Exhaust treatment system and vehicle

Abstract

The application relates to the technical field of vehicle exhaust treatment, and provides an exhaust treatment system and a vehicle. The exhaust treatment system comprises a particle trap and a regeneration device, the regeneration device comprises an oil-gas mixing part, a gas path assembly and an oil path assembly, and a fluid driving part connected between the oil-gas mixing part and the particle trap, and the fluid driving part can drive an oil-gas mixture in the oil-gas mixing part to flow into the particle trap. The exhaust treatment system provided by the application sets one fluid driving part, which can facilitate the smooth flow of exhaust gas and fuel into the oil-gas mixing part, the exhaust treatment system has a simple structure, and the oil-gas mixture can smoothly flow to the downstream, which is helpful for the combustion regeneration of the particle trap, has a good exhaust treatment effect, and can reduce the emission of pollutants.

Description

Technical Field

[0001] This application relates to the field of vehicle exhaust treatment technology, and particularly to an exhaust treatment system. This application also relates to a vehicle using this exhaust treatment system. Background Technology

[0002] The GPF (Gasoline Particulate Filter) is a crucial component of a vehicle's exhaust system. During operation, particulate matter accumulates within the GPF, affecting its filtration capacity. To ensure the GPF's filtration efficiency...

[0003] Currently, GPF overload is typically detected in real time. When GPF overload is detected, a particulate filter regeneration device is required to regenerate the particulate filter. However, existing regeneration devices usually use an airflow drive mechanism to force exhaust gas into the particulate filter, while simultaneously using a liquid drive mechanism to force fuel into the particulate filter. Such regeneration devices suffer from drawbacks such as complex structure and poor particulate filter regeneration effect. Utility Model Content

[0004] In view of this, this application aims to propose an exhaust treatment system with a simple structure that can effectively regenerate the particulate filter.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] An exhaust gas treatment system includes a particulate filter and a regeneration device for regenerating the particulate filter.

[0007] The regeneration device includes an oil-gas mixing section, a gas path assembly that directs exhaust gas into the oil-gas mixing section, a liquid path assembly that directs fuel into the oil-gas mixing section, and a fluid driving section connecting the oil-gas mixing section and the particulate filter, the fluid driving section being able to drive the oil-gas mixture in the oil-gas mixing section to flow into the particulate filter.

[0008] Furthermore, the particulate trap includes an inlet cone, a fluid mixing section, and a fluid processing section connected in sequence;

[0009] The intake cone is connected to the catalytic converter assembly and the fluid drive section respectively. The fluid mixing section mixes the treated exhaust gas from the catalytic converter assembly with the oil-gas mixture driven by the fluid drive section, and then transports it to the fluid treatment section for purification before discharge.

[0010] Furthermore, the intake cone is provided with a first inlet and a second inlet. The first inlet is for the treated exhaust gas from the catalytic converter assembly to flow to the intake cone, and the second inlet is for the oil-gas mixture in the oil-gas mixing section to flow to the intake cone.

[0011] The fluid mixing section mixes the treated waste gas and the oil-gas mixture that flow in through the air inlet cone, and the fluid treatment section purifies the mixed treated waste gas and oil-gas mixture before discharging it.

[0012] Furthermore, the fluid mixing section includes a first housing, and a first flow equalization plate, a swirling tube, and a second flow equalization plate disposed within the first housing;

[0013] The first flow equalization plate, the vortex tube, and the second flow equalization plate are arranged sequentially along the flow direction of the fluid inside the first housing.

[0014] Furthermore, the fluid processing unit includes a second housing and a particle purification unit disposed within the housing;

[0015] Along the flow direction of the fluid inside the second housing, the upstream and downstream of the particle purification unit are respectively provided with a pressure stabilizing section and a rear cone.

[0016] Furthermore, a gasket is provided inside the second housing, and the gasket is fitted around the outer periphery of the particulate purification unit.

[0017] Furthermore, the gas path assembly includes an intake pipe that introduces the exhaust gas into the oil-gas mixing section, and a first control valve disposed on the intake pipe, the first control valve being capable of controlling the opening and closing of the intake pipe.

[0018] Furthermore, the fluid circuit assembly includes an inlet pipe for introducing the fuel into the fuel-air mixture section, and a second control valve disposed on the inlet pipe, the second control valve being capable of controlling the opening and closing of the inlet pipe.

[0019] Furthermore, the fluid drive unit includes a gas compressor.

