CN208734408U - A kind of vehicle-mounted DPF on-line regeneration system - Google Patents
A kind of vehicle-mounted DPF on-line regeneration system Download PDFInfo
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- CN208734408U CN208734408U CN201820855451.7U CN201820855451U CN208734408U CN 208734408 U CN208734408 U CN 208734408U CN 201820855451 U CN201820855451 U CN 201820855451U CN 208734408 U CN208734408 U CN 208734408U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The utility model provides a vehicle-mounted DPF on-line regeneration system, which mainly includes after-treatment system, NTP generation system, NTP generator gas handling system, NTP generator cooling system, power supplier, diesel engine system and control module.The NTP generates system and provides air by gas handling system, by cooling system control system temperature, is generated using the discharge module of internal system and passes through NTP nozzle to after-treatment system offer NTP active material.The power supplier provides different voltage for each discharge module in NTP generation system.The control module passes through various kinds of sensors and pump control whole system.The diesel engine system can couple with NTP system and after-treatment system in the regenerative mode, realize the control and optimization of vehicle-mounted DPF on-line regeneration system.This patent can effectively improve NTP and generate system effectiveness and dpf regeneration efficiency, can regenerate to DPF in engine operation process, more closing to reality application.
Description
Technical field
The utility model belongs to diesel engine vent gas post-processing technology field, and in particular, to a kind of using NTP technology
DPF on-line regeneration system.
Background technique
As a kind of internal combustion engine for being different from gasoline engine, engine fuel economy is more preferable, and the thermal efficiency is high, is widely used in work
Each corner of industry, agricultural and daily life.However, the huge ownership of diesel vehicle also brings many environmental problems, row
Put carbon monoxide (CO) in object, hydrocarbon (HC), nitrogen oxides (NOx) and particulate matter (Particulate matter, PM) meeting
To environment and artificial at certain harm.Organic soluble ingredient and polycyclic aromatic hydrocarbons (PAH) in PM have certain carcinogenicity, and
And the sucking of PM will increase human lung mechanicalness it is compound, cause damages to human heart, respiratory system.NOx then causes
The principal element of acid rain and photochemical fog, and human lung can be entered by breathing, with water function generate nitrous acid with
Nitric acid generates strong impulse and corrosiveness to lung tissue and causes lung to increase the permeability of capillary and alveolar wall
Oedema.Therefore, imperative to the control of diesel emissions.
Diesel particulate trap (Diesel particulate filter, DPF) is that current reduction PM is most common
One of outside purification technology, to the arresting efficiency of PM up to 90% or more.But during DPF trapping, PM can be gathered largely,
Cause DPF to block, and then increase exhaust back pressure, influences engine normal operation.Therefore, the practicability to improve DPF, it is necessary to
DPF is regenerated in due course.
Lower temperature plasma technology (Non-thermal plasma, NTP) is a kind of novel low-emission technology.NTP
Generator generates O by carrying out electrion to air3、NO2Etc. strong oxidizing properties active material.Existing research shows NTP
Active material, which is passed through progress regenerated offline in DPF, preferable effect.However, exhaust reduces in working process of diesel engine
The concentration of NTP active material causes active material to react with the carbon distribution deposited in DPF simultaneously because gas flow rates are very fast
It is insufficient, weaken DPF on-line regeneration effect.The NTP generator designed at present be suitable for more air cleaning, low temperature sterilization and
The fields such as static simulation gas purification test.Patent application CN106437948A devises a kind of dpf regeneration system and controlling party
Method carries out online alternately regeneration to double DPF systems, and use on-line regeneration using NTP spraying system and thermo-electric converting device
The regeneration strategy combined with regenerated offline improves NTP utilization rate and dpf regeneration efficiency when on-line regeneration.But it is regenerated
Process only meets the case where bypassing exhaust, cannot achieve full stream on-line regeneration；It is larger using double DPF structure occupied spaces.In reality
In the application of border, the problems such as diesel engine on-line regeneration DPF and NTP generator system optimizes how is solved, and then in diesel engine DPF
The technology is applied successfully in regeneration field, also needs further to study.
Utility model content
In response to the deficiencies in the existing technology, the utility model provides a kind of vehicle-mounted DPF on-line regeneration system and its control
Method processed, using based on dielectric barrier discharge coaxial multistage NTP generate system, by coupling NTP generator, diesel engine and after
Processing system simultaneously controls and optimizes dpf regeneration system, can effectively realize diesel engine DPF on-line regeneration.
The utility model is to realize above-mentioned technical purpose by following technological means.
