CN208718767U - The exhaust treatment system of diesel vehicle - Google Patents
The exhaust treatment system of diesel vehicle Download PDFInfo
- Publication number
- CN208718767U CN208718767U CN201820884465.1U CN201820884465U CN208718767U CN 208718767 U CN208718767 U CN 208718767U CN 201820884465 U CN201820884465 U CN 201820884465U CN 208718767 U CN208718767 U CN 208718767U
- Authority
- CN
- China
- Prior art keywords
- diesel vehicle
- grain catcher
- treatment system
- exhaust treatment
- mileage
- 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.)
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Links
- 230000003197 catalytic effect Effects 0.000 claims abstract description 21
- 230000003647 oxidation Effects 0.000 claims abstract description 21
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 21
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 13
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 12
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 3
- 239000005446 dissolved organic matter Substances 0.000 claims description 20
- 230000001172 regenerating effect Effects 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 9
- 239000000295 fuel oil Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 description 21
- 238000011069 regeneration method Methods 0.000 description 21
- 239000007789 gas Substances 0.000 description 7
- 239000013618 particulate matter Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
This application involves exhaust treatment system and the diesel vehicle including the system.The exhaust treatment system includes: the first processing units (200) arranged in the exhaust piping of diesel vehicle；With the second processing unit (300) for being arranged in the first processing units (200) downstream in the exhaust piping of diesel vehicle, the second processing unit (300) includes vanadium based selective catalytic reduction device, wherein, the first processing units (200) include shell (201), there are oxidation catalytic converter (220) and grain catcher (210) in the shell (201) interior integrated installation, the oxidation catalytic converter (220) is located at the upstream of the grain catcher (210).
Description
Technical field
This application involves the exhaust treatment systems of diesel vehicle.
Background technique
As diesel engine exhaust emission regulation demands are increasingly stringenter, exhaust gas recycles (EGR) technology, granule capturing
Device (DPF) and selective catalytic reduction (SCR) technology are simultaneously applied more and more in same exhaust treatment system.But
That exhaust emission regulations constantly upgrade, sometimes a diesel vehicle for meeting laws and regulations requirement several years ago after using many years,
Probably no longer meet laws and regulations requirement, needs to find a kind of method at this time to facilitate the exhaust-gas treatment of upgrading diesel vehicle
System.
Utility model content
In view of the above problems, the application, which is directed to a kind of facilitate, is transformed arranging for existing diesel engine exhaust processing system
It applies.
According to the one aspect of the application, a kind of exhaust treatment system of diesel vehicle is provided, comprising:
The first processing units arranged in the exhaust piping of diesel vehicle；With
It is arranged in the second processing unit in the first processing units downstream in the exhaust piping of diesel vehicle, described second
Processing unit includes vanadium based selective catalytic reduction device, wherein the first processing units include shell, in the shell
Integrated installation has oxidation catalytic converter and grain catcher, and the oxidation catalytic converter is located at the grain catcher
Upstream.
It optionally, further include electronic control unit, the electronic control unit is produced according to the mileage travelled of the diesel vehicle
The raw dissolved organic matter for executing the grain catcher is removed or the instruction of the regenerative operation of the grain catcher.
Optionally, it is equipped with fuel injector in the upstream of the first processing units, the fuel injector is single by the electronic control
Member sprays fuel oil into the exhaust piping of diesel vehicle, and to enable heating inside the grain catcher, the grain catcher is clear
Inlet temperature when except the dissolved organic matter is lower than the inlet temperature when grain catcher regenerative operation.
Optionally, after the diesel vehicle travels the first mileage, the electronic control unit generates the execution particle and catches
The instruction that the dissolved organic matter of storage is removed, and after the diesel vehicle travels the second mileage, the electronic control unit
The instruction for executing the regenerative operation of the grain catcher is generated, wherein first mileage is less than second mileage.
Optionally, after the diesel vehicle travels a scheduled mileage, the electronic control unit is first generated described in execution
The instruction that the dissolved organic matter of grain catcher is removed then generates the finger for executing the regenerative operation of the grain catcher
It enables.
According to further aspect of the application, a kind of diesel vehicle is additionally provided comprising according to exhaust-gas treatment system above-mentioned
System.
Using the above-mentioned technological means of the application, existing diesel vehicle can easily be transformed, constantly upgraded with satisfaction
Exhaust emission regulations requirement.In addition, the solubility before regenerating grain catcher in first burning-out grain catcher is organic
Object can eliminate possibility impaired due to vanadium based selective catalytic reduction device high temperature caused by the regeneration of grain catcher
Property, mileage travelled when executing grain catcher regeneration can also be extended.
