CN108397265A - Urea filtration system and after-treatment system component - Google Patents
Urea filtration system and after-treatment system component Download PDFInfo
- Publication number
- CN108397265A CN108397265A CN201711107225.7A CN201711107225A CN108397265A CN 108397265 A CN108397265 A CN 108397265A CN 201711107225 A CN201711107225 A CN 201711107225A CN 108397265 A CN108397265 A CN 108397265A
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- China
- Prior art keywords
- urea
- filter
- heating
- nozzle
- filtration system
- Prior art date
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- Pending
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 176
- 239000004202 carbamide Substances 0.000 title claims abstract description 176
- 238000001914 filtration Methods 0.000 title claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 37
- 239000000110 cooling liquid Substances 0.000 claims description 19
- 239000002826 coolant Substances 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 2
- 238000010257 thawing Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 210000002700 urine Anatomy 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/18—Heating or cooling the filters
-
- 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
- F01N11/005—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 the temperature or pressure being estimated, e.g. by means of a theoretical model
-
- 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
-
- 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
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
- F01N2900/1806—Properties of reducing agent or dosing system
- F01N2900/1808—Pressure
-
- 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
- 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
A kind of Urea filtration system comprising urea box and heating and filtering component, wherein the heating and filtering component includes mounting base, urea tube, the filter and heating device being housed in the mounting base.The heating and filtering component includes being fixed on the lower section of the mounting base and to accommodate the metal heat-conducting cylinder of the filter.The Urea filtration system further includes the filter controller of the pressure sensor imported and exported mounted on filter outlet or filter inlet or the filter and the signal fed back according to the pressure sensor to judge whether the filter needs replacing.So set, a part of heat is transmitted to by heat-conducting piece in metal heat-conducting cylinder by one aspect of the present invention, to carry out heating defrosting to the urea in it, structure design is simple, heating is convenient；On the other hand, by the way that pressure sensor is arranged to judge whether filter needs replacing, the intelligence of system is improved.
Description
Be on 2 8th, 2017 this application claims the applying date, application No. is 201710069555.5, entitled " add
Heat filtering component and after-treatment system component " and the applying date be September in 2017 19, application No. is
The Chinese patent application of 201710851576.2, entitled " heating and filtering component and after-treatment system component " it is preferential
Power, entire contents are hereby incorporated by reference in the application.
Technical field
The present invention relates to a kind of Urea filtration system and after-treatment system components, belong to motor exhaust post-processing
Technical field.
Background technology
It is more and more tighter with the discharge standard of internal-combustion engines vehicle, in order to reduce the harmful substances such as oxynitrides in exhaust,
The post-processing technology of industry generally use is selective catalytic reduction (SCR) at present, and installs in the upstream of SCR and sprayed into exhaust
Penetrate urea liquid.Hydrolysis occurs for urea liquid, pyrolysis generates ammonia, and is chemically reacted with oxynitrides etc., and then drops
The concentration of low harmful substance.
Urea injection system currently on the market generally includes air assist system and non-air auxiliary system.Certainly, nothing
By which kind of system include urea box assembly, be connected with the urea box assembly by low pressure pipeline pump feed unit, pass through
The nozzle module and controller that pressure piping is connected with pump feed unit.Pump feed unit includes that urea pump and pressure pass
Sensor etc., nozzle module include urea nozzle etc..Urea pump and urea nozzle interval larger distance, and pass through urea tube phase
Even.Existing urea injection system includes more parts, and installation is complicated, and cost is higher.
In addition, because urea can freeze at low ambient temperatures, in order to make after-treatment system can adapt to lower temperature ring
Border, usually can all be arranged heating and filtering component in urea box, and engine coolant is introduced into the urea in urea box to icing
It is heated.It thaws in view of heating and needs the regular hour, and after-treatment system can not wait for all urea to be all defrosted
It just works later, therefore, how to carry out the technical issues of effective heat management is industry generally existing.