A kind of vehicle-mounted DPF on-line regeneration system, which is characterized in that generate system, air inlet system including after-treatment system, NTP
System, cooling system, power supplier, diesel engine system and control module,
The after-treatment system includes the DPF being mounted on diesel engine system exhaust pipe, and there are NTP nozzle and in the front end DPF
One pressure sensor, rear end are second pressure sensor, and electric heating layer is nested with outside DPF, is passed above DPF equipped with dpf temperature
Sensor feeds back to control module for detecting temperature when dpf regeneration, and by measured temperature；
Power supplier generates system for NTP and provides power supply, and the NTP generates system by multiple NTP discharge modules, often
One NTP discharge module includes high-field electrode, low-field electrode and quartz ampoule, and high-field electrode is nested in the outside of quartz ampoule, high
Electrode exterior is pressed to coat insulating heat-conductive silica gel, there are gap works on the inside of quartz ampoule and between quartz ampoule for low-field electrode setting
For dielectric barrier discharge area, internal layer, the outer layer of each discharge module are respectively equipped with inner layer sleeve, outer layer sleeve；
Multiple NTP discharge module nested arrangements, are provided with low-field electrode water cooling between the low-field electrode and inner layer sleeve
Channel is provided with high-field electrode water-cooling channel, high-field electrode water-cooling channel, low-field electrode water between high-field electrode and outer layer sleeve
Cold passage is connected with cooling system；
Dielectric barrier discharge area between the low-field electrode and quartz ampoule of each NTP discharge module is that the first air is logical
Road, the gap between the outer layer sleeve and inner layer sleeve of the NTP discharge module of internal layer is the second air flow channel, and is located at phase
First air duct of adjacent two layers of NTP discharge module is connected to by the second air flow channel between two layers of NTP discharge module, and
Air flow channel is S-type；The air inlet of the air flow channel is connected with gas handling system, gas outlet is connected with DPF；
The high-field electrode of each NTP discharge module is connected by a conducting wire with power supplier, and low-field electrode is equal
Independent grounding, the voltage of multiple NTP discharge modules is different, voltage is successively increased by internal layer outer layers；
First pressure sensor, second pressure sensor, dpf temperature sensor are connected with control module.
Further, the gas handling system includes NTP air cleaner, mass flow sensor, air feed pump and air inlet pipe,
The NTP air cleaner is arranged in the air inlet side of air feed pump, the air inlet pipe be located at the outlet side of air feed pump and with
The air flow channel that NTP generates system is connected, and the mass flow sensor is located between NTP air cleaner and air feed pump；Institute
State mass flow sensor, air feed pump is connected with control module；
The air feed pump receives the signal control of control module, forms closed-loop control system.
Further, cooling system includes NTP system water tank, the water pump, radiator being sequentially communicated, the water outlet of radiator
It is connected by cooling water pipe with the NTP water cooling runner for generating system, fan is set at radiator, also sets up water temperature in cooling system
Sensor,
Water temperature sensor, fan are connected with control module, for monitoring cooling water temperature and by the temperature of surveyed cooling water
Degree feeds back to control module, and the size by controlling rotation speed of the fan is cooled down to by the cooling water of radiator, generates NTP
The temperature of system is maintained in preferably range.
Further, dpf temperature sensor is housed, for detecting temperature when dpf regeneration, and by institute's thermometric above DPF
Degree feeds back to control module；Control module controls dpf regeneration temperature by control electric heating layer.
Further, the material of DPF is honeycomb ceramic filter, and hole density is 100cpsi, diameter 144mm, and bus is long
152mm。
Further, the discharging gap in the dielectric barrier discharge area between low-field electrode and quartz ampoule is 2mm.
Further, the adjacent high-field electrode water-cooling channel, low-field electrode water-cooling channel successively penetrate through, and form S type
Cooling-water duct.
Further, the outer layer sleeve outside outermost NTP discharge module is equipped with water drainage part, is located at most interior
Inner layer sleeve one end end of the NTP discharge module of layer is equipped with water inlet member, and the water drainage part, water inlet member are and cooling system
System is connected；
Inner layer sleeve other end end positioned at the NTP discharge module of innermost layer is equipped with air inlet, is located at outermost NTP
Quartz ampoule outside discharge module is equipped with gas outlet, and the air inlet, gas outlet are connected with gas handling system；
The water inlet member is only connected by being located at the inner layer sleeve of the NTP discharge module of innermost layer with cooling-water duct
Logical, the air inlet is only connected by being located at the inner layer sleeve of the NTP discharge module of innermost layer with air flow channel.
Further, power supplier includes vehicle power supply, inversion boosting device and voltage controller, the vehicle power supply
As device general supply, voltage provided by vehicle power supply is handled through inversion boosting device, is increased to the mould that discharges in NTP generation system
High voltage needed for block；Different voltage signals is passed to inversion boosting device by voltage controller by control module, makes inversion
Booster provides different voltage to the high-field electrode in every level-one NTP discharge module.
