CN111206978A - Automobile exhaust pipe with high purification efficiency and low air resistance - Google Patents
Automobile exhaust pipe with high purification efficiency and low air resistance Download PDFInfo
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- CN111206978A CN111206978A CN202010083500.1A CN202010083500A CN111206978A CN 111206978 A CN111206978 A CN 111206978A CN 202010083500 A CN202010083500 A CN 202010083500A CN 111206978 A CN111206978 A CN 111206978A
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- way catalyst
- air resistance
- purification efficiency
- low air
- exhaust pipe
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Classifications
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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
- F01N13/007—Apparatus used as intake or exhaust silencer
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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
- F01N13/009—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 having two or more separate purifying devices arranged in series
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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
- F01N13/02—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 having two or more separate silencers in series
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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
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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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/10—Carbon or carbon oxides
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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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/12—Hydrocarbons
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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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention belongs to the technical field of automobile exhaust treatment, and particularly discloses an automobile exhaust pipe with high purification efficiency and low air resistance, which comprises the following components: the device comprises a particulate matter filter, a three-way catalyst, a middle silencer, a rear silencer and a tail pipe; the particulate filter, the three-way catalyst, the middle muffler, the rear muffler and the tail pipe are sequentially connected to form the automobile exhaust pipe with high purification efficiency and low air resistance; the three-way catalyst comprises a shell, a first honeycomb baffle, a second honeycomb baffle and a three-way catalyst; the middle section of the shell is cylindrical, two ends of the shell are in a contracted circular truncated cone shape, a first honeycomb baffle and a second honeycomb baffle are arranged in the shell in parallel, and a three-way catalyst is filled in a cylindrical cavity formed by enclosing the shell, the first honeycomb baffle and the second honeycomb baffle together. The automobile exhaust pipe with high purification efficiency and low air resistance has the advantages of good purification effect, low air resistance and stable and reliable performance, and can efficiently catalyze and degrade harmful gases such as CO, HC, NOx and the like in automobile exhaust.
Description
Technical Field
The invention belongs to the technical field of automobile exhaust treatment, and particularly relates to an automobile exhaust pipe with high purification efficiency and low air resistance.
Background
Recently, the automobile industry in China gradually transits from the national five-emission standard to the national six-A emission standard, and the national six-B standard is implemented by 2023. At the moment, the standards of emissions such as carbon monoxide, hydrocarbons, non-methane total hydrocarbons, nitrogen and hydrogen compounds, PM particles and the like are greatly improved, which not only puts higher requirements on the automobile engine, but also brings new challenges to the purification technology of the automobile exhaust pipe.
The three-way catalyst is installed outside the automobile exhaust system and can convert CO, HC, NOx and other harmful gas in the high temperature automobile exhaust into harmless carbon dioxide, water and nitrogen via oxidation and reduction. The catalyst can simultaneously convert three main harmful substances in the exhaust gas into harmless substances, so the catalyst is called a three-way catalyst.
However, in the actual use process, the purification effect and the air resistance of the three-way catalyst are often a pair of contradictions, and under the condition that the type of the catalyst in the three-way catalyst is fixed, the amount of the catalyst is often increased to improve the purification effect, which can cause the increase of the air resistance and the increase of the fuel consumption of the automobile. It can be seen that the improvement of the emission standard is a big thing of moving the whole body by pulling, relating to the aspects of engines, exhaust pipes, combustion control and the like, and the optimization of the purification technology of the exhaust pipe is an economical and fast feasible path, so that the development and design of the automobile exhaust pipe with high purification efficiency and low air resistance by optimizing the internal structure and the active components of the three-way catalyst has important practical significance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the automobile exhaust pipe with high purification efficiency and low air resistance. The automobile exhaust pipe with high purification efficiency and low air resistance has the advantages of good purification effect, low air resistance and stable and reliable performance, and can obviously reduce the content of harmful gases such as CO, HC, NOx and the like in automobile exhaust.
In order to achieve the purpose, the invention is realized by the following technical scheme: an automobile exhaust pipe with high purification efficiency and low air resistance, comprising: the device comprises a particulate matter filter, a three-way catalyst, a middle silencer, a rear silencer and a tail pipe; the particulate filter, the three-way catalyst, the middle muffler, the rear muffler and the tail pipe are sequentially connected to form the automobile exhaust pipe with high purification efficiency and low air resistance; the three-way catalyst comprises a shell, a first honeycomb baffle, a second honeycomb baffle and a three-way catalyst; the middle section of the shell is cylindrical, two ends of the shell are in a contracted circular truncated cone shape, a first honeycomb baffle and a second honeycomb baffle are arranged in the shell in parallel, and a three-way catalyst is filled in a cylindrical cavity formed by enclosing the shell, the first honeycomb baffle and the second honeycomb baffle together. The tail gas generated by the combustion of the engine is filtered by a particulate filter to remove particles such as carbon, oil mist and the like, then enters a three-way catalytic converter to convert harmful gases such as CO, HC, NOx and the like into harmless carbon dioxide, water and nitrogen through oxidation and reduction, and is exhausted from a tail pipe after being silenced by a middle silencer and a rear silencer.