Invention content
It transmits convenient the purpose of the present invention is to provide a kind of heat and is easy to judge the urea whether filter needs replacing
Heating and filtering system and after-treatment system component with the Urea filtration system.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of Urea filtration system comprising urea
Case and to be installed on the heating and filtering component on the urea box, wherein the heating and filtering component includes mounting base, urine
Element pipe, the filter that is housed in the mounting base and to be heated to the filter and/or the urea box
Heating device, the urea tube are equipped with the urea liquid entrance positioned at the upstream of the filter, and the mounting base is additionally provided with position
In the downstream of the filter urea liquid export, the heating and filtering component include be fixed on the mounting base lower section and
To accommodate the metal heat-conducting cylinder of the filter, the urea tube is connected to the metal heat-conducting cylinder, the metal heat-conducting cylinder
Equipped with outer wall, the heating and filtering component further includes the heat-conducting piece for connecting the outer wall and the heating device；The urea adds
Heat filtering system further includes mounted on filter outlet or filter inlet or the filter inlet and the filtering
The pressure sensor of device outlet；The Urea filtration system further include the signal that is fed back according to the pressure sensor with
Judge the filter controller whether filter needs replacing.
As further improved technical scheme of the present invention, the pressure sensor is B/P EGR Back Pressure Transducer EGR；The urea adds
Heat filtering system further includes the liquid level sensor being located in the urea box and urea quality and temperature sensor, the liquid level
Signal is fed back to the filter controller by sensor and the urea quality with temperature sensor；The filter control
Device is communicated by CAN bus and control unit of engine.
As further improved technical scheme of the present invention, the heating device includes the heating being connect with the mounting base
Pipe and cooling water valve, the mounting base is equipped with the cooling liquid inlet connector being connect with the heating tube and cooling liquid outlet connects
Head, wherein the cooling water valve is controlling the flowing of engine coolant.
As further improved technical scheme of the present invention, the heating device includes electric heating tube.
As further improved technical scheme of the present invention, the metal heat-conducting cylinder is with the mounting base injection molding one
It rises.
As further improved technical scheme of the present invention, the outer wall is cylinder, and the metal heat-conducting cylinder further includes
The bottom wall being connected with the outer wall.
As further improved technical scheme of the present invention, the cooling liquid inlet connector and the cooling liquid outlet connector
Positioned at the same side of the mounting base；The urea liquid outlet and the cooling liquid inlet connector and the cooling liquid outlet
Connector is respectively positioned on the same side of the mounting base.
As further improved technical scheme of the present invention, the heat-conducting piece includes the first thermally conductive sheet and with described first
The second thermally conductive sheet that thermally conductive sheet is fixed together；First thermally conductive sheet is equipped with first reclining for the side for sticking on the outer wall
Two the first mounting portions that portion and the both sides for reclining portion from described first each extend over；Second thermally conductive sheet is equipped with and sticks on
The second of the other side of the outer wall reclines two second installations that portion and the both sides that recline portion from described second each extend over
Portion；First mounting portion mutually sticked together is fixed with second mounting portion by mechanical connection manner.
The invention further relates to a kind of after-treatment system components comprising integrating device and above-mentioned urea of the pump with nozzle
Heating and filtering system, wherein described pump the urea liquid for passing through the Urea filtration system is pumped into the spray
Mouth, to spray urea droplets in the exhaust to engine, the integrating device includes shell, at least partly installs the nozzle
In in the shell pump group part and the nozzle assembly that is at least partly installed in the shell, wherein the shell includes position
In the upstream of the pump group part and the access road that is connected to the pump group part and positioned at the downstream of the pump group part and with institute
State the exit passageway of pump group part connection, the access road and the urea liquid outlet, the exit passageway with it is described
Nozzle assembly is connected to；The pump group part includes the electrical-coil to transfer tube, and the nozzle assembly includes driving nozzle
Nozzle coil, wherein the electrical-coil is independently controlled respectively with the nozzle coil.