The control method of the vehicle-mounted DPF on-line regeneration system, which comprises the following steps:
Step 1: rating test is carried out to after-treatment system, determines that both ends are most when DPF can be worked normally under different operating conditions
The target differential pressure at the both ends DPF when big pressure difference and regeneration are completed completes pressure difference respectively as regeneration initial pressure difference value, regeneration；
By testing the optimal reaction temperature range for determining NTP active material and DPF internal particle as regeneration temperature section；It will regeneration
Initial pressure difference value Pstart, regeneration complete pressure difference Pover, regeneration temperature section [Tmin,Tmax] deposit control module；
Step 2: generating system, gas handling system, cooling system and power supplier to NTP and carry out combined calibrating test,
Determine the maximum air flow amount Q that can bear in NTP generator2With minimum discharge Q needed for regeneration1In range in NTP generator
The optimal discharge voltage section of every grade of discharge module and the ceiling temperature T of cooling water0, it is deposited into control module；
Step 3: by DPF forefront pressure sensor and the rear end the DPF both ends pressure sensor monitoring DPF pressure difference P, with control
The regeneration initial pressure difference value P prestored in molding blockstartIt is compared, to judge whether DPF needs to regenerate；
Step 4: when the engine is running, if monitor that the both ends DPF pressure difference is greater than regeneration initial pressure difference value, mould is controlled
Block, which sends signal to NTP generator cooling system, NTP generator gas handling system and power supplier, makes system starts control
Diesel engine processed enters regeneration mode；In entire regenerative process:
The air mass flow Q of NTP gas handling system is fed back to control module by mass flow sensor, as Q < Q1, controls mould
Block improves gas supply revolution speed and increases the discharge voltage of high-field electrode, reduces gas supply revolution speed if Q > Q2 and reduces high-voltage electricity
The discharge voltage of pole；
Control module receives feedback information water temperature T from water temperature sensor, if cooling water real time temperature TwGreater than prior
It is prestored into obtain cooling water temperature T0Then opening fan is to flow through the cooling water of radiator to be cooled down；Finally sprayed to after-treatment system
Enter NTP active material, carries out on-line regeneration；
Step 5: the temperature sensor real-time monitoring regeneration temperature T above DPFdIf Td>Tmax, take increase injection advance
The engine control strategy at angle reduces delivery temperature, carries out under the atmosphere of exhaust due to entirely reacting, and then reduces reaction temperature
Degree；Work as Td<TminWhen, the electric heating layer that is nested on DPF is opened, is maintained at reaction zone temperature within the scope of suitable temperature；
Step 6: if the both ends DPF pressure difference P > PoverRate-determining steps five are then returned, continues to execute and follows bad step；When P <
Pover, show that regeneration has been completed, control module closes NTP and generates system, NTP generator gas handling system, the cooling of NTP generator
System and power supplier.
DPF is regenerated the utility model has the beneficial effects that generating the NTP active material that system generates using NTP, then
Raw required temperature is far below PM initiation temperature, can be regenerated at a lower temperature；Interlaced arrangement in NTP generation system
NTP discharge module can slow down the flowing velocity of reaction gas, stabilize gas pressure, and it is stagnant in reaction zone to extend gas
Stay the time；The flash-over characteristic of each layer of discharge module mesohigh electrode can be controlled individually in NTP generator, improve electric discharge effect
Rate；It can be cooled off after reactant gas discharge, inhibit the pyrolysis of NTP active material；NTP generates system and uses independent cooling system
System, can be accurately controlled temperature of reactor；Using on-line regeneration, DPF can be regenerated in engine operation process,
More closing to reality application；Control module can accurately control engine operating parameter after diesel engine capable of being made to enter regeneration mode.
Detailed description of the invention
Fig. 1 is vehicle-mounted DPF on-line regeneration system schematic described in the utility model.
Fig. 2 is after-treatment system structural schematic diagram.
(a) is that NTP generates system structure diagram in Fig. 3, (b) is NTP discharge module local structural graph.
Fig. 4 is air intake system structure schematic diagram.
Fig. 5 is schematic diagram of cooling system structure.
Fig. 6 is power supplier structural schematic diagram.
Fig. 7 is diesel engine system system structural schematic diagram.
Fig. 8 is the flow chart that control module executes illustrative steps.
