CN206987918U - Meet the diesel engine post-processing system of in-use automotive NOx and PM emission control - Google Patents
Meet the diesel engine post-processing system of in-use automotive NOx and PM emission control Download PDFInfo
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- CN206987918U CN206987918U CN201720605734.1U CN201720605734U CN206987918U CN 206987918 U CN206987918 U CN 206987918U CN 201720605734 U CN201720605734 U CN 201720605734U CN 206987918 U CN206987918 U CN 206987918U
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- 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
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- 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
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- 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
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Abstract
The utility model discloses a kind of diesel engine post-processing system for meeting in-use automotive NOx and PM emission control, and the system includes SCR urea after-treatment system and the combustion-supporting CDPF systems of low temperature burners oil spout；The SCR urea after-treatment system includes compressed air regulating valve, air submeter pump, diesel engine outlet NOx sensor, diesel engine outlet exhaust temperature sensor, SCR catalytic converter inlet temperature sensor, SCR catalytic converter outlet temperature sensor, urea temperature sensor, air pressure probe, urea nozzle, SCR catalytic converter, SCR ECUs.The utility model meets to require with diesel emission limit value, realizes safe and reliable emission control under the various operating conditions of diesel engine, realize diesel exhaust aftertreatment PM and NOx emission Collaborative Control.
Description
Technical field
Diesel engine vent gas post-processing technology field is the utility model is related to, more particularly to one kind meets in-use automotive NOx and PM
The diesel engine post-processing system of emission control.
Background technology
In recent years, continuously there is haze phenomenon in each big city in China, seriously endangers health of people, influences China world shape
As.Nitrogen oxides (NOx) and particulate matter (PM) discharge in control diesel engine vent gas are to administer the key of urban air pollution.
High with the former row PM discharges of car diesel engine, operating condition is severe, and row's temperature is low, and particle can not be carried out by relying solely on DPF passive regeneration
Effective removing of thing.
Utility model content
The purpose of this utility model is by a kind of diesel engine after treatment system for meeting in-use automotive NOx and PM emission control
System, to solve the problems, such as that background section above is mentioned.
To use following technical scheme up to this purpose, the utility model：
A kind of diesel engine post-processing system for meeting in-use automotive NOx and PM emission control, it includes SCR urea post processing system
System and the combustion-supporting CDPF systems of low temperature burners oil spout；It is auxiliary that the SCR urea after-treatment system includes compressed air regulating valve, air
Help measuring pump, diesel engine outlet NOx sensor, diesel engine outlet exhaust temperature sensor, SCR catalytic converter inlet temperature sensing
Device, SCR catalytic converter outlet temperature sensor, urea temperature sensor, air pressure probe, urea nozzle, SCR catalysis
Converter, SCR ECUs；The compressed air regulating valve connects air submeter pump；The air submeter pump connects
Connect urea tank；Diesel engine outlet NOx sensor, diesel engine outlet exhaust temperature sensor, SCR catalytic converter inlet temperature pass
Sensor, SCR catalytic converter outlet temperature sensor, urea temperature sensor, the air pressure probe connection automatically controlled lists of SCR
Member；Described urea nozzle one end connects air submeter pump, other end connection SCR catalytic converter；The low temperature burners
The combustion-supporting CDPF systems of oil spout include compressed air air pump, low-voltage fuel oil pump, Fuel air mixing device, igniter plug, fuel nozzle,
Combustion chamber, wall-flow type CDPF catalytic converters, oxidisability DOC catalysts, DPF ECUs；The compressed air air pump
One end connects DPF ECUs, other end connection Fuel air mixing device；Low-voltage fuel oil pump connection Fuel air mixing device,
DPF ECUs；The Fuel air mixing device connects combustion chamber by fuel nozzle；The combustion chamber connection diesel engine, oxygen
The property changed DOC catalysts；The oxidisability DOC catalysts connect wall-flow type CDPF catalytic converters；The wall-flow type
CDPF catalytic converters are serially connected between blast pipe by flange.
Especially, NOx sensor is installed before the SCR catalytic converter；Installed after the SCR catalytic converter
NOx sensor.
Especially, the SCR urea injection temperation of the SCR urea after-treatment system is controlled more than 220 DEG C.