As further improved technical scheme of the present invention, the integrating device includes and the electrical-coil and described
The controller of nozzle coil connection, the controller are respectively independently controlled the pump and the nozzle.
Compared to the prior art, the present invention defines a relatively small internal volume by metal heat-conducting cylinder, one
Heat is divided to be transmitted in metal heat-conducting cylinder by heat-conducting piece, to carry out heating defrosting to the urea in it, structure design is simple, adds
Heat is convenient.In addition, by the way that pressure sensor is arranged, filter controller was judged by the signal fed back to pressure sensor
Whether filter needs replacing, and improves the intelligence of system.
In addition, present invention pump and the integrating device of nozzle well integrate pump with nozzle, it is simple in structure, tight
It gathers, greatly facilitates the installation of client.In addition, by controlling electrical-coil and nozzle coil, so as to avoid
Interfering with each other between pump and nozzle, improves the accuracy of control.It is integrated with urea pump and urea nozzle in integrating device
On the basis of, due to the raising of control accuracy, amount and the oxynitrides of the urea that can be sparged into exhaust reach suitable ratio
Example, reduces the crystallization risk generated because excessively spraying urea.
Description of the drawings
Fig. 1 is that the exhaust gas aftertreatment system of the present invention applies schematic diagram when handling motor exhaust.
Fig. 2 is the schematic diagram of integrating device in Fig. 1.
Fig. 3 is the stereoscopic schematic diagram of heating and filtering component in Fig. 1.
Fig. 4 is the optical cable of Fig. 3, and wherein filter is separated.
Fig. 5 is that further stereogram exploded view, wherein heat-conducting piece are separated after filter in removal Fig. 4.
Fig. 6 is the front view of Fig. 3.
Fig. 7 is the left view of Fig. 3.
Fig. 8 is the vertical view of Fig. 3.
Fig. 9 is the upward view of Fig. 3.
Figure 10 is the diagrammatic cross-section of the line A-A along Fig. 6.
Figure 11 is the diagrammatic cross-section of the line B-B along Figure 10.
Figure 12 is the schematic diagram of Urea filtration system in the first embodiment in Fig. 1.
Figure 13 is the schematic diagram of Urea filtration system in this second embodiment in Fig. 1.
Specific implementation mode
It please join shown in Fig. 1, present invention is disclosed a kind of exhaust gas aftertreatment systems 100, can be applied to processing engine 10
Tail gas, reduce the discharge of harmful substance to meet the requirement of emission regulation.The exhaust gas aftertreatment system 100 is including after tail gas
The spraying system 200 of processing and the package system 300 of exhaust aftertreatment, wherein the spraying system 200 includes to from urine
Pumped in plain case 201 urea liquid (ginseng arrow X shown in) and to the engine 10 air inlet or exhaust (such as to exhaust
In pipe 106 or package system 300) in injection urea liquid nozzle assembly.It is described in illustrative embodiments of the present invention
Nozzle assembly is a kind of integrating device 1.The package system 300 include positioned at 1 downstream of the integrating device mixer 301 with
And the carrier 30 as one kind 2 positioned at 301 downstream of the mixer.Certainly, mixer can not also be set in some embodiments, or
Two or more mixer is set.The carrier 30 as one kind 2 may, for example, be selective catalytic reduction (SCR) etc..
The engine 10 has engine coolant circulation loop.It please join shown in Fig. 1, in the embodiment party that the present invention illustrates
In formula, the engine coolant circulation loop includes that first circulation circuit 101 (shown in ginseng block arrow Y) and second circulation are returned
Road 102 (is joined shown in thin arrow Z), wherein the first circulation circuit 101 is to the cooling integrating device 1, to reduce its quilt
The risk that the engine exhaust of high temperature is burnt out；The second circulation circuit 102 is added to heat the urea box 201 with realizing
Hot defrosting function.It is understood that in first circulation circuit 101, the integrating device 1 is equipped with for engine cool liquid stream
The inlet attack 103 entered and the outlet connection 104 flowed out for engine coolant；In second circulation circuit 102, it is equipped with
Control valve 105 realizes the control to second circulation circuit 102 to open or close the control valve 105 under appropriate conditions
System.It is equipped with the heating and filtering component 202 being connected in the second circulation circuit 102 in the urea box 201, is started with utilizing
The temperature of machine coolant liquid carries out heating defrosting to urea liquid, and molten to urea using primary filter 203 and filter 204
Liquid is filtered.In one embodiment of the invention, the primary filter 203 is filter screen.