In figure:
100- after-treatment system, 101- first pressure sensor, 102- electric heating layer, 103-DPF temperature sensor, 104-
DPF, 105- second pressure sensor, 106-NTP nozzle；200-NTP generates system, 201- air inlet, 202- level-one high-voltage electricity
Polar conductor, 203- second level high-field electrode conducting wire, 204- three-level high-field electrode conducting wire, 205- high-field electrode, 206- quartz ampoule, 207-
Dielectric barrier discharge area, 208- low-field electrode, 209- water drainage part, the gas outlet 210-, 211- low-field electrode earth lead, 212-
Water inlet member, 213- cooling-water duct, 214- high-field electrode water-cooling channel, 215- low-field electrode water-cooling channel, 216- internal layer set
Pipe, 217- outer layer sleeve, 218- shell, 219- baffle；300- gas handling system, 301-NTP air cleaner, 302- mass flow
Sensor, 303- air feed pump, 304- air inlet pipe；400- cooling system, 401-NTP system water tank, 402- water pump, 403- heat dissipation
Device, 404- cooling water pipe, 405- fan, 406- water temperature sensor；500- power supplier, 501- vehicle power supply, 502- are inverse
Become booster, 503- voltage controller；600- diesel engine system, 601- air filter for diesel engine, 602- diesel oil device air intake duct,
603- diesel engine, 604- Diesel Engine Exhaust Pipe, 605- diesel oil device intake flow sensor；700- control module.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is further described the utility model, but the guarantor of the utility model
Shield range is not limited to this.
As shown in Figure 1, vehicle-mounted dpf regeneration system described in the utility model includes: after-treatment system 100, NTP generation system
System 200, gas handling system 300, cooling system 400, power supplier 500, diesel engine system 600 and control module 700.It is described
After-treatment system 100 is connected with diesel engine system 600 by Diesel Engine Exhaust Pipe 604, and NTP generates system 200 and passes through NTP nozzle
106 provide NTP active material to after-treatment system 100.Gas handling system 300 generates system 200 to NTP by air inlet pipe 304 and mentions
For reaction gas, cooling system 400 generates the offer cooling water of system 200 to NTP using cooling water pipe 404 and is cooled down.Power supply supplies
Each discharge module in system 200 is generated for NTP to device 500, and different voltage is provided.Control module 700 passes through various kinds of sensors
Whole system is controlled with pump.
As shown in Fig. 2, the after-treatment system 100 includes being mounted on 600 exhaust pipe 604 of diesel engine system
It is second pressure sensor 105 that, which there are NTP nozzle 106 and first pressure sensor 101, rear end in the front end DPF104, DPF104,.Regeneration
When NTP active material is passed through by NTP nozzle 106.The material that DPF104 is used is cordierite, using honeycomb ceramic filter, hole
Density is 100cpsi, diameter 144mm, the long 152mm of bus.Electric heating layer 102, the top DPF104 are nested with outside DPF104
Equipped with dpf temperature sensor 103, first pressure sensor 101, second pressure sensor 105, dpf temperature sensor 103 with
Control module 700 is connected.Dpf temperature sensor 103 is used to detect temperature when dpf regeneration, and measured temperature is fed back to control
Molding block 700 makes dpf regeneration temperature be maintained at best with this by the current control heating power of control electric heating layer 102
Value, to keep regenerative process more stable.Control module 700 is obtained by first pressure sensor 101, second pressure sensor 105
Obtain the pressure difference signal of the rear and front end DPF104.
Power supplier 500 is that NTP generation system 200 provides power supply, and the NTP generates system 200 and put by multiple NTP
Electric module, as shown in figure 3, each NTP discharge module includes high-field electrode 205, low-field electrode 208 and quartz ampoule 206, height
Piezoelectricity pole 205 is nested in the outside of quartz ampoule 206, coats insulating heat-conductive silica gel outside high-field electrode 205, can be in Cooling Process
It takes away heat and prevents from leaking electricity.The setting of low-field electrode 208 is in 206 inside of quartz ampoule and there are gap works between quartz ampoule 206
For dielectric barrier discharge area 207, internal layer, the outer layer of each discharge module are respectively equipped with inner layer sleeve 216, outer layer sleeve 217.It is low
The discharging gap in the dielectric barrier discharge area 207 between piezoelectricity pole 208 and quartz ampoule 206 is 2mm.
Multiple NTP discharge module nested arrangements, are placed in inside shell 218, and the shell 218 is polytetrafluoroethylene (PTFE) bonding
Full-closed structure.Reaction gas is every to pass through level-one region of discharge, and the concentration of NTP active material increases, and reaction gas gas is reduced.Due to
There is charged particle in active material, and then improve the charged particle concentration of gas, reaction gas is made to be easier that exoelectrical reaction occurs,
Therefore the high-field electrode discharge voltage of the high progression module of setting is lower than harmonic series module, is conducive to the generation for improving NTP active material
The discharging efficiency of rate and high-field electrode at different levels.
