CN213899082U - Motor vehicle tail gas purifying device - Google Patents
Motor vehicle tail gas purifying device Download PDFInfo
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- CN213899082U CN213899082U CN202022194519.1U CN202022194519U CN213899082U CN 213899082 U CN213899082 U CN 213899082U CN 202022194519 U CN202022194519 U CN 202022194519U CN 213899082 U CN213899082 U CN 213899082U
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Abstract
The utility model relates to a motor vehicle tail gas purification device, which comprises a plurality of linearly conducted processing units, wherein each processing unit is provided with a purification chamber, a tail gas contraction air inlet hole and a tail gas outlet expansion hole; venturi units which are fully distributed with Venturi holes are arranged in the purification chamber of each processing unit; the front end of the purification chamber in the processing unit is provided with at least one air inlet communicated to the outside, and the front end of the purification chamber of the head-end processing unit is communicated with the inner cavity of the exhaust hood through an external circulating pipe. The working method comprises the following steps: tail gas forms certain vacuum through tail gas shrink inlet port and venturi hole in the purification cavity, and the air gets into and purifies the cavity indoor and react with tail gas, and most tail gas of terminal processing unit flows back to head end processing unit along the circulation pipe, realizes tail gas purification treatment repeatedly, and is efficient, effectual.
Description
Technical Field
The utility model relates to a motor vehicle exhaust purification field is a motor vehicle exhaust purification device.
Background
The most common method for treating the tail gas of the existing automobile is to treat the tail gas by using a three-way catalyst, and the principle is that when the high-temperature tail gas of the motor vehicle passes through a purifying device, a purifying agent in the three-way catalyst enhances the activity of three gases of CO, HC and NOx to promote the three gases to carry out certain oxidation-reduction chemical reaction, wherein the CO is oxidized into colorless and nontoxic carbon dioxide gas at high temperature; oxidation of HC compounds to water (H) at high temperatures2O) and carbon dioxide; NOx is reduced to nitrogen and oxygen. Three kinds of harmful gases are changed into harmless gases, so that the automobile exhaust can be purified. The main disadvantage of the above purification device is that the heavy metals of platinum, rhodium and palladium used in the three-way catalyst are easy to cause heavy metal pollution to the environment. The requirement of the three-way catalyst on the temperature is high, when the gas temperature is too low, effective waste gas conversion cannot be carried out, and when the gas temperature is too high, the catalyst can be disabled, so that the working efficiency of the three-way catalyst is reduced. The three-way catalyst is not easy to match with an engine, and after the three-way catalyst is installed, the automobile cannot use lead-containing gasoline, cannot run rapidly for a long time, cannot enable the rotating speed of the engine to be suddenly and suddenly slow, cannot be started for a long time too late, cannot pull out a high-voltage wire for fire testing for a long time, and causes poor experience of users. Besides being expensive, the three-way catalyst also needs a certain amount of capital in the aspects of cleaning, repairing and the like, which results in higher cost for users. And the three-way catalytic purifier only achieves the purpose of reducing the tail gas pollution of the motor vehicle, and addresses the symptoms and does not address the root causes. For this reason, the existing motor vehicle exhaust gas is to be purifiedThe device is improved.
Disclosure of Invention
In order to overcome the defects, the utility model aims to provide a motor vehicle tail gas purification device to the field, which solves the technical problems of environmental pollution, short service life, low working efficiency, low universality, poor experience and high cost of the existing similar devices or systems. The purpose is realized by the following technical scheme.
The tail gas purification device for the motor vehicle is structurally characterized by comprising a Venturi system and a circulating pipe, wherein the Venturi system comprises at least two processing units which are linearly communicated and arranged, each processing unit is provided with a gas inlet end and a gas outlet end, a purification chamber is arranged between the gas inlet end and the gas outlet end, the gas inlet end is provided with a tail gas contraction gas inlet hole with the caliber gradually reduced along the gas inlet direction, the gas outlet end is provided with a tail gas outlet expansion hole with the caliber gradually increased along the gas outlet direction, the tail gas outlet expansion hole of the previous processing unit in the Venturi system is communicated and connected with the tail gas contraction gas inlet hole of the next processing unit, the tail gas outlet expansion hole end of the tail end processing unit is connected with a contraction exhaust hood with the caliber gradually reduced, and the tail end of the contraction exhaust hood is connected with an exhaust straight pipe; the purification chamber of each processing unit is internally provided with Venturi units which are overlapped and in a columnar shape in the direction from air inlet to air outlet, the peripheral surfaces of the Venturi units are tightly matched with the inner wall of the purification chamber, the Venturi units are fully provided with Venturi holes with the flow guide direction consistent with the direction from air inlet to air outlet of the processing unit, and the Venturi holes of the Venturi units are aligned and communicated; the purification chamber positioned at the front part of the Venturi unit in the head end processing unit in the Venturi system is communicated with the inner cavity of the contraction exhaust hood through the external circulating pipe; the purification chamber positioned at the front part of the Venturi unit in the processing unit is provided with at least one air inlet communicated to the outside, and the air inlet is externally connected with air.