Further, in the exhaust pipe for the automobile with high purification efficiency and low air resistance, the three-way catalyst takes the SBA-15 mesoporous molecular sieve as a carrier, and one or more active components of platinum, palladium and rhodium are loaded on the carrier through a solution deposition method. The three-way catalyst consists of two parts, including carrier and active catalytic matter coated on the carrier. The active catalytic substance is usually selected from one or more of noble metals such as platinum, palladium and rhodium; the support is typically a porous ceramic. However, the porous ceramic carrier is a macroporous material, and the framework has no pores, so that the effective surface area for loading the active component is small, the dispersibility of the active component is low, and the full exertion of the purification effect is influenced. The automobile exhaust pipe with high purification efficiency and low air resistance provided by the invention takes the SBA-15 mesoporous molecular sieve as a carrier, the carrier is accumulated to form a large hole, and the carrier has abundant mesopores inside, so that a hierarchical pore structure is formed. Meanwhile, active components such as platinum, palladium, rhodium and the like can be uniformly loaded on the carrier by adopting a solution deposition method, so that the catalytic performance of the active components is fully exerted, and a better purification effect is achieved. In addition, because the carrier is of a multi-stage hole structure, the air resistance is small, and the automobile power is favorably improved and the oil consumption is reduced.
Further, in the exhaust pipe of the automobile with high purification efficiency and low air resistance, the active component preferably accounts for 1.0-2.5% of the total mass of the three-way catalyst.
As an improvement of the invention, the automobile exhaust pipe with high purification efficiency and low air resistance is characterized in that the SBA-15 mesoporous molecular sieve is internally doped with cerium element with the mass fraction of 0.1-0.2% in situ, and the cerium source is cerium nitrate. The cerium element doping is realized by adding a cerium source into a crystallization liquid for synthesizing the SBA-15 mesoporous molecular sieve by a hydrothermal method. Wherein, cerium is used as a cocatalyst and can assist the active substance to improve the oxygen storage capacity.
In a further improvement, the automobile exhaust pipe with high purification efficiency and low air resistance is characterized in that the reduction site in the framework of the SBA-15 mesoporous molecular sieve is doped with 0.2 mass percent of cesium, and the cesium source is cesium nitrate. The cesium doping is also realized by adding a cesium source into a crystallization liquid for synthesizing the SBA-15 mesoporous molecular sieve by a hydrothermal method. Cerium and cesium are cooperated to serve as a promoter, so that the oxygen storage capacity of the active substances can be further improved, and the purification effect is improved.
Preferably, in the exhaust pipe for an automobile with high purification efficiency and low air resistance, the three-way catalyst is packed in a particle stack shape in a cylindrical cavity defined by the housing, the first honeycomb baffle and the second honeycomb baffle. The three-way catalyst is filled in a particle accumulation shape, macropores are formed among particles, and mesopores are formed inside the particles, so that a high-efficiency hierarchical pore structure is formed.
Preferably, in the exhaust pipe for an automobile with high purification efficiency and low air resistance, the three-way catalyst is spherical particles with the particle size of 1.5-3.0 mm.
Preferably, in the exhaust pipe for an automobile with high purification efficiency and low air resistance, the three-way catalyst is arranged in parallel in a rod shape and is filled in a cylindrical cavity formed by the enclosure of the housing, the first honeycomb baffle and the second honeycomb baffle, and the direction of the three-way catalyst rod is parallel to the direction of the air flow. The three-way catalyst rod is perforated, and the inside of the three-way catalyst rod is mesoporous, so that a multi-level pore structure is formed.
Further, in the automobile exhaust pipe with high purification efficiency and low air resistance, the particulate filter is filled with high-temperature filter cotton.
Has the advantages that: compared with the prior art, the automobile exhaust pipe with high purification efficiency and low air resistance has the advantages of good purification effect, low air resistance and stable and reliable performance, and the purification efficiency of the exhaust pipe is obviously improved mainly by optimizing the structural layout in the three-way catalyst, improving the components of the catalyst and optimizing the pore structure of the catalyst, so that harmful gases such as CO, HC, NOx and the like in automobile exhaust can be more efficiently catalytically degraded by using fewer catalysts.