Low-field electrode water-cooling channel 215, high-field electrode 205 are provided between the low-field electrode 208 and inner layer sleeve 216
High-field electrode water-cooling channel 214 is provided between outer layer sleeve 217, high-field electrode water-cooling channel 214, low-field electrode water cooling are logical
Road 215 is connected with cooling system 400.In the present embodiment, the adjacent high-field electrode water-cooling channel 214, low-field electrode
Water-cooling channel 215 successively penetrates through, and forms S type cooling-water duct 213.Cooling water is flowed into NTP generator by water inlet member 212
Portion cools down each component models, finally flows out from water drainage part 209 by each layer cooling-water duct 213.This structure makes cold
But water can directly contact high-field electrode 205 and low-field electrode 208, enhance cooling effect.
Dielectric barrier discharge area 207 between the low-field electrode 208 and quartz ampoule 206 of each NTP discharge module is
First air duct, the gap between the outer layer sleeve 217 and inner layer sleeve 216 of the NTP discharge module of internal layer are second
Air flow channel, and be located at the first air duct of adjacent two layers NTP discharge module and pass through the between two layers of NTP discharge module
The connection of two air flow channels, and air flow channel is S-type；The air inlet of the air flow channel is connected with gas handling system 300, gas outlet with
DPF104 is connected.Air flow channel is S-type, and reaction gas can be continuously through each layer dielectric barrier discharge region, and reaction gas
Flow direction can repeatedly be changed back and forth in flow process, slow down the flowing velocity of reaction gas, reaction gas is extended and occurring
Reaction time in device increases the production quantity of NTP.It is the reaction gas flowing space between inside and outside two layers of casing, due to inside and outside
It is connected with cooling water in two layers of casing, makes to cool down rapidly by the pyroreaction gas of region of discharge, the NTP active matter for avoiding reaction from generating
Matter is pyrolyzed.
Reaction gas enters inside NTP generator from air inlet 201 by the dielectric barrier discharge in each layer NTP discharge module
Area 207 is reacted, and the gas after reacting is by gap composed by inner layer sleeve 216 and outer layer sleeve 217, due to two sets
It is circulated outside pipe by cooling water, the higher reaction gas of temperature that have passed through region of discharge can cool down rapidly, and reaction is avoided to generate
NTP active material is pyrolyzed.
Outer layer sleeve 217 outside outermost NTP discharge module is equipped with water drainage part 209, is located at innermost layer
NTP discharge module 216 one end end of inner layer sleeve be equipped with water inlet member 212, the water drainage part 209, water inlet member 212
It is connected with cooling system 400.216 other end end of inner layer sleeve positioned at the NTP discharge module of innermost layer is equipped with air inlet
201, the quartz ampoule 206 outside outermost NTP discharge module is equipped with gas outlet 210, the air inlet 201, outlet
Mouth 210 is connected with gas handling system 300.The water inlet member 212 only passes through the internal layer set of the NTP discharge module positioned at innermost layer
Pipe 216 is connected with cooling-water duct 213, and the air inlet 201 only passes through the internal layer set of the NTP discharge module positioned at innermost layer
Pipe 216 is connected with air flow channel.Gas circuit and water route are separated by baffle 219.
The high-field electrode 205 of each NTP discharge module is connected by a conducting wire with power supplier 500, low pressure
The equal independent grounding of electrode 208, the voltage of multiple NTP discharge modules is different, voltage is successively increased by internal layer outer layers.The present embodiment
In, the quantity of NTP discharge module is three, from inside to outside respectively level-one NTP discharge module, second level NTP discharge module, three-level
NTP discharge module, they are led with level-one high-field electrode conducting wire 202, second level high-field electrode conducting wire 203, three-level high-field electrode respectively
Line 204 is connect with external circuit；The low-field electrode 208 of three NTP discharge modules passes through a low-field electrode earth lead respectively
211 independent groundings.
Due to there is charged particle in active material, and then the charged particle concentration of gas is improved, is easier reaction gas
Exoelectrical reaction occurs, therefore the high-field electrode discharge voltage that high progression module is arranged is lower than harmonic series module, and it is living to be conducive to raising NTP
Property substance production rate, and then improve the discharging efficiency of high-field electrodes 205 at different levels.
As shown in figure 4, the gas handling system 300 includes NTP air cleaner 301, mass flow sensor 302, gas supply
The air inlet side of air feed pump 303, the air inlet pipe 304 is arranged in pump 303 and air inlet pipe 304, the NTP air cleaner 301
Positioned at air feed pump 303 outlet side and with NTP generate system 200 air flow channel be connected, the mass flow sensor
302 are located between NTP air cleaner 301 and air feed pump 303；The mass flow sensor 302, air feed pump 303 with control
Molding block 700 is connected；The air feed pump 303 receives the signal control of control module 700, forms closed-loop control system.The confession
Air pump 303 receives the signal control of control module 700, generates system 200 to NTP and provides by the filtering of NTP air cleaner 301
Air, since this system is closed-loop control system, therefore gas supply flow controllable precise.