Through the structure, when tail gas enters the Venturi system, the tail gas passes through the Venturi units of the processing units in sequence, and the tail gas purification processing is realized. Meanwhile, a more effective Venturi phenomenon is formed in the purification chambers of the processing units, so that air pressure difference is generated between the inside and the outside of the processing units, the purification chamber of the head end processing unit and the purification chamber of the tail end processing unit, and external air enters the purification chambers of the processing units through the air inlet holes, so that more effective treatment of tail gas is realized; most tail gas of the tail end treatment unit flows back to the treatment unit at the head end through the circulating pipeline, so that tail gas circulating purification is realized, and the efficiency and effect of tail gas treatment are improved.
The air inlet of the treatment unit is externally connected with an air and ozone generator. Through this structure, further let in ozone in to processing unit's the purification cavity to accelerate the physical and chemical reaction of air and tail gas, improve the tail gas treatment effect.
The venturi unit is cylindric, and the venturi hole of venturi unit is honeycomb arrangement. The cylindrical venturi unit is easy to manufacture and has good applicability, and the actual structural shape of the venturi unit is determined mainly by the shape of the inner cavity of the processing unit housing and is not limited to the cylindrical shape. The honeycomb arrangement of venturi hole helps to improve venturi unit's tail gas treatment efficiency and effect.
The inner walls of each processing unit and the circulating pipe of the Venturi system are provided with coatings with tail gas catalytic elements, and the materials of the Venturi unit are provided with the tail gas catalytic elements. Through this structure, further improve tail gas treatment efficiency and effect.
The air inlet end of the treatment unit is provided with a tapered air inlet cover, the tail gas contraction air inlet is formed in the air inlet cover, one part of the air inlet cover is exposed out of the front end of the treatment unit, and the other part of the air inlet cover extends into the purification chamber of the treatment unit. The structure is used as a specific scheme structure for processing the air inlet of the unit.
The end of giving vent to anger of processing unit is equipped with embedded toper gas outlet cover, forms promptly in the gas outlet cover the tail gas expansion hole of giving vent to anger, and this gas outlet cover stretches into completely in processing unit's the purification cavity, the macropore end of gas outlet cover is processing unit's tail end promptly for the gas through purifying the cavity stays certain time in gas outlet cover, makes the reaction of tail gas and air more abundant.
And a contraction and ventilation transition section with a gradually reduced caliber is connected between the tail gas outlet expansion hole end of the previous processing unit and the tail gas contraction and air inlet hole of the next processing unit in the Venturi system, and the caliber contraction amplitude of the contraction and ventilation transition section is greater than that of the tail gas contraction and air inlet hole. The systolic ventilation transition section is used for the butt joint of the previous processing unit and the next processing unit.
The venturi hole in the venturi unit includes the straight hole that admits air, handles the cavity and gives vent to anger straight hole, and admits air and be equipped with at least one processing cavity between the straight hole and the straight hole of giving vent to anger, and the front end inboard in each processing cavity all is equipped with one along admitting air to the shrinkage cavity that the direction bore of giving vent to anger diminishes, the shrinkage cavity front end of the processing cavity of head end with the straight hole of admitting air communicates with each other and is connected, terminal processing cavity tail end with the straight hole of giving vent to anger communicates with each other and is connected, wherein the shrinkage cavity front end that preceding processing cavity was handled the cavity in the adjacent processing cavity communicates with each other through straight hole and the next processing cavity. A large amount of air and tail gas carry out physics and chemical reaction again in the venturi hole, have strengthened the purifying effect of tail gas.