Drawings
FIG. 1 is a schematic structural diagram of an automobile exhaust pipe with high purification efficiency and low air resistance according to the present invention;
FIG. 2 is a schematic view of the internal structure of the three-way catalyst described in embodiment 1;
FIG. 3 is a schematic view of the internal structure of the three-way catalyst described in embodiment 2;
fig. 4 is a schematic cross-sectional view taken along plane a-a of fig. 3.
In the figure, a particulate filter 1, a three-way catalyst 2, a muffler 3, a rear muffler 4, a tail pipe 5, a casing 21, a first honeycomb panel 22, a second honeycomb panel 23, and a three-way catalyst 24 are shown.
Detailed Description
The invention will be further illustrated by the following specific examples, which are given for the purpose of illustration only and are not intended to be limiting.
Example 1
An exhaust pipe for an automobile, which has high purification efficiency and low air resistance, as shown in fig. 1 and 2, comprises: a particulate matter filter 1, a three-way catalyst 2, a middle muffler 3, a rear muffler 4 and a tail pipe 5; the particulate filter 1, the three-way catalyst 2, the middle muffler 3, the rear muffler 4 and the tail pipe 5 are sequentially connected to form the automobile exhaust pipe with high purification efficiency and low air resistance; the three-way catalyst 2 includes a housing 21, a first honeycomb panel 22, a second honeycomb panel 23, and a three-way catalyst 24; the middle section of the shell 21 is cylindrical, two ends of the shell are in a contracted circular truncated cone shape, a first honeycomb baffle 22 and a second honeycomb baffle 23 are arranged in the shell in parallel, and a three-way catalyst 24 is filled in a cylindrical cavity formed by enclosing the shell 21, the first honeycomb baffle 22 and the second honeycomb baffle 23 together.
In this embodiment, the three-way catalyst 24 uses SBA-15 mesoporous molecular sieve as a carrier, and three active components, namely platinum, palladium and rhodium, are loaded on the carrier by a solution deposition method.
In this embodiment, the active component accounts for 1.0-2.5% of the total mass of the three-way catalyst 24.
In this embodiment, the three-way catalyst 24 is packed in a particle stack shape in a cylindrical cavity enclosed by the housing 21, the first honeycomb baffle 22 and the second honeycomb baffle 23.
In this embodiment, the three-way catalyst 24 is a spherical particle with a particle size of 1.5-3.0 mm.
Example 2
An exhaust pipe for an automobile, which has high purification efficiency and low air resistance, as shown in fig. 1, 3 and 4, comprises: a particulate matter filter 1, a three-way catalyst 2, a middle muffler 3, a rear muffler 4 and a tail pipe 5; the particulate filter 1, the three-way catalyst 2, the middle muffler 3, the rear muffler 4 and the tail pipe 5 are sequentially connected to form the automobile exhaust pipe with high purification efficiency and low air resistance; the three-way catalyst 2 includes a housing 21, a first honeycomb panel 22, a second honeycomb panel 23, and a three-way catalyst 24; the middle section of the shell 21 is cylindrical, two ends of the shell are in a contracted circular truncated cone shape, a first honeycomb baffle 22 and a second honeycomb baffle 23 are arranged in the shell in parallel, and a three-way catalyst 24 is filled in a cylindrical cavity formed by enclosing the shell 21, the first honeycomb baffle 22 and the second honeycomb baffle 23 together.
In this embodiment, the three-way catalyst 24 uses SBA-15 mesoporous molecular sieve as a carrier, and rhodium active components are loaded on the carrier by a solution deposition method.
In this embodiment, the active component accounts for 1.0-2.5% of the total mass of the three-way catalyst 24.
In the embodiment, the SBA-15 mesoporous molecular sieve is doped with cerium element with the mass fraction of 0.1-0.2% in situ in the framework, and the cerium source is cerium nitrate.
In this embodiment, the reduction site in the framework of the SBA-15 mesoporous molecular sieve is doped with cesium element with a mass percentage of 0.2%, and the cesium source is cesium nitrate.
In this embodiment, the three-way catalyst 24 is arranged in parallel in a rod shape and is stacked and filled in a cylindrical cavity formed by the enclosure of the housing 21, the first honeycomb baffle 22 and the second honeycomb baffle 23, and the direction of the three-way catalyst rod is parallel to the direction of the airflow.