As shown in figure 5, cooling system 400 includes NTP system water tank 401, water pump 402, the radiator 403 being sequentially communicated,
The water outlet of radiator 403 is connected by cooling water pipe 404 with the NTP water cooling runner for generating system 200, is set at radiator 403
Fan 405 is set, also sets up water temperature sensor 406 in cooling system 400, water temperature sensor 406, fan 405 are and control module
700 are connected, for monitoring cooling water temperature and by the temperature feedback of surveyed cooling water to control module 700, by controlling fan
The size of 405 revolving speeds is cooled down to by the cooling water of radiator 403, and the temperature for making NTP generate system 200 is maintained at more excellent
In the range of.
After the water pump 402 receives the signal of control module 700, extracted from NTP system water tank 401 recirculated cooling water into
Enter NTP generation system 200 to be cooled down, cooling water generates cooling each module in system 200 in NTP and takes away heat later, from row
Wet part 209 flows out, and enters water tank 401 by the road and carries out next round circulation.After flowing through NTP generation system 200 due to cooling water
Temperature can increase decrease cooling effect, therefore water temperature sensor 406 is housed on cooling water pipe 404, to monitor cooling water temperature.Water temperature
Measured temperature is fed back to control module 700 by sensor 406, with this by controlling the size of 405 revolving speed of fan to by radiating
The cooling water of device 403 is cooled down, and the temperature for making NTP generate system 200 is maintained in preferably range.
As shown in fig. 6, the vehicle power supply 501 is used as device general supply.Power supplier 500 includes vehicle power supply
501, inversion boosting device 502 and voltage controller 503, the vehicle power supply 501 are used as device general supply, and vehicle power supply is provided
Voltage handled through inversion boosting device 502, be increased to NTP and generate high voltage needed for discharge module in system 200；Control module
Different voltage signals is passed to inversion boosting device 502 by voltage controller 503 by 700, makes inversion boosting device 502 to each
High-field electrode 205 in grade NTP discharge module provides different voltage.
As shown in fig. 7, air, which enters diesel oil device air intake duct 602 through the filtering of filter 601, is then passed through diesel engine 603.Bavin
Oily device intake flow sensor 605 monitors the charge flow rate of diesel engine and feeds back flow signal to control module 700, is finally vented
After-treatment system 100 is accessed by Diesel Engine Exhaust Pipe 604.Temperature is required when regenerating due to after-treatment system 100 to DPF104
For degree at 100 DEG C -200 DEG C or so, temperature is excessively high to will lead to the decomposition of NTP active material, influences regeneration effect.Therefore pass through DPF temperature
The temperature signal that degree sensor 103 is fed back is controlled, so that after-treatment system 100 can be coupled with diesel engine system 600, temperature
The strategy that after injection is taken when spending high carries out heating and thermal insulation to DPF104 using electric heating layer 102 when temperature is too low, in turn
Regeneration temperature can be controlled.
As shown in figure 8, the control method of vehicle-mounted DPF on-line regeneration system described in the utility model, which is characterized in that including
Following steps:
Step 1: rating test is carried out to after-treatment system 100, is determined two when DPF104 can be worked normally under different operating conditions
The target differential pressure at the both ends DPF104 when the maximum differential pressure value at end and regeneration are completed, respectively as regeneration initial pressure difference value, has regenerated
At pressure difference.By testing the optimal reaction temperature range for determining NTP active material and DPF104 internal particle as regeneration temperature
Spend section.Initial pressure difference value P will be regeneratedstart, regeneration complete pressure difference Pover, regeneration temperature section [Tmin,Tmax] deposit control
Module 700.
Step 2: system 200, gas handling system 300, cooling system 400 and power supplier 500 are generated to NTP and carried out
Combined calibrating test, determines the maximum air flow amount Q that can bear in NTP generator2With minimum discharge Q needed for regeneration1Range
The ceiling temperature T in the optimal discharge voltage section of every grade of discharge module and cooling water in interior NTP generator0, it is deposited into control
Module 700.
