mm, and the internal diameter of described pipeline is 29mm ~ 31mm.
Preferably, described impeller comprises blade and rotation section, and described blade is multiple, and uniform ring is around on described rotation section; The center of described rotation section is provided with axis hole, and described shaft hole sleeve is connected on described impeller shaft.
Preferably, the external diameter of described impeller is 24mm ~ 26mm.
Preferably, described blade is 39 ° ~ 41 ° relative to the axis tilt angle of described impeller.
Preferably, described impeller shaft is cylindrical structural, and be at least provided with a loop at the middle part of described impeller shaft protruding, the both sides of described annular projection are each passed through a described impeller.
Preferably, described impeller bracket comprises supporting portion and fixing part, one end of described supporting portion is connected with described pipeline inner wall, the other end is connected with described fixing part, described fixing part is cirque structure, described impeller shaft through the circle ring center of described fixing part, and is connected with described fixing part.
Preferably, described supporting portion is three conical plates, is evenly distributed on the periphery of described fixing part.
The beneficial effects of the utility model are:
A kind of EGR waste gas mixed organization of the present utility model, by improving and optimizating the structure of pipeline, the impeller of multiple mutual counterrotating is set in channel interior increase, when EGR waste gas and fresh air enter into the pipeline of waste gas mixed organization by egr system, utilize the impeller of multiple counterrotating mixed gas can be produced strong eddy current by " windmill " principle, thus mixed gas can be merged fully in pipeline, effectively improve the mixing uniformity of mixed gas; Mixed gas after fully mixed enters in the intake manifold of motor by pipeline, can ensure that the mixed gas otherness in each cylinder of motor is less than 5%, thus significantly reduce the discharge of harmful gas, effective running efficiency and the Security improving motor.Utilize in pipeline the mode that impeller is set in addition, significantly can also reduce the length of pipeline, make EGR waste gas mixed organization be more prone to be arranged between egr system and engine intake manifold, conveniently carry out installing and keeping in repair, and effectively decrease cost of production; Pipeline simultaneously after shortening can also reduce the pressure loss of mixed gas, thus increases reliability and the working life of EGR waste gas mixed organization.
Accompanying drawing explanation
Next will be described in further detail specific embodiment of the utility model by reference to the accompanying drawings, wherein:
Fig. 1 is the mixed organization plan view of the utility model embodiment;
Fig. 2 is the mixed organization sectional view of the utility model embodiment;
Fig. 3 is the pipeline structure figure of the utility model embodiment;
Fig. 4 is the blade wheel structure figure of the utility model embodiment;
Fig. 5 is the impeller shaft structural drawing of the utility model embodiment.
Mark in upper figure:
1, pipeline 2, impeller 3, impeller shaft
4, impeller bracket
21, blade 22, rotation section 23, axis hole
31, annular projection
41, supporting portion 42, fixing part
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
As shown in Figures 1 to 5, a kind of EGR waste gas mixed organization of the present utility model, comprising: pipeline 1, impeller 2, impeller shaft 3 and impeller bracket 4; One end of pipeline 1 is connected with engine intake manifold, and the other end is connected with egr system; It is inner that impeller 2, impeller shaft 3 and impeller bracket 4 are all arranged on pipeline 1, and impeller 2 is at least two, and the direction of rotation of adjacent fan-wheel 2; Impeller 2 is all socketed on impeller shaft 3; Impeller bracket 4 is two, and the axis perpendicular of itself and pipeline 1 is arranged, and one end of impeller bracket 4 is connected with the inwall of pipeline 1, and the other end is connected with impeller shaft 3.A kind of EGR waste gas mixed organization of the present utility model, by improving and optimizating the structure of pipeline 1, the impeller 2 that multiple mutual counterrotating is set is increased in pipeline 1 inside, when EGR waste gas and fresh air enter into the pipeline 1 of waste gas mixed organization by egr system, utilize the impeller 2 of multiple counterrotating just can produce strong eddy current by " windmill " principle by mixed gas, thus mixed gas can be merged fully in pipeline 1, effectively improve the mixing uniformity of mixed gas; Mixed gas after fully mixed enters in the intake manifold of motor by pipeline 1, can ensure that the mixed gas otherness in each cylinder of motor is less than 5%, thus significantly reduce the discharge of harmful gas, effective running efficiency and the Security improving motor.Utilize the mode that impeller 2 is set in pipeline 1 in addition, significantly can also reduce the length of pipeline 1, make EGR waste gas mixed organization be more prone to be arranged between egr system and engine intake manifold, conveniently carry out installing and keeping in repair, and effectively decrease cost of production; Pipeline 1 simultaneously after shortening can also reduce the pressure loss of mixed gas, thus increases reliability and the working life of EGR waste gas mixed organization.
