CN105251323B - System occurs for a kind of vehicle-mounted water cooling formula NTP - Google Patents
System occurs for a kind of vehicle-mounted water cooling formula NTP Download PDFInfo
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- CN105251323B CN105251323B CN201510706459.8A CN201510706459A CN105251323B CN 105251323 B CN105251323 B CN 105251323B CN 201510706459 A CN201510706459 A CN 201510706459A CN 105251323 B CN105251323 B CN 105251323B
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Abstract
Occur system the invention provides a kind of vehicle-mounted water cooling formula NTP, including power suppling part point, NTP generators, diesel engine system, enter outlet system, cooling system.The power suppling part point includes diesel engine battery, inverter, smart electronicses shock machine, pressure regulator and oscillograph.12V DC voltage is become 220V alternating currents by inverter, then carries out frequency modulation, pressure regulation by pressure regulator and oscillograph.Enter outlet system and pressurizer tank and MFC are housed, accurately control charge flow rate.The cooling system monitors region of discharge temperature in real time using infrared radiation thermometer, and the flow of water pump is controlled by feedback circuit, controls region of discharge temperature.The nozzle that active gases caused by the NTP generators is passed through on blast pipe, spray into blast pipe.The present invention can not only reduce the NO in diesel engine vent gasx, also can be by dpf regeneration；Working stability, caused active material concentration are high, and pernicious gas transformation efficiency is high, and without using catalyst, is not limited by fuel qualities.
Description
Technical field
The invention belongs to Diesel Engine After-treatment Technology field, system occurs for especially a kind of vehicle-mounted water cooling formula NTP.
Background technology
With the fast development of social industry, diesel engine has obtained more and more wider in the field such as engineering machinery and social traffic
General application, the environmental problem thereby resulted in also become increasingly conspicuous.In order to mitigate diesel engine noxious gas emission to caused by environment
Pollution, various countries have carried out stricter Abgasgesetz.
NOxIt is two kinds of main noxious gas emissions of diesel engine with PM, severe patient threatens the health of the mankind.At present,
SCRSelective catalytic reduction, SCR technology can effectively reduce NOx.But its use cost is higher, technology is still
It is immature.Particle trapper (Diesel particulate filter, DPF) technology is considered as that reduction PM discharges are most effective
One of post-processing technology.But with the increase of PM depositions so that DPF exhaust back pressure increase, it is considered that as DPF row
The performance of diesel engine can significantly deteriorate when gas back pressure is more than 20kPa, therefore DPF must be regenerated.
Renovation process conventional DPF mainly includes hot recycling, catalytic regeneration.Hot recycling can be larger caused by heating inequality
Wall surface temperature gradient, causes hot-spot, causes structural failure.Catalytic regeneration can be reduced PM ignition temperature using catalyst
To 200~300 DEG C, to realize regeneration.But the S contents of the technical requirements fuel oil are typically 150 × 10-6Hereinafter, otherwise can cause
Catalyst sulfur poisoning, this is not suitable for the not high national conditions of the current fuel qualities in China.
Low temperature plasma (Non-thermal plasma, NTP) technology is a kind of emerging Diesel Engine Exhaust Purification skill
Art.NTP generators are during electrion, and gas that high energy electron is acted in discharging gap can produce O3、NO2, OH etc.
Oxidizing species.NTP regeneration DPF technologies are exactly that complicated chemical reaction occurs with PM using these oxidizing species to realize
PM removing.
NTP regeneration DPF technologies have the characteristics of efficient, safety, non-secondary pollution, have become the research heat of domestic scholars
Point.Such as patent CN201371026Y describes a kind of method that NTP directly handles diesel engine vent gas, although the method can be effective
Diesel engine pernicious gas is converted, but diesel engine vent gas is passed directly into the device, makes its unstable working condition, and transformation efficiency is not
Enough height.Patent CN102678238B describes regenerates DPF using NTP, reduces the control method of harmful emission of diesel engine, but not right
NTP generators part carries out elaboration.The present invention is to handle diesel engine pernicious gas indirectly using NTP, and elaborates one
Kind can vehicle-mounted, stabilization NTP generator systems.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of dielectric barrier discharge formula NTP that can be vehicle-mounted, stable and produced
System, to diesel engine noxious gas emission thing especially NOxDischarged with PM, effectively, continuously convert, realize DPF
Regeneration, diesel emission is allowed to meet increasingly strict Abgasgesetz.This NTP generator systems stable working state, pernicious gas
Transformation efficiency it is high.
