CN207363744U - Heating and filtering component and after-treatment system component - Google Patents

Heating and filtering component and after-treatment system component Download PDF

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Publication number
CN207363744U
CN207363744U CN201721329605.0U CN201721329605U CN207363744U CN 207363744 U CN207363744 U CN 207363744U CN 201721329605 U CN201721329605 U CN 201721329605U CN 207363744 U CN207363744 U CN 207363744U
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CN
China
Prior art keywords
heating
urea
filtering component
mounting base
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201721329605.0U
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Chinese (zh)
Inventor
杨振球
李琦
彭威波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenneco Suzhou Emission System Co Ltd
Original Assignee
Tenneco Suzhou Emission System Co Ltd
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Filing date
Publication date
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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
    • 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
    • F01N3/18—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
    • F01N3/24—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

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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

A kind of heating and filtering component and after-treatment system component, it includes mounting base, heating tube, urea tube and the filter being contained in the mounting base.The mounting base is equipped with the cooling liquid inlet connector and cooling liquid outlet connector being connected with the heating tube.The urea tube is equipped with the urea liquid entrance positioned at the upstream of the filter, and the mounting base is additionally provided with positioned at the urea liquid outlet in the downstream of the filter.The heating and filtering component is included to house the metal heat-conducting cylinder of the filter.The metal heat-conducting cylinder is equipped with outer wall, and the heating and filtering component, which further includes, connects the outer wall and the heat-conducting piece of the heating tube.So set, the utility model defines a relatively small internal volume by metal heat-conducting cylinder, a part of heat is delivered in metal heat-conducting cylinder by heat-conducting piece, and to carry out heating defrosting to the urea in it, structure design is simple, heating is convenient.