[0020] Compared with related technologies, this application has the following advantages:

[0021] (1) The exhaust treatment system described in this application can generate negative pressure in the oil-gas mixing section through the fluid driving section, so that the exhaust gas can smoothly enter the oil-gas mixing section through the gas path component, and the fuel can smoothly enter the oil-gas mixing section through the liquid path component. This allows the exhaust gas and fuel to initially mix in the oil-gas mixing section to form an oil-gas mixture, which is conducive to the smooth combustion of the oil-gas mixture downstream, thereby improving the regeneration effect of the particulate filter and reducing pollutant emissions. In addition, the fluid driving section facilitates the simultaneous and smooth flow of exhaust gas and fuel into the oil-gas mixing section, making the exhaust treatment system simple in structure and enabling the oil-gas mixture to flow smoothly downstream, which is conducive to the combustion and regeneration of the particulate filter and has a better exhaust treatment effect.

[0022] (2) The inlet cone facilitates the uniform mixing of oil-gas mixture and exhaust gas. The fluid mixing section enables the two to be further mixed, while the fluid treatment section can better capture particles in the oil-gas mixture. Through the coordinated design of the inlet cone, fluid mixing section and fluid treatment section, the efficiency of exhaust gas treatment can be improved and the pollutant emissions can be reduced.

[0023] (3) The particulate filter can further improve the efficiency of exhaust gas treatment by using the dual-inlet design of the inlet cone, the enhanced mixing of the fluid mixing section and the deep purification of the fluid treatment section. This reduces the pollutants in the exhaust gas after treatment by the exhaust gas treatment system, and at the same time makes the exhaust gas treatment system have a stable exhaust gas treatment effect.

[0024] (4) The fluid mixing section can achieve efficient and uniform mixing of waste gas and oil-gas mixture by setting a first flow equalization plate, a swirling tube and a second flow equalization plate in the first housing, which provides support for the deep purification of the subsequent fluid treatment section.

[0025] (5) The fluid treatment unit can achieve efficient purification of mixed gas, pressure stabilization and airflow field optimization by setting a particle purification unit in the second shell and setting a pressure stabilizing unit and a rear cone in the upstream and downstream of the particle purification unit, respectively, thus providing a guarantee for the regeneration performance of the particle trap and the improvement of the exhaust gas treatment performance.

[0026] (6) A gasket is added inside the second housing of the fluid processing unit and the gasket is also placed on the outer periphery of the particle purification unit. This can achieve functions such as sealing and isolation, thermal protection, and mechanical buffering, and significantly improve the reliability, durability and performance stability of the purification system.

[0027] (7) By simultaneously setting up an intake pipe and a first control valve, the air circuit assembly can achieve precise flow control and dynamic response optimization of the exhaust gas introduced into the oil-gas mixing section, thereby improving engine combustion efficiency and reducing pollutant emissions.

[0028] (8) The hydraulic circuit assembly, through the coordinated design of the inlet pipe and the second control valve, can achieve precise metering of fuel introduced into the oil-gas mixture and dynamic response optimization, thereby further improving engine combustion efficiency and reducing pollutant emissions.

[0029] (9) When the fluid drive unit uses a gas compressor, its core function is to generate negative pressure so that fuel and exhaust gas can smoothly enter the oil-gas mixing unit, so that fuel and exhaust gas can be mixed well. It can also form a high-pressure power source by compressing the mixture of exhaust gas and oil mist, and drive the oil-gas mixture to flow smoothly in the subsequent processing.

[0030] Another object of this application is to provide a vehicle equipped with an exhaust treatment system as described above.

[0031] The vehicle described in this application, by applying the aforementioned exhaust treatment system and incorporating a fluid drive unit, allows exhaust gases to smoothly enter the oil-gas mixing unit via the gas path components. The exhaust treatment system has a simple structure and enables the oil-gas mixture to flow smoothly downstream, facilitating its combustion and improving the regeneration effect of the particulate filter. This results in a better exhaust treatment effect, significantly reducing pollutant emissions and enhancing the vehicle's market competitiveness. Attached Figure Description

[0032] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0033] Figure 1 This is an exemplary structural diagram of the regeneration device described in an embodiment of this application;

[0034] Figure 2 This is an exemplary structural diagram of the particle trap described in the embodiments of this application;

[0035] Figure 3 for Figure 2 A structural diagram from another perspective;

[0036] Figure 4 For along Figure 3 Sectional view of line AA in the middle;

[0037] Figure 5 This is an exemplary assembly diagram of the first flow equalization plate, the vortex tube, and the second flow equalization plate described in the embodiments of this application;

[0038] Figure 6 for Figure 5 A structural diagram from another perspective.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Particle trap;

[0041] 101. Inlet cone; 102. Fluid mixing section; 103. Fluid handling section; 104. Exhaust pipe; 105. Outlet flange; 106. Inlet flange; 107. Inlet pipe assembly; 108. Bellows;

