CN108194173A - Vehicle reducing agent storage box heating unit - Google Patents
Vehicle reducing agent storage box heating unit Download PDFInfo
- Publication number
- CN108194173A CN108194173A CN201810033243.3A CN201810033243A CN108194173A CN 108194173 A CN108194173 A CN 108194173A CN 201810033243 A CN201810033243 A CN 201810033243A CN 108194173 A CN108194173 A CN 108194173A
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- CN
- China
- Prior art keywords
- heating unit
- reducing agent
- heating
- temperature
- heat
- 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.)
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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
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0236—Industrial applications for vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The present invention relates to a kind of vehicle reducing agent storage box heating units, it is characterized in that, the heating unit is set as modular heating assembly, the modular heating assembly on heat-conducting substrate, the heat-conducting substrate including being provided with one or more heating unit, the heating unit further includes powered dispenser, babinet, external SCR control device fever control unit are drawn in powered dispenser one end integrated warming unit power distribution terminal connection heat-generating units conducting wire, one end.The technical solution overall construction design is ingenious, compact, the technical solution can flexibly change the shape and heating power of heating unit, adapt to the reducing agent storage box of variant size and shape specification, the program can effectively improve the whole heating efficiency of reducing agent storage box, make reducing agent thermally equivalent in storing box, reduce the temperature of single heat-generating units, improve lifetime of system, heat transfer efficiency is improved, accelerates heating rate.
Description
Technical field
The present invention relates to a kind of heating units, relate in particular to a kind of vehicle reducing agent storage box heating unit, belong to
In reducing agent storage box structure member technical field.
Background technology
For the nitrogen oxides pollution object discharge capacity of diesel engine, various countries have formulated high limitation requirement so that engine
Manufacturer begins to use SCR technologies to meet the limitation of engine nox emission.Selective Catalytic
Reduction, abbreviation SCR) this method by by a kind of reducing agent (be typically ammonia, SCR technology is to inject urea liquid
Into exhaust pipe, urea liquid hydrolysis generation ammonia) it injects in exhaust pipe so that nitrogen oxides is reduced；It is had in SCR technology
Consume reducing agent.The reducing agent is generally special urea（Adblue）, reducing agent stores by dedicated storage box, and storage box is general
It is made, is fixedly mounted on automobile chassis by HDPE plastic.Reducing agent solution by delivery pump by additive solution out of cavity body
It is pumped into SCR spraying systems, reducing agent can freeze at subzero 11 °.Cause SCR system that can not work；It is adopted in traditional technology
With heating element is arranged around reducing agent delivery pump, melt reducing agent, ensure SCR system work.Traditional reducing agent storage box
For cube or tank, be conducive to thermal cycle, heating element is arranged near pump, can be gradually heated up entirely storing using thermal convection current
Reducing agent in case.Car is irregular with reducing agent storage box shape at present, and Space Construction is difficult to form overall thermal convection circulation,
As only locally heated near reducing agent pump, can not melt the reducing agent of other positions in babinet, cause SCR system without
Method normal and continuous operation.It is required to carry out monoblock type heating to reducing agent storage box in new technique route at present.The prior art
In to whole heat protocol generally use 3 kinds of technology paths：Route 1：Hot-water line is introduced as grant number is CN204457964U
Patent, hot-water line coiling or screw arrangement are heated in storing box using engine coolant, and the program is needed on storing box
It first punches, in installation circulation line, there are the problems such as sealing, assembling, cost.Route 2：Using pacifying on positions multiple in babinet
Independent heating elements are filled, usually electrical heating is heated simultaneously, and the program requires to punch in advance on babinet, then again will heating
Element is welded on box house, and due to needing to weld multiple heating elements, welding scrappage is high, and manufacture cost is higher, due to more
The harness of a electric heating body is exposed, leads to difficult wiring.And car is with reducing agent storage box generally proximate to fuel tank or fuel oil
Pipeline, there are security risks for exposed harness such as failure of insulation.Route 3:The Chinese patent of Publication No. CN103250464A, will
Patch is on storage chamber interior wall, realizing whole heating, program entirety heating effect is good, calandria harness in flexible heater material
It is few, and be largely built in babinet, storing box tailored appearance, but flexible heater body or the built-in storage installed of heating element
Technique is more complicated in the fabrication process for case, and production cost is higher, while built-in harness penetrates babinet and needs to do corresponding sealing
Processing.
