CN107989675A - Integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics - Google Patents
Integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics Download PDFInfo
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- CN107989675A CN107989675A CN201711261232.2A CN201711261232A CN107989675A CN 107989675 A CN107989675 A CN 107989675A CN 201711261232 A CN201711261232 A CN 201711261232A CN 107989675 A CN107989675 A CN 107989675A
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- Prior art keywords
- dpf
- scr
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- temperature sensor
- nitrogen oxide
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
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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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention provides a kind of integrated form DOC DPF SCR assembly apparatus for After-treatment technics,Including the DOC oxidation catalyzers set gradually according to the flow direction of exhaust gas,DPF diesel particulate filters,Urea mixer and SCR catalytic converter,DOC oxidation catalyzers both ends are respectively equipped with the first exhaust temperature sensor and the second exhaust temperature sensor,The inlet end of DOC oxidation catalyzers is equipped with the first nitrogen oxide sensor,The rear end of DPF diesel particulate filters is equipped with the 3rd exhaust temperature sensor,DPF diesel particulate filters into,Exhaust end is equipped with differential pressure pickup,Urea nozzle is integrated with urea mixer,Urea nozzle fender bracket is equipped with around urea nozzle,The rear end of SCR catalytic converter is equipped with the 4th exhaust temperature sensor,The outlet side of SCR catalysis reductors is equipped with the second nitrogen oxide sensor,The side of SCR catalysis reductors is equipped with nitrogen oxide sensor fender bracket,The control unit of nitrogen oxide sensor is bolted on the nitrogen oxide sensor fender bracket.The present apparatus can save the arrangement space of state VI post processings, improve efficiency of assembling, ensure conformity of production.
Description
Technical field
The present invention relates to diesel engine post-processing technology field, more particularly to a kind of for After-treatment technics
Integrated form DOC-DPF-SCR assembly apparatus.
Background technology
In the prior art, DOC-DPF-SCR devices are only integrated with exhaust temperature sensor seat, nitrogen oxide sensor seat, urea nozzle
Seat etc., its corresponding sensor and its annex, harness etc. need main engine plants voluntarily to install fixation, and main engine plants are easy to out when assembling
The problem of now filling by mistake, meeting the after-treatment system of state's VI discharge standards at present includes 4 exhaust temperature sensors, is respectively DOC (oxidations
Catalyst converter) before exhaust temperature sensor, DPF (diesel particulate filter) exhaust temperature sensor, SCR (selections afterwards after exhaust temperature sensor, DOC
Property catalysis reduction) exhaust temperature sensor afterwards, once exhaust temperature sensor order wrong, can cause DPF can not regular regeneration, urea can not
Normal injection or urea cross the phenomenon of spray, so as to the problems such as urea crystals, discharge is exceeded occur.Each sensor and execution at the same time
The harness arrangement of device is chaotic, the problem of baking of high temperature failure easily occurs.In addition, state's VI after-treatment systems cause arrangement to be stranded
Difficult and challenge.
The content of the invention
The purpose of the present invention is at least solving one of drawbacks described above and deficiency, which is to be achieved through the following technical solutions
's.
The present invention provides a kind of integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics, including basis
DOC oxidation catalyzers, DPF diesel particulate filters, urea mixer and the SCR catalysis that the flow direction of exhaust gas is set gradually turn
Change device, waste gas inlet is arranged on the side of the DOC oxidation catalyzers, and exhaust gas gas outlet is arranged on the SCR catalyzed conversions
The side of device, the front and back ends of the DOC oxidation catalyzers are respectively equipped with the first exhaust temperature sensor and the second exhaust temperature sensor, institute
The inlet end for stating DOC oxidation catalyzers is equipped with the first nitrogen oxide sensor, and the rear ends of the DPF diesel particulate filters is equipped with the
Three exhaust temperature sensors, the inlet and outlet end of the DPF diesel particulate filters are equipped with pressure sensor, the urea mixing
Urea nozzle is integrated with device, is equipped with urea nozzle fender bracket around the urea nozzle, after the SCR catalytic converter
End is equipped with the 4th exhaust temperature sensor, and the outlet side of the SCR catalysis reductor is equipped with the second nitrogen oxide sensor, the SCR catalysis
The side of reductor is equipped with nitrogen oxide sensor fender bracket, and the control unit of nitrogen oxide sensor is bolted on the nitrogen oxygen and passes
On sensor fender bracket.