The present invention is to realize above-mentioned technical purpose by following technological means.
System, including power suppling part point, NTP generators, diesel engine system, disengaging occur for a kind of vehicle-mounted water cooling formula NTP
Gas system and cooling system,
The diesel engine system include diesel engine, cooling water tank, blast pipe, diesel engine battery, throttle position switch,
Speed probe, DPF, pressure sensor and ECU control systems, the cooling water tank are located at the front end of diesel engine and and diesel oil
Machine cooling water inlet is connected, and blast pipe extends to body rear end, diesel engine battery and bavin from the air exit of diesel engine
The startup motor homonymy of oil machine and connected with two circuit connecting wires, throttle position switch is installed in gas pedal, rotating speed
Sensor is installed on the body by crankshaft of diesel engine Flywheel disc, and DPF is installed in packaging body and is connected to by flange panel
On blast pipe, pressure sensor is installed on the both ends of packaging body, and the throttle position switch, speed probe and pressure pass
Sensor is connected with ECU control systems by signal wire；
The power suppling part point includes inverter, smart electronicses shock machine, pressure regulator and oscillograph, the inversion electricity
Source couples with diesel engine storage battery, and smart electronicses shock machine electrically connects with inverter, pressure regulator, oscillograph with intelligent electricity
Sub- shock machine electrically connects；
The NTP generators include quartz glass tube, center low-field electrode, high-field electrode, shoulder hole, drive end bearing bracket, rear end
Lid, the center low-field electrode both ends are provided with external screw thread, the center low-field electrode be located in quartz glass tube and with quartzy glass
Glass pipe is coaxial, and center low-field electrode surrounds discharging gap with quartz glass tube, and two shoulder holes are loaded on center low-field electrode respectively
Go up and be located at quartz glass tube both ends, the air admission hole connected with discharging gap is respectively equipped with the shoulder hole at both ends, is gone out
Stomata, is respectively equipped with inlet opening, apopore on the drive end bearing bracket, rear end cap, the inlet opening, apopore respectively with cooling water tank
Connection, the both ends of the drive end bearing bracket, rear end cap respectively with the center low-field electrode are threadedly coupled, and the high-field electrode is provided with
High-field electrode binding post, the low-field electrode binding post being connected with center low-field electrode is provided between drive end bearing bracket and shoulder hole；It is described
The center low-field electrode of NTP generators is connected with oscillograph, and high-field electrode is connected with the output end of smart electronicses shock machine, described
The measuring circuit of power suppling part point is made up of tie point, the second branch road, and tie point is by electric capacity C1With electric capacity C2Series connection group
Into second route measurement electric capacity C3It is composed in series with NTP generators, tie point, the second branch road difference wire ground, and with
Oscillograph connects；
It is described enter outlet system include air compressor machine, pressurizer tank, mass flow controller, nozzle, the air compressor machine passes through pipe
Road is connected with the air admission hole on shoulder hole, and the pressurizer tank and mass flow controller are arranged between air compressor machine and air admission hole
Pipeline on；The nozzle is arranged on blast pipe and connected with blast pipe, and the nozzle connects with the venthole；
The cooling system includes water pump and infrared radiation thermometer, and the water pump is loaded on the pipe between inlet opening and cooling water tank
On road, infrared radiation thermometer is loaded in the front of quartz glass tube and is connected with water pump by signal wire.
Preferably, the center low-field electrode is stainless steel tube, and the high-field electrode can be in 100~400mm using length
In the range of the wire netting that adjusts.
Preferably, the pipeline between the air compressor machine and air admission hole, between venthole and nozzle is heat-insulated corrosion resistant
Pipeline.
Preferably, the wall thickness of quartz glass tube is 1-3mm, the discharging gap between center low-field electrode and quartz glass tube
For 2-3mm.
Preferably, the inlet opening, be respectively equipped with a water pipe elbow upwardly extended at apopore.