Invention content
The present invention is exactly for the technical problems in the prior art, to provide a kind of vehicle reducing agent and heated with storage box
Device, the technical solution overall construction design is ingenious, compact, which can flexibly change the shape of heating unit and add
Thermal power, adapts to the reducing agent storage box of variant size and shape specification, and the program can effectively improve reducing agent storage box
Whole heating efficiency, make reducing agent thermally equivalent in storing box, reduce the temperature of single heat-generating units, improve the system longevity
Life improves heat transfer efficiency, accelerates heating rate.
To achieve these goals, technical scheme is as follows, a kind of vehicle reducing agent storage box heating unit,
It is characterized in that, the heating unit is set as modular heating assembly, the modular heating assembly includes heat-conducting substrate, institute
It states and one or more heating unit is provided on heat-conducting substrate, the heating unit further includes powered dispenser, power supply distribution
Babinet, external SCR control device fever control are drawn in device one end integrated warming unit power distribution terminal connection heat-generating units conducting wire, one end
Unit.The technical solution reduces the workload of trepanning and welding on babinet, heat-generating units insertion storage box tank wall in structure
Interior, heating unit is embedded in cabinet shell simultaneously, only needs a quick coupling that the bulk supply to heating unit can be realized,
Without encapsulation process, effectively drop simplifies the wiring difficulty outside babinet, reduces assembly process and number of parts.Reduce the manufacture of assembly
Complexity reduces production cost and improves production efficiency.
As a modification of the present invention, in the modular heating assembly insertion storage tank wall.Modular heating unit
In assembly structure insertion storage tank wall, i.e., among heating unit assembly is fixed on tank wall in babinet injection molding process,
It is wrapped up by tank material, realization is isolated with reducing agent, to avoid corrosion of the reducing agent to heating unit.It avoids outside babinet simultaneously
Such as dust, corrosion of the steam to heating assembly improves lifetime of system.
As a modification of the present invention, the modular heating assembly further includes stent, and the stent adds for fixed
The current supply line of hot cell.The effect of stent is the conducting wire of fixed heating unit and each sensor, prevents in telescopiny
Middle lead location, which changes, causes babinet molding that defect occurs.
As a modification of the present invention, the conductor substrate be set as metal heat pipe, copper, aluminium or stainless steel or other
The good conductor of heat.
As a modification of the present invention, the heating unit is fixed on heat-conducting substrate by package or embedded mode
On.Temperature coefficient is positive PTC (temperature-sensitive adding thermal resistance) heating element (or mica, ceramics, silica gel flexible heater material etc.
Electrical heating elements.It is integral using being embedded in or combining closely by heat-conducting substrate package or by the way of welding with heat-conducting substrate, it realizes
The good conduction of heat, the size of heating unit, power, quantity can change with the change of different storage box heating requirements, no
The heat conducting frame of similar shape can also freely form different shapes to meet the requirements, common with sensor, harness, electrical connector
Isomorphism is into modular heating unit assembly of the present invention.
As a modification of the present invention, it is positive that temperature sensor or temperature coefficient are provided on the heat-conducting substrate
PTC element.
As a modification of the present invention, also there is temperature sensor input and output terminal on the powered dispenser, use
It is positive PTC element to connect temperature sensor 5 or temperature coefficient.
As a modification of the present invention, the heat-conducting substrate is set as W-shaped either Y shape or X-shaped or H-shaped.It is so-called
Heat-conducting substrate can also use a variety of patterns such as W-shaped Y shape X-shaped H-shaped to adapt to different storage box shapes, the shape of heat-conducting substrate
Without wishing and above-mentioned form can need to generate different shapes with storage box shape and heating.