Just the integrating device 1 of the present invention is described in detail below.
It please join shown in Fig. 2, from principle, integrating device 1 of the invention is integrated with urea pump 11 and urea nozzle 12
Function.The urea pump 11 includes but not limited to gear pump, diaphragm pump, plunger pump or vane pump etc..It should be understood that
This term used " integrated " refer to urea pump 11 and urea nozzle 12 can be installed in as single device air inlet pipe or
On person's exhaust pipe；Or urea pump 11 is close to each other with urea nozzle 12 and is attached by shorter connecting pipe, whole
It can be considered as a device on body.
In addition, in order to be independently controlled to urea pump 11 and urea nozzle 12, exhaust gas aftertreatment system of the invention
100 are additionally provided with controller 13.It is appreciated that the controller 13 can be integrated with the integrating device 1 or with institute
Integrating device 1 is stated to be provided separately.It please join shown in Fig. 2, in illustrative embodiments of the present invention, the controller 13 is integrated in institute
It states in integrating device 1, to realize the Highgrade integration of part, improves the installation convenience of client.
The integrating device 1 is equipped with to accommodate the shell 14 of the urea pump 11 and the urea nozzle 12.Shown in Fig. 2
Embodiment be only rough display to shell 14.For example, in one embodiment, the shell 14 by urea pump 11 with
And urea nozzle 12 is shared；In another embodiment, the shell 14 is divided into and urea pump 11 matched first
Shell and with 12 matched second shell of urea nozzle, first shell is assembled together with second shell, to form one
It is whole.The shell 14 is equipped with the access road 15 being connected between the urea box 201 and the urea pump 11 and connection
Exit passageway 16 between the urea pump 11 and the urea nozzle 12.It should be noted that term used herein " enters
" outlet " in " entrance " and " exit passageway 16 " in mouthful channel 15 " is the i.e. urea pump 11 using urea pump 11 as reference
Upstream is entrance, and the downstream of urea pump 11 is outlet.The exit passageway 16 is connected to the urea nozzle 12, with to the urine
Plain nozzle 12 pumps urea liquid.It is understood that the access road 15 is located at the upstream of urea pump 11, it is logical for low pressure
Road；The exit passageway 16 is located at the downstream of urea pump 11, is high-pressure channel.
In addition, the integrating device 1 is equipped with to detect the temperature sensor 171 of temperature.The temperature sensor 171 can
To be arranged to be connected to the access road 15 and/or the exit passageway 16；Or the temperature sensor 171 can be by
It is set as mounted on any position of the integrating device 1.The signal that the temperature sensor 171 detects passes to controller
13, controller 13 can improve the injection of urea nozzle 12 based on the control algolithm designed by the input signal and other signals
Precision.The integrating device 1 is additionally provided with to detect the pressure sensor 172 of pressure, the pressure sensor 172 with it is described go out
Mouth channel 16 is connected to, the pressure in high-pressure channel to detect the outlet of urea pump 11.Due to the Integrated design of the present invention, inside is logical
The distance in road is shorter, it can be considered that the pressure sensor 172 is located closer to the urea nozzle 12.It is this
The advantages of design, is pressure of the pressure measured by pressure sensor 172 relatively in urea nozzle 12, improves data
Accuracy, and then improve the accuracy of spray of urea nozzle 12.In one embodiment of the invention, the temperature sensing
Device 171 is two elements with the pressure sensor 172；In another embodiment of the invention, the temperature sensing
Device 171 is an element with the pressure sensor 172, but has the function of detecting temperature and pressure simultaneously.