Further, the differential pressure pickup is welded on the SCR by differential pressure pickup fixing bracket and is catalyzed reductor
One end of the upper close DPF diesel particulate filters.
Further, further include post processing transition harness and corresponding connector, the transition harness pass through cylinder branch
Frame is fixed on the cylinder of the DOC-DPF-SCR assembly apparatus, and the connector can be by the urea nozzle, first row temperature
Sensor, the second exhaust temperature sensor, the 3rd exhaust temperature sensor, the 4th exhaust temperature sensor, the first nitrogen oxide sensor, the second nitrogen oxygen pass
The harness of sensor and differential pressure pickup carry out it is integrated after be connected with one end of the transition harness, the transition harness it is another
End is connected with overall wire sheaves.
Further, between the DOC oxidation catalyzers and the DPF diesel particulate filters by clamp connection,
Pass through clamp connection between the DPF diesel particulate filters and the urea mixer.
Further, the waste gas inlet is equipped with circular flange disk with the exhaust gas gas outlet.
Further, first nitrogen oxide sensor and second nitrogen oxide sensor pass through rat tail and the nitrogen
The control unit connection of lambda sensor.
Further, first exhaust temperature sensor, the second exhaust temperature sensor, the 3rd exhaust temperature sensor, the 4th row's temperature pass
Sensor, the first nitrogen oxide sensor, the second nitrogen oxide sensor and differential pressure pickup lead to the electronic control unit ECU of engine
Letter connection.
Advantages of the present invention is as follows：
(1) present invention ensures state's VI after-treatment systems calibration using the DOC-DPF-SCR encapsulation assembly designs of high integration
Accuracy, the discharge uniformity and adaptability of lifting state VI after-treatment systems.
(2) modularized design of the achievable DOC-DPF-SCR assembly apparatus of the present invention, applied to starting for different displacements
Machine, it is versatile.
(3) arrangement of the present invention is simple, is readily transported, installs, and can reduce vehicle factor mistakes and omissions dress.
(4) urea nozzle fender bracket of the invention, nitrogen oxide sensor fender bracket, differential pressure pickup fixing bracket can be effective
Urea nozzle and sensor are protected, reliability is high.
(5) present invention is fixed using the Integrated design of post processing transition harness easy to the harness connection and installation at vehicle end.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole attached drawing, identical component is denoted by the same reference numerals.
Fig. 1 is the schematic diagram of integrated form DOC-DPF-SCR assembly apparatus provided in an embodiment of the present invention.
Fig. 2 is the nitrogen oxide sensor fender bracket knot of integrated form DOC-DPF-SCR assembly apparatus provided in an embodiment of the present invention
Composition, which respectively show front view and top view.
Fig. 3 is the differential pressure pickup fixing bracket of integrated form DOC-DPF-SCR assembly apparatus provided in an embodiment of the present invention
Front view.
Fig. 4 is another arrangement of the transition harness of integrated form DOC-DPF-SCR assembly apparatus provided in an embodiment of the present invention
Schematic diagram.
Fig. 5 is another arrangement of the transition harness of integrated form DOC-DPF-SCR assembly apparatus provided in an embodiment of the present invention
Schematic diagram.