Temperature curve control method, which is characterized in that the step is as follows, according to the structure and reducing agent of specific storage bin
The installation site of delivery pump and other critical components according to storage box and the structure determination of heat-conducting substrate, is installed several temperature and is passed
Sensor, to measure the temperature of reducing agent temperature and the heating unit in storage box, the method for measuring reducing agent temperature can
Be it is direct measure or measure indirectly, i.e. temperature sensor penetrates that storage tank wall stretches into case in-vivo measurement or temperature sensor is embedding
Enter babinet, conversion obtains babinet inner additive temperature indirectly by measuring spin manifold temperature.Sensor passes through temperature signal described
Powered dispenser feeds back to heating controller, and heating controller rationally adjusts the electricity of each heating unit according to temperature information
Size is flowed, the high region of temperature stops heating, and the low region of temperature continues to heat, and realizes the quick heating to key position, together
When limitation maximum heating temperature the service life of heating unit and tank material is avoided to melt to improve；Specifically used two kinds of adjustment
Method：1）Temperature sensor feeds back the temperature of heating unit or the temperature of additive to controller.It is set in advance inside controller
Determine threshold temperature therewith to compare, using the size of PID control heating unit electric current come the temperature rise of soft readjustment heating unit
Speed particularly can drive heating unit to heat in environment temperature and the very big preset temperature temperature difference with larger current
Unit is rapidly heated, and changing size of current when reaching or close to desired temperature is stably held in the temperature of additive
Near preset temperature.2）Or temperature coefficient is connected in series to for positive PTC element in heating unit, the characteristic of ptc material in itself
For temperature it is relatively low when resistance it is small, high current is allowed to pass through, resistance becomes larger after temperature raising, plays the effect of the steady temperature of current limliting.It is above-mentioned
The parameter or the parameter of PTC element that PID is adjusted in two methods are obtained by specific experiment.
Relative to the prior art, advantages of the present invention is as follows：1）Overall construction design of the present invention is ingenious, compact-sized, real
It is strong with property；The technical solution effectively improves the whole heating efficiency of reducing agent storage box, make reducing agent in storing box uniformly by
Heat reduces the temperature of single heat-generating units, improves lifetime of system, improves heat transfer efficiency, accelerates heating rate；2）The technical solution
Reduce the workload of trepanning and welding on babinet in structure, heat-generating units are embedded in storage box tank wall, calandria harness
It is embedded in cabinet shell simultaneously, only needs a quick coupling that the bulk supply to heating unit can be realized, at sealing
Reason, effectively drop simplify the wiring difficulty outside babinet, reduce assembly process and number of parts, reduce the manufacture complexity of assembly, drop
Low production cost and raising production efficiency；3）Modular heating unit assembly structure insertion is stored in tank wall, i.e. heating unit
Among assembly is fixed on tank wall in babinet injection molding process, to be wrapped up by tank material, realization is isolated with reducing agent,
To avoid corrosion of the reducing agent to heating unit, while avoid outside babinet as dust, corrosion of the steam to heating assembly improve system
It unites the service life；4）In the technical solution, each independent heating unit harness is fixed on heat conduction structure base board, is finally aggregated into power supply
On distributor, babinet is drawn in powered dispenser one end integrated warming unit power distribution terminal connection heat-generating units conducting wire, one end, outside
Connect SCR control device fever control unit.The external connector of special outlet box is standard automobile electric appliance quick plug, is had good
Reliability and higher degree of protection.Simplify harness quantity simultaneously, be conducive to automobile chassis arrangement；5）The technical solution can be with
The frozen problem of extremely frigid zones diesel oil passenger car emission control reducing agent is effectively solved, suitable for the storage of various sizes and shape
Case does not influence the boundary condition between storage bin and vehicle body, and overall power is effectively reduced while heating effect is ensured, with showing
Having technology heat protocol to compare has the advantages of heating and thermal insulation effect is good, low in energy consumption, manufacture is at low cost, and reliability is high.
Description of the drawings
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is embedded in storage box wall construction schematic diagram for heating assembly；
Fig. 3 is embedded electrical connector structure diagram；
Fig. 4 controls process schematic for temperature curve；
Fig. 5 controls process schematic for another temperature curve；
Fig. 6 is another example structure schematic diagram；
In figure：1st, heat conduction base version, 2, current supply line, 3, powered dispenser, 4, heating unit, 5, temperature sensor, 6, stent, 7,
Storage box.
Specific embodiment
In order to deepen the understanding of the present invention and recognize, the present invention is made with reference to the accompanying drawings and detailed description into one
Step description and introduction.
Embodiment 1：Referring to Fig. 1, a kind of vehicle reducing agent storage box heating unit, the heating unit is set as module
Change heating assembly, the modular heating assembly on heat-conducting substrate 1, the heat-conducting substrate 1 including being provided with one or more
Heating unit 4, the heating unit further include powered dispenser 3, and 3 one end integrated warming unit power distribution terminal of powered dispenser connects
Babinet, external SCR control device fever control unit are drawn in sending and receiving hot cell conducting wire, one end.The technical solution is reduced in structure
The workload of trepanning and welding on babinet, heat-generating units are embedded in storage box tank wall, and heating unit is embedded simultaneously outside the enclosure
In shell, only need a quick coupling that the bulk supply to heating unit can be realized, without encapsulation process, effectively drop simplifies babinet
Outer wiring difficulty reduces assembly process and number of parts.The manufacture complexity of assembly is reduced, production cost is reduced and improves and give birth to
Produce efficiency.