As shown in Figure 3, pipeline 1 is columnar structured, because pipeline 1 mainly plays the effect that EGR waste gas and fresh air carry out mixing and passing through, and because the spatial constraints in vehicle engine compartments, the pipeline 1 be arranged between egr system and engine intake manifold is more short better, therefore in the utility model, the external diameter of preferred pipeline 1 is 34mm ~ 36mm, the internal diameter of pipeline 1 is 29mm ~ 31mm, pipeline 1 under this size can ensure enough spaces and arrange impeller 2, can also ensure in pipeline 1, all have enough spaces to carry out the mixing of EGR waste gas and fresh air, the wall thickness of pipeline 1 is about 5mm, can not only ensure that pipeline 1 has enough intensity, can not produce breakage or fracture, but also can make the shorten length of pipeline 1, can save arrangement space, and be easy for installation and maintenance because of the rotation stress of impeller.
As shown in Figure 4, impeller 2 comprises blade 21 and rotation section 22, and blade 21 is multiple, and uniform ring is around on rotation section 22; The center of rotation section 22 is provided with axis hole 23, and axis hole 23 is socketed on impeller shaft 3.The strength of vortex that the mixed gas that the quantity of impeller 2 determines EGR waste gas and fresh air is produced by " windmill " principle, also determine degrees of fusion and the mixing uniformity of mixed gas simultaneously, according to the difference of different automobile types engine power, impeller 2 pairs of mixed gass that can arrange multiple mutual counterrotating merge fully, in embodiment of the present utility model, preferably adopt the impeller 2 of two mutual counterrotatings to produce the eddy current of interference mutually, thus EGR waste gas and fresh air can be mixed fully; It can also be seen that from Fig. 4, in embodiment of the present utility model also preferred on each impeller 2 adopt six blades 21, and the external diameter of preferred impeller 2 is 24mm ~ 26mm, so not only can make mixed gas can reciprocating impact between two impellers 2, but also make pipeline 1 inside can produce enough pressure, thus ensure that abundant mixed mixed gas can through smooth and easy conveying in engine intake manifold after impeller 2; And the external diameter employing of impeller 2 is less than pipeline 1 internal diameter about 5mm, mixed gas can be made after fully mixed, can be expelled in engine intake manifold from impeller 2 smoothly, ensure that the mixed gas otherness in each cylinder of motor is less than 5% with this, thus significantly reduce the discharge of harmful gas, effective running efficiency and the Security improving motor.
Blade 21 can have influence on the mixing efficiency of mixed gas with the deflection angle of impeller 2 axis and pass through efficiency, can verify through test repeatedly, when blade 21 is excessive relative to the axis tilt angle of impeller 2, mixed gas can be caused in by blade 21 process to cause clamping stagnation, thus the mixed gas scale of construction entered in engine intake manifold is reduced, and the adverse current of mixed gas can be caused, directly have influence on the efficiency of engine secondary burning, increase the discharge numerical value of vehicle; And when the axis tilt angle too small of blade 21 relative to impeller 2, the gap between blade 21 can be caused excessive, thus make mixed gas too fast enter in engine intake manifold by impeller 2, not only the mixing uniformity of mixed gas is poor, and cylinder time serious, also can be caused too much to cause " catching fire " because of waste gas, directly affect working efficiency and the Security of motor.Therefore in the utility model, preferably blade 21 is adopted to be 39 ° ~ 41 ° relative to the axis tilt angle of impeller 2, under this deflection angle, mixed gas not only can pass from the gap between blade 21 smoothly, but also can merge fully between two impellers 2, thus ensure that the mixed gas entered in cylinder has very high mixing uniformity; It can also be seen that from Fig. 4 in addition, blade 21 itself has certain windup-degree, in the S shape structure of trace, this structure can make the mixed gas flowing through blade 21 surface know from experience and produce certain wave effect, when different mixed gas waves mutually collide affect time, can accelerate the fusion efficiencies of mixed gas between impeller 2, this structure can also reduce the mixed gas impact stress suffered by blade 21 surface simultaneously, thus effective working efficiency and working life of improving impeller 2.Certainly, according to the engine power of different automobile types and the difference of number of cylinders, the quantity of blade 21 and deflection angle can adjust as required, do not limit in the utility model embodiment.