The utility model proposes the diesel engine post-processing system for meeting in-use automotive NOx and PM emission control meet with bavin
Oil machine discharge (NOx, PM, CO, HC) limit value requirement, using SCR and DPF technologies, realizes peace under the various operating conditions of diesel engine
Entirely, reliable emission control, diesel exhaust aftertreatment PM and NOx emission Collaborative Control are realized.The utility model need not
Heat management in substantial amounts of diesel engine machine is carried out to demarcate, aftertreatment thermal management demarcation independently, reduces in machine and the outer coupling of machine is demarcated,
Mounting arrangements are simple, easy to maintenance, are adapted to domestic various diesel engine in-use automotive repacking post processing demands.
Brief description of the drawings
Fig. 1 is the diesel engine after treatment system for meeting in-use automotive NOx and PM emission control that the utility model embodiment provides
System structure chart.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can come in fact in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open the more thorough and comprehensive of content understanding.It should be noted that when element is referred to as " being fixed on " another element, it can be straight
It is connected on another element or there may also be element placed in the middle.When an element is considered as " connection " another element,
It can be directly to another element or may be simultaneously present centering elements.Unless otherwise defined, it is used herein
All technologies and scientific terminology it is identical with belonging to the implication that those skilled in the art of the present utility model are generally understood that.
It is intended merely to describe the purpose of specific embodiment in term used in the description of the present utility model herein, is not purport
It is to limit the utility model.Term as used herein " and/or " include any of one or more related Listed Items
And all combinations.
Refer to shown in Fig. 1, Fig. 1 be the utility model embodiment provide meet in-use automotive NOx and PM emission control
Diesel engine post-processing system structure chart.
Meet that the diesel engine post-processing system of in-use automotive NOx and PM emission control specifically includes SCR urea in the present embodiment
After-treatment system and the combustion-supporting CDPF systems of low temperature burners oil spout；The SCR urea after-treatment system is adjusted including compressed air
Valve, air submeter pump 101, diesel engine outlet NOx sensor 102, diesel engine outlet exhaust temperature sensor, SCR catalyzed conversions
The inlet temperature sensor of device 104, the outlet temperature sensor of SCR catalytic converter 104, urea temperature sensor, air pressure pass
Sensor, urea nozzle 103, SCR catalytic converter 104, SCR ECUs 105；The compressed air regulating valve connection air is auxiliary
Help measuring pump 101；The air submeter pump 101 connects urea tank 106；Diesel engine outlet NOx sensor 102, bavin
Oil machine outlet exhaust temperature sensor, the inlet temperature sensor of SCR catalytic converter 104, the outlet temperature of SCR catalytic converter 104 pass
Sensor, urea temperature sensor, air pressure probe connection SCR ECUs 105；The one end of urea nozzle 103 connection
Air submeter pump 101, other end connection SCR catalytic converter 104；The combustion-supporting CDPF systems bag of low temperature burners oil spout
Include compressed air air pump 107, low-voltage fuel oil pump 108, Fuel air mixing device 109, igniter plug, fuel nozzle 110, combustion chamber
111st, wall-flow type CDPF catalytic converters 112, oxidisability DOC catalysts 113, DPF ECUs 114；The compression is empty
The one end of gas air pump 107 connection DPF ECUs 114, other end connection Fuel air mixing device 109；Low-voltage fuel oil pump 108 connects
BOR Bunker of Redelivery air mixer 109, DPF ECUs 114；The Fuel air mixing device 109 is connected by fuel nozzle 110 to be fired
Burn room 111；The combustion chamber 111 connects diesel engine 115, oxidisability DOC catalysts 113；The oxidisability DOC catalysis turns
Parallel operation 113 connects wall-flow type CDPF catalytic converters 112；The combustion-supporting CDPF systems of low temperature burners oil spout also include fuel tank
116th, exhaust temperature sensor 117, differential pressure pickup 118.The wall-flow type CDPF catalytic converters 112 are serially connected in exhaust by flange
Between pipe.