The utility model discloses overall structure is comparatively simple, and the environmental protection is durable, and tail gas treatment efficiency is high, the commonality is strong, long service life, experience sense is strong, with low costs, can effectively annihilate tail gas, and the tail gas cleanup unit who is fit for all kinds of motor vehicles uses, or the institutional advancement of the device of the same kind.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the venturi unit end face of the present invention.
Figure 3 is a schematic view of one of the venturi holes in the venturi unit of the present invention.
Fig. 4 is a schematic structural diagram of the second embodiment of the present invention.
Fig. 5 is a schematic diagram of the third structure of the embodiment of the present invention.
The sequence numbers and names in the figure are: 1. the device comprises a processing unit, 101, a tail gas contraction air inlet hole, 102, a purification chamber, 103, a tail gas outlet expansion hole, 104, an air inlet hole, 2, an air inlet cover, 3, an air outlet cover, 4, a Venturi unit, 401, a Venturi hole, 4011, an air inlet straight hole, 4012, a contraction hole, 4013, a processing chamber, 4014, a straight hole, 4015, an air outlet straight hole, 5, a circulating pipe, 6, a contraction exhaust cover, 7, an exhaust straight pipe, 8, a contraction ventilation transition section, 9 and an ozone generator.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1-3, the device for purifying tail gas of a motor vehicle comprises a venturi system and a circulating pipe 5, the venturi system comprises four processing units 1 which are arranged in a straight-line conduction manner, each processing unit is provided with an air inlet end and an air outlet end, and a cylindrical purifying chamber 102 is arranged between the air inlet end and the air outlet end. The air inlet end of the processing unit is provided with a tapered air inlet cover 2, a tail gas contraction air inlet 101 with the caliber gradually reduced along the air inlet direction is formed in the air inlet cover, one part of the air inlet cover is exposed out of the front end of the processing unit, and the other part of the air inlet cover extends into the purification chamber of the processing unit. The air outlet end of the processing unit is provided with an embedded conical air outlet cover 3, namely, an exhaust air outlet expanding hole 103 with gradually enlarged caliber along the air outlet direction is arranged in the air outlet cover, the air outlet cover completely extends into the purification cavity of the processing unit, and the large hole end of the air outlet cover is the tail end of the processing unit. The tail gas outlet expansion hole of the previous processing unit in the Venturi system is communicated and connected with the tail gas contraction air inlet hole of the next processing unit, the tail gas outlet expansion hole end of the tail end processing unit is connected with a contraction exhaust hood 6 with the gradually-reduced caliber, and the tail end of the contraction exhaust hood is connected with an exhaust straight pipe 7.
The purification chamber 102 of each processing unit 1 is internally provided with overlapped cylindrical venturi units 4 arranged from the air inlet direction to the air outlet direction, the peripheral surfaces of the venturi units are closely matched with the inner wall of the purification chamber, the venturi units are fully provided with venturi holes 401 arranged in a honeycomb shape and having the flow guide direction consistent with the air inlet direction to the air outlet direction of the processing unit, and the venturi holes of the venturi units are communicated in alignment. The venturi hole is including admitting air straight hole 4011, processing chamber 4013 and the straight hole 4015 of giving vent to anger, and admit air and be equipped with two processing chambers between the straight hole of giving vent to anger, front end inboard in each processing chamber all is equipped with one along admitting air to the shrink hole 4012 that gives vent to anger direction bore diminishes, the shrink hole front end of the processing chamber of head end communicates with each other with the straight hole that admits air and is connected, terminal processing chamber tail end communicates with each other with the straight hole of giving vent to anger and is connected, wherein the tail end of preceding processing chamber communicates with each other with the shrink hole front end of the next processing chamber through straight hole 4014 and is connected.
The purification chamber 102 at the front part of the venturi unit in the head end processing unit 1 of the venturi system is communicated with the inner cavity of the contraction and exhaust hood 6 through the external circulation pipe 5. The purification chamber in the treatment unit, which is located in front of the venturi unit 4, is provided with at least one air inlet 104 leading to the outside, which is used for introducing outside air.