Reference numeral is as follows in figure：
1-DOC oxidation catalyzer 2-DPF diesel particulate filters
3- urea mixer 4-SCR catalytic converters
51- waste gas inlet 52- exhaust vents
61- the first exhaust temperature sensor the second exhaust temperature sensors of 62-
The 4th exhaust temperature sensors of the 3rd exhaust temperature sensor 64- of 63-
71- the first nitrogen oxide sensor the second nitrogen oxide sensors of 72-
8- differential pressure pickup 9- nitrogen oxide sensor fender brackets
10- urea nozzle 11- urea nozzle fender brackets
12- post-processes transition harness 121- connectors
Harness thinner harness 123- thicker 122-
The interface 13-DPF dismounting clips of 124- overall wire sheaves
14- differential pressure pickup fixing bracket 141- cover boards
142- pressure port 143- bolts
144- bolt 15- cylinder stents
Embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although this public affairs is shown in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.Conversely, there is provided these embodiments are to be able to be best understood from the disclosure, and can be by this public affairs
The scope opened completely is communicated to those skilled in the art.
Fig. 1 shows the integrated form for engine state VI after-treatment systems provided according to the embodiment of the present invention
The structure diagram of DOC-DPF-SCR assembly apparatus.As shown in Figure 1, the present apparatus includes what is set gradually according to the flow direction of exhaust gas
DOC oxidation catalyzers 1, DPF diesel particulate filters 2, urea mixer 3 and SCR catalytic converter 4, waste gas inlet
51 are arranged on the side of DOC oxidation catalyzers 1, and for receiving the tail gas from engine exhaust system, exhaust gas gas outlet 52 is set
Put in the side of SCR catalytic converter 4, for discharging the tail gas after SCR is handled.Waste gas inlet 51 and exhaust gas gas outlet
52 are connected using circular flange structure with exhaust pipe so that the applicability of vehicle is stronger.
The front and back ends of DOC oxidation catalyzers 1 are respectively equipped with the first exhaust temperature sensor 61 and the second exhaust temperature sensor 62, the
The initiation temperature of one exhaust temperature sensor 61 measurement DOC oxidation catalyzers 1, the second exhaust temperature sensor 62 measurement DPF diesel particulations
The inlet temperature of filter 2.The inlet end of DOC oxidation catalyzers 1 is equipped with the first nitrogen oxide sensor 71, for locating after measuring SCR
NO before reasonxConcentration.
The rear end of DPF diesel particulate filters 2 is equipped with the 3rd exhaust temperature sensor 63, and the 3rd exhaust temperature sensor 63 is set
In the rear end of DPF diesel particulate filters 2, the gas parameter measured is more accurate.DPF diesel particulate filters 2 into, row
Gas end is equipped with differential pressure pickup 8, for accurately measuring the pressure difference signal at 2 both ends of DPF diesel particulate filters.Due to DPF portions
Temperature on part is higher, and differential pressure pickup fixing bracket 14 is arranged in SCR catalytic converter 4.
Differential pressure pickup fixing bracket 14 is fixed on DOC-DPF-SCR assembly cylinders by welding manner, such as Fig. 3 institutes
Show, differential pressure pickup 8 is fixed on differential pressure pickup fixing bracket 14 by bolt 144, which can meet pressure
Port 142 must be vertically downward installation requirement, ensure the measurement accuracy of differential pressure pickup 8 and the accuracy of DPF calibration, and prevent
The only accidental damage of connector.
In addition, differential pressure pickup fixing bracket 14 can be to avoid rain drop erosion, sludge splashing, stone equipped with cover board 141
The potential failure risks such as impact, in specific implementation, differential pressure pickup fixing bracket 14 is fixed on by cover board 141 by bolt 143
On.
The front and rear ends of DPF diesel particulate filters 2 is equipped with DPF dismounting clips 13, and clip 13 is dismantled by DPF
DPF diesel particulate filters 2 are connected respectively with DOC oxidation catalyzers 1, urea mixer 3, interface form is flexible, can be real
Now fast quick-detach, easy to DPF detachable maintainings so that vehicle matching is with strong applicability.