System occurs for vehicle-mounted water cooling formula NTP of the present invention, and the NTP generators are coaxial unit formula
NTP generation systems, its work general principle are：By dielectric barrier discharge, the source of the gas such as air can be breakdown in discharge range,
Low temperature plasma is produced, wherein including a large amount of O, O2、O3、OH、NO2And the various excitation state of nitrogen, oxygen atom.These materials
There is very strong oxidisability, with O3And NO2Exemplified by, diesel engine pernicious gas can be aoxidized, promote PM to decompose, realize dpf regeneration,
Ensure the reliable and stable operation of diesel engine.
Vehicle-mounted water cooling formula NTP of the present invention occurs system and had the advantage that：
1. it is introduced into using the cooling water in cooling water tank in the low-field electrode of center, to cool down caused by NTP generators
Heat, meanwhile, the infrared radiation thermometer in cooling system detects the temperature of region of discharge in real time, and measured temperature is fed back and fed water
Pump, the flow of cooling water is controlled with this, keep region of discharge temperature to maintain optimal temperature range, ensure that generator is reliably steady
Fixed work, increases caused activity gas concentration；Region of discharge temperature is set to be maintained at optimum value, so that generator work is more
Add stabilization.In addition, setting the water pipe elbow being bent upwards at NTP generators drive end bearing bracket and back shroud, cooling water can be full of
Center low-field electrode, so that whole discharge range cooling is cold uniformly, the stability of NTP generators work is improved, increase produces
Activity gas concentration.
2. in the NTP generators, the center low-field electrode is stainless steel tube, both ends are provided with two shoulder holes, ensure
The axiality of center low-field electrode and quartz glass tube.Quartz glass tube is 1-3mm as discharge medium, its wall thickness, and center is low
Discharging gap between piezoelectricity pole and quartz glass tube is 2-3mm, can form the discharge space of stable and uniform, and caused by it
Active material can reach processing pernicious gas and regenerate DPF requirement.Wire netting passes through snap ring as high-field electrode, wire netting
The outer wall of tight and quartz glass tube, the position by changing snap ring can change the length of wire netting, make its can 100~
400mm range regulation, when the larger optional increase wire netting length of charge flow rate, increase region of discharge area, increase produces
NTP activity gas concentrations.Improve the transformation efficiency of pernicious gas.
When engine speed is higher, extraction flow is larger, it is necessary to produce larger activity gas concentration.Now, gas is increased
Source flux, increase wire netting length, adjust discharge voltage and discharge frequency, be allowed to caused NTP activity gas concentrations maximum, with
Higher rotation speed and the operating mode of larger extraction flow match.It is conversely, as the same.
3. ECU control systems are according to diesel engine condition signal and DPF back pressure signals, the work of adjust automatically NTP generators
Parameter.
4. it is described enter outlet system, equipped with pressurizer tank and mass flow controller, accurately control air inflow.NTP active matters
The activity of matter is affected by temperature larger, and has strong oxidizing property, whole pipeline uses heat-insulated resistant material, keeps generator production
The activity of raw NTP active gases.
5. while a variety of noxious emissions of diesel engine (NO, HC, CO, PM) is handled, DPF regeneration can also be realized,
And not by the limit value of fuel qualities.
Brief description of the drawings
Fig. 1 is the structural representation that system occurs for vehicle-mounted water cooling formula NTP of the present invention.
Fig. 2 is the NTP generating apparatus structure chart.
Fig. 3 is that the power suppling part divides schematic diagram.
Description of reference numerals is as follows：
1- power suppling parts point, 101-- inverters, 102- pressure regulators, 103- oscillographs, the impact of 104- smart electronicses
Machine, 2-NTP generators, 201- quartz glass tubes, 202- centers low-field electrode, 203- high-field electrodes, 204- air admission holes, 205- ranks
Terraced hole, 206- drive end bearing brackets, 207- water pipe elbows, 208- discharging gaps, 209- low-field electrode binding posts, 210- high-field electrode wiring
Post, 211- ventholes, 212- rear end caps, 3- diesel engine systems, 301- diesel engines, 302- cooling water tanks, 303- blast pipes, 304-
Diesel engine battery, 305- start motor, 306- speed probes, 307- throttle position switch, 308- pressure sensors,
309- pressure sensors, 310-ECU control systems, 4- pipelines, 501- circuit connecting wires, 502- electric capacity C1, 503- electric capacity C2,
504- electric capacity C3, 6- enters outlet system, 601 air compressor machines, 602 pressurizer tanks, 603 mass flow controllers, 604- nozzles, 7- coolings
System, 701 water pumps, 702 infrared radiation thermometers.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
Not limited to this.