Detailed description of the invention
The aforementioned and other side of the application will be more fully understood from aftermentioned detailed description and in conjunction with following attached drawing
Face.It should be pointed out that the ratio of each attached drawing is possible to different for clearly explained purpose, but this will not influence to this
The understanding of application.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the diesel engine exhaust processing system according to the application one embodiment；
Fig. 2 a is schematically illustrated in the flow chart of the first embodiment of the control process used in exhaust treatment system；
Fig. 2 b is control result figure corresponding with Fig. 2 a；
Fig. 3 a is schematically illustrated in the flow chart of the second embodiment of the control process used in exhaust treatment system；
Fig. 3 b is control result figure corresponding with Fig. 2 a.
Specific embodiment
In each attached drawing of the application, structure is identical or intimate feature is indicated by the same numbers.
Fig. 1 diagrammatically illustrates the diesel engine exhaust processing system according to the application one embodiment.At the exhaust gas
Reason system includes the first processing units 200 and second processing list that successively tandem is arranged in the exhaust piping of diesel engine
Member 300.The second processing unit 300 is vanadium based selective catalytic reduction device (V-SCR).First processing units 200 include integrated
Oxidation catalytic converter (DOC) 220 and grain catcher 210 together.In first processing units 200 and second processing list
It is disposed with exhaust-gas treatment liquid jetting device 400, such as aqueous solution of urea injection apparatus between member 300, being used for will such as urea water
The liquid for treating waste gas of solution is ejected into the upstream of vanadium based selective catalytic reduction device in exhaust piping, so as to engine exhaust
Selective catalytic reduction reaction is generated by vanadium based selective catalytic reduction device after mixing.
According to the application, first processing units 200 may include shell 201.The volume size of the shell 201 can manufacture
It is identical for the oxidation catalytic converter in any a exhaust treatment system with the prior art.In this way, at the first of the application
Reason unit 200 can be installed in existing exhaust treatment system, to replace the use of its oxidation catalytic converter, to facilitate needle
Laws and regulations requirement is updated and upgrades existing exhaust treatment system.Although the oxidation catalytic converter 220 in first processing units 200
Volume becomes smaller compared with prior art, but can be by increasing the bullion content inside oxidation catalytic converter 220 come really
It is up to standard to protect exhaust-gas treatment effect.
According to illustrative examples, the shell 201 of first processing units 200 may include two rooms, accommodate oxygen respectively
Change catalytic converter 220 and grain catcher 210, thus at oxidation catalytic converter 220, grain catcher 210 and second
Manage the successively tandem in exhaust piping of unit 300.For example, oxidation catalytic converter 220 and grain catcher 210 can be with any
Mode well known to those skilled in the art can be releasably mounted in shell 201, to facilitate later maintenance.It is contemplated that
A kind of mode be that oxidation catalytic converter 220 and grain catcher 210 are manufactured respectively as independent unit, via clamping
Or the mode being spirally connected is one another in series and then is clamped or is screwed in shell 201 again.
Temperature sensor 210a is disposed between oxidation catalytic converter 220 and grain catcher 210, for detection
The inlet temperature of grain trap 210.It is disposed with temperature sensor 300a in the inlet of the second processing unit 300, for detecting
The inlet temperature of vanadium based selective catalytic reduction device.In the second processing unit 300 or the inlet of oxidation catalytic converter 220
It can also be disposed with temperature sensor 220a, for detecting the inlet temperature of oxidation catalytic converter 220.
In addition, it will be apparent to those skilled in the art that being provided with fuel injector 500 in the upstream of the second processing unit 300.The oil spout
Device 500 can be according to needing to spray fuel oil into exhaust piping 100, so that high-temp waste gas enters oxidation catalysis after mixing with fuel oil
Converter 220 improves the treatment temperature of oxidation catalytic converter 220.Because oxidation catalytic converter 220 is located at grain catcher
210 upstream, and then the treatment temperature of grain catcher 210 can be improved.
Exhaust treatment system further includes electronic control unit (ECU) 600, with exhaust-gas treatment liquid jetting device 400, oil spout
Device 500, temperature sensor 220a, 210a are connected with 300a data, for controlling the operation of injection apparatus 400 and fuel injector 500
And temperature detection signal is received from temperature sensor 220a, 210a and 300a.
In general, vanadium based selective catalytic reduction device non-refractory, when temperature is more than 550 DEG C, the catalysis of vanadium based selective
Reduction apparatus will receive damage.The 70%~80% of the engine exhaust being collected into grain catcher 210 is had by solubility
Machine object is constituted.When reaching 500 DEG C~550 DEG C inside grain catcher 210, dissolved organic matter can be all burning-out.