Please join shown in Fig. 2, the integrating device 1 be additionally provided be connected to the exit passageway 16 and the access road 15 it
Between overflow element 173.The overflow element 173 includes but not limited to overflow valve, safety valve or electrically-controlled valve etc..The overflow
The function of element 173 is to open the overflow element 173 when the pressure in high-pressure channel is higher than setting value, will be located at height
Urea liquid in pressure passageway is discharged into low-pressure channel or is returned directly in the urea box 201, to realize pressure tune
Section.
In order to drive urea pump 11, the urea pump 11 to be equipped with the electrical-coil 111 communicated with the controller 13.
In order to drive urea nozzle 12, the urea nozzle 12 to be equipped with the nozzle coil 121 communicated with the controller 13.
The controller 13 is communicated with the temperature sensor 171 and the pressure sensor 172, by temperature
Signal and pressure signal send the controller 13 to.Certainly, it is accurately controlled in order to realize, the controller 13 may be used also
To receive other signals, such as from CAN bus, related with engine operating parameter signal.In addition, the controller 13
The rotating speed of the urea pump 11 can also be obtained, certainly, the acquisition of tach signal can pass through corresponding speed probe 175
It (hardware) or is realized by control algolithm (software).The controller 13 is respectively to the urea pump 11 and the urea
Nozzle 12 is independently controlled.The advantages of this control, is that shadow of the action to urea nozzle 12 of urea pump 11 can be reduced
It rings, to realize relatively high control accuracy.
In addition, under certain operating modes, since the exhaust of engine has a higher temperature, and 12 ordinary circumstance of urea nozzle
It is lower to be mounted on exhaust pipe again, it is therefore desirable to which that the urea nozzle 12 is cooled down.The integrating device 1 is also set thus
There are cooling component, the cooling component to be cooled down to the urea nozzle 12 by cooling medium.The cooling medium includes
But it is not limited to air and/or engine coolant and/or lubricating oil and/or urea etc..It please join shown in Fig. 2, present invention diagram
Embodiment use water cooling, i.e., urea nozzle 12 is cooled down using engine coolant.Be equipped in shell 14 with for
The cooling duct 141 of engine coolant circulation.
It please join shown in Fig. 2, the main operational principle of the integrating device 1 is as follows：
Controller 13 drives urea pump 11 to operate, and urea liquid is inhaled by access road 15 in urea box 201
Urea pump 11, through being overpressurized and then being delivered to urea nozzle 12 by exit passageway 16.Wherein, controller 13 acquisition and/or
Calculate the signal, such as temperature, pressure, revolution speed etc. needed.When reaching injection conditions, controller 13 send out control signal to
Urea nozzle 12, such as be powered to nozzle coil 121, realize that urea sprays by controlling the movement of needle.Controller 13 is sent out
Go out to control signal to urea pump 11 to control its rotating speed, to the pressure of systems stabilisation.In illustrative embodiments of the present invention,
The controller 13 is respectively independently controlled the urea pump 11 and the urea nozzle 12.
It please join shown in Fig. 3 to Figure 11, present invention further teaches a kind of to be installed on the heating and filtering group on urea box 201
Part 202, wherein the heating and filtering component 202 include mounting base 4, the heating tube 5 being connect with the mounting base 4, urea tube 6 with
And it is housed in the filter 204 in the mounting base 4.The mounting base 4 is equipped with the cooling liquid inlet being connect with the heating tube 5
Connector 41 and cooling liquid outlet connector 42.The urea liquid that the urea tube 6 is equipped with positioned at the upstream of the filter 204 enters
Mouth 61 and the primary filter 203 positioned at the bottom of the urea liquid entrance 61.In illustrative embodiments of the present invention,
By the way that double-filtration is arranged, may be implemented preferably to filter.In addition, since filter 204 is to be removably mounted at
The top of the mounting base 4, therefore be conveniently replaceable.