In order to further improve the tail gas treatment efficiency and effect, the inner walls of each treatment unit 1 and the circulating pipe 5 of the venturi system are provided with coatings with tail gas catalytic elements, and the material of the venturi unit 4 is provided with the tail gas catalytic elements. In order to form a more effective venturi phenomenon in the processing unit, a contraction and ventilation transition section 8 with a gradually reduced caliber is connected between the end part of the tail gas outlet expansion hole 101 of the previous processing unit and the tail gas contraction and air inlet hole 103 of the next processing unit in the venturi system, and the caliber contraction amplitude of the contraction and ventilation transition section is greater than that of the tail gas contraction and air inlet hole. The diameter of the small hole port of the tail gas contraction air inlet hole in the former processing unit is larger than that of the small hole end of the tail gas contraction air inlet hole in the latter processing unit, and the diameter of the small hole port of the tail gas outlet expansion hole in the former processing unit is smaller than that of the small hole end of the tail gas outlet expansion hole in the latter processing unit.
The utility model discloses a wholly adopt the mode of vibration material disk to process the preparation, the involved formula of venturi system design as follows:
when the fluid passes through the reduced cross section, the fluid has a phenomenon of increasing flow velocity.
According to the bernoulli equation:
P+ρv2/2+ρgh＝C
p is the pressure at a point in the fluid; v is the flow rate of the fluid at that point; ρ is the fluid density;
g is the acceleration of gravity; h is the height of the point; c is a constant.
It can be deduced that: the flow rate increases and the pressure decreases.
Therefore, the fluid in the venturi system will increase in flow velocity as it passes through the exhaust gas inlet constricting orifice 101 and the venturi unit 4, and the increase in flow velocity will be accompanied by a decrease in ambient pressure, thereby creating a "vacuum" in the decontamination chamber 102, creating a pressure differential with the outside.
According to the following steps:
p＝ρRT
m＝ρAv＝(π/4)dρv
M＝v/a
p is the intake pressure, Pa; rho is intake density, kg/m3(ii) a R is a gas constant, J/(kg. K);
t is the inlet air temperature, K; m is the inlet flow, kg/s;
a is the sum of the cross sections of all air inlet straight holes 4011 in a single Venturi unit, m2；
d is the sum of the diameters of all the air inlet straight holes 4011 in a single Venturi unit, m; v is the inlet flow velocity, m/s; a is the local speed of sound, m/s;
k is specific heat ratio, and air is 1.4; m is an intake Mach number.
According to the formula, the structural parameters of the Venturi system can be calculated.
The utility model discloses the cavitation phenomenon of well application:
cavitation refers to the hydrodynamic phenomena of cavitation generation, growth and collapse that occur when a fluid passes through a throttling element as the flow rate of the fluid increases, the pressure decreases, and the local pressure in the liquid is lower than the saturated vapor pressure at the corresponding temperature. Cavitation can be used to promote chemical reactions, break up suspended matter in the liquid, kill bacteria, and the like.
Fluid in the motor vehicle exhaust purification device is accelerated due to the Venturi effect, and high-speed fluid impacts and rubs, so that liquid in the fluid generates a cavitation phenomenon, and the cavitation promotes chemical reaction generated when exhaust is purified.
As shown in fig. 1, according to the first embodiment of the present invention, the venturi unit 4 is made of stainless steel, aluminum or ceramic, and only utilizes the venturi effect to annihilate the exhaust gas. The working method comprises the following steps: tail gas of the motor vehicle enters a Venturi system and sequentially enters each processing unit 1 of the Venturi system, and the Venturi units purify the tail gas; when the tail gas passes through the tail gas inlet contraction hole 101 of each processing unit and the venturi hole 401 of the venturi unit, the flow speed of the tail gas is increased, a certain vacuum degree is generated in the purification chamber 102 of the processing unit due to the venturi phenomenon, a stable air pressure difference is generated between the purification chamber of the head end processing unit and the purification chamber of the tail end processing unit, meanwhile, an air pressure difference is formed between the purification chamber of the head end processing unit and the purification chamber of the tail end processing unit, so that external air enters the purification chamber along the air inlet hole 104, the tail gas and a large amount of air form multiple physical and chemical reactions in the venturi system, a part of the tail gas flowing through the tail end processing unit is discharged through the exhaust straight pipe 7, and most of the tail gas flows back to the purification chamber of the head end processing unit along the circulating pipe 5, and the aim of repeated purification treatment of the tail gas is achieved.