Description

Heating and filtering component and after-treatment system component
Technical field
A kind of heating and filtering component and after-treatment system component are the utility model is related to, belongs 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 substance 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 produces 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 by low pressure pipeline with the urea box assembly pump feed unit, pass through The nozzle module and controller that pressure piping is connected with pump feed unit.Pump feed unit includes urea pump and pressure passes Sensor etc., nozzle module is including 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 relatively low temperature ring Border, usually can all set heating and filtering component in urea box, and engine coolant is introduced into urea box to the urea of icing Heated.The regular hour is needed in view of heating defrosting, and after-treatment system can not wait all urea to be all defrosted Just work afterwards, therefore, how to carry out the technical problem that effective heat management is industry generally existing.
Utility model content
It is the purpose of this utility model is to provide a kind of convenient heating and filtering component of heat transfer and heated with this Filter the after-treatment system component of component.
To achieve the above object, the utility model adopts the following technical solution：It is a kind of to be installed on urea box plus Heat filtering component, wherein the heating and filtering component include mounting base, the heating tube being connected with the mounting base, urea tube and The filter being housed in the mounting base, the mounting base be equipped with the cooling liquid inlet connector that is connected with the heating tube and Cooling liquid outlet connector, the urea tube are equipped with the urea liquid entrance positioned at the upstream of the filter, and the mounting base is also Equipped with the urea liquid outlet positioned at the downstream of the filter, the heating and filtering component includes being fixed on the mounting base Lower section and to accommodate the metal heat-conducting cylinder of the filter, the urea tube is connected with the metal heat-conducting cylinder, the metal Heat-conducting cylinder is equipped with outer wall, and the heating and filtering component, which further includes, connects the outer wall and the heat-conducting piece of the heating tube.
As the further improved technical solution of the utility model, the metal heat-conducting cylinder and the mounting base injection molding Together.
As the further improved technical solution of the utility model, the outer wall is in cylinder, and the metal heat-conducting cylinder is also Including the bottom wall being connected with the outer wall.
As the further improved technical solution of the utility model, the cooling liquid inlet connector and the cooling liquid outlet Connector is located at the same side of the mounting base.
As the further improved technical solution of the utility model, the urea liquid outlet connects with the cooling liquid inlet Head and the cooling liquid outlet connector are respectively positioned on the same side of the mounting base.
As the further improved technical solution of the utility model, the heat-conducting piece include the first thermally conductive sheet and with it is described The second thermally conductive sheet that first thermally conductive sheet is fixed together.
As the further improved technical solution of the utility model, first thermally conductive sheet is equipped with and abuts in the outer wall The first of side reclines portion and two the first mounting portions being each extended over from first both sides for reclining portion；Described second leads Backing is equipped with the second of the opposite side for abutting in the outer wall and reclines portion and to be each extended over from second both sides for reclining portion Two the second mounting portions；First mounting portion mutually sticked together passes through mechanical connection side with second mounting portion Formula is fixed.
As the further improved technical solution of the utility model, described first portion that reclines is in second portion of reclining Arc.
The utility model further relates to a kind of after-treatment system component, it includes pump and the integrating device of nozzle and foregoing Heating and filtering component, wherein the pump is pumped into the nozzle, institute to the urea liquid that will pass through the heating and filtering component Nozzle is stated to spray urea droplets in the exhaust to engine, the integrating device includes housing, is at least partly installed on institute The nozzle assembly stated the pump group part in housing and be at least partly installed in the housing, wherein the housing includes being located at institute The access road stating the upstream of pump group part and connected with the pump group part and positioned at the downstream of the pump group part and with the pump The exit passageway of component connection, the access road and the urea liquid outlet, the exit passageway and the nozzle Component connects；The pump group part includes the electrical-coil to transfer tube, and the nozzle assembly is included to drive the spray of nozzle Mouth coil, wherein the electrical-coil is independently controlled respectively with the nozzle coil.
As the further improved technical solution of the utility model, the integrating device include with the electrical-coil and The controller of the nozzle coil connection, the controller are respectively independently controlled the pump and the nozzle.
As the further improved technical solution of the utility model, the integrating device includes connecting with the exit passageway Pressure sensor and the overflow element that is connected between the exit passageway and the access road.
As the further improved technical solution of the utility model, the housing is equipped with and the cooling liquid inlet connector phase First cooling duct of connection and the second cooling duct being connected with the cooling liquid outlet connector.
Compared to the prior art, the utility model defines a relatively small internal volume by metal heat-conducting cylinder, A part of heat is delivered in metal heat-conducting cylinder by heat-conducting piece, to carry out heating defrosting, structure design letter to the urea in it Single, heating is conveniently.
In addition, the utility model pump and the integrating device of nozzle well integrate pump with nozzle, simple in structure, It is compact, greatly facilitate the installation of client.In addition, by being controlled to electrical-coil and nozzle coil, so as to avoid Interfering with each other between pump and nozzle, improves the accuracy of control.Urea pump and urea nozzle are integrated with integrating device On the basis of, due to the raising of control accuracy, the amount for the urea that can be sparged into exhaust reaches suitable with oxynitrides Ratio, reduces the crystallization risk produced because excessively spraying urea.
Brief description of the drawings
Fig. 1 is that the exhaust gas aftertreatment system of the utility model applies schematic diagram when handling motor exhaust.
Fig. 2 is the schematic diagram of integrating device in Fig. 1.
Fig. 3 is the schematic perspective view 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 three-dimensional 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 top view of Fig. 3.
Fig. 9 is the bottom 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.
Embodiment
It please join shown in Fig. 1, the utility model discloses a kind of exhaust gas aftertreatment system 100, can be applied to processing and starts The tail gas of machine 10, reduces the discharge of harmful substance to meet the requirement of Abgasgesetz.The exhaust gas aftertreatment system 100 includes tail Gas post processing spraying system 200 and exhaust aftertreatment package system 300, wherein the spraying system 200 include to Pumped from urea box 201 urea liquid (ginseng arrow X shown in) and air inlet to the engine 10 or exhaust (such as to In exhaust pipe 106 or package system 300) in injection urea liquid integrating device 1；The package system 300 includes being located at The mixer 301 in 1 downstream of integrating device and the carrier 30 as one kind 2 positioned at 301 downstream of mixer.Certainly, in some realities Mixer can not also be set by applying in mode, or set two or more mixer.The carrier 30 as one kind 2 can example Selective catalytic reduction (SCR) etc. in this way.