The combustion-supporting CDPF systems of the low temperature burners oil spout are lighted a fire using air-fuel mixture in this embodiment, realize wall stream
The control of the regeneration temperature of formula CDPF catalytic converters 112, when delivery temperature is higher than such as 300 degree of design temperature, pass through oxidisability
NO2 discharges make wall-flow type CDPF catalytic converters 112 realize passive regeneration caused by DOC catalysts 113.The air is auxiliary
Help measuring pump 101 to be used for the metering and premixing of urea and air, complete urea accurate measurement.The SCR ECUs 105 are used
Sensed in exporting NOx sensor 102, diesel engine outlet exhaust temperature sensor, the inlet temperature of SCR catalytic converter 104 to diesel engine
Device, the outlet temperature sensor of SCR catalytic converter 104, urea temperature sensor, the output signal of air pressure probe are carried out
Processing, urea consumption is calculated, drive urea nozzle 103, control NOx emission.
NOx sensor is installed before the SCR catalytic converter 104 to gather the NOx emission of diesel engine 115；Described
NOx sensor is installed after SCR catalytic converter 104, for calculating urea injecting quantity and NOx emission transformation efficiency, it is not necessary to right
115 original NOx emission of diesel engine carries out Accurate Calibration, is directly tested and is demarcated in actual vehicle.After the SCR urea
The SCR urea injection temperation of processing system is controlled more than 220 DEG C.Under the road condition of reality, sets target NOx conversion effect
Rate is more than more than 70%, by target NOx conversion efficiency and actual NOx conversion efficiency, calculates urea actual ejection amount.
During work, tail gas first passes through low temperature burners+DOC and CDPF catalyzed conversions after the exhaust outlet of diesel engine 115 comes out
Device, the control to CO, HC and PM discharge is realized, then by urea injection system and SCR catalytic converter 104.For current
Oxidation catalyst technology (DOC) and particulate filter technology are being used with the emission control with old vehicle, diesel engine after treatment
(CDPF) discharge capacity of reduction particulate matter (PM), hydrocarbon (HC) and carbon carbon monoxide (CO) is general technical side
Case.The requirement of in-use automotive emission control at present, HC and CO transformation efficiencies are more than 90%, and particulate matter PM reduces by 85%, NOx emission control
Reduce by 70%.According to the actual raw emissions of in-use automotive, Raw exhaust temperature, arrangement size, post-process carrier and
Catalyst parameters design, and among the vehicle operation of reality, carry out post-processing pressure drop and temperature signal test, so as to locate after monitoring
Manage running situation.Equally, in-use automotive needs to reduce NOx emission, and the SCR technology of use is more complicated, it is necessary to increase
Add urea injection system, more than 80% NOx emission can be reduced by technological transformation, technology repacking is carried out in actual vehicle
When, it is necessary to flexibly install and control.When carrying out in-use automotive repacking using SCR and DPF system, relatively it is adapted to big vehicle, needs
Want good reliability and low cost.
The utility model in in-use automotive technical foundation, using low temperature burners+DOC+CDPF+SCR systems reach NOx and
PM emission controls, this programme are few to diesel engine body Optimization Work amount, it is not necessary to discharge into row Bench calibration to diesel engine original, directly
Tested on vehicle.The technical solution of the utility model meets to want with diesel emission (NOx, PM, CO, HC) limit value
Ask, using SCR and DPF technologies, realize safe and reliable emission control under the various operating conditions of diesel engine, realize diesel oil
Machine exhaust aftertreatment PM and NOx emission Collaborative Control.The utility model need not carry out heat management mark in substantial amounts of diesel engine machine
Fixed, aftertreatment thermal management demarcation independently, reduces in machine and the outer coupling of machine is demarcated, mounting arrangements are simple, easy to maintenance, are adapted to state
Interior various diesel engine in-use automotive repacking post processing demands.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Technical principle of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With new principle, and the limitation to scope of protection of the utility model can not be construed in any way.Based on explanation herein,
Those skilled in the art, which would not require any inventive effort, can associate other embodiments of the present utility model,
These modes are fallen within the scope of protection of the utility model.
