CN112746881A - Back-blowing regeneration device for particle catcher of heavy-duty diesel vehicle - Google Patents
Back-blowing regeneration device for particle catcher of heavy-duty diesel vehicle Download PDFInfo
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- CN112746881A CN112746881A CN202110088323.0A CN202110088323A CN112746881A CN 112746881 A CN112746881 A CN 112746881A CN 202110088323 A CN202110088323 A CN 202110088323A CN 112746881 A CN112746881 A CN 112746881A
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- Prior art keywords
- particle catcher
- oxidation catalyst
- vehicle
- electromagnetic valve
- rear end
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0233—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention discloses a back-blowing regeneration device for a particle catcher of a heavy-duty diesel vehicle, wherein a diesel engine is connected with the front end of an oxidation catalyst through a first exhaust pipeline, and the rear end of the oxidation catalyst is connected with the front end of the particle catcher; the rear end of the particle catcher is connected with an exhaust pipeline; the porous high-pressure spray head is arranged at the rear end of the particle catcher; the vehicle gas storage tank is connected with the porous high-pressure spray head through a high-pressure gas pipe; the back-blowing maintenance end is connected with the oxidation catalyst; the first exhaust pipeline, the back flushing maintenance end and the tail gas pipeline are all provided with first electromagnetic valves; a second electromagnetic valve is arranged on the high-pressure air pipe; the first electromagnetic valve, the air extracting pump and the second electromagnetic valve are all connected with the controller. The invention not only can realize automatic back flushing regeneration, but also reduces the maintenance frequency and the corresponding maintenance cost of the vehicle owner who needs to go to the after-sales shop or the repair shop frequently due to the blockage of the particle catcher.
Description
Technical Field
The invention relates to the field of diesel engine particle traps, in particular to a back-blowing regeneration device for a particle trap of a heavy-duty diesel vehicle.
Background
With the increase of the total value of domestic production, the quantity of domestic motor vehicles is gradually increased. However, with the increase of motor vehicles, the problem of exhaust pollution caused by the motor vehicles is gradually revealed, and data show that the particulate matter emission of the motor vehicles accounts for about 30% of the total emission. The engine of the same discharge capacity, diesel engine particulate matter discharge is 30 ~ 80 times that the gasoline engine discharged, reduces the diesel engine particulate matter and discharges and take place to reducing "haze" phenomenon, improve resident's health and have important meaning.
The Diesel Particulate Filter (DPF) can effectively reduce the emission of diesel particulate matters, the filtering efficiency of the DPF on the diesel particulate matters reaches 95%, and the DPF is gradually applied in China at present. When the DPF is used, the exhaust back pressure of the diesel engine is increased and the intake air amount is decreased with the gradual increase of particulate matter, and finally, the combustion of the diesel engine is deteriorated, the dynamic property of the vehicle is lowered, and the fuel economy is deteriorated. Therefore, when the DPF is used, it is necessary to clean the particulate matter, that is, to regenerate the DPF, when a large amount of particulate matter is accumulated. The regeneration modes commonly used at present are thermal regeneration and manual maintenance regeneration. The thermal regeneration mainly comprises various modes such as tail pipe injection regeneration, combustor regeneration, electric heater regeneration, in-cylinder post-injection regeneration and the like, and the thermal regeneration can be carried out without disassembling the DPF. However, due to the failure of the diesel engine or the use of diesel oil, the thermal regeneration DPF is often blocked, and at this time, the regeneration of the DPF can be performed only by manual maintenance methods such as high-pressure air blowback or water washing (or addition of other additives).
The washing regeneration can not lead to DPF carrier to damage, and particulate matter when regenerating gets rid of efficiently, except clearance diesel engine particulate matter, still can wash the ash content that is difficult to be regenerated by heat simultaneously. However, in order to ensure the efficiency of particulate matter cleaning, the DPF section is usually detached from the vehicle for offline maintenance. Since the particle catcher is heavy and often has thermal insulation thereon, each disassembly and maintenance takes a lot of time, thereby affecting the product use of users.
Disclosure of Invention
The invention provides a back flushing regeneration device for a particle catcher of a heavy-duty diesel vehicle, which aims to overcome the defect that a vehicle owner needs to frequently go to a vehicle after-sales store or a repair shop to clean and maintain the particle catcher because the particle catcher of the heavy-duty diesel vehicle is blocked.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a back-flushing regeneration device of a particle catcher of a heavy-duty diesel vehicle comprises a diesel engine, a controller, a vehicle gas storage tank, an oxidation catalyst, the particle catcher, a back-flushing maintenance end and a porous high-pressure spray head; the diesel engine is connected with the front end of the oxidation catalyst through a first exhaust pipeline, and the rear end of the oxidation catalyst is connected with the front end of the particle catcher; the rear end of the particle catcher is connected with an exhaust pipeline; the porous high-pressure spray head is arranged at the rear end of the particle catcher; the vehicle air storage tank is connected with the porous high-pressure spray head through a high-pressure air pipe; the back-blowing maintenance end is connected with the oxidation catalyst; the first exhaust pipeline, the back flushing maintenance end and the tail gas pipeline are all provided with first electromagnetic valves; a second electromagnetic valve is arranged on the high-pressure air pipe; the first electromagnetic valve, the air suction pump and the second electromagnetic valve are all connected with the controller.
Optionally, the blowback maintenance end comprises an air pump and a dust collecting cloth bag; the oxidation catalyst is sequentially connected with the air pump and the dust collecting cloth bag through a second exhaust pipeline.
Optionally, the second exhaust gas conduit is connected to a front end or a rear end of the oxidation catalyst.
Optionally, the first electromagnetic valve is arranged at the front end of the second exhaust pipe.
Optionally, the rear end of the oxidation catalyst is connected with the front end of the particle trap through a quick-release flange.
Optionally, the controller may be an ECU controller of the vehicle itself or a separate computer control panel.
Optionally, the porous high-pressure nozzle is arranged on a bracket rotating around a central shaft and sprays in a horizontal offset direction.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the device can carry out non-detachable on-line back flushing regeneration on the particle catcher, and the sweeping gas mainly utilizes high-pressure gas in a gas storage tank of the heavy diesel vehicle; secondly, the device is mainly controlled by the ECU, and does not need to be operated by a driver, so that great convenience is realized; finally, the device greatly reduces the frequency of drivers going to after-sales maintenance shops or automobile repair shops, and reduces the after-sales cost.
Drawings
FIG. 1 is a schematic diagram of a back-blowing regeneration device of a particle catcher for a heavy-duty diesel vehicle according to the present invention.
In the figure, 1-diesel engine; 2-a controller; 3-vehicle gas tank; 4-an oxidation catalyst; 5-a particle trap; 6-a first solenoid valve; 7-a second solenoid valve; 8-an air pump; 9-dust collecting cloth bag; 10-porous high pressure nozzle.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, a back-flushing regeneration device for a particle catcher of a heavy-duty diesel vehicle comprises a diesel engine 1, a controller 2, a vehicle gas storage tank 3, an oxidation catalyst 4, a particle catcher 5, a back-flushing maintenance end and a porous high-pressure nozzle 10; the diesel engine 1 is connected with the front end of an oxidation catalyst 4 through a first exhaust pipeline, and the rear end of the oxidation catalyst 4 is connected with the front end of a particle catcher 5; the rear end of the particle catcher 5 is connected with an exhaust pipeline; the porous high-pressure spray head 10 is arranged at the rear end of the particle catcher 5; the vehicle gas storage tank 3 is connected with the porous high-pressure nozzle 10 through a high-pressure gas pipe; the back-blowing maintenance end is connected with the oxidation catalyst 4; the first exhaust pipeline, the back flushing maintenance end and the tail gas pipeline are all provided with a first electromagnetic valve 6; a second electromagnetic valve 7 is arranged on the high-pressure air pipe; the first solenoid valve 6, the air pump 8 and the second solenoid valve 7 are all connected with the controller 2.
The working principle is as follows: when a vehicle is normally driven, tail gas generated by the diesel engine 1 enters the oxidation catalyst 4 through the first exhaust pipeline, then enters the particle catcher 5, and finally is discharged from the tail gas pipeline; the oxidation catalyst 4 mainly functions to increase the temperature and generate nitrogen dioxide, and releases heat by oxidizing carbon monoxide, hydrocarbons, and the like in the exhaust gas. The increased temperature and the generation of nitrogen dioxide are both for the subsequent units to be able to treat the particles efficiently, and the oxidation catalyst 4 provides a crucial basis for the continued operation of the entire device. The main function of the particle catcher 5 is to catch most of the particles, which can be realized by adjusting the number of the through channels in the filter, and filters with different efficiencies can be adopted according to different application objects. When the vehicle is flamed out for 5 minutes, the controller 2 automatically gives a back flushing regeneration signal to control the first electromagnetic valves 6 on the first exhaust pipeline and the tail gas pipeline to be closed, control the first electromagnetic valve 6 at the back flushing maintenance end to be opened, control the second electromagnetic valve 7 on the high-pressure gas pipe to be opened, and perform reverse purging on the particle catcher 5 to realize online high-pressure back flushing regeneration; after purging for 5-10 minutes (time is adjusted according to vehicle conditions) or when the vehicle starts, the controller 2 automatically gives a back flushing regeneration termination signal, controls the first electromagnetic valves 6 on the first exhaust pipeline and the tail gas pipeline to be opened, controls the first electromagnetic valve 6 at the back flushing maintenance end to be closed, controls the second electromagnetic valve 7 on the high-pressure gas pipe to be closed, terminates back flushing regeneration, and restores the driving mode.
In one embodiment, the back-blowing maintenance end comprises an air suction pump 8 and a dust collection cloth bag 9; the oxidation catalyst 4 is sequentially connected with an air pump 8 and a dust collecting cloth bag 9 through a second exhaust pipeline.
In this embodiment, when the first electromagnetic valve 6 at the back flushing maintenance end is controlled to be opened, and the air pump 8 is controlled to be opened at the same time, the back flushing gas is pumped into the dust collecting cloth bag 9 by the air pump 8, and the dust collecting cloth bag 9 is used for filtering particles, so as to prevent the particles from being discharged to pollute the environment; when the first electromagnetic valve 6 at the back flushing maintenance end is controlled to be closed, the air suction pump 8 is controlled to be closed at the same time. After the repeated blowback regeneration is completed, only the dust collecting cloth bag 9 needs to be replaced.
In one embodiment, the second exhaust gas conduit is connected at the front end or the rear end of the oxidation catalyst 4.
In the present embodiment, the front end of the second exhaust gas conduit may be connected to the front end of the oxidation catalyst 4 or between the oxidation catalyst 4 and the particulate trap 5, i.e., the rear end of the oxidation catalyst 4.
In one embodiment, the first solenoid valve 6 is disposed at the front end of the second exhaust duct.
In this embodiment, when the vehicle is normally driven, the first electromagnetic valve 6 is closed; when the back flushing regeneration operation is started, the first electromagnetic valve 6 is opened. The first electromagnetic valve 6 plays a role in isolating the blowback maintenance end from the oxidation catalyst 4.
In one embodiment, manual switches are provided in the lines connecting the first solenoid valve 6, the suction pump 8, and the second solenoid valve 7 to the controller 2, respectively.
In this embodiment, a manual switch S1 is installed on a line connecting the controller 2 and the first electromagnetic valve 6 on the first exhaust duct, a manual switch S2 is installed on a line connecting the controller 2 and the first electromagnetic valve 6 on the exhaust duct, a manual switch S3 is installed on a line connecting the controller 2 and the first electromagnetic valve 6 on the second exhaust duct, a manual switch S4 is installed on a line connecting the controller 2 and the air pump 8, and a manual switch S5 is installed on a line connecting the controller 2 and the second electromagnetic valve 7. When the manual switches S1, S2, S3, S4 and S5 are all turned off, the reverse blowing regeneration device is controlled to be manually turned on and off, so that more choices are provided for a vehicle owner, and different reverse blowing regeneration requirements of the particle catcher 5 are met.
In one embodiment, the rear end of oxidation catalyst 4 is connected to the front end of particle trap 5 by a quick release flange.
In this embodiment, the flange is the quick detach flange, and is not the bolt flange, saves the dismouting time.
In one embodiment, the controller 2 is implemented as a vehicle's own ECU controller or a separate computer control board.
In this embodiment, the controller 2 may be an ECU controller of the vehicle itself, or may be a separate computer control board. An ECU control program is directly written into an ECU controller of a vehicle aiming at a newly produced vehicle, and an additional computer control panel is additionally arranged for independent control aiming at a vehicle in use.
In one embodiment, the multi-orifice high pressure spray head 10 is mounted on a support that rotates about a central axis and sprays in a horizontally offset direction.
In this embodiment, porous high pressure nozzle 10 is fixed to be set up on the support, and the support can be rotatory round the center pin, and when porous high pressure nozzle 10 jetted air, because it jetted towards horizontal skew direction for porous high pressure nozzle 10 drives the support and rotates round the center pin under the effect of the back of jet-propelled contusion force, thereby makes the air current can reach more pore canals, and the regeneration is more comprehensive. The multi-hole high-pressure nozzle 10 may be a strip structure, a plurality of multi-hole high-pressure nozzles 10 may be adopted, and the multi-hole high-pressure nozzles may be symmetrically arranged on the support about the central axis, which is not particularly limited.
