CN103422954B - Three-way catalyst with flow rectifier - Google Patents
Three-way catalyst with flow rectifier Download PDFInfo
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- CN103422954B CN103422954B CN201310359431.2A CN201310359431A CN103422954B CN 103422954 B CN103422954 B CN 103422954B CN 201310359431 A CN201310359431 A CN 201310359431A CN 103422954 B CN103422954 B CN 103422954B
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- connecting rod
- catalyst converter
- loop device
- electromagnetism
- current equalizer
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- 239000003054 catalyst Substances 0.000 title claims abstract description 46
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a three-way catalyst with a flow rectifier. The three-way catalyst comprises a shell, a catalyst carrier, a liner, an inlet passage and an exhaust passage, wherein the inlet passage is connected with one end of the shell, and the exhaust passage is connected with the other end of the shell. The three-way catalyst also comprises a catalyst flange. The catalyst flange is connected with the inlet passage; the flow rectifier is arranged in the catalyst flange and is located in the air inlet of the inlet passage. The flow rectifier comprises an electromagnetic ring device, an electronic control unit and a plurality of blades, wherein the electromagnetic ring device is coaxial with the catalyst flange; the electronic control unit is connected with the electromagnetic ring device and is used for controlling the electromagnetic ring device to work; the blades are arranged along the circumferential direction of the electromagnetic ring device and are controlled by the electromagnetic ring device to rotate; each blade is connected with the electromagnetic ring device by a connecting rod. According to the three-way catalyst provided by the invention, the blades can be changed within a certain rotation angle range, and are completely matched with all instantaneous conditions of an engine, and therefore, the conversion efficiency and the use ratio of the three-way catalyst are effectively improved, and moreover, maximum effective power is output by the engine.
Description
Technical field
The present invention relates to a kind of ternary catalyzing unit with current equalizer, belong to motor exhaust emission control field.
Background technique
Ternary catalyzing unit plays vital effect in automobile exhaust discharge, can effectively impel the toxic and harmful produced in combustion process to carry out secondary response, is converted into non-toxic gas and is discharged in air and goes.Along with improving constantly of exhaust method Laws & Regulations, the efficiency and increasing the service life improving ternary catalyzing unit becomes the focus of present stage research, and wherein, ternary catalyzing unit internal flow uniformity is one of important indicator weighing ternary catalyzing unit validity.In existing ternary catalyzing unit, due to structural factor, make exhaust stream when three-way catalytic converter carrier part, uniformity is unstable, the optimum performance of ternary catalyzing unit cannot be brought into play, and the local catalysis intensity of transition strengthens, and shortens the working life of catalyst converter.
As all proposed the design proposal effectively improving flow uniformity in Chinese utility model patent CN200920143489, CN200920227898, CN201020536943.But these structures are fixing, different engine operating conditions cannot be applicable to.Under some operating mode, the decline of uniformity can be caused, and the significantly increase of exhaust back pressure, affect engine power performance.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, provides a kind of ternary catalyzing unit with current equalizer.
For solving above technical problem, the present invention adopts following technological scheme:
With the ternary catalyzing unit of current equalizer, comprise housing, catalyst converter carrier, liner, the gas-entered passageway be connected with described shell one end, the exhaust passage be connected with the described housing the other end, described ternary catalyzing unit also comprises catalyst converter flange, described catalyst converter flange is connected with described gas-entered passageway, current equalizer is provided with and described current equalizer is positioned at the suction port of described gas-entered passageway in described catalyst converter flange, described current equalizer comprises the electromagnetism loop device arranged with described catalyst converter flange coaxial, be connected with described electromagnetism loop device and electronic control unit for controlling the work of described electromagnetism loop device, arrange along described electromagnetism loop device circumference and controlled multiple blades of rotation by described electromagnetism loop device, each described blade is connected with described electromagnetism loop device by connecting rod.
Preferably, described connecting rod comprise can along the axis of self and self first connecting rod free to rotate, can along the axis of self and self second connecting rod free to rotate.