Embodiment 2：Referring to Fig. 1, Fig. 2, as a modification of the present invention, the modular heating assembly is embedded in storage box
In 7 walls.In modular heating unit assembly structure insertion storage tank wall, i.e., heating unit assembly is in babinet injection molding process
It is fixed among tank wall, is wrapped up by tank material, realization is isolated with reducing agent, to avoid reducing agent to heating unit
Corrosion.It avoids simultaneously outside babinet as dust, corrosion of the steam to heating assembly improve lifetime of system.In reduction of the present invention
In agent storage box injection molding process, so-called modular heating assembly is fixed on by tooling in storage box forming cavity, babinet into
Embedded cabinet wall during type, realizes integral installation molding, heats the substrate, heat-generating units, all parts such as harness are by case
Wall reliably wraps, and sealing, while 3 standard electrical connector of the electrical distributor is located at outside storage box, is used for and auto electric
Control system is connected.Remaining structure and advantage are identical with embodiment 1.
Embodiment 3：Referring to Fig. 1, as a modification of the present invention, the modular heating assembly further includes stent 6, institute
Stent is stated for fixing the current supply line of heating unit, the effect of stent is to fix leading for heating unit and each sensor
Line, lead location is prevented in telescopiny, which to change, causes babinet molding that defect occurs.The conductor substrate 1 is set as gold
Belong to heat pipe, copper, aluminium or stainless steel or the good conductor of other heat.Remaining structure and advantage are identical with embodiment 1.
Embodiment 4：Referring to Fig. 1, Fig. 2, as a modification of the present invention, the heating unit 4 passes through package or embedding
Enter mode to be fixed on heat-conducting substrate.Temperature coefficient is positive PTC (temperature-sensitive adding thermal resistance) heating element (or mica, pottery
The electrical heating elements such as porcelain, silica gel flexible heater material.Using it is embedded or by the way of by heat-conducting substrate being wrapped up or welded with heat conduction base
Plate is combined closely integral, realizes the good conduction of heat, the size of heating unit, power, quantity can add with different storage boxes
The change of heat request and change, heat conducting frame of different shapes can also freely form different shapes to meet the requirements, with
Sensor, harness, electrical connector collectively form modular heating unit assembly of the present invention.The arrangement of heating unit 4 is close
Degree is different, is usually disposed about a fairly large number of heating list in reducing agent delivery pump position, liquid level sensor and mass sensor
Member 4 or the larger heating unit of heating power, to ensure that above-mentioned key position speed can melt the additive freezed faster.
In Fig. 2, the heat-conducting substrate 1 or modular heating unit and the insertion of temperature sensor 5 are installed in storage tank wall 7.In tank wall
The heater of embedded one or a few heat-conducting substrate composition, heater completely cut off with additive solution and external environment, can keep away
Exempt from heater to be corroded, heating is realized to the additive solution in babinet using heater fever and melt.Remaining structure and excellent
Point is identical with embodiment 1.
Embodiment 5：Referring to Fig. 1, as a modification of the present invention, temperature sensor 5 is provided on the heat-conducting substrate 1
Or temperature coefficient is positive PTC element, 3 also have temperature sensor input and output terminal on the powered dispenser, are used for
It is positive PTC element to connect temperature sensor 5 or temperature coefficient.Vehicle control syetem as shown in Figure 3 passes through powered dispenser 3
Standard automobile electrical connector（USCSR20）It powers to modular heating unit assembly.Special, also have on powered dispenser
Temperature sensor input and output terminal, for connecting temperature sensor 5.Remaining structure and advantage are identical with embodiment 1.
Embodiment 6：Referring to Fig. 1, Fig. 3, as a modification of the present invention, the heat-conducting substrate is set as W-shaped or Y shape
Either X-shaped or H-shaped.So-called heat-conducting substrate can also use a variety of patterns such as W-shaped Y shape X-shaped H-shaped to adapt to different storage boxes
Shape, shape Without wishing and the above-mentioned form of heat-conducting substrate can need to generate different shapes with storage box shape and heating
Shape.Heat-conducting substrate can match storing box according to true form with different shape and size are dimensioned to.Also may be used simultaneously
To change the installation site of each heating unit 4, density and the style of heat-conducting substrate according to demand for heat.Remaining structure and advantage
It is identical with embodiment 1.