The urea liquid that the mounting base 4 is additionally provided with positioned at the downstream of the filter 204 exports 43.In addition, described add
Heat filtering component 202 further includes being fixed on the lower section of the mounting base 4 and to accommodate the metal heat-conducting cylinder of the filter 204
7.The urea tube 6 is connected to the metal heat-conducting cylinder 7.The metal heat-conducting cylinder 7 is equipped with outer wall 71, the heating and filtering component
202 further include the heat-conducting piece 8 of the connection outer wall 71 and the heating tube 5.
In illustrative embodiments of the present invention, the metal heat-conducting cylinder 7 is together with 4 injection molding of the mounting base.
The outer wall 71 is cylinder, and the metal heat-conducting cylinder 7 further includes the bottom wall 72 being connected with the outer wall 71.
The cooling liquid inlet connector 41 is located at the same side of the mounting base 4 with the cooling liquid outlet connector 42, with
It is easily installed.Preferably, the urea liquid outlet 43 connects with the cooling liquid inlet connector 41 and the cooling liquid outlet
First 42 are respectively positioned on the same side of the mounting base 4.
The heat-conducting piece 8 includes the first thermally conductive sheet 81 and the second heat conduction being fixed together with first thermally conductive sheet 81
Piece 82.First thermally conductive sheet 81 is equipped with the first of the side for sticking on the outer wall 71 and reclines portion 811 and from described first
Recline two the first mounting portions 812 that the both sides in portion 811 each extend over；Second thermally conductive sheet 82 is equipped with and sticks on the outer wall
The second of 71 other side reclines two second installations that portion 821 and the both sides that recline portion 821 from described second each extend over
Portion 822；First mounting portion 811 that mutually sticks together and second mounting portion 821 by mechanical connection manner into
Row is fixed, and is including but not limited to welded, rivets, is bolted.In illustrative embodiments of the present invention, one is mutually sticked on
First mounting portion 811 risen is fixed with second mounting portion 821 by bolt 83 and nut 84.Preferably,
Described first recline portion 811 and described second portion 821 that reclines it is arc-shaped, to increase heat transfer area.
In use, engine coolant is entered from coolant liquid inlet union 41 in the heating tube 5, a part of heat is logical
It crosses heat-conducting piece 8 to be transmitted in metal heat-conducting cylinder 7, to carry out heating defrosting to the urea in it；On the other hand, heating tube 5 may be used also
To carry out heating defrosting to other urea liquids in urea box 201.It is appreciated that metal heat-conducting cylinder 7 in urea volume compared with
Small, the time for the needs that thaw is shorter.After the urea in metal heat-conducting cylinder 7 is thawed by heating, it there is in system a certain amount of
Urea liquid, in the case where meeting other conditions, after-treatment system can work.
It please join shown in Figure 12, in the first embodiment of Urea filtration system of the present invention, the Urea mistake
Filter system includes urea box 201, being installed on the heating and filtering component 202 on the urea box 201.The heating and filtering group
Part 202 is roughly the same with 202 structure of heating and filtering component described in Fig. 1 to Figure 11, and details are not described herein.
It please join shown in Figure 12, the heating and filtering component 202 includes mounting base 4, urea tube 6, is housed in the mounting base 4
Interior filter 204 and the heating device to be heated to the filter 204 and/or the urea box 201.It is described
Urea tube 6 is equipped with the urea liquid entrance 61 positioned at the upstream of the filter 204, and the mounting base 4 is additionally provided with positioned at described
The urea liquid outlet 43 in the downstream of filter 204.The heating and filtering component 202 includes being fixed under the mounting base 4
Just and to accommodate the metal heat-conducting cylinder 7 of the filter 204, the urea tube 6 is connected to the metal heat-conducting cylinder 7, described
Metal heat-conducting cylinder 7 is equipped with outer wall 71, and the heating and filtering component 202 further includes the connection outer wall 71 and the heating device
Heat-conducting piece 8；The Urea filtration system further includes mounted on filter outlet or filter inlet or the mistake
The pressure sensor 206 of filter import and the filter outlet；The Urea filtration system further includes according to the pressure
The signal that force snesor 206 is fed back is to judge filter controller 205 that whether filter 204 needs replacing.