The regeneration of grain catcher 210 can instruct fuel injector 500 to exhaust piping 100 by electronic control unit 600
Interior injection fuel oil, improves the treatment temperature of oxidation catalytic converter 220 and the inlet temperature for improving grain catcher 210 in turn is come
It realizes.In general, grain catcher 210 can pass through one according to the pressure difference between its entrance and outlet or according to diesel vehicle traveling
Scheduled regeneration mileage is as regenerated trigger condition.In the context of this application, the regeneration condition of grain catcher 210 is set
It is set to diesel vehicle traveling and passes through scheduled regeneration mileage, such as 800 kilometers.
In addition, eliminating the dissolved organic matter in grain catcher 210 is also to instruct oil spout by electronic control unit 600
Device 500 sprays fuel oil into exhaust piping 100 to execute.For example, eliminating the dissolved organic matter in grain catcher 210
When, compared with the regeneration of grain catcher 210, it is less that fuel injector 500 sprays amount of fuel into exhaust piping 100, thus particle
The inlet temperature T0 (as shown in Figure 2 b) of trap 210 only reaches 500 DEG C~550 DEG C and is lower than the regeneration of grain catcher 210
Temperature T1 (as shown in Figure 2 b).In this way, because of the entrance and first processing units of the second processing unit 300 in exhaust piping
There are certain distances between 200 outlet, when eliminating the dissolved organic matter in grain catcher 210, the second processing unit
300 entrance does not exceed 550 DEG C, it is ensured that vanadium based selective catalytic reduction device will not be damaged.
Electronic control unit 600 can be connected with the car running computer of diesel vehicle, and utilize the related data control of car running computer
The operation of exhaust treatment system processed.
Fig. 2 a is diagrammatically illustrated can be controlled the control process that exhaust treatment system operates by electronic control unit 600
First embodiment flow chart.Firstly, starting the operation for controlling exhaust treatment system as shown in Figure 1 in step S100.?
Step S200, electronic control unit 600 judge whether diesel vehicle has travelled a predetermined distance, such as 300 kilometers.Such as
The judging result of fruit step S200 is "No", then continues waiting for.If the judging result of step S200 is "Yes", in step
S300, electronic control unit 600 judge whether diesel vehicle has travelled scheduled regeneration mileage.If the judgement of step S300
As a result it is "No", then goes to step S400, eliminates the dissolved organic matter in grain catcher 210.If step S300's sentences
Disconnected result is "Yes", then goes to step S500, executes the regeneration of grain catcher 210.No matter step S400 or step S500,
After execution, if not reaching termination condition (step S600) is back to beginning (step S100).
Fig. 3 a is diagrammatically illustrated can be controlled the control process that exhaust treatment system operates by electronic control unit 600
Second embodiment flow chart.Firstly, starting the operation for controlling exhaust treatment system as shown in Figure 1 in step S100.?
Step S301, electronic control unit 600 judge whether diesel vehicle has travelled scheduled regeneration mileage.If step S301's
Judging result is "No", then continues waiting for.If the judging result of step S300 is "Yes", step S401 is gone to.In step
S401 eliminates the dissolved organic matter in grain catcher 210.And then, in step S501, grain catcher 210 is executed
Regeneration.Then, if not reaching termination condition (step S600) is back to beginning (step S100).If directly skipping step
If S401 directly executes step S501, because the particulate matter total amount trapped in grain catcher 210 is excessive, granule capturing is regenerated
Device 210 will lead to all particulates burning, discharges a large amount of heat and causes the inlet temperature of the second processing unit 300 to be more than
550 DEG C, damage vanadium based selective catalytic reduction device.On the contrary, reaching the scheduled of grain catcher 210 according to the application
After regenerating mileage, the elimination of the dissolved organic matter in grain catcher 210 is first carried out, at this time inside grain catcher 210
Reaction temperature does not exceed 550 DEG C, but can be first burning-out by a large amount of dissolved organic matter.It is caught in grain catcher 210
In the case that the particulate matter total amount of collection is reduced, then the regeneration of grain catcher 210 is executed, will not result in amount of heat
It discharges and causes the inlet temperature of the second processing unit 300 exceeded.
Fig. 2 b and 3b respectively illustrate control result figure corresponding with Fig. 2 a and 3a.Abscissa L represents diesel vehicle traveling
Mileage, left ordinate A represent particle object amount, and right ordinate T represents temperature, and the particulate matter that line 1 represents in grain catcher 210 is total
Amount, line 2 represent the amount of the dissolved organic matter in grain catcher 210, and line 3 represents the inlet temperature, i.e. of grain catcher 210
By temperature sensor 210a temperature value detected.