As can be seen from Figure 5, impeller shaft 3 is cylindrical structural, is at least provided with a loop projection 31 at the middle part of impeller shaft 3, and the both sides of annular projection 31 are each passed through an impeller 2.Impeller 2 is socketed on impeller shaft 3 by axis hole 23, in order to ensure not produce collision between two adjacent impellers 2 reversed mutually, the middle part of impeller shaft 3 is provided with annular projection 31, according to the difference of different automobile types engine power and number of cylinders, the impeller 2 of multiple adjacent reversion can be set in pipeline 1, match with impeller 2 in the utility model, preferred employing annular projection 31, not only can prevent from producing collision between two impellers 2, but also the angle of swing of impeller 2 can be ensured, thus the mixing efficiency of effective raising mixed gas between impeller 2, ensure the secondary combustion efficiency of motor.
As shown in Figure 3, impeller bracket 4 comprises supporting portion 41 and fixing part 42, and one end of supporting portion 41 is connected with pipeline 1 inwall, the other end is connected with institute fixing part 42, fixing part 42 is cirque structure, and impeller shaft 3 through the circle ring center of fixing part 42, and is connected with fixing part 42.Effect impeller shaft 3 and impeller 2 are supported in pipeline 1 is mainly played in supporting portion 41, when impeller 2 rotates in pipeline 1, the vibration stress that the impeller 2 of two mutual reversions brings and warping stress are delivered on supporting portion 41 by impeller shaft 3, be dispersed on pipeline 1 through supporting portion 41 again, therefore the intensity of supporting portion 41 directly has influence on the rotational efficienty of impeller 2, also just directly has influence on the mixing efficiency of mixed gas.As can be seen from Figure 3, in the utility model, preferred supporting portion 41 is three conical plates, and supporting portion 41 is evenly distributed on the periphery of fixing part 42.Namely the supporting portion 41 of three conical plates is arranged in the periphery of fixing part 42 in equilateral triangle, the various stress that impeller 2 so just can be made to bring can be dispersed on pipeline 1 by the supporting portion 41 of three taper tabulars, thus the stress influence reduced suffered by impeller shaft 3, it can also be seen that from Fig. 3 in addition, the supporting portion 41 of taper tabular is narrower close to fixing part 42 place, and it is wider at the inwall place close to pipeline 1, the stress that so just impeller 2 can be brought is disperseed to wide end by the narrow end of supporting portion 41, because the wide end of supporting portion 41 can hold more stress, supporting portion 41 so just can be made to be connected with fixing part 42 holds intensity larger, larger stress can be born, thus effective guarantee impeller 2 can rotate by stable carrying out, significantly increase reliability and the working life of EGR waste gas mixed organization, and make can be merged by stable carrying out by the mixed gas of pipeline 1, the secondary combustion efficiency of effective raising motor and Security.Certainly, according to the power of vehicle motor and the difference of number of cylinders, also can be that rectangular slab or arc plate are gained in strength by the profile design of supporting portion 41, not limit in embodiment of the present utility model.
Structure of the present utility model, feature and action effect is described in detail above according to illustrated embodiment; the foregoing is only preferred embodiment of the present utility model; but the utility model does not limit practical range with shown in drawing; every change done according to conception of the present utility model; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet specification with diagram contain spiritual time, all should in protection domain of the present utility model.