As shown in Figure 1, Figure 2 and Figure 3, system, including power suppling part occur for vehicle-mounted water cooling formula NTP provided by the invention
Point, NTP generators 2, diesel engine system, conduit connection point, circuit connecting section, enter outlet system 6 and cooling system 7.Institute
Stating diesel engine system 3 includes diesel engine 301, cooling water tank 302, blast pipe 303, diesel engine battery 304, throttle position sensor
Device 307, speed probe 306, DPF308, pressure sensor 309 and ECU control systems 310, the cooling water tank 302 are located at
The front end of diesel engine 301, and be connected with engine cool water inlet.Blast pipe 303 prolongs always from the air exit of diesel engine 301
Body rear end is reached, the homonymy of startup motor 305 of diesel engine battery 304 and diesel engine, is connected with two circuit connecting wires.Oil
Door position sensor 307 is installed in gas pedal, and speed probe is installed on the body by crankshaft of diesel engine minute wheel disk.
DPF308 is installed in packaging body, and by flange panel, is connected on blast pipe 303.Pressure sensor 309 is installed on encapsulation
The both ends of body.The throttle position switch 307, speed probe 306 and pressure sensor 309 with ECU control systems
310 are connected by signal wire；
The power suppling part point includes inverter 101, smart electronicses shock machine 104, pressure regulator 102 and oscillograph
103, the inverter electrically connects with diesel engine battery 304, and smart electronicses shock machine 104 electrically connects with inverter 101,
Pressure regulator 102, oscillograph 103 electrically connect with smart electronicses shock machine 104；
As shown in Figure 2 and Figure 3, the NTP generators 2 include quartz glass tube 201, center low-field electrode 202, high-tension electricity
Pole 203, shoulder hole 205, drive end bearing bracket 206, rear end cap 212, the both ends of center low-field electrode 202 are provided with external screw thread, in described
Heart low-field electrode 202 is located in quartz glass tube 201 and coaxial with quartz glass tube 201, center low-field electrode 202 and quartz
Glass tube 201 surrounds discharging gap 208, and two shoulder holes 205 are loaded on center low-field electrode 202 and are located at quartzy glass respectively
The both ends of glass pipe 201, air admission hole 204, the outlet connected with discharging gap 208 is respectively equipped with the shoulder hole 205 at both ends
Hole 211, is respectively equipped with inlet opening, apopore on the drive end bearing bracket 206, rear end cap 212, the inlet opening, apopore respectively with
Cooling water tank is connected, and the both ends of the drive end bearing bracket 206, rear end cap 212 respectively with the center low-field electrode 202 are threadedly coupled,
The high-field electrode 203 is provided with high-field electrode binding post 210, is provided with and center low pressure between drive end bearing bracket 206 and shoulder hole 205
The low-field electrode binding post 209 that electrode 202 connects；The low-field electrode 209 of the NTP generators 2 is connected with oscillograph 103, high
Piezoelectricity pole 210 is connected with the output end of smart electronicses shock machine 104.The power suppling part is divided to 1 measuring circuit and two branch
Road is formed.First, electric capacity C1502 and electric capacity C2503 are composed in series.Second, measurement electric capacity C3504 and NTP generators 2 are connected
Composition, two branch road leads are grounded respectively, and are connected with oscillograph 103.
