CN207554162U - A kind of vehicle maintenance service system - Google Patents
A kind of vehicle maintenance service system Download PDFInfo
- Publication number
- CN207554162U CN207554162U CN201721433690.5U CN201721433690U CN207554162U CN 207554162 U CN207554162 U CN 207554162U CN 201721433690 U CN201721433690 U CN 201721433690U CN 207554162 U CN207554162 U CN 207554162U
- Authority
- CN
- China
- Prior art keywords
- communication apparatus
- temperature
- output terminal
- control device
- maintenance service
- 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.)
- Active
Links
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
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model provides a kind of vehicle maintenance service system, in the utility model, when the temperature of the gas of the output terminal of tail gas filter is in default operating mode less than preset temperature threshold and/or engine, control device controls the conducting of the second communication apparatus, and then the gas of the output terminal of tail gas filter will be flowed out by the second communication apparatus, without going past SCR system, and then when avoiding relatively low exhaust by SCR system, the problem of partial heat inside SCR system can also be taken away, shortens the time of urea stop-spraying.
Description
Technical field
The utility model is related to automobile exhaust process field, more specifically to a kind of vehicle maintenance service system.
Background technology
It is also higher and higher to the purification requirement of vehicle exhaust as emission regulation demands are increasingly strict.Selective catalysis is also
Former technology SCR system is as one of major technique for reducing NOx, and only the inlet temperature of SCR system is higher than the temperature threshold of setting
During value, urea injection can be just carried out, is finally reached the purpose for reducing NOx.
But when idling, towing astern or underload are when operating modes, the inlet temperature of SCR system may be less than temperature threshold
Value, at this point, urea stop injection, and the relatively low exhaust pass through SCR system when, can also take away the part inside SCR system
Heat, so that the time that SCR system internal temperature is restored to the temperature threshold of setting is longer, so that urea stop-spraying
Time is longer.
Utility model content
To solve when idling, towing astern or underload are when operating modes so that this reality of the problem of time of urea stop-spraying is longer
With a kind of vehicle maintenance service system of novel offer.
To achieve the above object, the utility model provides following technical solution：
A kind of vehicle maintenance service system, including control device, tail gas filter, the first communication apparatus, the second connection
Device and SCR technology SCR system；
Wherein, the output terminal of the tail gas filter connects respectively with one end of first communication apparatus, described second
One end connection of exchange device；The other end of first communication apparatus is connect with the input terminal of the SCR system, the SCR systems
The output terminal of system is connect with the other end of second communication apparatus；The control device respectively with first communication apparatus,
The second communication apparatus connection；
When the temperature of the gas of the output terminal of the tail gas filter is less than at preset temperature threshold and/or engine
When default operating mode, the control device controls the second communication apparatus conducting.
Preferably, the default operating mode includes idling operation, towing astern operating mode and/or running on the lower load.
Preferably, when the temperature of the gas of the output terminal of the tail gas filter is less than preset temperature threshold, institute
It states control device and controls the second communication apparatus conducting, including：
Whether the control device judges the temperature of the gas of the output terminal of the tail gas filter less than the temperature
Threshold value；Wherein, the temperature of the gas is detected based on temperature sensor；
When the control device judges that the temperature is less than the temperature threshold, control instruction is sent out to described second
Communication apparatus, so that second communication apparatus is connected.
Preferably, the tail gas filter includes oxidation catalytic converter and diesel particulate filter；
Wherein, the output terminal of the oxidation catalytic converter is connect with the input terminal of the diesel particulate filter, described
The output terminal of diesel particulate filter connects respectively with one end of one end of first communication apparatus, second communication apparatus
It connects.
Preferably, the control device is electronic control unit ECU.
Preferably, the first communication apparatus includes control valve.
Preferably, the second communication apparatus includes bypass valve.