The top of urea mixer 3 is integrated with urea nozzle 10, and urea nozzle fender bracket is equipped with around urea nozzle 10
11, urea nozzle fender bracket 11 is fixed on urea mixer 3.The top that urea nozzle 10 is arranged on urea mixer 3 can
Preferably urea droplets are fully atomized with exhaust gas and are mixed, improve NH3Uniformity, avoids urea crystals.Urea nozzle is protected
Frame 11 surrounds urea nozzle 10, and urea nozzle 10 can be avoided to collide with transport and vehicle assembling process.
Urea nozzle 10, urea nozzle fender bracket 11 can use various ways, example with being fixedly connected for urea mixer 3
Such as, using welding, riveting and being bolted, the present invention does not limit specifically.In being preferable to carry out, urea nozzle 10 passes through bolt
It is fixedly connected with urea mixer 3, easy to which urea nozzle 10 is dismounted and replaced, urea nozzle fender bracket 11 is also by spiral shell
Bolt is fixed on urea mixer 3.
The rear end of SCR catalytic converter 4 is equipped with the 4th exhaust temperature sensor 64, and the outlet side of SCR catalytic converter 4 is equipped with the
Two nitrogen oxide sensors 72, for measuring the NO after SCR is handledxConcentration.
The side of SCR catalytic converter 4 is equipped with nitrogen oxide sensor fender bracket 9, and the control unit of two nitrogen oxide sensors is equal
It is bolted on nitrogen oxide sensor fender bracket 9.As shown in Fig. 2, nitrogen oxide sensor fender bracket 9 is sheet metal component, installation letter
Just, installation fixing position can be provided for sensor control unit to put and play control unit protective action at the same time, while just
Opening and inspecting or replacing when maintenance.
The present apparatus further includes post processing transition harness 12 and corresponding connector 121, since harness drops into DOC-
In the presence of by the risk of baking of high temperature when on the cylinder of DPF-SCR assemblies or closer to the distance, transition harness 12 is passed through into cylinder branch
Frame 15 is fixed on the cylinder of DOC-DPF-SCR assemblies, and the connector 121 of post processing transition harness 12 patches for 32 pin
Part, by the connector of transition harness 12 can by urea nozzle 10, the first exhaust temperature sensor 61, the second exhaust temperature sensor 62,
3rd exhaust temperature sensor 63, the 4th exhaust temperature sensor 64, the first nitrogen oxide sensor 71, the second nitrogen oxide sensor 72 and pressure difference pass
The harness of sensor 8 is integrated, it can realize plug and play after matching somebody with somebody with overall wire sheaves to inserting, is connected easy to the harness at vehicle end
Connect and install fixation.
Arrangement, position, size and the thickness for post-processing transition harness 12 can be according to different sensors
Position is versatile and flexible to be arranged to adapt to vehicle installation requirement, is realized the integrated of DOC-DPF-SCR assembly apparatus, modularization, is led to
With the design requirement of change, the present invention does not limit specifically.
As shown in figure 4, in another embodiment, transition harness 12 is by thicker harness 122 and each biography of thinner connection
The harness 123 of sensor forms, and the length of thicker harness 122 is longer, and a thicker harness 122 is consolidated by cylinder stent 15
The side of cylinder is scheduled on, different sensors is integrated and connected onto the thicker harness 122 by thinner harness 123, then
Connected by the connector of the thicker harness 122 connector corresponding with vehicle, in the interface 124 being connected with vehicle such as figure
It is shown, SCR catalytic converter 4 is arranged on close to one end of gas outlet.The connector of the transition harness 12 is the total of 32 pin
Connector, it is not necessary to which sensor corresponding with vehicle to inserting connection, prevents from patching mistake and line respectively by each sensor
Beam arrangement is chaotic.
As shown in figure 5, in another embodiment, transition harness 12 is by thicker harness 122 and each biography of thinner connection
The harness 123 of sensor forms, and the length of thinner harness 123 is longer, by the thinner harness 123 of more connection different sensors
The side of cylinder is fixed on by cylinder stent 15, then these thinner harness 123 are integrated and connected to thicker harness 122
On, connected by the connector connector corresponding with vehicle on thicker harness 122, the interface 124 being connected with vehicle is such as
Shown in figure, SCR catalytic converter 4 is arranged on close to one end of gas outlet.