Diesel engine battery 304 (12V) becomes 220V alternating currents through inverter 101.By smart electronicses shock machine
104th, after the frequency modulation of pressure regulator 102, pressure regulation, high-field electrode binding post 210 and the low-field electrode wiring of NTP generators 2 are connected to
Post 209.It is attached between the system device by circuit connecting wire 501, in circuit equipped with electric capacity C1502nd, electric capacity C2503 Hes
Electric capacity C3504。
In the course of the work, ECU310 according to DPF front and back ends pressure sensor 309 transmit come signal whether determine DPF
Need to regenerate, if desired regenerate, ECU is further according to speed probe 306 and throttle position switch 305, exhaust gas temperature sensor
The signal of 307 transmission determines the operating mode of engine.The data that ECU is demarcated by early stage, analyze required NTP active gases
Amount, to inverter 101, small-sized air compressor 601 and transmission signal.Battery 12V direct current is converted into by inverter 101
220V alternating currents, the frequency modulation and voltage modulation through smart electronicses shock machine 104 produce the low-temperature plasma electrical source of high voltagehigh frequency, and pass through
The voltage needed for NTP generators is arrived in the regulation of adjuster 102.The work of NTP generators produces active gases, and regeneration DPF and conversion are arranged
NOx in gas.ECU310 determines the attention rate opportunity that NTP generators stop, ECU310 according to the pressure change of DPF front and back ends
Stop transmitting signal to inverter 101, small-sized air compressor 601, work stops.
In order that the reliable and stable operation of the device, speed probe 306, throttle position 305 and exhaust temperature signal 307 are adopted
Collect diesel engine condition signal, be sent to ECU；The exhaust that DPF is calculated according to DPF front and back end pressure sensor 309 simultaneously is carried on the back
Pressure is sent to ECU.Determine whether DPF needs to be regenerated and be passed through the dense of optimal low temperature plasma active gases by ECU
Degree.It is too high in order to prevent device region of discharge temperature, the reliability service of generator is influenceed, infrared radiation thermometer 702 detects in real time
Region of discharge temperature, ECU is sent to by the signal detected, and the stream whether needed by changing cooling water is calculated by ECU
Amount, to adjust region of discharge temperature, and is transmitted to water pump 701 by signal.
The embodiment is preferred embodiment of the invention, but the present invention is not limited to above-mentioned embodiment, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification belongs to protection scope of the present invention.
Claims (5)
1. system occurs for a kind of vehicle-mounted water cooling formula NTP, it is characterised in that including power suppling part point, NTP generators (2), diesel oil
Machine system, enter outlet system and cooling system,
The diesel engine system (3) includes diesel engine (301), cooling water tank (302), blast pipe (303), diesel engine battery
(304), throttle position switch (307), speed probe (306), DPF (308), pressure sensor (309) and ECU controls system
Unite (310), the cooling water tank (302) is located at the front end of diesel engine (301), and is connected with diesel engine cooling water inlet；Exhaust
Pipe (303) extends to body rear end, diesel engine battery (304) and diesel engine from the air exit of diesel engine (301)
Starting motor (305) homonymy and connected with two circuit connecting wires, throttle position switch (307) is installed in gas pedal,
Speed probe (306) is installed on the body by crankshaft of diesel engine Flywheel disc, and DPF (308) is installed in packaging body and passed through
Flange panel, it is connected on blast pipe (303), pressure sensor (309) is installed on the both ends of packaging body, and the throttle position passes
Sensor (307), speed probe (306) and pressure sensor (309) are connected with ECU control systems (310) by signal wire；
The power suppling part point includes inverter (101), smart electronicses shock machine (104), pressure regulator (102) and oscillograph
(103), the inverter electrically connects with diesel engine battery (304), smart electronicses shock machine (104) and inverter
(101) electrically connect, pressure regulator (102), oscillograph (103) electrically connect with smart electronicses shock machine (104)；The NTP occurs
Device (2) includes quartz glass tube (201), center low-field electrode (202), high-field electrode (203), shoulder hole (205), drive end bearing bracket
(206), rear end cap (212), center low-field electrode (202) both ends are provided with external screw thread, center low-field electrode (202) position
In quartz glass tube (201) and with quartz glass tube (201) coaxially, center low-field electrode (202) and quartz glass tube
(201) discharging gap (208) is surrounded, two shoulder holes (205) are respectively loaded on center low-field electrode (202) and positioned at quartz