In this embodiment, the particulate filter 1 is further filled with high-temperature filter cotton.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (9)
1. The utility model provides a vehicle vent-pipe that purification efficiency height air-resistor is low which characterized in that: the method comprises the following steps: a particulate filter (1), a three-way catalyst (2), a middle muffler (3), a rear muffler (4) and a tail pipe (5); the particulate filter (1), the three-way catalyst (2), the middle muffler (3), the rear muffler (4) and the tail pipe (5) are sequentially connected to form the automobile exhaust pipe with high purification efficiency and low air resistance; the three-way catalyst (2) comprises a shell (21), a first honeycomb baffle plate (22), a second honeycomb baffle plate (23) and a three-way catalyst (24); the middle section of the shell (21) is cylindrical, two ends of the shell are in a contracted circular truncated cone shape, a first honeycomb baffle (22) and a second honeycomb baffle (23) are arranged in the shell in parallel, and a three-way catalyst (24) is filled in a cylindrical cavity formed by enclosing the shell (21), the first honeycomb baffle (22) and the second honeycomb baffle (23).
2. The exhaust pipe for an automobile with high purification efficiency and low air resistance according to claim 1, characterized in that: the three-way catalyst (24) takes SBA-15 mesoporous molecular sieve as a carrier, and one or more active components of platinum, palladium and rhodium are loaded on the carrier through a solution deposition method.
3. The exhaust pipe for an automobile with high purification efficiency and low air resistance according to claim 2, characterized in that: the active component accounts for 1.0-2.5% of the total mass of the three-way catalyst (24).
4. The exhaust pipe for an automobile having high purification efficiency and low air resistance according to claim 2 or 3, wherein: the SBA-15 mesoporous molecular sieve is characterized in that cerium with the mass fraction of 0.1-0.2% is doped in situ in a framework, and a cerium source is cerium nitrate.
5. The exhaust pipe for an automobile with high purification efficiency and low air resistance according to claim 4, wherein: the reduction site in the framework of the SBA-15 mesoporous molecular sieve is doped with cesium with the mass percent of 0.2%, and the cesium source is cesium nitrate.
6. The exhaust pipe for an automobile with high purification efficiency and low air resistance according to claim 5, wherein: the three-way catalyst (24) is filled in a cylindrical cavity formed by the enclosure (21), the first honeycomb baffle (22) and the second honeycomb baffle (23) in a particle accumulation mode.
7. The exhaust pipe for an automobile with high purification efficiency and low air resistance according to claim 6, wherein: the three-way catalyst (24) is spherical particles with the particle size of 1.5-3.0 mm.
8. The exhaust pipe for an automobile with high purification efficiency and low air resistance according to claim 5, wherein: the three-way catalysts (24) are arranged in parallel in a rod shape and are stacked and filled in a cylindrical cavity formed by the enclosure (21), the first honeycomb baffle (22) and the second honeycomb baffle (23), and the direction of the three-way catalyst rods is parallel to the direction of airflow.
9. The exhaust pipe for an automobile with high purification efficiency and low air resistance according to claim 5, wherein: the particulate filter (1) is filled with high-temperature filter cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083500.1A CN111206978A (en) | 2020-02-09 | 2020-02-09 | Automobile exhaust pipe with high purification efficiency and low air resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083500.1A CN111206978A (en) | 2020-02-09 | 2020-02-09 | Automobile exhaust pipe with high purification efficiency and low air resistance |
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| CN111206978A true CN111206978A (en) | 2020-05-29 |
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| CN202010083500.1A Pending CN111206978A (en) | 2020-02-09 | 2020-02-09 | Automobile exhaust pipe with high purification efficiency and low air resistance |
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| CN112302764A (en) * | 2020-10-12 | 2021-02-02 | 绍兴宾果科技有限公司 | Dynamic three-way catalytic mechanical arm automobile |
| CN112412583A (en) * | 2020-11-30 | 2021-02-26 | 重庆长安汽车股份有限公司 | Three way catalyst converter, engine exhaust assembly and car |
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|---|---|---|---|---|
| CN112302764A (en) * | 2020-10-12 | 2021-02-02 | 绍兴宾果科技有限公司 | Dynamic three-way catalytic mechanical arm automobile |
| CN112302764B (en) * | 2020-10-12 | 2022-05-06 | 绍兴宾果科技有限公司 | Dynamic three-way catalytic mechanical arm automobile |
| CN112412583A (en) * | 2020-11-30 | 2021-02-26 | 重庆长安汽车股份有限公司 | Three way catalyst converter, engine exhaust assembly and car |
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Application publication date: 20200529 |