Step 3: it is monitored by the front end DPF first pressure sensor 101 and the rear end DPF second pressure sensor 105
The both ends DPF104 pressure difference P, with the regeneration initial pressure difference value P prestored in control module 700startIt is compared, to judge DPF104
Whether need to regenerate；
Step 4: when the engine is running, if monitor that the both ends DPF104 pressure difference is greater than regeneration initial pressure difference value, control
Module 700, which sends signal to NTP generator cooling system 400, NTP generator gas handling system 300 and power supplier 500, to be made
System starts control diesel engine enters regeneration mode；In entire regenerative process:
The air mass flow Q of NTP gas handling system is fed back to control module 700 by mass flow sensor 302, as Q < Q1,
Control module 700 improves 303 revolving speed of air feed pump and increases the discharge voltage of high-field electrode 205, reduces air feed pump if Q > Q2
303 revolving speeds and the discharge voltage for reducing high-field electrode 205；
Control module 700 receives feedback information water temperature T from water temperature sensor 406wIf cooling water real time temperature TwGreatly
Cooling water temperature T is prestored into obtain in prior0Then opening fan 405 is to flow through the cooling water of radiator 403 to be cooled down；Finally to
After-treatment system 100 sprays into NTP active material, carries out on-line regeneration；
Step 5: the 103 real-time monitoring regeneration temperature T of temperature sensor above DPF104dIf Td>Tmax, increase is taken to spray
The engine control strategy of advance angle oil reduces delivery temperature, carries out under the atmosphere of exhaust due to entirely reacting, and then reduces
Reaction temperature；Work as Td<TminWhen, the electric heating layer 102 being nested on DPF104 is opened, reaction zone temperature is made to be maintained at suitable
In temperature range；
Step 6: if the both ends DPF104 pressure difference P > PoverRate-determining steps five are then returned, continues to execute and follows bad step；When P <
Pover, show that regeneration has been completed, control module 700 closes NTP and generates system 200, NTP generator gas handling system 300, NTP
Generator cooling system 400 and power supplier 500.
The embodiment is the preferred embodiment of the utility model, but the utility model is not limited to above-mentioned embodiment party
Formula, without departing substantially from the substantive content of the utility model, those skilled in the art can be made any apparent
Improvement, replacement or modification belong to the protection scope of the utility model.
Claims (9)
1. a kind of vehicle-mounted DPF on-line regeneration system, which is characterized in that generate system including after-treatment system (100), NTP
(200), gas handling system (300), cooling system (400), power supplier (500), diesel engine system (600) and control module
(700),
The after-treatment system (100) includes the DPF (104), DPF being mounted on diesel engine system (600) exhaust pipe (605)
(104) it is second pressure sensor (105), DPF that, which there are NTP nozzle (106) and first pressure sensor (101), rear end in front end,
(104) external to be nested with electric heating layer (102), dpf temperature sensor (103) are housed above DPF (104), for detecting DPF again
Temperature when raw, and measured temperature is fed back into control module (700)；
Power supplier (500) is that NTP generates system (200) offer power supply, and the NTP generates system (200) by multiple NTP
Discharge module, each NTP discharge module include high-field electrode (205), low-field electrode (208) and quartz ampoule (206), high pressure
Electrode (205) is nested in the outside of quartz ampoule (206), coats insulating heat-conductive silica gel, low-field electrode outside high-field electrode (205)
(208) there are gaps as dielectric barrier discharge area on the inside of quartz ampoule (206) and between quartz ampoule (206) for setting
(207), the internal layer of each discharge module, outer layer are respectively equipped with inner layer sleeve (216), outer layer sleeve (217)；
Multiple NTP discharge module nested arrangements are provided with low tension between the low-field electrode (208) and inner layer sleeve (216)
Pole water-cooling channel (215) is provided with high-field electrode water-cooling channel (214) between high-field electrode (205) and outer layer sleeve (217),
High-field electrode water-cooling channel (214), low-field electrode water-cooling channel (215) are connected with cooling system (400)；
Dielectric barrier discharge area (207) between the low-field electrode (208) and quartz ampoule (206) of each NTP discharge module is equal
Gap for the first air duct, between the outer layer sleeve (217) and inner layer sleeve (216) of the NTP discharge module of internal layer
For the second air flow channel, and be located at the first air duct of adjacent two layers NTP discharge module by two layers of NTP discharge module it
Between the connection of the second air flow channel, and air flow channel is S-type；The air inlet of the air flow channel is connected with gas handling system (300),
Gas outlet is connected with DPF (104)；
The high-field electrode (205) of each NTP discharge module is connected by a conducting wire with power supplier (500), low pressure
Electrode (208) equal independent grounding, the voltage of multiple NTP discharge modules is different, voltage is successively increased by internal layer outer layers；
First pressure sensor (101), second pressure sensor (105), dpf temperature sensor (103) are and control module
(700) it is connected.
2. vehicle-mounted DPF on-line regeneration system according to claim 1, which is characterized in that the gas handling system (300) includes
NTP air cleaner (301), mass flow sensor (302), air feed pump (303) and air inlet pipe (304), the NTP air filter
Clear device (301) is arranged in the air inlet side of air feed pump (303), and the air inlet pipe (304) is located at the outlet one of air feed pump (303)
Side and with NTP generate system (200) air flow channel be connected, the mass flow sensor (302) is located at NTP air-filtering
Between device (301) and air feed pump (303)；The mass flow sensor (302), air feed pump (303) with control module (700)
It is connected；
The air feed pump (303) receives the signal control of control module (700), forms closed-loop control system.
