Exhaust system and vehicle

Abstract

The utility model relates to the technical field of vehicle exhaust systems, in particular to an exhaust system and a vehicle, and the exhaust system comprises a catalytic converter assembly, a particle trap assembly and a silencer assembly which are connected in sequence. The particulate trap assembly comprises a gas inlet end cone, a gas outlet end cone and a packaging shell, and the gas inlet end cone and the gas outlet end cone are located at the two ends of the packaging shell respectively; wherein the air inlet end cone is fixedly connected with the catalytic converter assembly, the air outlet end cone is fixedly connected with the silencer assembly, and the air inlet end cone and the air outlet end cone are detachably connected with the packaging shell. The air inlet end cone and the air outlet end cone are detachably connected with the packaging shell, cleaning and regeneration of the particulate filter are facilitated, high-pressure cleaning can be directly conducted on the particulate filter aftertreatment purification unit, accumulated particulate matter is removed, and the filtering performance of the particulate filter aftertreatment purification unit is recovered.

Description

Technical Field

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

[0002] When a particulate filter is working, particulate matter in the exhaust gas accumulates and remains on the porous media wall of its filter element, causing the exhaust back pressure to rise continuously. When the exhaust back pressure exceeds a certain limit, the engine performance will significantly decrease. At this time, it is necessary to remove the particulate matter deposited in the filter element to maintain the normal operation of the particulate filter and the engine; this process is called particulate filter regeneration.

[0003] Particulate filter regeneration is divided into two categories: active regeneration and passive regeneration. Active regeneration relies on externally supplied energy to raise the temperature of the filter element, causing the particulate matter to burn and restore it to a clean state. However, this consumes a large amount of energy, so passive regeneration is more commonly used in practice. Passive regeneration uses chemical catalysis to reduce the reactivity of particulate matter, allowing it to burn under normal operating conditions. However, its regeneration effect is often unsatisfactory due to limitations such as the catalyst's ignition temperature range, exhaust composition, and engine operating conditions. Over a long period, a large amount of particulate matter accumulates on the particulate filter, leading to increased exhaust back pressure and consequently affecting the vehicle's fuel consumption and performance.

[0004] When there are too many particulate matter on the particulate filter, it is necessary to remove the particulate filter from the vehicle's exhaust system for cleaning. However, the existing particulate filters are difficult to remove, and due to the special shape of the intake and exhaust cones of the particulate filter, it is difficult to thoroughly flush the inside of the particulate filter when cleaning it.

[0005] Therefore, a more effective particulate filter solution is needed that can facilitate regeneration, ensure stable operation of the exhaust system, reduce vehicle maintenance costs, and improve the vehicle's environmental performance and overall performance. Utility Model Content

[0006] In view of this, this application aims to propose an exhaust system to solve the problem of particulate filters being difficult to disassemble and clean.

[0007] To achieve the above objectives, the first aspect of this application provides an exhaust system, comprising a catalytic converter assembly, a particulate filter assembly, and a muffler assembly connected in sequence;

[0008] The particulate trap assembly includes an inlet cone, an outlet cone, and a housing. The inlet cone and the outlet cone are located at opposite ends of the housing. The inlet cone is fixedly connected to the catalytic converter assembly, the outlet cone is fixedly connected to the muffler assembly, and the inlet cone and the outlet cone are detachably connected to the housing.

[0009] Optionally, the encapsulation housing has a first flange at one end near the air inlet cone, and the air inlet cone has a second flange at one end near the encapsulation housing. The end of the second flange near the first flange is nested inside the first flange, and the first flange and the second flange are fixedly connected by a first clamp.

[0010] The first clamp includes a first clamp body, a first bolt, and a first sealing gasket. The first clamp body is sleeved on the outside of the first flange and the second flange. The first bolt matches the connecting lug of the first clamp body. The first sealing gasket is disposed between the first clamp body and the first flange and the second flange.

[0011] When connecting the first flange and the second flange, turning and tightening the first bolt will allow the first clamp and the first gasket to tightly hold the first flange and the second flange, thereby achieving a sealed and fixed connection. When disassembling the first flange and the second flange, loosening the first bolt and removing the first clamp will allow the first flange and the second flange to be disassembled.

[0012] Optionally, the encapsulation housing is provided with a third flange at one end near the outlet cone, and the outlet cone is provided with a fourth flange at one end near the encapsulation housing. The end of the fourth flange near the third flange is nested inside the third flange, and the third flange and the fourth flange are fixedly connected by a second clamp.

[0013] The second clamp includes a second clamp body, a second bolt, and a second sealing gasket. The second clamp body is sleeved on the outside of the third flange and the fourth flange. The second bolt matches the connecting lug of the second clamp body. The second sealing gasket is disposed between the second clamp body and the third flange and the fourth flange.