It can be seen from the above technical proposal that the utility model provides one kind
The utility model provides a kind of vehicle maintenance service system, defeated when tail gas filter in the utility model
When the temperature of the gas of outlet is in default operating mode less than preset temperature threshold and/or engine, control device control second
Communication apparatus is connected, and then the gas of the output terminal of tail gas filter will be flowed out by the second communication apparatus, without going past
SCR system, so avoid relatively low exhaust by SCR system when, can also take away asking for the partial heat inside SCR system
Topic shortens the time of urea stop-spraying.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of part-structure schematic diagram of vehicle maintenance service system provided by the utility model；
Fig. 2 is a kind of structure diagram of vehicle maintenance service system provided by the utility model；
Fig. 3 is a kind of method flow diagram of vehicle maintenance service method provided by the utility model；
Fig. 4 is the variation diagram of the aperture of by-passing valve provided by the utility model；
Fig. 5 is a kind of schematic diagram of a scenario of vehicle exhaust flowing provided by the utility model.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
The utility model embodiment provides a kind of vehicle maintenance service system, with reference to Fig. 2, including control device 113, tail
Gas filter device 104, the first communication apparatus 102, the second communication apparatus 103 and SCR technology SCR system 101；
Wherein, the output terminal of tail gas filter 104 respectively with one end of the first communication apparatus 102, the second communication apparatus
103 one end connection；The other end of first communication apparatus 102 is connect with the input terminal of SCR system 101, SCR system 101 it is defeated
Outlet is connect with the other end of the second communication apparatus 103；Control device 113 connects respectively with the first communication apparatus 102, second
Device 103 connects；
When the temperature of the gas of the output terminal of tail gas filter 104 is less than at preset temperature threshold and/or engine
When default operating mode, control device 113 controls the second communication apparatus 103 to be connected.
Wherein, the first communication apparatus includes control valve, and the second communication apparatus includes bypass valve, and control device 113 is electronics
Control unit ECU.
Tail gas filter 104 includes oxidation catalytic converter DOC 1042 and diesel particulate filter DPF 1041；Tail
What gas filter device 104 was handled is the tail gas of engine generation.
Wherein, the output terminal of oxidation catalytic converter DOC 1042 and the input terminal of diesel particulate filter DPF 1041 connect
Connect, the output terminal of diesel particulate filter DPF 1041 respectively with one end of the first communication apparatus 102, the second communication apparatus 103
One end connection.
Specifically, DOC (Diesel Oxidation Catalyst), oxidation catalytic converter, after a kind of diesel engine truck exhaust
Treatment technology mainly reduces PM discharges by the oxidation reaction of catalyst except the volatilizable organic matter in degranulation.
DPF (Diesel Particulate Filter), diesel particulate filter, in diesel engine truck exhaust system,
By filtering the device to reduce particulate matter (PM) in exhaust.
SCR (Selective Catalytic Reduction), selective catalytic reduction, after the one kind for reducing NOx emission
Processing unit.
It should be noted that the control device 113 in the utility model can be according to the temperature for the gas for entering SCR system
And the operating status of engine, the opening and closing state of the second communication apparatus 103 of control.
In Fig. 2 of the present embodiment, the course of work of each device is：
Tail gas filter 104 handles particulate matter and volatilizable organic matter in the tail gas of engine generation, by processing
Gas afterwards enters SCR system, reduces the NOx in gas.When the temperature of the gas of 104 output terminal of tail gas filter is less than in advance
If temperature threshold and/or engine when being in default operating mode, control device 113 controls the second communication apparatus 103 to be connected.Into
And the gas of 104 output terminal of tail gas filter is flowed by the second communication apparatus 103 in air.In addition, control device 113
The aperture of the first communication apparatus 102 can be controlled so that partial air flows through SCR system.
It should be noted that Fig. 1 is the component part on the left side in Fig. 2, specific explanations illustrate to please refer to explaining for Fig. 2
It is bright.
Optionally, it on the basis of the present embodiment, is preset when the temperature of the gas of the output terminal of tail gas filter is less than
Temperature threshold when, control device control the second communication apparatus conducting, including：
Whether control device judges the temperature of the gas of the output terminal of tail gas filter less than temperature threshold；Wherein, gas
The temperature of body is detected based on temperature sensor；
When control device judges that temperature is less than temperature threshold, control instruction is sent out to the second communication apparatus, so that the
Two communication apparatus are connected.
Specifically, the temperature of gas is obtained by temperature sensor measurement, and obtained temperature signal transmission will be measured
To control device, and then the temperature and preset temperature threshold can be compared by control device, judge whether to need to control
Second communication apparatus is connected.
In the present embodiment, when the output terminal of tail gas filter gas temperature less than preset temperature threshold and/or
When engine is in default operating mode, control device controls the second communication apparatus to be connected, and then the output terminal of tail gas filter
Gas will be flowed out by the second communication apparatus, without going past SCR system, and then avoid relatively low exhaust by SCR system
When, the problem of also taking away the partial heat inside SCR system, shortens time of urea stop-spraying.