Embodiment 7：Referring to Fig. 1, Fig. 6, as a modification of the present invention, heating unit 4 is uniformly mounted on the heat conduction
On substrate 1, the heating unit basic module is formed, which can be the large area heating unit of a monoblock, also may be used
To be polylith small area heating unit, polylith small area heating unit can splice, i.e., according to practical heating power and storage box
Structure increases or decreases the splicing quantity of modular heating unit, you can changes heating power and heating surface (area) (HS is different to adapt to
Demand.Remaining structure and advantage are identical with embodiment 1.
Embodiment 8：The heating strategy heated referring to Fig. 1, Fig. 6, the present invention using alternating temperature：1）It is carried out when automobile just starts
Additive pump is melted in high-power quick heating as early as possible, and pipeline waits the additive Frozen Body around critical components, ensures SCR work
Start time requirement；2）After SCR system normal work, heating power is suitably reduced, excessively high heating temperature is avoided to influence also
The quality of former agent, while reduce the power requirement to automobile power supply system；3）When the reducing agent in storage box melts and reaches conjunction
After managing set temperature, system enters holding mode, and the liquid condition of reducing agent is maintained with relatively low heating power；4）When environment temperature
When degree can be with the liquid condition of Autonomous maintenance additive, system can be closed thoroughly, to extend system service life.
Temperature curve control method, the step is as follows, according to the structure of specific storage bin and reducing agent delivery pump and its
The installation site of its critical component installs several temperature sensors, to measure reducing agent temperature in storage box and it is described plus
The temperature of hot cell, the method for measuring reducing agent temperature can be direct measurements or measure indirectly that is, temperature sensor, which penetrates, deposits
Tank wall stretches into case in-vivo measurement or temperature sensor insertion babinet, and by measuring spin manifold temperature, conversion is obtained in babinet indirectly
Additive temperature.Temperature signal is fed back to heating controller by sensor by the powered dispenser 3, heating controller according to
Temperature information rationally adjusts the size of current of each heating unit, realizes the quick heating to key position, limits simultaneously
Maximum heating temperature the service life of heating unit and avoids tank material from melting to improve.In specific example as shown in figure 4,
The maximum power that automotive electrical system can supply heating system is 150W, and in heating initial period, heating controller passes through electricity
100W therein can preferentially be distributed to the position of heating priority by the control of stream size so that reducing agent delivery pump, level sensing
The reducing agent of the positions such as device preferentially melts, as set preferential heating position minimum standard temperature in the example as 5 DEG C, then when the position
It puts heating controller after temperature reaches 5 DEG C and the region heating power is reduced to 50w, non-remaining position of dispensing storing box of dump power
The heating unit put, when bulk temperature gradually rises, after the reducing agent solution in storage box largely melts, control system according to
Each temperature sensor signal continues to reduce heating power, such as low position 20W, melts position 10W, realizes heat insulation effect, together
When reduce power termination to automotive electrical system, realize energy saving.The advantageous embodiments be active temperature curve controlled, temperature
Control targe is required from car manufactures, in this example the setting source of the distribution principle of heating power and temperature threshold
In the defrosting experimental data of the reducing agent storage box, specific general introduction is not done in the present invention.
Another method of temperature curve control, reduces the installation number of temperature sensor or completely dispenses with temperature sensor,
By the use of temperature characterisitic for ptc material as heating unit heats power limitation condition, shown in Fig. 5, under low-temperature condition, positioned at excellent
The PTC temperature characterisitics of first heating region position are different from the temperature characterisitic of non-preferential heating location PTC, heating initial period,
Due to the difference of above-mentioned parameter, the resistance change rate for causing different heating region is different, and the resistance value of preferential heating region is small
In secondary regions, it is made to obtain more heating power, realizes the preferential heating to key position.When added hot spot temperature reaches
During to required value, the resistance value of each heating part reaches balance, realizes the entirety heating to reducing agent.Since heating unit makes
PTC temperatures coefficient is just, so requirement of the system to power reduces automatically when bulk temperature rises, realize automatic heat preserving and
Reduce the target of energy consumption.Special, same temperature coefficient element can also be selected in the PTC of different location to reduce system choosing
The complexity of type, by the way that different current-limiting resistance realizes the power distribution varied with temperature to change in parallel or series from PTC.