In illustrative embodiments of the present invention, the pressure sensor 206 is B/P EGR Back Pressure Transducer EGR；The Urea mistake
Filter system further includes the liquid level sensor 207 being located in the urea box 201 and urea quality and temperature sensor 208, institute
It states liquid level sensor 207 and the urea quality and signal is fed back into the filter controller with temperature sensor 208
205；The filter controller 205 is communicated by CAN bus and control unit of engine (ECU).
In the embodiment shown in Fig. 1 and Figure 12, the heating device includes the heating being connect with the mounting base 4
Pipe 5 and cooling water valve 209, the mounting base 4 are equipped with the cooling liquid inlet connector 41 being connect with the heating tube 5 and cooling
Liquid outlet connection 42, wherein the filter controller 205 is by controlling cooling water valve 209 to control the stream of engine coolant
It is dynamic.
The present invention by filter 204, cooling water valve 209, urea box sensor group (including liquid level sensor 207 and urine
Plain quality and temperature sensor 208), pressure sensor 206 and intelligent control in one, improve the performance of product.
It please join shown in Figure 13, in the second embodiment of Urea filtration system of the present invention, the heating device packet
Electric heating tube 2021 is included, the function of heating equally may be implemented.
In addition, above example is merely to illustrate the present invention and not limits technical solution described in the invention, to this
The understanding of specification should be based on person of ordinary skill in the field, although this specification is with reference to the above embodiments pair
Present invention has been detailed description, still, it will be understood by those of ordinary skill in the art that, the technology of technical field
Personnel still can modify or equivalently replace the present invention, and all do not depart from the technology of the spirit and scope of the present invention
Scheme and its improvement should all be covered in scope of the presently claimed invention.
Claims (10)
1. a kind of Urea filtration system comprising urea box and to be installed on the heating and filtering group on the urea box
Part, wherein the heating and filtering component includes mounting base, urea tube, the filter being housed in the mounting base and to right
The heating device that the filter and/or the urea box are heated, the urea tube are equipped with positioned at the upper of the filter
The urea liquid entrance of trip, the mounting base are additionally provided with positioned at the urea liquid outlet in the downstream of the filter, and feature exists
In：The heating and filtering component includes being fixed on the lower section of the mounting base and to accommodate the metal heat-conducting of the filter
Cylinder, the urea tube are connected to the metal heat-conducting cylinder, and the metal heat-conducting cylinder is equipped with outer wall, and the heating and filtering component also wraps
Include the heat-conducting piece for connecting the outer wall and the heating device；The Urea filtration system further includes going out mounted on filter
The pressure sensor of mouth or filter inlet or the filter inlet and the filter outlet；The Urea
Filtration system further includes the mistake of the signal that is fed back according to the pressure sensor to judge whether the filter needs replacing
Filter controller.
2. Urea filtration system as described in claim 1, it is characterised in that：The pressure sensor senses for negative pressure
Device；The Urea filtration system further includes that the liquid level sensor being located in the urea box and urea quality are passed with temperature
Signal is fed back to the filter controller by sensor, the liquid level sensor and the urea quality with temperature sensor；
The filter controller is communicated by CAN bus and control unit of engine.
3. Urea filtration system as described in claim 1, it is characterised in that：The heating device includes and the installation
The heating tube and cooling water valve of seat connection, the mounting base be equipped with the cooling liquid inlet connector that is connect with the heating tube and
Cooling liquid outlet connector, wherein the filter controller is by controlling cooling water valve to control the flowing of engine coolant.
4. Urea filtration system as described in claim 1, it is characterised in that：The heating device includes electric heating tube.
5. Urea filtration system as described in claim 1, it is characterised in that：The metal heat-conducting cylinder and the mounting base
Injection molding is together.