Particularly, described electromagnetism loop device comprises and to be fixedly installed in described catalyst converter flange and with the electromagnetism iron hoop of described catalyst converter flange coaxial, control to move axially along described catalyst converter flange and rotate in a circumferential direction by described electromagnetism iron hoop the armature ring arranged, described electromagnetism iron hoop, described armature ring are along described catalyst converter flange shaft to setting gradually, described first connecting rod is connected with described electromagnetism iron hoop, and described second connecting rod is connected with described armature ring.
Particularly, adiabatic ring is provided with between described electromagnetism loop device and described blade.
Particularly, described first connecting rod, described second connecting rod are all through described adiabatic ring, the chute of the corner dimension that the axis being provided with tail end for limiting described blade and described catalyst converter flange in the position of the corresponding described second connecting rod of described adiabatic ring is formed, described second connecting rod is along described slide, when described second connecting rod is positioned at described chute one end, described angle is minimum is 0 °; When described second connecting rod is positioned at the other end of described chute, described angle is 90 ° to the maximum.
Particularly, described angle is 30 ° ~ 60 °.
Preferably, described blade is provided with 4 ~ 8 and is uniformly distributed along described electromagnetism loop device circumference.
Due to the enforcement of technique scheme, the present invention compared with prior art tool has the following advantages:
Ternary catalyzing unit of the present invention controls the rotation angle of guide vane by electronic control unit (ECU), effective match control ternary catalyzing unit internal gas flow flow uniformity, uniformity coefficient is more than or equal to 0.91, on the other hand, can reduce structural change and the exhaust back pressure that brings increases, exhaust back pressure amplification is less than or equal to 1.5kPa.
Blade of the present invention can change in certain rotational angle range, mates the various instantaneous conditionss of motor completely, effectively improves transformation efficiency and the utilization ratio of ternary catalyzing unit, and ensure that motor exports maximum useful horsepower.The use of the rotating blade in ternary catalyzing unit of the present invention can improve ternary catalyzing unit spatial velocity, and spatial velocity is larger, and the time flowing through catalyst converter carrier part is longer, and catalytic reaction is more abundant.
Ternary catalyzing unit of the present invention compares existing ternary catalyzing unit longer service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of ternary catalyzing unit of the present invention;
Fig. 2 is the structural representation of current equalizer in ternary catalyzing unit of the present invention;
Fig. 3 is current equalizer longitudinal sectional view in ternary catalyzing unit of the present invention (showing a blade);
Fig. 4 is the schematic diagram of the blade rotation position of current equalizer in ternary catalyzing unit of the present invention;
In figure: 1, housing; 2, catalyst converter carrier; 3, liner; 4, gas-entered passageway; 5, exhaust passage; 6, catalyst converter flange; 7, current equalizer; 71, electromagnetism loop device; 711, electromagnetism iron hoop; 712, armature ring; 713, first connecting rod; 714, second connecting rod; 72, blade; 73, adiabatic ring; 74, electronic control unit; 75, chute.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.
The ternary catalyzing unit with current equalizer as shown in accompanying drawing 1 ~ 4, comprise housing 1, catalyst converter carrier 2, liner 3, the gas-entered passageway 4 be connected with housing 1 one end, the exhaust passage 5 be connected with housing 1 the other end, the catalyst converter flange 6 that is connected with gas-entered passageway 4, in catalyst converter flange 6, be provided with current equalizer 7 and current equalizer 7 is positioned at the suction port of gas-entered passageway 4.
Current equalizer 7 comprise coaxial with catalyst converter flange 6 arrange electromagnetism loop device 71, to be connected with electromagnetism loop device 71 and for controlling electronic control unit 74 that electromagnetism loop device 71 works, arranging along electromagnetism loop device 71 circumference and controlled multiple blades 72 of rotating by electromagnetism loop device 71, blade 72 can arrange 4 ~ 8 and be uniformly distributed along electromagnetism loop device 71 circumference, and each blade 72 is all connected with electromagnetism loop device 71 by connecting rod.The present embodiment Leaf 72 arranges 6.