Optionally, it on the basis of the embodiment of above-mentioned vehicle maintenance service system, presets operating mode and includes idling operation, falls
Drag operating mode and/or running on the lower load.
Wherein, the idling of automobile refers to a kind of working condition.Referred to as idling during the race of engine, i.e. automobile gears are sky
Gear.Rotating speed during engine idling is referred to as idling speed.Idling speed can be high to adjust its by adjusting air door size etc.
It is low.Idling is engine " work shifts where laborers do not exerting themselves ".
Towing astern is exactly that diesel engine is idle, that is, fuel injector not oil spout, is not burnt.By external impetus (such as electric power
Dynamometer machine) driving diesel engine is made to get into smooth.
The definition of engine load for engine under a certain rotating speed, under engine was sent out at that time power and same rotating speed
The ratio between maximum power that may be sent out, is expressed as a percentage.When the load value of engine is smaller, illustrate that engine is in low
Load condition.
When engine is in idling, towing astern and/or running on the lower load, exhaust gas temperature is relatively low after DPF, and urea may be not achieved
Injection conditions in order to ensure that SCR internal temperatures do not take away heat again by flowing low temperature waste gas, is at this time made the by-passing valve of SCR
It opens, after exhaust gas is made to be not passed through SCR and is exhausted directly to SCR.Wherein, the aperture technical staff of by-passing valve can according to specific operating mode into
Row control.
Under engine accidental conditions, by the way that control valve or bypass valve opening control is controlled to flow through SCR internal gas
Flow can rationally control exhaust back pressure.Wherein, exhaust back pressure refers to the resistance pressure of engine exhaust.
In the present embodiment, by increasing by-passing valve, in delivery temperatures such as idling, low speed, towing astern and/or underloads less than urine
During the operating mode of plain eject request temperature threshold, by by-passing valve by SCR bypass fall, make exhaust gas completely or partially without SCR and
After being immediately directed against SCR, low temperature exhaust gas is avoided to take away SCR internal heats, played to SCR temperature insulation effect, shorten urea spray
Between stopping time.Exhaust back pressure can flexibly be controlled using this programme simultaneously, realize the double action that heat preservation is flexibly controlled with back pressure.
Optionally, on the basis of the embodiment of above-mentioned vehicle maintenance service system, another embodiment of the utility model
A kind of vehicle maintenance service method is provided, applied to control device, with reference to Fig. 3, vehicle maintenance service method can include：
S11, obtain tail gas filter output terminal gas temperature and engine operation condition；
Wherein, the temperature of the gas of the output terminal of tail gas filter can be obtained by temperature sensor measurement, be started
Machine operating condition can be analyzed to obtain according to the operating parameter of engine.
S12, when temperature is default operating mode less than preset temperature threshold and/or engine operation condition, control second
Communication apparatus is connected.
Wherein, the second conducting device is the by-passing valve in above-described embodiment, and the second conducting device can be pneumatic control, electricity
Dynamic control or Mechanical course, are not particularly limited the control mode of by-passing valve.
Optionally, it on the basis of the present embodiment, presets operating mode and includes idling operation, towing astern operating mode and/or underload work
Condition.
Optionally, it on the basis of the present embodiment, after control device controls the conducting of the second communication apparatus, further includes：
According to temperature and the difference of temperature threshold, the aperture of the second conducting device and the aperture of the first conducting device are controlled.
Specifically, it is idle to judge that temperature is less than preset temperature threshold and/or engine operation condition when control device
Fast operating mode, towing astern operating mode and/or underload are when default operating mode, control the second communication apparatus conducting.
Such as, when the engine is running, the signal that ECU is acquired according to temperature sensor before SCR, i.e., according to tail gas filter
Output terminal gas temperature, judge whether the control for needing to carry out by-passing valve.If temperature is met the requirements, do not need into
The control of row by-passing valve, then by-passing valve be closed；When temperature is less than temperature threshold, the clearance of urea injection is not achieved
Condition then at this time opens by-passing valve, and gas is all flowed through after bypass line is discharged to SCR casees.
At this point it is possible to control the aperture of the second conducting device, it could be provided as standard-sized sheet, partially open.Such as, when the temperature with
When temperature threshold is not much different, can by the aperture of the second conducting device set it is less, even if most gas enters SCR
System will not have large effect to the temperature in SCR system.When the temperature differs larger with temperature threshold, due to temperature
Difference is larger, if most gas enters SCR systems, can have large effect to the temperature in SCR system, can incite somebody to action at this time
The aperture of second conducting device is set as standard-sized sheet or major part is opened.