3. vehicle-mounted DPF on-line regeneration system according to claim 2, it is characterised in that: cooling system (400) includes successively
NTP system water tank (401), water pump (402), the radiator (403) of connection, the water outlet of radiator (403) passes through cooling water pipe
(404) it is connected with the NTP water cooling runner for generating system (200), fan (405) is set at radiator (403), cooling system
(400) water temperature sensor (406) are also set up in,
Water temperature sensor (406), fan (405) are connected with control module (700), for monitoring cooling water temperature and being surveyed
The temperature feedback of cooling water gives control module (700), by controlling the size of fan (405) revolving speed to by radiator (403)
Cooling water cooled down, make NTP generate system (200) temperature be maintained in preferably range.
4. vehicle-mounted DPF on-line regeneration system according to claim 3, it is characterised in that: DPF temperature is housed above DPF (104)
It spends sensor (103), feeds back to control module (700) for detecting temperature when dpf regeneration, and by measured temperature；Control mould
Block (700) controls DPF (104) regeneration temperature by control electric heating layer (102).
5. vehicle-mounted DPF on-line regeneration system described in any one of -4 according to claim 1, it is characterised in that: DPF's (104)
Material is honeycomb ceramic filter, and hole density is 100cpsi, diameter 144mm, the long 152mm of bus.
6. vehicle-mounted DPF on-line regeneration system according to claim 5, it is characterised in that: low-field electrode (208) and quartz ampoule
(206) discharging gap in the dielectric barrier discharge area (207) between is 2mm.
7. vehicle-mounted DPF on-line regeneration system according to claim 6, it is characterised in that: the adjacent high-field electrode water
Cold passage (214), low-field electrode water-cooling channel (215) successively penetrate through, and are formed S type cooling-water duct (213).
8. vehicle-mounted DPF on-line regeneration system according to claim 6, it is characterised in that: be located at outermost NTP electric discharge mould
Outer layer sleeve (217) outside block is equipped with water drainage part (209), positioned at the inner layer sleeve of the NTP discharge module of innermost layer
(216) one end end is equipped with water inlet member (212), and the water drainage part (209), water inlet member (212) are and cooling system
(400) it is connected；
Inner layer sleeve (216) other end end positioned at the NTP discharge module of innermost layer is equipped with air inlet (201), is located at outermost
Quartz ampoule (206) outside the NTP discharge module of layer is equipped with gas outlet (210), the air inlet (201), gas outlet (210)
It is connected with gas handling system (300)；
The water inlet member (212) only passes through the inner layer sleeve (216) and cooling-water duct of the NTP discharge module positioned at innermost layer
(213) it is connected, the air inlet (201) only passes through the inner layer sleeve (216) and air of the NTP discharge module positioned at innermost layer
Runner is connected.
9. vehicle-mounted DPF on-line regeneration system according to claim 6, it is characterised in that: power supplier (500) includes
Vehicle power supply (501), inversion boosting device (502) and voltage controller (503), the vehicle power supply (501) are always electric as device
Source, voltage provided by vehicle power supply are handled through inversion boosting device (502), are increased to NTP and are generated discharge module in system (200)
Required high voltage；Different voltage signals is passed to inversion boosting device by voltage controller (503) by control module (700)
(502), inversion boosting device (502) is made to provide the high-field electrode (205) in every level-one NTP discharge module different voltage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820855451.7U CN208734408U (en) | 2018-06-04 | 2018-06-04 | A kind of vehicle-mounted DPF on-line regeneration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820855451.7U CN208734408U (en) | 2018-06-04 | 2018-06-04 | A kind of vehicle-mounted DPF on-line regeneration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533363A (en) * | 2018-06-04 | 2018-09-14 | 江苏大学 | A kind of vehicle-mounted DPF on-line regenerations system and control method |
| CN113038681A (en) * | 2021-02-23 | 2021-06-25 | 江苏大学 | NTP generator circulating cooling system based on phase change energy storage and control method |
-
2018
- 2018-06-04 CN CN201820855451.7U patent/CN208734408U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533363A (en) * | 2018-06-04 | 2018-09-14 | 江苏大学 | A kind of vehicle-mounted DPF on-line regenerations system and control method |
| CN108533363B (en) * | 2018-06-04 | 2023-08-18 | 江苏大学 | Vehicle-mounted DPF online regeneration system and control method |
| CN113038681A (en) * | 2021-02-23 | 2021-06-25 | 江苏大学 | NTP generator circulating cooling system based on phase change energy storage and control method |
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