[0042] 1011, First Import; 1012, Second Import;

[0043] 1021. First housing; 1022. First flow equalization plate; 1023. Swirl tube; 1024. Second flow equalization plate; 1025. Hook;

[0044] 10221, First via;

[0045] 10231, Second via; 10232, First guide plate;

[0046] 10241, Third via; 10242, Second guide plate; 10243, Fourth via;

[0047] 1031. Second housing; 1032. Particle purification unit; 1033. Voltage stabilizer; 1034. Rear end cone; 1035. Gasket;

[0048] 2. Regeneration device;

[0049] 201. Oil-gas mixing section; 202. Gas circuit assembly; 203. Liquid circuit assembly; 204. Fluid driving section; 205. Gas supply section; 206. Liquid supply section;

[0050] 2021, Intake pipe; 2022, First control valve;

[0051] 2031, Liquid inlet line; 2032, Second control valve;

[0052] 3. Catalytic converter assembly. Detailed Implementation

[0053] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0055] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0057] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0059] An embodiment of the first aspect of this application provides an exhaust gas treatment device, which, through improvements in its own structure and the arrangement of its components, has a simple structure and produces a good regeneration effect on the particulate filter. When applied to vehicles, it helps to improve the treatment effect on exhaust gases.

[0060] The particulate filter is an important component of the vehicle exhaust system. During the operation of the particulate filter, particulate matter in the exhaust gas accumulates and remains on the porous media wall of the filter body as it passes through, thereby capturing and filtering particulate matter in the exhaust gas.

[0061] As particulate matter is used over time, it accumulates. To maintain the filtration capacity of the particulate matter filter, it is currently common practice to monitor for overload in real time. When overload is detected, the particulate matter filter needs to be regenerated.

[0062] The so-called particulate filter regeneration refers to the process of removing accumulated particulate matter from the filter. This is generally achieved by oxidizing the particulate matter through high-temperature combustion or the action of a catalyst, thereby restoring the filter's filtration performance to ensure normal engine operation and reduce exhaust emissions.

[0063] Existing regeneration devices typically use an airflow-driven mechanism to drive exhaust gas into the particulate filter, while simultaneously using a liquid-driven mechanism to drive fuel into the particulate filter. Such regeneration devices suffer from drawbacks such as complex structure and poor particulate filter regeneration efficiency.

[0064] In view of this, in order to overcome the shortcomings of related technologies, the exhaust treatment system of this embodiment combines... Figures 1 to 4 As shown, the overall design mainly includes a particle trap 1 and a regeneration device 2 for regenerating the particle trap 1.

[0065] The regeneration device 2 mainly includes an oil-gas mixing section 201, an air passage assembly 202, a liquid passage assembly 203, and a fluid driving section 204. The air passage assembly 202 directs exhaust gas into the oil-gas mixing section 201, and the liquid passage assembly 203 directs fuel oil into the oil-gas mixing section 201. The fluid driving section 204 connects the oil-gas mixing section 201 and the particulate filter 1, and drives the oil-gas mixture in the oil-gas mixing section 201 into the particulate filter 1.

[0066] In one example, the oil-gas mixing section 201 includes a housing with an oil-gas mixing chamber, and two inlets and one outlet disposed on the housing, the two inlets and the outlet respectively communicating with the oil-gas mixing chamber inside the housing. Preferably, the two inlets are located on opposite sides of the oil-gas mixing section 201, which is beneficial to improving the mixing effect of exhaust gas and fuel.

[0067] It should be noted that one end of the gas path assembly 202 is connected to one inlet of the air-fuel mixture section 201, and the other end of the gas path assembly 202 is connected to the air supply section 205. The air supply section 205 can be, for example, the exhaust pipe 104 of a particulate filter, or it can be the catalytic converter assembly 3. In this case, the other end of the gas path assembly 202 is connected to the outlet of the exhaust pipe 104 or the catalytic converter assembly 3, so that the gas path assembly 202 can smoothly introduce exhaust gas into the air-fuel mixture section 201.

[0068] It should be understood that exhaust gas can also be introduced into the air passage assembly 202 from other locations. In this case, the air supply unit 205 may use, for example, the air intake pipe assembly 107, the bellows 108, etc.

[0069] It should also be noted that one end of the hydraulic circuit assembly 203 is connected to one inlet of the fuel-air mixture section 201, and the other end of the hydraulic circuit assembly 203 is connected to the fuel supply section 206. In one example, the fuel supply section 206 may be a fuel supply line in the vehicle's fuel system. In this case, the other end of the hydraulic circuit assembly 203 is connected to the fuel supply line in the vehicle's fuel system, which allows the hydraulic circuit assembly 203 to smoothly inject fuel into the fuel-air mixture section 201.