Wherein, the setting of the aperture of bypass valve is referred to Fig. 4.In Fig. 4, using the temperature of gas and exhaust back pressure as judgement
For standard, just start the temperature of gas of tail gas filter higher than temperature threshold, at this point, bypass valve is closed,
It has crossed after a period of time, the temperature of gas reduces, and less than temperature threshold, by-passing valve is opened completely at this time, later with temperature
Variation, the aperture of by-passing valve is constantly changed, and is specifically referred to Fig. 4.
Other than the aperture of the second conducting device can be set, the aperture of the first conducting device can also be set.
With reference to Fig. 1, with the temperature of temperature before SCR inlet, the i.e. gas of the output terminal of tail gas filter, mesh in order to control
Mark controls bypath valve aperture.When by-passing valve 103 is shown in a fully open operation, control valve 102 can flexibly control exhaust to flow
Direction, portion gas can pass through SCR system 101,；When by-passing valve 103 is in full off state, control valve 102 can be flexible
Aperture is controlled, rationally controls exhaust back pressure.Control valve 102 and the mutually control exhaust gas flow of by-passing valve 103.103 standard-sized sheet of by-passing valve
When gas flow graph be referred to Fig. 1.Gas flow graph when by-passing valve 103 is fully closed is referred to Fig. 5.In Fig. 5, gas
All by the branch of control valve 102, the air mass flow of the branch of by-passing valve 103 is zero.
In the present embodiment, when the output terminal of tail gas filter gas temperature less than preset temperature threshold and/or
When engine is in default operating mode, control device controls the second communication apparatus to be connected, and then the output terminal of tail gas filter
Gas will be flowed out by the second communication apparatus, without going past SCR system, and then avoid relatively low exhaust by SCR system
When, the problem of also taking away the partial heat inside SCR system, shortens the time of urea stop-spraying, better meets emission request.
Optionally, on the basis of the embodiment of any of the above-described vehicle maintenance service method, when engine operation condition is
During nominal situation, further include：
Control the aperture of the second conducting device and the aperture of the first conducting device.
Specifically, when engine operation condition is nominal situation, i.e., there is no idling operation, towing astern operating mode and underloads
Etc. operating modes, at this point it is possible to state aperture and the first conducting of the second conducting device according to the demand of exhaust back pressure come rational control
The aperture of device controls the aperture of control valve and by-passing valve.
In the present embodiment, in engine work, second can be reasonably controlled to lead according to the requirement of exhaust back pressure
The aperture of the aperture of exchange device and the first conducting device, and then improve the dynamic property of engine.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide range consistent with features of novelty.
Claims (7)
1. a kind of vehicle maintenance service system, which is characterized in that including control device, tail gas filter, the first communication apparatus,
Second communication apparatus and SCR technology SCR system；
Wherein, the output terminal of the tail gas filter connects dress with one end of first communication apparatus, described second respectively
One end connection put；The other end of first communication apparatus is connect with the input terminal of the SCR system, the SCR system
Output terminal is connect with the other end of second communication apparatus；The control device respectively with first communication apparatus, described
Second communication apparatus connects；
When the temperature of the gas of the output terminal of the tail gas filter is in pre- less than preset temperature threshold and/or engine
If during operating mode, the control device controls the second communication apparatus conducting.
2. vehicle maintenance service system according to claim 1, which is characterized in that the default operating mode includes idling work
Condition, towing astern operating mode and/or running on the lower load.
3. vehicle maintenance service system according to claim 1, which is characterized in that when the output of the tail gas filter
When the temperature of the gas at end is less than preset temperature threshold, the control device controls the second communication apparatus conducting, including：
Whether the control device judges the temperature of the gas of the output terminal of the tail gas filter less than the temperature threshold；
Wherein, the temperature of the gas is detected based on temperature sensor；
When the control device judges that the temperature is less than the temperature threshold, control instruction is sent out to the described second connection
Device, so that second communication apparatus is connected.
4. vehicle maintenance service system according to claim 1, which is characterized in that the tail gas filter includes oxidation
Catalyst and diesel particulate filter；
Wherein, the output terminal of the oxidation catalytic converter is connect with the input terminal of the diesel particulate filter, the diesel oil
The one end of the output terminal of particulate filter respectively with one end of first communication apparatus, second communication apparatus is connect.