The course of work of the present invention is as follows：
During specific works, engine exhaust enters in DOC oxidation catalyzers 1 from air inlet 51, and exhaust gas is in DOC oxidation catalysis
Oxidation reaction is carried out in the cylinder of device 1, removes hydrocarbon HC and carbon monoxide CO in removing exhaust gas, while improve into DPF
The exhaust gas temperature of diesel particulate filter 2.The inlet temperature of DPF is improved, is conducive to the initiative regeneration of DPF.Exhaust gas is by DOC oxygen
The cylinder for changing catalyst converter 1 is directly entered in the cylinder of DPF diesel particulate filters 2, passes through DPF diesel particulate filters 2
Granule capturing effect, filter out the PM in exhaust gas.Then exhaust gas is mixed into urea mixer 3, this is in suitable temperature
When, urea nozzle 10 sprays urea liquid, after urea liquid and exhaust gas are sufficiently mixed in urea mixer 3, urea liquid point
The NH of solution3Into SCR catalytic converter 4, and making choice property reduction reaction herein, remove most NO in removing exhaust gasx, then
Discharged into by gas outlet 52 in air, state's VI discharge standards are met after tail gas is post-treated.
Integrated form DOC-DPF-SCR assembly apparatus provided by the invention can be applied to state's VI after-treatment systems, the device
The annexes such as multiple exhaust temperature sensors, nitrogen oxide sensor, differential pressure pickup and urea nozzle are integrated with, and pass through different structure
Protective cradle urea nozzle, nitrogen oxide sensor, differential pressure pickup are protected, prevent transport assemble and vehicle use process
In damage of colliding with.
Meanwhile post-process transition harness designing scheme, can be realized according to the position of different sensors it is versatile and flexible, can
To be well adapted for state VI vehicle installation requirements, realize that the integrated moduleization of DOC-DPF-SCR assembly apparatus is unitized and set
Meter requires.
In addition, the present apparatus can save the arrangement space of state's VI after-treatment systems, be conducive to main engine plants and realize plug and play,
Efficiency of assembling is improved, reduces the mistakes and omissions dress of after-treatment system.The design of integrated form at the same time, reliability is high, and arrangement is succinct, Ke Yibao
Conformity of production and beauty are demonstrate,proved, cures every emission performance index in performance development, improves state VI discharge uniformity and durable
Property.
It is pointed out that in the description of the present invention, term " first ", " second ", " the 3rd " are only used for a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (7)
1. a kind of integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics, it is characterised in that including according to exhaust gas
Flow direction the DOC oxidation catalyzers, DPF diesel particulate filters, urea mixer and the SCR catalyzed conversions that set gradually
Device, waste gas inlet are arranged on the side of the DOC oxidation catalyzers, and exhaust gas gas outlet is arranged on the SCR catalytic converter
Side, the front and back ends of the DOC oxidation catalyzers are respectively equipped with the first exhaust temperature sensor and the second exhaust temperature sensor, described
The inlet end of DOC oxidation catalyzers is equipped with the first nitrogen oxide sensor, and the rear end of the DPF diesel particulate filters is equipped with the 3rd
Exhaust temperature sensor, the inlet and outlet end of the DPF diesel particulate filters are equipped with pressure sensor, the urea mixer
On be integrated with urea nozzle, be equipped with urea nozzle fender bracket, the rear end of the SCR catalytic converter around the urea nozzle
Equipped with the 4th exhaust temperature sensor, the outlet side of the SCR catalysis reductor is equipped with the second nitrogen oxide sensor, and the SCR catalysis is also
The side of prototype is equipped with nitrogen oxide sensor fender bracket, and the control unit of nitrogen oxide sensor is bolted on the nitrogen oxygen sensing
On device fender bracket.