As shown in fig. 4, according to the second embodiment of the present invention, the venturi unit 4 is made of stainless steel, aluminum or ceramic, and ozone annihilation exhaust gas is injected by venturi effect and single port, i.e. the air inlet hole 104 of the head end processing unit 1 is externally connected to the air and ozone generator 9. The working method comprises the following steps: tail gas of the motor vehicle enters the Venturi system and sequentially enters each processing unit of the Venturi system, and the Venturi unit purifies the tail gas; when tail gas passes through the tail gas inlet contraction hole 101 of each processing unit and the Venturi hole 401 of the Venturi unit, the flow speed of the tail gas is increased, a certain vacuum degree is generated in the purification chamber 102 of the processing unit due to the Venturi phenomenon, a stable air pressure difference is generated between the purification chamber 102 of the processing unit at the front end and the purification chamber of the tail end processing unit, meanwhile, the air pressure difference is formed between the purification chamber of the head end processing unit and the purification chamber of the tail end processing unit, so that external air enters the purification chamber along the air inlet hole, meanwhile, the ozone generator injects ozone into the purification chamber of the corresponding processing unit along the air inlet hole, the tail gas and a large amount of air form multiple physical and chemical reactions in the Venturi system, the ozone enables the reactions to be more sufficient, and the purification degree of the tail gas is higher; a part of tail gas flowing through the tail end treatment unit is discharged through the exhaust straight pipe 7, and most of the tail gas flows back to the purification cavity of the head end treatment unit along the circulating pipe 5, so that the aim of repeatedly purifying the tail gas is fulfilled.
As shown in fig. 5, in the third embodiment of the present invention, the venturi unit 4 is made of stainless steel, aluminum or ceramic, and ozone annihilation exhaust is injected by using the venturi effect and multiple interfaces, that is, the air inlet holes 104 of each processing unit 1 in the venturi system are all externally connected to the air and the ozone generator 9. The working method comprises the following steps: tail gas of the motor vehicle enters the Venturi system and sequentially enters each processing unit of the Venturi system, and the Venturi unit purifies the tail gas; when tail gas passes through the tail gas inlet contraction hole 101 of each processing unit and the Venturi hole 401 of the Venturi unit, the flow speed of the tail gas is increased, a certain vacuum degree is generated in the purification chamber 102 of the processing unit due to the Venturi phenomenon, a stable air pressure difference is generated between the purification chamber 102 of the processing unit at the front end and the purification chamber of the tail end processing unit, meanwhile, the air pressure difference is formed between the purification chamber of the head end processing unit and the purification chamber of the tail end processing unit, so that external air enters the purification chambers along the air inlet holes, meanwhile, the ozone generator injects ozone into the purification chambers of the processing units along the air inlet holes, the tail gas and a large amount of air form multiple physical and chemical reactions in the Venturi system, the ozone promotes the reactions to be more sufficient, and the tail gas purification degree is higher; and a part of tail gas flowing through the tail end treatment unit is discharged through the exhaust straight pipe, and most of the tail gas flows back to the purification chamber of the head end treatment unit along the circulating pipe, so that the aim of repeatedly purifying the tail gas is fulfilled.
Based on the first, second and third embodiments, if the inner walls of the processing unit 1 and the circulating pipe 5 of the venturi system are provided with the coating with the exhaust gas catalytic element, and the material of the venturi unit 4 is provided with the exhaust gas catalytic element, the exhaust gas catalytic element can be utilized to make the physical and chemical reaction between the exhaust gas and the air more sufficient, thereby further improving the exhaust gas processing efficiency and effect.
The above contents are intended to illustrate the technical means of the present invention, and do not limit the technical scope of the present invention. Obvious modifications or substitutions for the present invention by a person of ordinary skill in the art in combination with the prior art are also within the scope of the present invention as claimed.