[0070] The exhaust treatment system described in this application, through the fluid drive unit 204, can generate negative pressure in the oil-gas mixing unit 201, thereby allowing exhaust gas to smoothly enter the oil-gas mixing unit 201 via the gas passage assembly 202, and fuel to smoothly enter the oil-gas mixing unit 201 via the liquid passage assembly 203. This allows the exhaust gas and fuel to initially mix in the oil-gas mixing unit 201 to form an oil-gas mixture, which is beneficial for the smooth combustion of the oil-gas mixture downstream, thereby improving the regeneration effect of the particulate filter 1 and effectively reducing pollutant emissions.

[0071] Furthermore, the exhaust treatment system of this embodiment is provided with only one fluid driving unit 204. The negative pressure generated at the inlet of the fluid driving unit 204 can be used to allow exhaust gas and fuel to flow smoothly into the oil-gas mixing unit 201 at the same time. This makes the exhaust treatment system simple in structure and allows the oil-gas mixture to flow smoothly downstream, resulting in a better exhaust treatment effect.

[0072] To achieve better exhaust treatment results, it is still necessary to refer to... Figures 1 to 4 As shown, in some preferred embodiments, the particulate trap 1 includes an air inlet cone 101, a fluid mixing section 102, and a fluid processing section 103 connected in sequence.

[0073] The intake cone 101 is connected to the catalytic converter assembly 3 and the fluid driving section 204 respectively. The fluid mixing section 102 mixes the treated exhaust gas processed by the catalytic converter assembly 3 with the oil-gas mixture driven by the fluid driving section 204, and then transports it to the fluid treatment section 103 for purification before discharge.

[0074] It should be noted that the intake cone 101 adopts a specific conical structure. The intake cone 101 is used to guide the treated exhaust gas discharged from the catalytic converter assembly 3 into the fluid mixing section 102 evenly. The design of the intake cone 101 can eliminate the inlet vortex phenomenon and allow the airflow to complete the pre-acceleration process.

[0075] In this embodiment, the intake cone 101 can still adopt the structure in the prior art. In this application, a first inlet 1011, a second inlet 1012 and an outlet need to be provided on the intake cone 101. The shape of the intake cone 101 and the positions of the first inlet 1011 and the outlet still refer to the structure in the prior art. The orientation of the second inlet 1012 is opposite to that of the outlet, so that the airflow entering the intake cone 101 from the second inlet 1012 can flow out from the outlet.

[0076] The fluid mixing unit 102 thoroughly mixes the exhaust gas treated by the catalytic converter assembly 3 with the oil-gas mixture injected by the fluid driving unit 204 using a preset mixing method, such as laminar flow, turbulent flow, or swirling flow. The fluid treatment unit 103 typically employs a wall-flow ceramic filter to capture particulate matter through diffusion, interception, gravity, and inertia.

[0077] In one example, the outer wall of the fluid mixing section 102 is provided with a hook 1025 to facilitate the installation of the exhaust treatment system on the vehicle body.

[0078] When particulate matter accumulates to a certain level in the particulate filter 1, the exhaust treatment system starts the regeneration program. For specific control methods such as when and how the regeneration program starts, please refer to the methods in relevant technologies.

[0079] In the above implementation, the coordinated design of the intake cone 101, the fluid mixing section 102 and the fluid processing section 103 can achieve the technical effects of improving exhaust gas treatment efficiency, reducing pollutant emissions and enhancing the stability of exhaust gas treatment effect.

[0080] In some preferred embodiments, the intake cone 101 is provided with a first inlet 1011 and a second inlet 1012. The first inlet 1011 is used to supply the treated exhaust gas from the catalytic converter assembly 3 to the intake cone 101, and the second inlet 1012 is used to supply the oil-gas mixture in the oil-gas mixing section 201 to the intake cone 101.

[0081] After entering the intake cone 101, the treated exhaust gas and oil-gas mixture are mixed once inside the intake cone 101. The aforementioned fluid mixing section 102 mixes the treated exhaust gas and oil-gas mixture that flow into the fluid mixing section 102 through the intake cone 101. The fluid treatment section 103 purifies the mixed treated exhaust gas and oil-gas mixture before discharging it.

[0082] It should be noted that the first inlet 1011 is connected to the outlet of the existing catalytic converter assembly 3. After being treated by the catalytic converter assembly 3, the exhaust gas enters the intake cone 101 from the first inlet 1011 and enters the fluid mixing section 102 from the outlet of the intake cone 101.