As shown in Figure 2 b, the diesel vehicle mileage travelled reached when eliminating the dissolved organic matter in grain catcher 210 is small
In the regeneration mileage travelled of grain catcher 210.In this way, reaching the dissolved organic matter eliminated in grain catcher 210 every time
Mileage travelled, heating is not higher than its regeneration temperature inside grain catcher 210, and dissolved organic matter is caught by burning-out and particle
The particulate matter total amount trapped in storage 210 also can be reduced accordingly.In this way it can be ensured that the particulate matter in grain catcher 210 is total
Amount is chronically at lower magnitude, correspondingly can further extend the regeneration mileage travelled of grain catcher 210.
As shown in Figure 3b, in the regeneration mileage travelled for reaching grain catcher 210, grain catcher 210 is first with low
, in this way can be first burning-out by the dissolved organic matter in grain catcher 210 in the temperature internal-combustion of regeneration temperature, cause
Particulate matter total amount in grain trap 210 reduces, and is then further reduced grain catcher again with regeneration temperature internal-combustion
Particulate matter total amount in 210.It is disposably released in this way, not having amount of heat, by the entrance of the second processing unit 300
Temperature exceeding standard.
It will be apparent to those skilled in the art that the above embodiments of the present application can engage one another while use.For example, scheming
In embodiment shown in 2a and 2b, then when executing the regeneration of grain catcher 210, can also first carry out as shown in Fig. 3 a and 3b can
The burning-out regeneration for executing grain catcher 210 again of soluble organism.
Although specific implementations of the present application are described in detail here, they are used for the purpose of the purpose explained and give
Out, and it is not considered that they are construed as limiting scope of the present application.In addition, it will be apparent to those skilled in the art that this explanation
Each embodiment described in book can be applied in combination each other.It is various under the premise of not departing from the application spirit and scope
Replacement, change and transformation can be contemplated out.
Claims (6)
1. a kind of exhaust treatment system of diesel vehicle, comprising:
The first processing units (200) arranged in the exhaust piping of diesel vehicle；With
The second processing unit (300) in the first processing units (200) downstream, institute are arranged in the exhaust piping of diesel vehicle
Stating the second processing unit (300) includes vanadium based selective catalytic reduction device (V-SCR), which is characterized in that first processing
Unit (200) includes shell (201), and in the shell (201), interior integrated installation has oxidation catalytic converter (220) and particle
Trap (210), the oxidation catalytic converter (220) are located at the upstream of the grain catcher (210).
2. the exhaust treatment system of diesel vehicle according to claim 1, which is characterized in that further include electronic control unit
(600), the electronic control unit generated according to the mileage travelled of the diesel vehicle execute the grain catcher (210) can
Soluble organism is removed or the instruction of the regenerative operation of the grain catcher (210).
3. the exhaust treatment system of diesel vehicle according to claim 2, which is characterized in that in the first processing units
(200) upstream is equipped with fuel injector (500), and the fuel injector (500) is given up by the electronic control unit (600) to diesel vehicle
Fuel oil is sprayed in feed channel, to enable heating inside the grain catcher (210), the grain catcher (210) is removing institute
Inlet temperature when stating dissolved organic matter is lower than the inlet temperature when grain catcher (210) regenerative operation.
4. the exhaust treatment system of diesel vehicle according to claim 2 or 3, which is characterized in that the electronic control unit
It generates and executes the finger that the dissolved organic matter of the grain catcher (210) is removed after the diesel vehicle travels the first mileage
It enables, and the electronic control unit generates and executes the grain catcher (210) after the diesel vehicle travels the second mileage
Regenerative operation instruction, wherein first mileage be less than second mileage.
5. the exhaust treatment system of diesel vehicle according to claim 2 or 3, which is characterized in that the electronic control unit
Generate the dissolved organic matter removing that the grain catcher (210) is first carried out after the diesel vehicle travels a scheduled mileage
And then execute the instruction of the regenerative operation of the grain catcher (210).
6. a kind of diesel vehicle, which is characterized in that including exhaust treatment system according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820884465.1U CN208718767U (en) | 2018-06-07 | 2018-06-07 | The exhaust treatment system of diesel vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820884465.1U CN208718767U (en) | 2018-06-07 | 2018-06-07 | The exhaust treatment system of diesel vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208718767U true CN208718767U (en) | 2019-04-09 |
Family
ID=65971351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820884465.1U Active CN208718767U (en) | 2018-06-07 | 2018-06-07 | The exhaust treatment system of diesel vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN208718767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324546A (en) * | 2020-10-30 | 2021-02-05 | 潍柴动力股份有限公司 | Fault detection method and fault detection equipment for engine SOF control system |
-
2018
- 2018-06-07 CN CN201820884465.1U patent/CN208718767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324546A (en) * | 2020-10-30 | 2021-02-05 | 潍柴动力股份有限公司 | Fault detection method and fault detection equipment for engine SOF control system |
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