Claims (8)
1. an EGR waste gas mixed organization, is characterized in that, comprising: pipeline, impeller, impeller shaft and impeller bracket;
One end of described pipeline is connected with engine intake manifold, and the other end is connected with egr system;
Described impeller, described impeller shaft and described impeller bracket are all arranged on described channel interior, and described impeller is at least two, and the direction of rotation of adjacent described impeller; Described impeller is all socketed on described impeller shaft; Described impeller bracket is two, and the axis perpendicular of itself and described pipeline is arranged, and one end of described impeller bracket is connected with the inwall of described pipeline, and the other end is connected with described impeller shaft.
2. EGR waste gas mixed organization according to claim 1, is characterized in that, described pipeline is columnar structured, and the external diameter of described pipeline is 34mm ~ 36mm, and the internal diameter of described pipeline is 29mm ~ 31mm.
3. EGR waste gas mixed organization according to claim 1, it is characterized in that, described impeller comprises blade and rotation section, and described blade is multiple, and uniform ring is around on described rotation section; The center of described rotation section is provided with axis hole, and described shaft hole sleeve is connected on described impeller shaft.
4. EGR waste gas mixed organization according to claim 3, is characterized in that, the external diameter of described impeller is 24mm ~ 26mm.
5. EGR waste gas mixed organization according to claim 4, is characterized in that, described blade is 39 ° ~ 41 ° relative to the axis tilt angle of described impeller.
6. EGR waste gas mixed organization according to claim 1, is characterized in that, described impeller shaft is cylindrical structural, and be at least provided with a loop at the middle part of described impeller shaft protruding, the both sides of described annular projection are each passed through a described impeller.
7. EGR waste gas mixed organization according to claim 1, it is characterized in that, described impeller bracket comprises supporting portion and fixing part, one end of described supporting portion is connected with described pipeline inner wall, the other end is connected with described fixing part, described fixing part is cirque structure, and described impeller shaft through the circle ring center of described fixing part, and is connected with described fixing part.
8. EGR waste gas mixed organization according to claim 7, is characterized in that, described supporting portion is three conical plates, is evenly distributed on the periphery of described fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770432.0U CN205025643U (en) | 2015-09-29 | 2015-09-29 | EGR waste gas mixed organization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770432.0U CN205025643U (en) | 2015-09-29 | 2015-09-29 | EGR waste gas mixed organization |
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| CN205025643U true CN205025643U (en) | 2016-02-10 |
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| CN201520770432.0U Expired - Fee Related CN205025643U (en) | 2015-09-29 | 2015-09-29 | EGR waste gas mixed organization |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114217A (en) * | 2015-09-29 | 2015-12-02 | 安徽江淮汽车股份有限公司 | EGR waste gas mixing mechanism |
| CN105971771A (en) * | 2016-06-27 | 2016-09-28 | 广东康菱动力科技有限公司 | Fuel gas homogenization treatment device |
| CN112282983A (en) * | 2020-10-29 | 2021-01-29 | 东风商用车有限公司 | Turbulence type integrated mixer for natural gas engine |
| CN113374601A (en) * | 2021-06-10 | 2021-09-10 | 东风商用车有限公司 | Dynamic turbine type integrated EGR mixer |
-
2015
- 2015-09-29 CN CN201520770432.0U patent/CN205025643U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114217A (en) * | 2015-09-29 | 2015-12-02 | 安徽江淮汽车股份有限公司 | EGR waste gas mixing mechanism |
| CN105971771A (en) * | 2016-06-27 | 2016-09-28 | 广东康菱动力科技有限公司 | Fuel gas homogenization treatment device |
| CN112282983A (en) * | 2020-10-29 | 2021-01-29 | 东风商用车有限公司 | Turbulence type integrated mixer for natural gas engine |
| CN112282983B (en) * | 2020-10-29 | 2023-05-12 | 东风商用车有限公司 | Turbulent flow type integrated mixer for natural gas engine |
| CN113374601A (en) * | 2021-06-10 | 2021-09-10 | 东风商用车有限公司 | Dynamic turbine type integrated EGR mixer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20190929 |