[0083] In one example, the outlet of the catalytic converter assembly 3 is connected to the first inlet 1011 via an inlet flange 106, an inlet pipe assembly 107, and a bellows 108. The structure and connection method of the inlet flange 106, the inlet pipe assembly 107, and the bellows 108 can refer to the methods in related technologies.

[0084] The second inlet 1012 is connected to the outlet of the aforementioned fluid driving section 204. The fluid driving section 204 can drive the mixture of fuel and exhaust gas in the oil-gas mixing section 201 to enter the intake cone 101 through the second inlet 1012, and then enter the fluid mixing section 102 from the outlet of the intake cone 101.

[0085] In a preferred embodiment, an air inlet pipe is provided on the side of the air inlet cone 101 facing away from the outlet. The air inlet pipe is connected to the second inlet 1012 of the air inlet cone 101 to facilitate communication with the outlet of the fluid driving part 204.

[0086] In a preferred example, the axial centerline of the second inlet 1012 is coaxial with the axial centerline of the fluid mixing section 102, which is beneficial to improving the mixing effect of the oil-gas mixture entering the intake end cone 101 and the treated exhaust gas.

[0087] The particulate filter 1 described above, through the dual-inlet design of the inlet cone 101, the enhanced mixing of the fluid mixing section 102, and the deep purification of the fluid treatment section 103, can further improve the efficiency of exhaust gas treatment, thereby reducing the pollutants in the exhaust gas discharged after treatment by the exhaust gas treatment system, and at the same time enabling the exhaust gas treatment system to have a stable exhaust gas treatment effect.

[0088] To achieve a better mixing effect, in some preferred embodiments, reference is made to... Figure 5 and Figure 6 As shown, the fluid mixing section 102 includes a first housing 1021, and a first flow equalization plate 1022, a swirling tube 1023, and a second flow equalization plate 1024 disposed within the first housing 1021. The first flow equalization plate 1022, the swirling tube 1023, and the second flow equalization plate 1024 are arranged sequentially along the flow direction of the fluid within the first housing 1021.

[0089] In this embodiment, the first housing 1021 is sleeve-shaped and has a circular cross-section. As the main structure of the fluid mixing section 102, the two ends of the first housing 1021 are respectively connected to the air inlet cone 101 and the fluid processing section 103, thereby providing a receiving space in which the first flow equalization plate 1022, the swirl tube 1023, and the second flow equalization plate 1024 are all received.

[0090] In detail, the first flow equalization plate 1022 is annular, and has multiple first through holes 10221 distributed throughout it. The first flow equalization plate 1022 is located at the inlet end of the first housing 1021 and is disposed adjacent to the outlet of the inlet cone 101. This porous structure with multiple first through holes 10221 transforms the mixed gas flow output from the inlet cone 101 into laminar flow, reducing the velocity gradient and providing a uniform base flow for subsequent mixing. It should be understood that the shape of the first through holes 10221 can also be other shapes, such as triangular, trapezoidal, or square.

[0091] When the oil-gas mixture enters the fluid mixing section 102, it is first broken into smaller particles by the shearing action of multiple channels on the first flow equalization plate 1022, so as to facilitate complete combustion in the subsequent process and thus improve the regeneration effect.

[0092] The cyclone tube 1023 is sleeve-shaped with a circular cross-section, and its diameter is the same as the inner diameter of the first flow equalization plate 1022. As a core component for enhancing turbulent mixing, the cyclone tube 1023 is provided with multiple second through holes 10231, each of which is an elongated hole, and the multiple second through holes 10231 are arranged at intervals along the circumference of the cyclone tube 1023. A first guide plate 10232 is provided on one side of each second through hole 10231, and the first guide plate 10232 is provided on the same side of each second through hole 10231 in the circumferential direction of the cyclone tube 1023.

[0093] The cyclone tube 1023 is located downstream of the first flow equalization plate 1022. After the treated waste gas and oil-gas mixture enters the cyclone tube 1023, it is influenced by the walls of the first guide plate 10232 and the second through hole 10231, which can form a strong rotating airflow. This generates centrifugal force to cause radial stratification of the fluid. The swirling flow leads to intense shearing and collision between the fluids, resulting in a superior turbulence intensity. This promotes molecular-level mixing of the airflow, thereby improving the regeneration effect.

[0094] It should be understood that the shape of the second through-hole 10231 can also be other shapes, such as triangular, trapezoidal, square, etc. When the shape of the second through-hole 10231 is other shapes, a matching first guide plate 10232 should be provided on the periphery of the second through-hole 10231 to facilitate better generation of swirling flow.

[0095] The second flow equalization plate 1024 is circular. The central region of the second flow equalization plate 1024 is covered with a plurality of fourth through holes 10243, and the diameter of the central region is the same as the diameter of the vortex tube 1023. The edge region of the second flow equalization plate 1024 surrounding the central region is provided with a plurality of third through holes 10241.

[0096] In a preferred embodiment, each of the fourth through holes 10243 is a circular hole, and each of the third through holes 10241 is a trapezoidal hole. The plurality of third through holes 10241 surround the outer periphery of the central region of the second flow equalization plate 1024, and the plurality of third through holes 10241 are arranged at intervals along the circumference of the central region. A second flow guide plate 10242 is provided on the same side of each third through hole 10241, and the second flow guide plate 10242 is arranged at an angle.

[0097] It should be understood that the shape of the third via 10241 can also be other shapes, such as circular, trapezoidal, or square. Similarly, the shape of the fourth via 10243 can also be other shapes, such as triangular, trapezoidal, or square.

[0098] The second flow equalization plate 1024 is arranged downstream of the swirl tube 1023, adjacent to the inlet of the fluid processing section 103. Its porous structure converts the rotating airflow into axial laminar flow, preventing the swirl from impacting the downstream particulate purification unit 1032. Furthermore, the second flow equalization plate 1024 further breaks up the fluid, effectively improving the uniformity coefficient of the mixed gas, thereby ensuring a uniform distribution of regenerated fuel in the particulate filter.

[0099] In the above implementation, the first flow equalization plate 1022, the swirling tube 1023, and the second flow equalization plate 1024 can be fixed in the first housing 1021 by means of screwing, welding, snap-fitting, etc. For details, please refer to the methods in the relevant technology.

[0100] In addition, the fluid mixing section 102, through the coordinated design of the first housing 1021, the first flow equalization plate 1022, the swirl tube 1023, and the second flow equalization plate 1024, can achieve efficient and uniform mixing of the treated waste gas and the oil-gas mixture, and further break down and atomize the gas-liquid coupling medium to generate pre-oxidized groups, which can provide key support for the combustion regeneration and purification of the subsequent fluid treatment section 103.

[0101] Still refer to Figures 1 to 4 As shown, in some preferred embodiments, the fluid processing unit 103 includes a second housing 1031 and a particle purification unit 1032 disposed within the housing. Along the flow direction of the fluid within the second housing 1031, a pressure stabilizing unit 1033 and a rear cone 1034 are respectively provided upstream and downstream of the particle purification unit 1032.

[0102] In detail, the second housing 1031 is sleeve-shaped, and its cross-section is circular, providing installation space for the particulate purification unit 1032. The installation method and structure of the particulate purification unit 1032 can refer to the methods in related technologies.

[0103] The pressure stabilizing unit 1033 is shaped like a frustum and has a hollow shell structure. Specifically, the end of the pressure stabilizing unit 1033 with a smaller diameter is connected to the outlet of the fluid mixing unit 102, and the end of the pressure stabilizing unit 1033 with a larger diameter is connected to the inlet of the particle purification unit 1032, so as to achieve a better pressure stabilization effect on the fluid.

[0104] The structure of the rear cone 1034 can also refer to the methods in related technologies, and will not be described in detail here. It should be noted that the second housing 1031, the pressure stabilizing part 1033 and the rear cone 1034 can be integrally formed, or they can be processed separately and then connected together.

[0105] In one example, still refer to Figures 1 to 4 As shown, downstream of the rear cone 1034, along the flow direction of the exhaust gas, an exhaust pipe 104 and an outlet flange 105 are sequentially provided. The structure and connection method of the exhaust pipe 104 and the outlet flange 105 are the same as those in related technologies, and will not be described in detail here.

[0106] In the above implementation, the fluid processing unit 103, through the coordinated design of the second housing 1031, the pressure stabilizing unit 1033, the particle purification unit 1032, and the rear cone 1034, can achieve efficient purification of mixed gas, pressure stabilization, and flow field optimization, providing key guarantees for the overall performance improvement of the particle trap 1.

[0107] In order to reduce the noise generated by the exhaust treatment system, in some preferred embodiments, a gasket 1035 is provided inside the second housing 1031 and the gasket 1035 is fitted around the outer periphery of the particulate purification unit 1032.

[0108] Here, a gasket 1035 is added inside the second housing 1031 of the fluid treatment unit 103 and fitted around the outer periphery of the particulate purification unit 1032. The gasket 1035 can be made of materials similar to those in related technologies and can perform functions such as sealing and isolation, thermal protection, and mechanical buffering, significantly improving the reliability, durability and performance stability of the exhaust treatment system.