The engine 10 has engine coolant circulation loop.It please join shown in Fig. 1, in the reality of the utility model diagram Apply in mode, the engine coolant circulation loop is followed including first circulation circuit 101 (shown in ginseng block arrow Y) and second Loop back path 102 (is joined shown in thin arrow Z), wherein the first circulation circuit 101 is to cool down the integrating device 1, to reduce Its risk burnt out by the engine exhaust of high temperature；The second circulation circuit 102 is to heat the urea box 201, with reality Now heat defrosting function.It is understood that in first circulation circuit 101, the integrating device 1 is equipped with and supplies engine cool The inlet attack 103 and the outlet connection 104 for engine coolant outflow that liquid stream enters；In second circulation circuit 102, its Equipped with control valve 105, to open or close the control valve 105 under appropriate conditions, realize to second circulation circuit 102 Control.The heating and filtering component 202 being connected in the second circulation circuit 102 is equipped with the urea box 201, to utilize The temperature of engine coolant carries out urea liquid heating defrosting, and using primary filter 203 and filter 204 to urine Plain solution is filtered.
The integrating device 1 of the utility model is described in detail below.
It please join shown in Fig. 2, from principle, the integrating device 1 of the utility model 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 appreciated that It is that term " integrated " as used herein refers to that urea pump 11 and urea nozzle 12 can be installed in air inlet as single device On pipe or exhaust pipe；Or urea pump 11 is close to each other with urea nozzle 12 and is attached by shorter connecting pipe, It can be considered as a device on the whole.
In addition, in order to be independently controlled to urea pump 11 and urea nozzle 12, the exhaust aftertreatment of the utility model System 100 is additionally provided with controller 13.It is appreciated that the controller 13 can be integrated with the integrating device 1 or It is provided separately with the integrating device 1.It please join shown in Fig. 2, in the utility model embodiment illustrated, the controller 13 It is integrated in the 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 housing 14 of the urea pump 11 and the urea nozzle 12.Shown in Fig. 2 Embodiment be only rough display to housing 14.For example, in one embodiment, the housing 14 by urea pump 11 with And urea nozzle 12 is shared；In another embodiment, the housing 14 is divided into and urea pump 11 matched first Housing and it is assembled together with matched second housing of urea nozzle 12, the first housing with the second housing, to form one It is overall.The housing 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 " entrance " in mouthful passage 15 " with " " outlet " in exit passageway 16 " 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 with 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, lead to 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 the temperature sensor 171 to detection temperature.The temperature sensor 171 can To be arranged to connect with the access road 15 and/or the exit passageway 16；Or the temperature sensor 171 can be by It is arranged to installed in the optional 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 passage 16 connects, to detect the pressure in the high-pressure channel of the outlet of urea pump 11.It is interior due to the Integrated design of the utility model The distance of portion's passage is shorter, it can be considered that the pressure sensor 172 is located closer to the urea nozzle 12. The advantages of this design, in the pressure in the pressure measured by pressure sensor 172 relatively urea nozzle 12, improves The accuracy of data, and then improve the accuracy of spray of urea nozzle 12.It is described in a kind of embodiment of the utility model Temperature sensor 171 and the pressure sensor 172 are two elements；In the another embodiment in the utility model, The temperature sensor 171 and the pressure sensor 172 are an element, but have the work(of detection temperature and pressure at the same time Energy.
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 when the pressure in high-pressure channel is higher than setting value, and the overflow element 173 is opened, and 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 is equipped with the electrical-coil 111 communicated with the controller 13. In order to drive urea nozzle 12, the urea nozzle 12 is 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, in order to realize accurate control, 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 collection of tach signal can pass through corresponding speed probe 175 (hardware) or 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 shadow of the action to urea nozzle 12 that can reduce urea pump 11 Ring, to realize higher control accuracy.
In addition, under some operating modes, since the exhaust of engine has a higher temperature, and 12 ordinary circumstance of urea nozzle It is lower to be mounted in again on exhaust pipe, it is therefore desirable to which that the urea nozzle 12 is cooled down.The integrating device 1 is also set for this There is cooling component, the cooling component cools down the urea nozzle 12 by cooling down 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, the utility model Embodiment illustrated uses water cooling, i.e., urea nozzle 12 is cooled down using engine coolant.It is equipped with and uses in housing 14 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 into 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 gather and/or Calculate the signal needed, such as temperature, pressure, revolution speed etc..When reaching injection conditions, controller 13 send 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 control signal to urea pump 11 to control its rotating speed, so that the pressure of systems stabilisation.In the embodiment party of the utility model diagram In formula, 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, the utility model further discloses a kind of heated on urea box 201 to be installed on Component 202 is filtered, wherein the heating and filtering component 202 includes mounting base 4, the heating tube 5 being connected with the mounting base 4, urea Pipe 6 and the filter 204 being housed in the mounting base 4.The mounting base 4 is equipped with the cooling being connected with the heating tube 5 Liquid inlet union 41 and cooling liquid outlet connector 42.The urea tube 6 is equipped with the urea positioned at the upstream of the filter 204 Solution inlet 61 and the primary filter 203 positioned at the bottom of the urea liquid entrance 61.In the utility model diagram In embodiment, by setting double-filtration, it is possible to achieve preferably filtering.Further, since filter 204 is with dismountable Mode is installed on the top of the mounting base 4, therefore is 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 the lower section that is fixed on the mounting base 4 and to accommodate the metal heat-conducting cylinder of the filter 204 7.The urea tube 6 is connected with 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 for connecting the outer wall 71 and the heating tube 5.
In the utility model embodiment illustrated, the metal heat-conducting cylinder 7 is with 4 injection molding of mounting base one Rise.The outer wall 71 further includes the bottom wall 72 being connected with the outer wall 71 in cylinder, the metal heat-conducting cylinder 7.
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 abutting in 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 abuts in the outer wall The second of 71 opposite side reclines portion 821 and two second installations each extending over from second both sides for reclining portion 821 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 the utility model embodiment illustrated, mutually recline First mounting portion 811 together is fixed with second mounting portion 821 by bolt 83 and nut 84.It is preferred that Ground, 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 in the heating tube 5 from coolant inlet union 41, a part of heat leads to Cross heat-conducting piece 8 to be delivered 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 urea volume in metal heat-conducting cylinder 7 compared with Small, the time for the needs that thaw is shorter.After the urea in metal heat-conducting cylinder 7 is heated defrosting, it there is in system a certain amount of Urea liquid, in the case where meeting other conditions, after-treatment system can work.
In addition, above example is merely to illustrate the utility model and not limits the described technical side of the utility model Case, understanding of this description should be based on persons of ordinary skill in the field, although this specification is with reference to above-mentioned Embodiment has been carried out being described in detail to the utility model, still, it will be understood by those of ordinary skill in the art that, affiliated skill The technical staff in art field still can be to the utility model technical scheme is modified or replaced equivalently, and all do not depart from this practicality newly The technical solution of the spirit and scope of type and its improvement, should all cover in the right of the utility model.