Claims (8)
1. The tail gas purification device of the motor vehicle is characterized by comprising a Venturi system and a circulating pipe (5), wherein the Venturi system comprises at least two processing units (1) which are linearly communicated and arranged, each processing unit is provided with a gas inlet end and a gas outlet end, a purification chamber (102) is arranged between the gas inlet end and the gas outlet end, the gas inlet end is provided with a tail gas contraction gas inlet hole (101) with the caliber gradually reduced along the gas inlet direction, the gas outlet end is provided with a tail gas outlet expansion hole (103) with the caliber gradually increased along the gas outlet direction, the tail gas outlet expansion hole of the previous processing unit in the Venturi system is communicated and connected with the tail gas contraction gas inlet hole of the next processing unit, the tail gas outlet expansion hole end of the tail end processing unit is connected with a contraction exhaust hood (6) with the caliber gradually reduced, and the tail end of the contraction exhaust hood is connected with an exhaust straight pipe (7); the purification chamber of each processing unit is internally provided with Venturi units (4) which are overlapped and are columnar in an arrangement mode from air inlet to air outlet, the peripheral surfaces of the Venturi units are tightly matched with the inner wall of the purification chamber, the Venturi units are fully provided with Venturi holes (401) with the flow guide directions consistent with the air inlet to air outlet directions of the processing units, and the Venturi holes of the Venturi units are communicated in an alignment mode; the purification chamber positioned at the front part of the Venturi unit in the head end processing unit in the Venturi system is communicated with the inner cavity of the contraction exhaust hood through the external connection of the circulating pipe (5); the purification chamber positioned at the front part of the Venturi unit in the processing unit is provided with at least one air inlet (104) communicated to the outside, and the air inlet is externally connected with air.
2. The motor vehicle exhaust gas purification device according to claim 1, characterized in that the inlet holes (104) of the treatment unit (1) are externally connected with an air and ozone generator (9).
3. The motor vehicle exhaust gas purification device according to claim 1, wherein the venturi unit (4) is cylindrical, and the venturi holes (401) of the venturi unit are arranged in a honeycomb shape.
4. The motor vehicle exhaust purification device according to claim 1, wherein the inner walls of the treatment unit (1) and the circulation pipe (5) of the venturi system are provided with coatings with exhaust catalytic elements, and the material of the venturi unit (4) is provided with exhaust catalytic elements.
5. The motor vehicle exhaust gas purification device according to claim 1, wherein the inlet end of the treatment unit (1) is formed into a tapered inlet hood (2), the inlet hood is formed with the exhaust gas contraction inlet hole (101), and one part of the inlet hood is exposed out of the front end of the treatment unit, and the other part of the inlet hood extends into the purification chamber (102) of the treatment unit.
6. The motor vehicle exhaust gas purification device according to claim 1, wherein the exhaust end of the treatment unit (1) is provided with an embedded conical exhaust cover (3), namely, the exhaust cover is internally provided with the exhaust gas exhaust expansion hole (103), the exhaust cover completely extends into the purification chamber (102) of the treatment unit, and the large hole end of the exhaust cover is the tail end of the treatment unit.
7. The motor vehicle exhaust purification device according to claim 1, wherein a contraction and ventilation transition section (8) with a gradually reduced caliber is connected between the end of the exhaust gas outlet expansion hole (103) of the previous processing unit (1) and the exhaust gas contraction and air inlet hole (101) of the next processing unit in the venturi system, and the caliber contraction amplitude of the contraction and ventilation transition section is greater than the caliber contraction amplitude of the exhaust gas contraction and air inlet hole.
8. The motor vehicle exhaust gas purification device according to claim 1, wherein the venturi holes in the venturi unit (4) comprise a straight inlet hole (4011), a treatment chamber (4013) and a straight outlet hole (4015), at least one treatment chamber is arranged between the straight inlet hole and the straight outlet hole, a contraction hole (4012) with a gradually reduced caliber along the direction from inlet to outlet is arranged inside the front end of each treatment chamber, the front end of the contraction hole of the treatment chamber at the front end is communicated and connected with the straight inlet hole, the tail end of the treatment chamber at the tail end is communicated and connected with the straight outlet hole, and the tail end of the previous treatment chamber in the adjacent treatment chambers is communicated and connected with the front end of the contraction hole of the next treatment chamber through the straight inlet hole (4014).
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| CN202022194519.1U CN213899082U (en) | 2020-09-29 | 2020-09-29 | Motor vehicle tail gas purifying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112267928A (en) * | 2020-09-29 | 2021-01-26 | 泉州信息工程学院 | Motor vehicle tail gas purification device and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112267928A (en) * | 2020-09-29 | 2021-01-26 | 泉州信息工程学院 | Motor vehicle tail gas purification device and working method thereof |
| CN112267928B (en) * | 2020-09-29 | 2024-07-12 | 泉州信息工程学院 | Motor vehicle tail gas purifying device and working method thereof |
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