[0109] To ensure that the exhaust gas can smoothly enter the oil-gas mixing section 201 when needed, refer to... Figures 1 to 4 As shown, in some preferred embodiments, the air passage assembly 202 includes an intake pipe 2021 that introduces exhaust gas into the oil-gas mixing section 201, and a first control valve 2022 disposed on the intake pipe 2021, the first control valve 2022 being capable of controlling the opening and closing of the intake pipe 2021.

[0110] It should be noted that the first control valve 2022 can be, for example, an existing solenoid valve, which is connected to the controller of the exhaust treatment system, and the solenoid valve is controlled by the controller of the exhaust treatment system.

[0111] Specifically, when the exhaust treatment system detects an overload of the particulate filter, a regeneration program can be initiated, at which point the first control valve 2022 controls the intake pipe 2021 to open. When the regeneration program is not required, the first control valve 2022 controls the intake pipe 2021 to close.

[0112] In this embodiment, the air circuit assembly 202, through the coordinated design of the intake pipe 2021 and the first control valve 2022, can achieve precise flow control, dynamic response and system safety protection for the exhaust gas introduced into the oil-gas mixing section 201, which can effectively improve engine combustion efficiency and reduce pollutant emissions.

[0113] To ensure that fuel can smoothly enter the air-fuel mixture section 201 when needed, continue referring to... Figures 1 to 4 As shown, in some preferred embodiments, the hydraulic system 203 includes an inlet line 2031 for introducing fuel into the fuel-air mixture 201, and a second control valve 2032 disposed on the inlet line 2031, the second control valve 2032 being capable of controlling the opening and closing of the inlet line 2031.

[0114] It should be noted that, in order to ensure the regeneration effect, an injector, such as an existing oil mist injector, can be installed at the connection port between the liquid inlet pipe 2031 and the oil-gas mixing section 201 to facilitate the full mixing of oil mist and exhaust gas.

[0115] The second control valve 2032 can be, for example, an existing solenoid valve connected to the controller of the exhaust treatment system, which controls the opening and closing of the solenoid valve. Specifically, when the exhaust treatment system detects an overload of the particulate filter, a regeneration program can be initiated, at which point the second control valve 2032 controls the inlet line 2031 to open. When the regeneration program is not required, the second control valve 2032 controls the inlet line 2031 to close.

[0116] In the above implementation, the hydraulic circuit assembly 203, through the coordinated design of the inlet pipe 2031 and the second control valve 2032, can achieve precise metering and dynamic response of fuel introduction into the oil-gas mixture section 201, which can effectively improve engine combustion efficiency and reduce pollutant emissions.

[0117] In order to ensure that exhaust gas and fuel can smoothly enter the oil-gas mixing unit 201, in some preferred embodiments, the fluid driving unit 204 adopts a gas compressor.

[0118] Here, the fluid drive unit 204 uses a gas compressor, whose core function is to form a high-pressure power source by compressing the mixture of exhaust gas and fuel spray, thereby driving the oil-gas mixture to flow smoothly in the subsequent treatment process and thus improving the combustion regeneration effect.

[0119] In this embodiment, the exhaust treatment system constructs a two-phase premix of fuel and exhaust gas through a regeneration device, then the gas compressor achieves turbulence enhancement, the gas-liquid coupling medium is further atomized, and at the same time, through the multiple mixing methods of the fluid mixing section 102, ultra-fine oil mist can be prepared. By recovering the waste heat of the exhaust gas, the fuel vapor and high-temperature exhaust gas are premixed to generate pre-oxidized groups, thereby achieving efficient combustion and regeneration of carbon particles in the particulate filter 1.

[0120] It is worth noting that, regarding the exhaust treatment system of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 4 As shown, it may include, for example, a particle trap 1 and a regeneration device 2 for regenerating the particle trap 1.

[0121] The regeneration device 2 includes an oil-gas mixing section 201, a gas path assembly 202 that directs exhaust gas into the oil-gas mixing section 201, a liquid path assembly 203 that directs fuel into the oil-gas mixing section 201, and a gas compressor connected between the oil-gas mixing section 201 and the particulate filter 1. The gas compressor is capable of driving the oil-gas mixture in the oil-gas mixing section 201 to flow into the particulate filter 1.

[0122] The particulate filter 1 includes an intake cone 101, a fluid mixing section 102, and a fluid treatment section 103 connected in sequence. The intake cone 101 is provided with a first inlet 1011 and a second inlet 1012. The first inlet 1011 is used to supply the treated exhaust gas from the catalytic converter assembly 3 to the intake cone 101, and the second inlet 1012 is used to supply the oil-gas mixture in the oil-gas mixing section 201 to the intake cone 101.

[0123] The fluid mixing section 102 mixes the treated waste gas and oil-gas mixture that flow into the fluid mixing section 102 from the intake end cone 101, and the fluid treatment section 103 purifies the mixed treated waste gas and oil-gas mixture before discharging it.