5. vehicle maintenance service system according to claim 1, which is characterized in that the control device is single for electronic control
First ECU.
6. vehicle maintenance service system according to claim 1, which is characterized in that the first communication apparatus includes control valve.
7. vehicle maintenance service system according to claim 1, which is characterized in that the second communication apparatus includes bypass valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721433690.5U CN207554162U (en) | 2017-10-31 | 2017-10-31 | A kind of vehicle maintenance service system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721433690.5U CN207554162U (en) | 2017-10-31 | 2017-10-31 | A kind of vehicle maintenance service system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554162U true CN207554162U (en) | 2018-06-29 |
Family
ID=62681784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721433690.5U Active CN207554162U (en) | 2017-10-31 | 2017-10-31 | A kind of vehicle maintenance service system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554162U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559075A (en) * | 2017-10-31 | 2018-01-09 | 潍柴动力股份有限公司 | A kind of vehicle maintenance service system and method |
| CN108150296A (en) * | 2017-12-27 | 2018-06-12 | 潍柴动力股份有限公司 | Binary channels SCR catalytic convention designs and its control method |
| CN109374835A (en) * | 2018-11-19 | 2019-02-22 | 合肥市极点科技有限公司 | A kind of Design of Vehicle Tail Gas Analyzer |
-
2017
- 2017-10-31 CN CN201721433690.5U patent/CN207554162U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559075A (en) * | 2017-10-31 | 2018-01-09 | 潍柴动力股份有限公司 | A kind of vehicle maintenance service system and method |
| CN108150296A (en) * | 2017-12-27 | 2018-06-12 | 潍柴动力股份有限公司 | Binary channels SCR catalytic convention designs and its control method |
| CN109374835A (en) * | 2018-11-19 | 2019-02-22 | 合肥市极点科技有限公司 | A kind of Design of Vehicle Tail Gas Analyzer |
| CN109374835B (en) * | 2018-11-19 | 2021-06-04 | 合肥市极点科技有限公司 | Motor vehicle tail gas detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3475543B1 (en) | Method and device for the exhaust gas aftertreatment of an internal combustion engine | |
| EP2326809B1 (en) | Method for operating an exhaust emission control system having a scr-catalyst and an upstream oxidation catalyst exhaust emission control component | |
| EP3660287B1 (en) | Exhaust gas aftertreatment system and method for treating the waste gas of a combustion engine | |
| CN106948912B (en) | Diesel engine post-treatment exhaust heat management method and device | |
| EP2417335B1 (en) | Metering system for injecting a reducing agent into the exhaust gas flow of an internal combustion engine | |
| CN104718356A (en) | Method and apparatus for controlling an exhaust gas after-treatment system | |
| EP2581568B1 (en) | Exhaust gas purification system | |
| CN207554162U (en) | A kind of vehicle maintenance service system | |
| DE102010035621B4 (en) | Apparatus, system, and method for diesel exhaust fluid warming control | |
| US20130152550A1 (en) | Method and system for diesel particle filter regeneration | |
| CN106401704A (en) | Sulfur poisoning eliminating device for SCR (selective catalytic reduction) catalyst of diesel engine and using method of sulfur poisoning eliminating device | |
| CN206175032U (en) | Sulfur poisoning eliminating device for SCR (selective catalytic reduction) catalyst of diesel engine | |
| CN105736161B (en) | A kind of pressure booster with variable cross section nozzle ring method of actuator control | |
| US20240026808A1 (en) | Adjusting thermal management mode entry and exit temperature thresholds based on aftertreatment system aging | |
| WO2010034402A1 (en) | Method for operating an exhaust emission control system having an scr-catalyst | |
| EP3167171B1 (en) | Method for operating a reducing agent dosing of an scr catalyst system, and corresponding scr catalyst system | |
| CN107559075A (en) | A kind of vehicle maintenance service system and method | |
| CN113924410B (en) | Aftertreatment system, control method for aftertreatment system, and vehicle | |
| CN210003364U (en) | kinds of post-processing system | |
| EP2612001B1 (en) | Method and system for exhaust cleaning | |
| CN215890140U (en) | Post-processing system for meeting ultralow emission of heavy-duty vehicle | |
| EP2894310A1 (en) | Additive supply device for internal combustion engines | |
| CN112219018B (en) | Method and system for determining a reference value relating to the amount of exhaust emissions | |
| EP3051088A1 (en) | Additive supply device | |
| CN113027577B (en) | Engine exhaust device and engine exhaust method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |