CN111102037A - Engine catalysis type particulate trap with amortization guiding device - Google Patents
Engine catalysis type particulate trap with amortization guiding device Download PDFInfo
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- CN111102037A CN111102037A CN201911307605.4A CN201911307605A CN111102037A CN 111102037 A CN111102037 A CN 111102037A CN 201911307605 A CN201911307605 A CN 201911307605A CN 111102037 A CN111102037 A CN 111102037A
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- silencing
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- pipe
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- engine
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
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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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
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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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses an engine catalytic particle trap with a silencing and flow guiding device, which consists of an air inlet flange, a primary small hole silencing air inlet pipe, a secondary small hole silencing pipe, a shell, a damping layer of a catalytic conversion part, a gap structure, a catalytic particle trapping part, a damping layer of the catalytic particle trapping part, a primary silencing perforated plate, a secondary silencing perforated plate, a shrinkage pipe, an exhaust pipe and an exhaust flange. The double-layer silencing perforated plate with the novel double-stage sleeve small hole silencing pipe and the staggered small holes is adopted, the shape of a catalytic conversion part carrier is improved, tail gas purification and silencing aftertreatment can be further optimized, and the double-layer silencing perforated plate has the advantages of compact structure, good performance, stable operation and the like.
Description
Technical Field
The invention relates to the technical field of engine tail gas purification, in particular to an engine catalytic type particle trap with a silencing and flow guiding device.
Background
Along with the rapid advance of economic strength in China, the quality of life of people is continuously improved, the demand of people on motor vehicles is gradually increased, and the quantity of the motor vehicles to be kept is rapidly increased. Increasingly strict emission regulations put higher demands on engine emission control, and the emission of engine particles controlled by only an internal purification mode cannot meet the requirements of current emission standards and regulations, and a catalytic converter and a catalytic type particle trap are one of the most effective and most potential technologies for controlling the emission of pollutants and particles in the tail gas of an engine at present. The catalytic converter can purify pollutants such as HC and CO in the exhaust gas of the engine and convert NO in the exhaust gas into NO with strong oxidizing property2. The catalytic type particle trap can realize the trapping of particles in the tail gas of an engine through a multi-pore channel structure, and NO is2Continuously oxidize the particles in the filter body of the particle catcher, thereby realizing the regeneration of the catalytic particle catcher.
In urban noise pollution, the noise generated by motor vehicles accounts for a large proportion, and the noise brings great harm to daily life and health of people. In motor vehicle noise pollution, the exhaust system noise of the engine accounts for a large proportion. With the continuous development of engine technology, the engine speed and power are greatly improved, and the exhaust noise is larger and larger. Currently, the most effective method of controlling exhaust noise is to add an exhaust muffler after the engine.
In order to save the space of an exhaust aftertreatment system, a tail gas purification device and an exhaust noise control device of an engine can be organically combined and designed into an integrated structure, so that the dual functions of engine tail gas purification and exhaust noise control are realized. Therefore, the design and development of the catalytic type particulate trap of the engine, which has the advantages of compact structure, good performance and stable operation, have important significance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an engine catalytic type particle trap with a silencing and flow guiding device, the integrated structural design can purify pollutants such as HC, CO, PM and the like in exhaust gas discharged by an engine, meanwhile, the exhaust noise of the engine is controlled by arranging the silencing structure, and meanwhile, the front silencing structure with a certain flow guiding effect can enable the exhaust gas in a catalytic conversion part carrier to be distributed more uniformly, so that the carrier utilization rate is improved, and the service life is prolonged.
The technical scheme adopted by the invention is as follows: the engine catalytic particle trap with the silencing and flow guiding device is used in an engine exhaust system, preferably, the engine catalytic particle trap with the silencing and flow guiding device is horizontally arranged in an assembly state, and is characterized in that structures such as a primary small hole silencing air inlet pipe, a secondary small hole silencing pipe, a catalytic conversion part damping layer, a catalytic conversion part, a gap structure, a catalytic particle trapping part damping layer, a primary silencing perforated plate and a secondary silencing perforated plate are arranged in a shell with a circular cross section.
The right side of the first-stage small-hole noise-reduction air inlet pipe is in a closed state, and a small hole is formed in the pipe wall in the shell; the axis of the second-stage small-hole silencing inlet pipe coincides with the axis of the first-stage small-hole silencing inlet pipe, small holes are formed in the pipe wall and the right side of the pipe wall, and the small holes of the first-stage small-hole silencing inlet pipe and the small holes of the second-stage small-hole silencing inlet pipe are uniformly distributed in the embodiment.
The catalytic conversion part of carriers are arranged in the radial and right areas of the secondary small-hole silencing pipe, the carrier areas are all porous media, the material of the carrier areas is sepiolite, and the surface of the carrier areas is coated with a noble metal catalyst.
The catalytic type particle trapping part is composed of a series of inlet and outlet channels which are continuously and alternately blocked, exhaust enters the trapping part from an inlet channel, particles are trapped through the wall surface of a porous medium, then airflow flows out from outlet channels distributed around the inlet channel, the porous medium carrier material of the catalytic type particle trapping part is sepiolite, and the surface of the porous medium carrier material is coated with a noble metal catalyst.
Further, the preparation material of the catalytic conversion part carrier porous medium carrier is sepiolite, and the preparation method comprises the following steps: soaking sepiolite in hydrochloric acid with the concentration of 1mol/L for treatment for 18h, drying and roasting to obtain acidic sepiolite, soaking the acidic sepiolite in a catalyst solution with a certain concentration for ultrasonic soaking treatment, and finally roasting at a high temperature and a constant temperature to obtain the catalyst-loaded sepiolite carrier.
The catalytic conversion section and the catalytic particulate trap section each have a spacing from the inner surface of the housing that may vary depending on the type and design of the device used. The space between the two layers is filled with a shock absorption layer which can provide elastic support for the catalytic conversion part and the catalytic type particle trapping part. The elastomeric damping layer provides both thermal insulation to the external environment and mechanical support to the fragile structure, thereby protecting the fragile structure from mechanical impact over a wide range of aftertreatment operating temperatures.
The closed space formed between the right side of the catalytic conversion part and the left side of the catalytic type particle trapping part is of a middle gap structure, and the width of the gap structure is 10-50 mm.
One-level amortization perforated plate and second grade amortization perforated plate arrange in catalysis type particle entrapment part right side, and evenly distributed has been put to the equipartition on one-level amortization perforated plate and the second grade amortization perforated plate aperture, and the aperture is the staggered arrangement on one-level amortization perforated plate and the second grade amortization perforated plate, and aperture axis does not all be on same straight line on one-level amortization perforated plate and the second grade amortization perforated plate promptly.
Furthermore, numerical simulation is carried out on an engine catalytic type particle trap model with a silencing and flow guiding device by using Fluent software, and guidance can be provided for the structural optimization design of the model.
Compared with the prior art, the invention has the beneficial effects that:
(1) the novel double-stage sleeve small-hole silencing pipe can effectively eliminate exhaust noise of an engine and simultaneously play a certain role in flow guiding, so that automobile exhaust in a catalytic conversion part of a carrier is distributed more uniformly, the utilization rate of the carrier is improved, and the service life of the carrier is prolonged;
(2) by improving the shape of the carrier of the catalytic conversion part, the contact area of the exhaust gas of the engine and the catalytic conversion part is increased, therebyImproving the purification efficiency of pollutants such as HC, CO and the like in the tail gas of the engine and converting NO into NO2The conversion efficiency of (a);
(3) the double-layer silencing perforated plate with the staggered small holes is arranged, so that the back-and-forth reflection flow and energy attenuation of the tail gas of the engine are increased, and the aims of silencing and denoising are fulfilled;
(4) the catalytic conversion part and the catalytic type particle trapping part are connected in series, harmful gas in automobile exhaust emission can be effectively reduced, tiny particles in the exhaust can be trapped through mechanisms such as chemical reaction, adsorption, deposition, impact and the like, the emission concentration of pollutants in automobile exhaust is greatly reduced, and the porous medium characteristics of the carriers of the catalytic conversion part and the catalytic type particle trapping part also have certain effects on the aspect of further reducing exhaust noise;
(5) the exhaust gas purified by the catalytic conversion part can be redistributed to enter the catalytic type particle trapping part by arranging a certain gap structure between the right side of the catalytic conversion part and the left side of the catalytic type particle trapping part, so that the uniformity of the exhaust gas flow is effectively adjusted, and the particle trapping efficiency is improved;
(6) sepiolite with high thermal stability, high adsorptivity, large specific surface area, no toxicity and no radioactivity is used as a catalytic conversion part and a catalytic type particle trapping part carrier, so that the tail gas purification efficiency can be effectively improved;
(7) the integrated structure design of the exhaust purification and the noise elimination of the engine can be realized, the space structure of the exhaust aftertreatment system can be optimized and saved, and the integrated structure has the advantages of compact structure, good performance, stable operation and the like.
Drawings
FIG. 1 is a half-sectional view of an engine catalytic particulate trap with a sound-deadening flow-guiding device. In the figure: the device comprises an air inlet flange, a primary small hole silencing air inlet pipe, a secondary small hole silencing pipe, a shell, a catalytic conversion part damping layer, a catalytic conversion part, a gap structure, a catalytic particle trapping part damping layer, a primary silencing perforated plate, a secondary silencing perforated plate, a contraction pipe, a 13 exhaust pipe and an exhaust flange, wherein the primary small hole silencing air inlet pipe is 1, the secondary small hole silencing air inlet pipe is 2, the secondary small hole silencing pipe is 3, the shell is 4, the catalytic conversion part damping layer is 5, the catalytic conversion part.
FIG. 2 is a flow pattern of internal passages of a filter body of a catalytic particle trap portion of an engine catalytic particle trap having a noise reduction and flow guide device.
FIG. 3 is a cloud diagram of a two-dimensional CFD simulated velocity vector distribution of a centerplane of an engine catalyzed particulate trap having a sound attenuating and flow directing device.
FIG. 4 is a cloud diagram of a two-dimensional CFD simulated pressure distribution of a center plane of an engine catalyzed particulate trap with a sound attenuating and flow directing device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an engine catalytic particle trap with a silencing and flow guiding device comprises an air inlet flange 1, a primary small hole silencing air inlet pipe 2, a secondary small hole silencing pipe 3, a shell 4, a catalytic conversion part damping layer 5, a catalytic conversion part 6, a gap structure 7, a catalytic particle trapping part 8, a catalytic particle trapping part damping layer 9, a primary silencing perforated plate 10, a secondary silencing perforated plate 11, a contraction pipe 12, an exhaust pipe 13 and an exhaust flange 14.
The right side of the first-stage small-hole noise-reduction air inlet pipe 2 is in a closed state, and a small hole is formed in the pipe wall in the shell 4; the axes of the second-level small-hole silencing pipe 3 and the first-level small-hole silencing air inlet pipe 2 are coincided, and small holes are formed in the pipe wall; the carriers of the catalytic conversion part 6 are arranged in the radial and right areas of the secondary small-hole silencing pipe 3, the carrier areas are porous media, the material of the carrier areas is sepiolite, and the surface of the carrier areas is coated with a noble metal catalyst; the catalytic type particle trapping part 8 is composed of a series of inlet and outlet channels which are continuously and alternately blocked as shown in figure 2, exhaust enters the trapping part from the inlet channels, particles are trapped through the wall surface of a porous medium, then airflow flows out from outlet channels distributed around the inlet channels, the porous medium carrier material of the catalytic type particle trapping part is sepiolite, and the surface of the porous medium carrier material is coated with a noble metal catalyst; the carriers of the catalytic conversion part 6 and the catalytic type particle trapping part 8 are respectively spaced from the inner surface of the shell 4 by a certain distance, and the distance is filled with the damping layer 5 of the catalytic conversion part or the damping layer 9 of the catalytic type particle trapping part; the closed space formed between the right side of the catalytic conversion section 6 and the left side of the catalytic type particulate trapping section 8 is a middle gap structure 7; one-level amortization perforated plate 10 and second grade amortization perforated plate 11 arrange in the 8 right sides of catalysis type particle entrapment part, and evenly distributed's aperture has been put to one-level amortization perforated plate 10 and second grade amortization perforated plate 11, and aperture is the dislocation arrangement on one-level amortization perforated plate 10 and the second grade amortization perforated plate 11, installs shrink tube 12 and blast pipe 13 thereafter.
The working principle is as follows: the high-speed tail gas air current of engine's exhaust flows into one-level aperture amortization intake pipe 2, because one-level aperture amortization intake pipe 2 right side is sealed, tail gas flows into second grade aperture amortization pipe 3 through one-level aperture amortization intake pipe 2 circumference aperture and flows through catalytic conversion part 6 after carrying out amortization water conservancy diversion processing, catalytic conversion part 6 can purify pollutants such as HC, CO in the engine exhaust, simultaneously with the NO conversion formation in the exhaust have the NO of strong oxidizing property2The purified tail gas flows into the catalytic particle trapping part 8 after flowing through the gap structure 7 and redistributing the airflow, the tail gas flows into the filter element inlet channels arranged at intervals, after the exhaust gas enters from the filter element inlet channels, because the inlet channels are blocked by the inlet channel plugs at the right side, and the outlet channels are blocked by the outlet channel plugs at the left side, the exhaust gas can only pass through the porous medium wall surfaces between the channels and flows out from the adjacent other channel, namely the filter element outlet channel, in the process, the particulate matters (soot) in the exhaust gas are deposited on the porous medium wall surfaces of the inlet channels serving as the filter materials, the trapping function of the particulate matters in the exhaust gas is realized, and meanwhile, the particulate matters and NO are subjected to the trapping function2The reaction occurs, the catalytic particle trapping part 8 is regenerated, and finally, the clean tail gas is silenced by the first-stage silencing perforated plate 10 and the second-stage silencing perforated plate 11 and then is discharged from the exhaust pipe 13.
The numerical simulation is carried out on an engine catalytic type particle trap model with a silencing and flow guiding device by using Fluent software, guidance can be provided for the structural optimization design, a figure 3 is a two-dimensional CFD simulation velocity vector distribution cloud picture of a central plane of the engine catalytic type particle trap with the silencing and flow guiding device, a figure 4 is a two-dimensional CFD simulation pressure distribution cloud picture of the central plane of the engine catalytic type particle trap with the silencing and flow guiding device, the layering of the flow velocity is less in the sepiolite carrier of a catalytic conversion part, most of fluid passes through the whole sepiolite carrier at a uniform flow velocity, and the novel silencing and flow guiding device can effectively adjust the flow direction and the flow velocity of the engine exhaust before entering the catalytic conversion part, improve the radial exhaust distribution and enable the fluid in the sepiolite carrier to flow integrally uniformly, the expected optimization effect is achieved.
Claims (7)
1. The engine catalytic particle trap with the silencing and flow guiding device is characterized by comprising an air inlet flange 1, a primary small hole silencing air inlet pipe 2, a secondary small hole silencing pipe 3, a shell 4, a catalytic conversion part damping layer 5, a catalytic conversion part 6, a gap structure 7, a catalytic particle trapping part 8, a catalytic particle trapping part damping layer 9, a primary silencing perforated plate 10, a secondary silencing perforated plate 11, a contraction pipe 12, an exhaust pipe 13 and an exhaust flange 14.
2. The catalytic engine particulate trap of claim 1, wherein the particulate trap further comprises: the right side of the first-stage small-hole silencing air inlet pipe 2 is in a closed state, and a small hole is formed in the pipe wall in the shell 4.
3. The catalytic engine particulate trap of claim 1, further comprising: the axis of the second-stage small-hole silencing pipe 3 coincides with the axis of the first-stage small-hole silencing air inlet pipe 1, and small holes are formed in the pipe wall and the right side of the pipe wall.
4. The catalytic engine particulate trap of claim 1, further comprising: the catalytic conversion portion 6 is provided with a carrier in the radial direction and the right side region of the secondary small hole silencing pipe 3.
5. The catalytic engine particulate trap of claim 1, further comprising: a gap structure 7 of 10-50mm is provided between the right side of the catalytic conversion section 6 and the left side of the catalytic type particulate trapping section 8.
6. The catalytic engine particulate trap of claim 1, further comprising: the first-stage silencing perforated plate 10 and the second-stage silencing perforated plate 11 are provided with small holes which are arranged in a staggered manner.
7. The catalytic engine particulate trap of claim 1, further comprising: the raw materials of the carriers of the catalytic converter 6 and the catalytic type particulate trap 8 are sepiolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911307605.4A CN111102037B (en) | 2019-12-18 | 2019-12-18 | Engine catalysis type particulate trap with amortization guiding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911307605.4A CN111102037B (en) | 2019-12-18 | 2019-12-18 | Engine catalysis type particulate trap with amortization guiding device |
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| CN111102037A true CN111102037A (en) | 2020-05-05 |
| CN111102037B CN111102037B (en) | 2021-11-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108625933A (en) * | 2018-06-25 | 2018-10-09 | 江阴市硕淳环保科技有限公司 | A kind of diesel particulate trap based on DOC and DPF |
| CN112901312A (en) * | 2021-03-27 | 2021-06-04 | 扬州工业职业技术学院 | Diesel engine exhaust purification treatment device and method |
| CN113550811A (en) * | 2021-06-02 | 2021-10-26 | 内蒙古农业大学 | Diesel engine exhaust particulate matter trap and trapping method thereof |
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| CN112901312B (en) * | 2021-03-27 | 2022-03-11 | 扬州工业职业技术学院 | Diesel engine exhaust purification treatment device and method |
| CN113550811A (en) * | 2021-06-02 | 2021-10-26 | 内蒙古农业大学 | Diesel engine exhaust particulate matter trap and trapping method thereof |
| CN113550811B (en) * | 2021-06-02 | 2022-05-20 | 内蒙古农业大学 | Diesel engine exhaust particulate matter trap and trapping method thereof |
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| Publication number | Publication date |
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| CN111102037B (en) | 2021-11-12 |
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