As shown in Fig. 2 ~ 4, connecting rod comprise can along the axis of self and self first connecting rod 713 free to rotate, can along the axis of self and self second connecting rod 714 free to rotate.As shown in Figure 3, the position that first connecting rod 713, second connecting rod 714 are connected with blade 72 is respectively A point, B point, A point, B point on blade 72 along the axial distribution of catalyst converter flange 6.Electromagnetism loop device 71 comprises and is fixedly installed on electromagnetism iron hoop 711 in catalyst converter flange 6 and coaxial with catalyst converter flange 6, controls by electromagnetism iron hoop 711 the armature ring 712 arranged that moves axially along catalyst converter flange 6 and rotate in a circumferential direction, electromagnetism iron hoop 711, armature ring 712 axially set gradually along catalyst converter flange 6, first connecting rod 713 is connected with electromagnetism iron hoop 711, and second connecting rod 714 is connected with armature ring 712.
Adiabatic ring 73 is provided with between electromagnetism loop device 71 and blade 72, first connecting rod 713, second connecting rod 714 are all through adiabatic ring 73, the chute 75 of the corner dimension that tail end and catalyst converter flange 6 axis for limit blade 72 are formed is provided with in the position of the corresponding second connecting rod 714 of adiabatic ring 73, second connecting rod 714 slides along chute 75, when second connecting rod 714 is positioned at chute 75 one end, angle is minimum is 0 °; When second connecting rod 714 is positioned at chute 75 the other end, angle is 90 ° to the maximum, the size of angle and the rotation angle of corresponding blade 72.Actual when arranging, can change according to the motor of used different capacity the length offering chute, angle is changed within the scope of 0 ° ~ 90 °, and namely the rotation angle of blade 72 changes within the scope of 0 ° ~ 90 °.The optimum angle scope of the present embodiment is 30 ° ~ 60 °, and namely blade 72 is adjust between 30 ° ~ 60 ° at rotation angle.
Working principle of the present invention:
The adjustment of blade 72 rotation angle is mainly according to electronic control unit 74(ECU) in Engine Inlet Temperature, delivery temperature, the excess air ratio collected, calculate exhaust flow rate, again according to the corresponding angle change function data storing flow velocity in advance, obtain the angle value that current flow is corresponding.ECU exports DC current signal on electromagnetism iron hoop 711, electromagnetism iron hoop 711 produces different magnetic field according to different electric current, the gravitation that armature ring 712 is changed or repulsion, armature ring 712 axially produces displacement and rotation, mobile with the B point on moving vane 72, thus change the rotation angle of blade 72, exhaust gas is after rotating blade 72, formed and rotate flow-disturbing, enter gas-entered passageway 4, pass through catalyst converter carrier 2 equably, low speed, finally discharged by exhaust passage 5 and enter in other acoustic wave filter structure of vent systems.Above-mentioned angle change function pre-sets according to the principle of high flow uniformity and low exhaust back pressure, and can obtain according to the result of numerical simulation, object is the double optimization reaching engine power performance and ternary catalyzing unit flow uniformity.
Above to invention has been detailed description; its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; and the invention is not restricted to the embodiments described; the equivalence change that all Spirit Essences according to the present invention are done or modification, all should be encompassed within protection scope of the present invention.
Claims (7)
1. with the ternary catalyzing unit of current equalizer, comprise housing, catalyst converter carrier, liner, the gas-entered passageway be connected with described shell one end, the exhaust passage be connected with the described housing the other end, described ternary catalyzing unit also comprises catalyst converter flange, described catalyst converter flange is connected with described gas-entered passageway, current equalizer is provided with and described current equalizer is positioned at the suction port of described gas-entered passageway in described catalyst converter flange, it is characterized in that, described current equalizer comprises the electromagnetism loop device arranged with described catalyst converter flange coaxial, be connected with described electromagnetism loop device and electronic control unit for controlling the work of described electromagnetism loop device, arrange along described electromagnetism loop device circumference and controlled multiple blades of rotation by described electromagnetism loop device, each described blade is connected with described electromagnetism loop device by connecting rod.