The advantageous embodiments are passive control program, the selection of PTC temperatures coefficient or current-limiting resistance and the matching of system heating curves
Detailed overview is not done from a large amount of infrastest data present invention.
Temperature curve control method of the present invention can optimize the power consumption melted in additive and insulating process significantly
Control, avoid excessively heating, improve the efficiency of heating surface, save energy consumption, the power source of diesel vehicle electrical system in engine, so
The present invention also contributes to saving fuel oil consumption simultaneously.
Embodiment 2,3,4,5,6,7 technical characteristics can also be combined to form new implementation by the present invention with embodiment 1
Mode.
It should be noted that above-described embodiment is only presently preferred embodiments of the present invention, there is no be used for limiting the present invention's
Protection domain, protection scope of the present invention are subject to claims.
Claims (10)
1. a kind of vehicle reducing agent storage box heating unit, which is characterized in that the heating unit is set as modular heating
Assembly.
2. vehicle reducing agent storage box heating unit according to claim 1, which is characterized in that the modular heating
Including being provided with one or more heating unit on heat-conducting substrate, the heat-conducting substrate, the heating unit further includes assembly
Babinet is drawn in powered dispenser, powered dispenser one end integrated warming unit power distribution terminal connection heat-generating units conducting wire, one end, outside
Connect SCR control device fever control unit.
3. vehicle reducing agent storage box heating unit according to claim 2, which is characterized in that the modularization adds
In hot assembly insertion storage tank wall.
4. vehicle reducing agent storage box heating unit according to claim 3, which is characterized in that the modularization adds
Hot assembly further includes stent, and the stent is used to fix the current supply line of heating unit.
5. vehicle reducing agent storage box heating unit according to claim 3 or 4, which is characterized in that the conductor base
Plate is set as metal heat pipe, copper, aluminium or stainless steel or the good conductor of other heat.
6. vehicle reducing agent storage box heating unit according to claim 5, which is characterized in that the heating unit
It is fixed on heat-conducting substrate by package or embedded mode.
7. vehicle reducing agent storage box heating unit according to claim 6, which is characterized in that the heat-conducting substrate
On to be provided with temperature sensor or temperature coefficient be positive PTC element.
8. the vehicle reducing agent storage box heating unit described according to claim 6 or 7, which is characterized in that the power supply point
Also there is temperature sensor input and output terminal, for connecting temperature sensor 5 or temperature coefficient as positive PTC members on orchestration
Part.
9. vehicle reducing agent storage box heating unit according to claim 8, which is characterized in that the heat-conducting substrate
It is set as W-shaped either Y shape or X-shaped or H-shaped.
10. temperature curve control method, which is characterized in that the step is as follows, according to the structure and reducing agent of specific storage bin
The installation site of delivery pump and other critical components installs several temperature sensors, to measure the reducing agent temperature in storage box
The temperature of degree and the heating unit, the method for measuring reducing agent temperature can be direct measurements or measure indirectly that is, temperature passes
Sensor penetrates storage tank wall and stretches into case in-vivo measurement or temperature sensor insertion babinet, is converted indirectly by measuring spin manifold temperature
Obtain babinet inner additive temperature；Temperature signal is fed back to heating controller by sensor by the powered dispenser, heating
Controller rationally adjusts the size of current of each heating unit according to temperature information, realizes and the quick of key position is added
Heat, while maximum heating temperature is limited to improve the service life of heating unit and tank material is avoided to melt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810033243.3A CN108194173A (en) | 2018-01-14 | 2018-01-14 | Vehicle reducing agent storage box heating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810033243.3A CN108194173A (en) | 2018-01-14 | 2018-01-14 | Vehicle reducing agent storage box heating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194173A true CN108194173A (en) | 2018-06-22 |
Family
ID=62589086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810033243.3A Pending CN108194173A (en) | 2018-01-14 | 2018-01-14 | Vehicle reducing agent storage box heating unit |
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| CN (1) | CN108194173A (en) |
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| CN112629611A (en) * | 2020-12-28 | 2021-04-09 | 上海空间推进研究所 | Unbalanced discharge measurement device and method for high-orbit satellite orbital transfer parallel storage tank |
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