The invention describes a diesel particulate filter back-flushing regeneration device mainly applied to a five-country and six-country heavy diesel vehicle, which is formed by compressed air, an electromagnetic valve, a particulate filter, an ECU controller, various connecting wire harnesses, pipe fittings and the like carried by a vehicle body, so that the diesel particulate filter can be maintained in a non-detachable mode, the maintenance period of the particulate filter of the heavy diesel vehicle is prolonged, the maintenance frequency is reduced, and the convenience and the comfort of a vehicle owner of the five-country and six-country heavy diesel vehicle are improved. Of course, the invention is not limited to the diesel vehicle of the fifth and sixth countries.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (7)
1. The utility model provides a heavy diesel vehicle particle catcher blowback regenerating unit which characterized in that: the device comprises a diesel engine, a controller, a vehicle gas storage tank, an oxidation catalyst, a particle catcher, a back-flushing maintenance end and a porous high-pressure sprayer; the diesel engine is connected with the front end of the oxidation catalyst through a first exhaust pipeline, and the rear end of the oxidation catalyst is connected with the front end of the particle catcher; the rear end of the particle catcher is connected with an exhaust pipeline; the porous high-pressure spray head is arranged at the rear end of the particle catcher; the vehicle air storage tank is connected with the porous high-pressure spray head through a high-pressure air pipe; the back-blowing maintenance end is connected with the oxidation catalyst; the first exhaust pipeline, the back flushing maintenance end and the tail gas pipeline are all provided with first electromagnetic valves; a second electromagnetic valve is arranged on the high-pressure air pipe; the first electromagnetic valve, the air suction pump and the second electromagnetic valve are all connected with the controller.
2. The back flushing regeneration device for the particle catcher of the heavy duty diesel vehicle as claimed in claim 1, wherein: the back-blowing maintenance end comprises an air suction pump and a dust collecting cloth bag; the oxidation catalyst is sequentially connected with the air pump and the dust collecting cloth bag through a second exhaust pipeline.
3. The back flushing regeneration device for the particle catcher of the heavy duty diesel vehicle as claimed in claim 2, wherein: the second exhaust pipe is connected to a front end or a rear end of the oxidation catalyst.
4. The back flushing regeneration device for the particle catcher of the heavy duty diesel vehicle as claimed in claim 2, wherein: the first electromagnetic valve is arranged at the front end of the second exhaust pipeline.
5. The back flushing regeneration device for the particle catcher of the heavy duty diesel vehicle as claimed in claim 1, wherein: the rear end of the oxidation catalyst is connected with the front end of the particle catcher through a quick-release flange.
6. The back flushing regeneration device for the particle catcher of the heavy duty diesel vehicle as claimed in claim 1, wherein: the controller adopts an ECU controller of the vehicle or a separate computer control panel.
7. The back flushing regeneration device for the particle catcher of the heavy duty diesel vehicle as claimed in claim 1, wherein: the porous high-pressure spray head is arranged on a bracket rotating around a central shaft and sprays towards the horizontal offset direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088323.0A CN112746881A (en) | 2021-01-22 | 2021-01-22 | Back-blowing regeneration device for particle catcher of heavy-duty diesel vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088323.0A CN112746881A (en) | 2021-01-22 | 2021-01-22 | Back-blowing regeneration device for particle catcher of heavy-duty diesel vehicle |
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| Publication Number | Publication Date |
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| CN112746881A true CN112746881A (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110088323.0A Pending CN112746881A (en) | 2021-01-22 | 2021-01-22 | Back-blowing regeneration device for particle catcher of heavy-duty diesel vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417717A (en) * | 2021-07-16 | 2021-09-21 | 山西新华防化装备研究院有限公司 | Tail gas purification integrated device for heavy diesel engine test station |
| CN113417719A (en) * | 2021-08-02 | 2021-09-21 | 江苏禾宁流体科技有限公司 | Zero-energy-consumption back flushing system of particulate matter catcher |
| CN113503203A (en) * | 2021-08-27 | 2021-10-15 | 太原理工大学 | Disassembly-free particle trap blowback purification device |
| CN114307438A (en) * | 2022-01-10 | 2022-04-12 | 浙江大学 | Ship tail gas black carbon deep removal system and method based on charge enhanced filtration |
| CN115726864A (en) * | 2022-10-18 | 2023-03-03 | 黄山天之都环境科技发展有限公司 | Detachable diesel exhaust purification treatment CDPF regenerating unit |
-
2021
- 2021-01-22 CN CN202110088323.0A patent/CN112746881A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417717A (en) * | 2021-07-16 | 2021-09-21 | 山西新华防化装备研究院有限公司 | Tail gas purification integrated device for heavy diesel engine test station |
| CN113417719A (en) * | 2021-08-02 | 2021-09-21 | 江苏禾宁流体科技有限公司 | Zero-energy-consumption back flushing system of particulate matter catcher |
| CN113417719B (en) * | 2021-08-02 | 2023-07-21 | 江苏禾宁流体科技有限公司 | Zero-energy-consumption blowback system of particulate matter catcher |
| CN113503203A (en) * | 2021-08-27 | 2021-10-15 | 太原理工大学 | Disassembly-free particle trap blowback purification device |
| CN114307438A (en) * | 2022-01-10 | 2022-04-12 | 浙江大学 | Ship tail gas black carbon deep removal system and method based on charge enhanced filtration |
| CN115726864A (en) * | 2022-10-18 | 2023-03-03 | 黄山天之都环境科技发展有限公司 | Detachable diesel exhaust purification treatment CDPF regenerating unit |
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