2. integrated form DOC-DPF-SCR assembly apparatus according to claim 1, it is characterised in that the differential pressure pickup
The SCR is welded on by differential pressure pickup fixing bracket to be catalyzed on reductor close to the DPF diesel particulate filters
One end.
3. integrated form DOC-DPF-SCR assembly apparatus according to claim 1, it is characterised in that further include and post-processed
Branch-cut bridge beam and corresponding connector, the transition harness are fixed on the DOC-DPF-SCR assembly apparatus by cylinder stent
Cylinder on, the connector can be by the urea nozzle, the first exhaust temperature sensor, the second exhaust temperature sensor, the 3rd row's temperature
Sensor, the 4th exhaust temperature sensor, the first nitrogen oxide sensor, the harness of the second nitrogen oxide sensor and differential pressure pickup are collected
One end connection of transition harness described in Cheng Houyu, the other end of the transition harness are connected with overall wire sheaves.
4. integrated form DOC-DPF-SCR assembly apparatus according to claim 1, it is characterised in that the DOC oxidation catalysis
Pass through clamp connection, the DPF diesel particulate filters and the urea between device and the DPF diesel particulate filters
Pass through clamp connection between mixer.
5. integrated form DOC-DPF-SCR assembly apparatus according to claim 1, it is characterised in that the waste gas inlet
Circular flange disk is equipped with the exhaust gas gas outlet.
6. integrated form DOC-DPF-SCR assembly apparatus according to claim 1, it is characterised in that the first nitrogen oxygen passes
Sensor and second nitrogen oxide sensor are connected by rat tail with the control unit of the nitrogen oxide sensor.
7. the integrated form DOC-DPF-SCR assembly apparatus according to any one of claim 1 to 6, it is characterised in that institute
State the first exhaust temperature sensor, the second exhaust temperature sensor, the 3rd exhaust temperature sensor, the 4th exhaust temperature sensor, the first nitrogen oxide sensor,
The electronic control unit ECU of second nitrogen oxide sensor and differential pressure pickup with engine is communicated to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711261232.2A CN107989675A (en) | 2017-12-04 | 2017-12-04 | Integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711261232.2A CN107989675A (en) | 2017-12-04 | 2017-12-04 | Integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics |
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| Publication Number | Publication Date |
|---|---|
| CN107989675A true CN107989675A (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711261232.2A Pending CN107989675A (en) | 2017-12-04 | 2017-12-04 | Integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412585A (en) * | 2018-05-16 | 2018-08-17 | 安徽全柴动力股份有限公司 | A kind of grain catcher and automobile |
| CN108561246A (en) * | 2018-06-04 | 2018-09-21 | 广西玉柴机器股份有限公司 | Diesel engine cooling EGR discharge treating systems |
| CN110185518A (en) * | 2019-05-24 | 2019-08-30 | 安徽江淮汽车集团股份有限公司 | Post-process integrating device and diesel engine |
| CN110578591A (en) * | 2019-09-29 | 2019-12-17 | 无锡威孚力达催化净化器有限责任公司 | Integrated wiring harness device for engine aftertreatment assembly |
| CN110836137A (en) * | 2019-07-30 | 2020-02-25 | 万向通达股份公司 | Vehicle post processor |
| CN111749773A (en) * | 2020-08-03 | 2020-10-09 | 广西玉柴机器股份有限公司 | Tail gas emission control system of non-road diesel engine |