Claims (12)

  1. A kind of 1. heating and filtering component, to be installed on urea box, wherein the heating and filtering component includes mounting base and institute Heating tube, urea tube and the filter being housed in the mounting base of mounting base connection are stated, the mounting base is equipped with and institute The cooling liquid inlet connector and cooling liquid outlet connector of heating tube connection are stated, the urea tube is equipped with positioned at the filter The urea liquid entrance of upstream, the mounting base are additionally provided with positioned at the urea liquid outlet in the downstream of the filter, its feature It is：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 with 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 and connect the outer wall and the heat-conducting piece of the heating tube.
  2. 2. heating and filtering component as claimed in claim 1, it is characterised in that：The metal heat-conducting cylinder is molded with the mounting base Shaping is together.
  3. 3. heating and filtering component as claimed in claim 1, it is characterised in that：The outer wall is in cylinder, the metal heat-conducting Cylinder further includes the bottom wall being connected with the outer wall.
  4. 4. heating and filtering component as claimed in claim 1, it is characterised in that：The cooling liquid inlet connector and the coolant Outlet connection is located at the same side of the mounting base.
  5. 5. heating and filtering component as claimed in claim 4, it is characterised in that：Urea liquid outlet and the coolant into Mouth connector and the cooling liquid outlet connector are respectively positioned on the same side of the mounting base.
  6. 6. heating and filtering component as claimed in claim 1, it is characterised in that：The heat-conducting piece include the first thermally conductive sheet and with The second thermally conductive sheet that first thermally conductive sheet is fixed together.
  7. 7. heating and filtering component as claimed in claim 6, it is characterised in that：First thermally conductive sheet, which is equipped with, to be abutted in outside described The first of the side of wall reclines portion and two the first mounting portions being each extended over from first both sides for reclining portion；Described Two thermally conductive sheets be equipped with abut in the outer wall opposite side second recline portion and from described second recline portion both sides difference Two the second mounting portions of extension；First mounting portion mutually sticked together is connected with second mounting portion by machinery The mode of connecing is fixed.
  8. 8. heating and filtering component as claimed in claim 7, it is characterised in that：Described first portion that reclines reclines portion with described second It is arc-shaped.
  9. 9. a kind of after-treatment system component, it includes any one in the integrating device of pump and nozzle and such as claim 1 to 8 Heating and filtering component described in, wherein the pump is described will be pumped into by the urea liquid of the heating and filtering component Nozzle, to spray urea droplets in the exhaust to engine, the integrating device includes housing, at least partly pacifies the nozzle The nozzle assembly being installed on loaded on the pump group part in the housing and at least part in the housing, wherein the housing includes Positioned at the upstream of the pump group part and the access road that is connected with the pump group part and positioned at the downstream of the pump group part and with The exit passageway of the pump group part connection, the access road and the urea liquid outlet, the exit passageway and institute State nozzle assembly connection；The pump group part includes the electrical-coil to transfer tube, and the nozzle assembly is included to drive spray The nozzle coil of mouth, wherein the electrical-coil is independently controlled respectively with the nozzle coil.
  10. 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.
  11. 11. after-treatment system component as claimed in claim 9, it is characterised in that：The integrating device includes and the outlet The pressure sensor of passage connection and the overflow element being connected between the exit passageway and the access road.
  12. 12. after-treatment system component as claimed in claim 9, it is characterised in that：The housing be equipped with the coolant into Mouth connector the first cooling duct being connected and the second cooling duct being connected with the cooling liquid outlet connector.
CN201721329605.0U 2017-02-08 2017-10-16 Heating and filtering component and after-treatment system component Active CN207363744U (en)

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CN108397265A (en) 2018-08-14
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