6. Urea filtration system as described in claim 1, it is characterised in that：The outer wall is cylinder, the metal
Heat-conducting cylinder further includes the bottom wall being connected with the outer wall.
7. Urea filtration system as claimed in claim 3, it is characterised in that：The cooling liquid inlet connector with it is described cold
But liquid outlet connection is located at the same side of the mounting base；The urea liquid outlet and the cooling liquid inlet connector and institute
State the same side that cooling liquid outlet connector is respectively positioned on the mounting base.
8. Urea filtration system as described in claim 1, it is characterised in that：The heat-conducting piece include the first thermally conductive sheet with
And the second thermally conductive sheet being fixed together with first thermally conductive sheet；First thermally conductive sheet is equipped with and sticks on the one of the outer wall
The first of side reclines two the first mounting portions that portion and the both sides that recline portion from described first each extend over；Second heat conduction
Piece is equipped with the second of the other side for sticking on the outer wall and reclines portion and the both sides that recline portion from described second each extend over
Two the second mounting portions；First mounting portion mutually sticked together passes through mechanical connection manner with second mounting portion
It is fixed.
9. a kind of after-treatment system component comprising pump with it is any one in the integrating device of nozzle and such as claim 1 to 8
Urea filtration system described in, wherein described pump will pass through the urea solution pump of the Urea filtration system
It is sent to the nozzle, for the nozzle to spray urea droplets in the exhaust to engine, the integrating device includes shell, extremely
The pump group part and the nozzle assembly being at least partly installed in the shell that small part is installed in the shell, wherein described
Shell includes positioned at the upstream of the pump group part and the access road that is connected to the pump group part and positioned at the pump group part
Downstream and the exit passageway being connected to the pump group part, the access road and the urea liquid outlet, the outlet
Channel is connected to the nozzle assembly；The pump group part includes the electrical-coil to transfer tube, and the nozzle assembly includes using
To drive the nozzle coil of nozzle, wherein the electrical-coil is independently controlled respectively with the nozzle coil.
10. after-treatment system component as claimed in claim 9, it is characterised in that：The integrating device includes and the motor
Coil and the controller of nozzle coil connection, the controller carry out independent control to the pump and the nozzle respectively
System.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017100695555 | 2017-02-08 | ||
| CN201710069555 | 2017-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397265A true CN108397265A (en) | 2018-08-14 |
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ID=62347737
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710960328.1A Pending CN108397264A (en) | 2017-02-08 | 2017-10-16 | Heating and filtering component and after-treatment system component |
| CN201721329605.0U Active CN207363744U (en) | 2017-02-08 | 2017-10-16 | Heating and filtering component and after-treatment system component |
| CN201711107225.7A Pending CN108397265A (en) | 2017-02-08 | 2017-11-10 | Urea filtration system and after-treatment system component |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710960328.1A Pending CN108397264A (en) | 2017-02-08 | 2017-10-16 | Heating and filtering component and after-treatment system component |
| CN201721329605.0U Active CN207363744U (en) | 2017-02-08 | 2017-10-16 | Heating and filtering component and after-treatment system component |
Country Status (2)
| Country | Link |
|---|---|
| CN (3) | CN108397264A (en) |
| WO (1) | WO2018145496A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397264A (en) * | 2017-02-08 | 2018-08-14 | 天纳克（苏州）排放系统有限公司 | Heating and filtering component and after-treatment system component |
| US11384669B2 (en) * | 2019-07-12 | 2022-07-12 | Caterpillar Inc. | Integrated base filter for a DEF manifold |
| CN111780932B (en) * | 2020-07-14 | 2021-12-21 | 深圳市效利工程设备有限公司 | Be used for underground water pipe leak source detection device |
| CN114483262B (en) * | 2021-12-29 | 2023-05-23 | 潍柴动力股份有限公司 | Urea pump, control method and control system of urea pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018145496A1 (en) | 2018-08-16 |
| CN108397264A (en) | 2018-08-14 |
| CN207363744U (en) | 2018-05-15 |
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