[0124] In the preferred embodiment of the exhaust treatment system described above, the specific configuration and arrangement of the fluid mixing unit 102, fluid processing unit 103, gas path assembly 202, liquid path assembly 203, etc., can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the fluid mixing unit 102, fluid processing unit 103, gas path assembly 202, liquid path assembly 203, etc., can also be referred to the descriptions in the above exemplary embodiments.

[0125] An embodiment of the second aspect of this application provides a vehicle equipped with the exhaust treatment system described above.

[0126] In this embodiment, the vehicle utilizes the aforementioned exhaust treatment system, incorporating a fluid drive unit 204. This allows exhaust gases to smoothly enter the air-fuel mixture unit 201 via the air passage assembly 202. The exhaust treatment system has a simple structure and facilitates the smooth downstream flow of the air-fuel mixture, promoting efficient combustion and improving the regeneration effect of the particulate filter 1. This exhaust treatment system offers superior exhaust treatment performance, effectively reducing pollutant emissions and enhancing the vehicle's market competitiveness.

[0127] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. An exhaust gas treatment system, characterized in that: It includes a particulate trap (1) and a regeneration device (2) for regenerating the particulate trap (1). The regeneration device (2) includes an oil-gas mixing section (201), a gas path assembly (202) that directs exhaust gas into the oil-gas mixing section (201), a liquid path assembly (203) that directs fuel into the oil-gas mixing section (201), and a fluid driving section (204) that connects the oil-gas mixing section (201) and the particulate filter (1), the fluid driving section (204) being able to drive the oil-gas mixture in the oil-gas mixing section (201) to flow into the particulate filter (1).

2. The exhaust gas treatment system according to claim 1, characterized in that: The particulate trap (1) includes an air inlet cone (101), a fluid mixing section (102), and a fluid processing section (103) connected in sequence. The intake cone (101) is connected to the catalytic converter assembly (3) and the fluid driving section (204) respectively. The fluid mixing section (102) mixes the treated exhaust gas processed by the catalytic converter assembly (3) with the oil-gas mixture driven by the fluid driving section (204) and delivers it to the fluid treatment section (103) for purification and discharge.

3. The exhaust treatment system according to claim 2, characterized in that: The intake cone (101) is provided with a first inlet (1011) and a second inlet (1012). The first inlet (1011) is used to supply the treated exhaust gas from the catalytic converter assembly (3) to the intake cone (101), and the second inlet (1012) is used to supply the oil-gas mixture in the oil-gas mixing section (201) to the intake cone (101). The fluid mixing section (102) mixes the treated waste gas and the oil-gas mixture that flow in through the air inlet cone (101), and the fluid treatment section (103) purifies and discharges the mixed treated waste gas and the oil-gas mixture.

4. The exhaust gas treatment system according to claim 2, characterized in that: The fluid mixing section (102) includes a first housing (1021), and a first flow equalization plate (1022), a swirling tube (1023), and a second flow equalization plate (1024) disposed within the first housing (1021). The first flow equalization plate (1022), the swirling tube (1023) and the second flow equalization plate (1024) are arranged sequentially along the flow direction of the fluid inside the first housing (1021).

5. The exhaust treatment system according to claim 2, characterized in that: The fluid processing unit (103) includes a second housing (1031) and a particle purification unit (1032) disposed within the housing. Along the flow direction of the fluid inside the second housing (1031), the upstream and downstream of the particle purification unit (1032) are respectively provided with a pressure stabilizing part (1033) and a rear cone (1034).

6. The exhaust treatment system according to claim 5, characterized in that: The second housing (1031) is provided with a liner (1035), which is fitted around the outer periphery of the particulate purification unit (1032).

7. The exhaust treatment system according to claim 1, characterized in that: The gas path assembly (202) includes an intake pipe (2021) that introduces the exhaust gas into the oil-gas mixing section (201), and a first control valve (2022) disposed on the intake pipe (2021), the first control valve (2022) being able to control the opening and closing of the intake pipe (2021).

8. The exhaust gas treatment system according to claim 1, characterized in that: The fluid circuit assembly (203) includes an inlet pipe (2031) for introducing the fuel into the oil-gas mixing section (201), and a second control valve (2032) provided on the inlet pipe (2031), the second control valve (2032) being able to control the opening and closing of the inlet pipe (2031).

9. The exhaust treatment system according to any one of claims 1-8, characterized in that: The fluid drive unit (204) includes a gas compressor.

10. A vehicle, characterized in that: The vehicle is equipped with an exhaust treatment system as described in any one of claims 1-9.

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