Claims (3)
1. a kind of diesel engine post-processing system for meeting in-use automotive NOx and PM emission control, it is characterised in that including SCR urea
After-treatment system and the combustion-supporting CDPF systems of low temperature burners oil spout；The SCR urea after-treatment system is adjusted including compressed air
Valve, air submeter pump, diesel engine outlet NOx sensor, diesel engine outlet exhaust temperature sensor, SCR catalytic converter entrance
Temperature sensor, SCR catalytic converter outlet temperature sensor, urea temperature sensor, air pressure probe, urea spray
Mouth, SCR catalytic converter, SCR ECUs；The compressed air regulating valve connects air submeter pump；The air is auxiliary
Measuring pump is helped to connect urea tank；Diesel engine outlet NOx sensor, diesel engine outlet exhaust temperature sensor, SCR catalytic converter
Inlet temperature sensor, SCR catalytic converter outlet temperature sensor, urea temperature sensor, air pressure probe connection
SCR ECUs；Described urea nozzle one end connects air submeter pump, other end connection SCR catalytic converter；It is described low
The warm combustion-supporting CDPF systems of burner oil spout include compressed air air pump, low-voltage fuel oil pump, Fuel air mixing device, igniter plug,
Fuel nozzle, combustion chamber, wall-flow type CDPF catalytic converters, oxidisability DOC catalysts, DPF ECUs；The compression
Air air pump one end connects DPF ECUs, other end connection Fuel air mixing device；Low-voltage fuel oil pump connects fuel-air
Blender, DPF ECUs；The Fuel air mixing device connects combustion chamber by fuel nozzle；The combustion chamber connects bavin
Oil machine, oxidisability DOC catalysts；The oxidisability DOC catalysts connect wall-flow type CDPF catalytic converters；It is described
Wall-flow type CDPF catalytic converters are serially connected between blast pipe by flange.
2. the diesel engine post-processing system according to claim 1 for meeting in-use automotive NOx and PM emission control, its feature exist
In installing NOx sensor before the SCR catalytic converter；NOx sensor is installed after the SCR catalytic converter.
3. according to the diesel engine after treatment system for meeting in-use automotive NOx and PM emission control described in any one of claim 1 or 2
System, it is characterised in that the SCR urea injection temperation of the SCR urea after-treatment system is controlled more than 220 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720605734.1U CN206987918U (en) | 2017-05-26 | 2017-05-26 | Meet the diesel engine post-processing system of in-use automotive NOx and PM emission control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720605734.1U CN206987918U (en) | 2017-05-26 | 2017-05-26 | Meet the diesel engine post-processing system of in-use automotive NOx and PM emission control |
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| Publication Number | Publication Date |
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| CN206987918U true CN206987918U (en) | 2018-02-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988839A (en) * | 2017-05-26 | 2017-07-28 | 凯龙高科技股份有限公司 | Meet the diesel engine post-processing system of in-use automotive NOx and PM emission control |
| CN108798843A (en) * | 2018-05-31 | 2018-11-13 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle exhaust system |
| CN110523735A (en) * | 2018-08-31 | 2019-12-03 | 海南汉地阳光石油化工有限公司 | A kind of air cleaning unit improving high-voltage motor security performance |
| CN111350574A (en) * | 2018-12-23 | 2020-06-30 | 周浩明 | Automobile state 6 discharge post-treatment system |
| CN113374564A (en) * | 2021-07-30 | 2021-09-10 | 天津大学 | Automobile exhaust after-treatment method |
| CN115013129A (en) * | 2022-06-16 | 2022-09-06 | 江铃汽车股份有限公司 | Control strategy for preventing diesel engine exhaust emission PN from exceeding standard |
-
2017
- 2017-05-26 CN CN201720605734.1U patent/CN206987918U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988839A (en) * | 2017-05-26 | 2017-07-28 | 凯龙高科技股份有限公司 | Meet the diesel engine post-processing system of in-use automotive NOx and PM emission control |
| CN108798843A (en) * | 2018-05-31 | 2018-11-13 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle exhaust system |
| CN110523735A (en) * | 2018-08-31 | 2019-12-03 | 海南汉地阳光石油化工有限公司 | A kind of air cleaning unit improving high-voltage motor security performance |
| CN111350574A (en) * | 2018-12-23 | 2020-06-30 | 周浩明 | Automobile state 6 discharge post-treatment system |
| CN113374564A (en) * | 2021-07-30 | 2021-09-10 | 天津大学 | Automobile exhaust after-treatment method |
| CN115013129A (en) * | 2022-06-16 | 2022-09-06 | 江铃汽车股份有限公司 | Control strategy for preventing diesel engine exhaust emission PN from exceeding standard |
| CN115013129B (en) * | 2022-06-16 | 2023-08-08 | 江铃汽车股份有限公司 | Control strategy for preventing PN (Positive and negative) emissions of tail gas of diesel engine from exceeding standard |
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