2. the ternary catalyzing unit with current equalizer according to claim 1, is characterized in that, described connecting rod comprise can along the axis of self and self first connecting rod free to rotate, can along the axis of self and self second connecting rod free to rotate.
3. the ternary catalyzing unit with current equalizer according to claim 2, it is characterized in that, described electromagnetism loop device comprises and to be fixedly installed in described catalyst converter flange and with the electromagnetism iron hoop of described catalyst converter flange coaxial, control to move axially along described catalyst converter flange and rotate in a circumferential direction by described electromagnetism iron hoop the armature ring arranged, described electromagnetism iron hoop, described armature ring are along described catalyst converter flange shaft to setting gradually, described first connecting rod is connected with described electromagnetism iron hoop, and described second connecting rod is connected with described armature ring.
4. the ternary catalyzing unit with current equalizer according to claim 3, is characterized in that, is provided with adiabatic ring between described electromagnetism loop device and described blade.
5. the ternary catalyzing unit with current equalizer according to claim 4, it is characterized in that, described first connecting rod, described second connecting rod are all through described adiabatic ring, the chute of the corner dimension that the axis being provided with tail end for limiting described blade and described catalyst converter flange in the position of the corresponding described second connecting rod of described adiabatic ring is formed, described second connecting rod is along described slide, when described second connecting rod is positioned at described chute one end, described angle is minimum is 0 °; When described second connecting rod is positioned at the other end of described chute, described angle is 90 ° to the maximum.
6. the ternary catalyzing unit with current equalizer according to claim 5, is characterized in that, described angle is 30 ° ~ 60 °, and when described second connecting rod is positioned at described chute one end, described angle is 30 °; When described second connecting rod is positioned at the other end of described chute, described angle is 60 °.
7. the ternary catalyzing unit with current equalizer according to claim 1, is characterized in that, described blade is provided with 4 ~ 8 and is uniformly distributed along described electromagnetism loop device circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359431.2A CN103422954B (en) | 2013-08-16 | 2013-08-16 | Three-way catalyst with flow rectifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359431.2A CN103422954B (en) | 2013-08-16 | 2013-08-16 | Three-way catalyst with flow rectifier |
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| Publication Number | Publication Date |
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| CN103422954A CN103422954A (en) | 2013-12-04 |
| CN103422954B true CN103422954B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310359431.2A Active CN103422954B (en) | 2013-08-16 | 2013-08-16 | Three-way catalyst with flow rectifier |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626209A (en) * | 2015-12-30 | 2016-06-01 | 芜湖恒耀汽车零部件有限公司 | Flow adjusting structure |
| CN107420168A (en) * | 2017-09-26 | 2017-12-01 | 邓玉平 | A kind of three-way catalytic apparatus with steady flow velocity |
| CN112412583B (en) * | 2020-11-30 | 2022-07-08 | 重庆长安汽车股份有限公司 | Three way catalyst converter, engine exhaust assembly and car |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391353Y (en) * | 2009-03-25 | 2010-01-27 | 奇瑞汽车股份有限公司 | Novel three-way catalytic converter |
| JP2011106359A (en) * | 2009-11-18 | 2011-06-02 | Mitsubishi Fuso Truck & Bus Corp | Urea reduction type scr device for internal combustion engine |
| CN201610780U (en) * | 2009-11-23 | 2010-10-20 | 北京大正新智应用技术研究院 | Exhaust particle purifier for diesel engine vehicles |
| CN203403932U (en) * | 2013-08-16 | 2014-01-22 | 清华大学苏州汽车研究院（相城） | Three-way catalyst converter with flow equalizing device |
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