| CN112727572A (en) * | 2021-01-04 | 2021-04-30 | 东风汽车股份有限公司 | Integrated type post-processing device for automobile |
| CN112761761A (en) * | 2021-01-22 | 2021-05-07 | 中国船舶重工集团公司第七一一研究所 | Reactor, flue gas treatment system and control method |
| CN112780394A (en) * | 2021-02-08 | 2021-05-11 | 广西玉柴机器股份有限公司 | Tail gas aftertreatment assembly device for non-road state four diesel engines |
| CN112975385A (en) * | 2021-03-05 | 2021-06-18 | 河北亿利康纳利亚环保科技有限公司 | Assembly method of tail gas aftertreatment assembly |
| CN113756922A (en) * | 2021-09-29 | 2021-12-07 | 广西玉柴机器股份有限公司 | Diesel engine test bench tail gas treatment control device that six state discharged |
| CN113898452A (en) * | 2021-09-29 | 2022-01-07 | 一汽解放汽车有限公司 | Multifunctional postprocessor device |
| CN114575980A (en) * | 2022-03-04 | 2022-06-03 | 广西玉柴机器股份有限公司 | Tightly-coupled diesel engine exhaust aftertreatment system and method |
| CN115075926A (en) * | 2022-05-11 | 2022-09-20 | 潍柴动力股份有限公司 | Aftertreatment fault detection device and method and diesel engine |
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Cited By (18)
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| CN108412585A (en) * | 2018-05-16 | 2018-08-17 | 安徽全柴动力股份有限公司 | A kind of grain catcher and automobile |
| CN108561246A (en) * | 2018-06-04 | 2018-09-21 | 广西玉柴机器股份有限公司 | Diesel engine cooling EGR discharge treating systems |
| CN110185518A (en) * | 2019-05-24 | 2019-08-30 | 安徽江淮汽车集团股份有限公司 | Post-process integrating device and diesel engine |
| CN110836137A (en) * | 2019-07-30 | 2020-02-25 | 万向通达股份公司 | Vehicle post processor |
| CN110578591A (en) * | 2019-09-29 | 2019-12-17 | 无锡威孚力达催化净化器有限责任公司 | Integrated wiring harness device for engine aftertreatment assembly |
| CN110578591B (en) * | 2019-09-29 | 2024-05-28 | 无锡威孚力达催化净化器有限责任公司 | Assembly integrated harness device for engine aftertreatment |
| CN111749773B (en) * | 2020-08-03 | 2024-03-19 | 广西玉柴机器股份有限公司 | Exhaust emission control system of off-road diesel engine |
| CN111749773A (en) * | 2020-08-03 | 2020-10-09 | 广西玉柴机器股份有限公司 | Tail gas emission control system of non-road diesel engine |
| CN112727572A (en) * | 2021-01-04 | 2021-04-30 | 东风汽车股份有限公司 | Integrated type post-processing device for automobile |
| CN112761761A (en) * | 2021-01-22 | 2021-05-07 | 中国船舶重工集团公司第七一一研究所 | Reactor, flue gas treatment system and control method |
| CN112780394A (en) * | 2021-02-08 | 2021-05-11 | 广西玉柴机器股份有限公司 | Tail gas aftertreatment assembly device for non-road state four diesel engines |
| CN112975385A (en) * | 2021-03-05 | 2021-06-18 | 河北亿利康纳利亚环保科技有限公司 | Assembly method of tail gas aftertreatment assembly |
| CN113898452A (en) * | 2021-09-29 | 2022-01-07 | 一汽解放汽车有限公司 | Multifunctional postprocessor device |
| CN113756922A (en) * | 2021-09-29 | 2021-12-07 | 广西玉柴机器股份有限公司 | Diesel engine test bench tail gas treatment control device that six state discharged |
| CN113756922B (en) * | 2021-09-29 | 2024-03-29 | 广西玉柴机器股份有限公司 | Six-emission diesel engine test bench tail gas treatment control device |
| CN114575980A (en) * | 2022-03-04 | 2022-06-03 | 广西玉柴机器股份有限公司 | Tightly-coupled diesel engine exhaust aftertreatment system and method |
| CN115075926A (en) * | 2022-05-11 | 2022-09-20 | 潍柴动力股份有限公司 | Aftertreatment fault detection device and method and diesel engine |
| CN115075926B (en) * | 2022-05-11 | 2024-03-19 | 潍柴动力股份有限公司 | Post-processing fault detection device and method and diesel engine |
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