Glass tube (201) both ends, the air admission hole connected with discharging gap (208) is respectively equipped with the shoulder hole (205) at both ends
(204), venthole (211), inlet opening, apopore, the water inlet are respectively equipped with the drive end bearing bracket (206), rear end cap (212)
Hole, apopore connect with cooling water tank respectively, the drive end bearing bracket (206), rear end cap (212) respectively with the center low-field electrode
(202) both ends threaded connection, the high-field electrode (203) are provided with high-field electrode binding post (210), drive end bearing bracket (206) and
The low-field electrode binding post (209) being connected with center low-field electrode (202) is provided between shoulder hole (205)；The NTP generators
(2) center low-field electrode (202) is connected with oscillograph (103), high-field electrode (203) and smart electronicses shock machine (104)
Output end is connected, and the measuring circuit of the power suppling part point (1) is made up of tie point, the second branch road, and tie point is by electricity
Hold C1 (502) and electric capacity C2 (503) is composed in series, second route measurement electric capacity C3 (504) and NTP generators (2) series connection group
Into, tie point, the second branch road difference wire ground, and be connected with oscillograph (103)；
It is described enter outlet system include air compressor machine (601), pressurizer tank (602), mass flow controller (603), nozzle (604),
The air compressor machine (601) is connected by pipeline with the air admission hole (204) on shoulder hole (205), the pressurizer tank (602) and matter
Amount flow controller (603) is arranged on the pipeline between air compressor machine (601) and air admission hole (204)；The nozzle (604) is set
Connected on blast pipe (303) and with blast pipe (303), the nozzle (604) connects with the venthole；
The cooling system includes water pump (701) and infrared radiation thermometer (702), and the water pump (701) is loaded on inlet opening and cooling
On pipeline between water tank (302), infrared radiation thermometer (702) is loaded in the front of quartz glass tube (201) and and water pump
(701) connected by signal wire.
2. system occurs for vehicle-mounted water cooling formula NTP according to claim 1, it is characterised in that the center low-field electrode
(202) it is stainless steel tube, the high-field electrode (203) uses the wire netting that length can be adjusted in the range of 100~400mm.
3. system occurs for vehicle-mounted water cooling formula NTP according to claim 1, it is characterised in that the air compressor machine (601) is with entering
Pipeline between stomata, between venthole and nozzle (604) is heat-insulated corrosion resistant pipeline.
4. system occurs for vehicle-mounted water cooling formula NTP according to claim 1, it is characterised in that the wall of quartz glass tube (201)
Thickness is 1-3mm, and the discharging gap (208) between center low-field electrode (202) and quartz glass tube (201) is 2-3mm.
5. system occurs for vehicle-mounted water cooling formula NTP according to claim 1, it is characterised in that at the inlet opening, apopore
It is respectively equipped with a water pipe elbow upwardly extended (207).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510706459.8A CN105251323B (en) | 2015-10-27 | 2015-10-27 | System occurs for a kind of vehicle-mounted water cooling formula NTP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510706459.8A CN105251323B (en) | 2015-10-27 | 2015-10-27 | System occurs for a kind of vehicle-mounted water cooling formula NTP |
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| Publication Number | Publication Date |
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| CN105251323A CN105251323A (en) | 2016-01-20 |
| CN105251323B true CN105251323B (en) | 2017-12-05 |
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| CN201510706459.8A Expired - Fee Related CN105251323B (en) | 2015-10-27 | 2015-10-27 | System occurs for a kind of vehicle-mounted water cooling formula NTP |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437948B (en) * | 2016-11-01 | 2019-04-30 | 江苏大学 | A kind of dpf regeneration system and control method |
| CN106382145B (en) * | 2016-11-04 | 2019-04-02 | 江苏大学 | A kind of exhaust treatment system and control method based on NTP technology |
| CN108554631B (en) * | 2018-06-04 | 2023-08-22 | 江苏大学 | Coaxial Multistage NTP Generator Based on Dielectric Barrier Discharge |
| CN108533363B (en) * | 2018-06-04 | 2023-08-18 | 江苏大学 | Vehicle-mounted DPF online regeneration system and control method |
| CN111946428B (en) * | 2020-07-14 | 2022-01-11 | 江苏大学 | DPF (diesel particulate filter) offline regeneration temperature control system and control method |
| CN113038681B (en) * | 2021-02-23 | 2022-08-23 | 江苏大学 | NTP generator circulating cooling system based on phase change energy storage and control method |
| CN113477199A (en) * | 2021-06-29 | 2021-10-08 | 浙江理工大学 | Ultra-low temperature discharge unit |
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| CN105251323A (en) | 2016-01-20 |
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