[0014] When connecting the third flange and the fourth flange, turning and tightening the second bolt will allow the second clamp and the second sealing gasket to tightly hold the third flange and the fourth flange, thereby achieving a sealed and fixed connection. When disassembling the third flange and the fourth flange, loosening the second bolt and removing the second clamp will allow the third flange and the fourth flange to be disassembled.

[0015] Optionally, both the first flange and the third flange have a ladder inside, and the two ends of the encapsulation housing that connect to the first flange and the third flange are respectively embedded inside the first flange and the third flange and abut against the ladder.

[0016] Optionally, the first flange and the third flange are welded to the encapsulation housing.

[0017] Optionally, the particle trap assembly further includes:

[0018] A particle capture and post-processing purification unit is disposed inside the encapsulation housing;

[0019] An encapsulation gasket is provided between the inner wall of the encapsulation housing and the particle capture and post-treatment purification unit.

[0020] Optionally, the encapsulation liner surrounds the particle capture and post-treatment purification unit in a complete ring.

[0021] Optionally, the muffler assembly includes a first muffler mechanism, a second muffler mechanism, and a third muffler mechanism connected in sequence;

[0022] The first silencing mechanism is connected to the exhaust cone and is used for exhaust flow guidance and silencing.

[0023] The second muffler mechanism is used to further reduce exhaust noise on the basis of the initial reduction of exhaust noise by the first muffler assembly;

[0024] The third silencing mechanism is used to guide the airflow to the external environment after the final silencing process.

[0025] Optionally, the intake cone is welded to the catalytic converter assembly;

[0026] The exhaust cone is welded to the muffler assembly.

[0027] A second aspect of this application provides a vehicle that includes the exhaust system provided in the first aspect.

[0028] The beneficial effects of this utility model are:

[0029] The inlet and outlet cones are detachably connected to the housing, facilitating cleaning and regeneration of the particulate filter. High-pressure cleaning of the post-processing purification unit can be performed directly to remove accumulated particles and restore its filtration performance. This detachable connection significantly simplifies the maintenance and replacement process of the particulate filter assembly, reducing repair time and workload, lowering maintenance costs, minimizing vehicle downtime, and improving vehicle efficiency and economy. Attached Figure Description

[0030] 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:

[0031] Figure 1 This is a schematic diagram of the structure of an exhaust system according to an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the catalytic converter assembly structure of an exhaust system according to an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the particulate filter assembly structure of an exhaust system according to an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the muffler assembly structure of an exhaust system according to an embodiment of this application;

[0035] Explanation of reference numerals in the attached figures:

[0036] Catalytic converter assembly 1, fifth flange 101, catalyst body 102, outlet pipe 103, connecting pipe 104, particulate filter assembly 2, inlet cone 201, outlet cone 202, encapsulation shell 203, particulate filter post-treatment purification unit 204, first flange 205, second flange 206, third flange 207, fourth flange 208, encapsulation gasket 209, muffler assembly 3, muffler body 301, muffler inlet pipe 302, heat insulation cover 303. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] like Figure 1 As shown, the first aspect of this application provides an exhaust system, including a catalytic converter assembly 1, a particulate filter assembly 2, and a muffler assembly 3 connected in sequence;

[0039] The catalytic converter assembly 1 is a component that catalytically converts exhaust gas during vehicle exhaust to eliminate harmful gases. The particulate filter assembly 2 is a component that filters exhaust gas during vehicle exhaust to eliminate particulate matter in the exhaust gas. The muffler assembly 3 is a component that reduces exhaust noise. The three components together form the exhaust system.

[0040] like Figures 2-4 As shown, specifically, the particulate filter assembly 2 includes an inlet cone 201, an outlet cone 202, and an encapsulation housing 203. The inlet cone 201 and the outlet cone 202 are located at opposite ends of the encapsulation housing 203. The inlet cone 201 is fixedly connected to the catalytic converter assembly 1, and the outlet cone 202 is fixedly connected to the muffler assembly 3. The inlet cone 201 and the outlet cone 202 are detachably connected to the encapsulation housing 203.

[0041] The intake cone 201 is equipped with a temperature sensor mount, a differential pressure sensor, and a high-pressure rigid pipe mount. These structures help to evenly distribute the airflow in the catalytic converter pipeline. During exhaust, the exhaust gas flows from the turbocharger through the catalytic converter assembly 1 to the particulate filter. If the airflow is uneven, it can cause the local flow velocity in the particulate filter after-treatment purification unit to be too fast or too slow. The intake cone 201 is a component used to maintain a uniform airflow velocity entering the particulate filter after-treatment purification unit. The main function of the exhaust cone 202 is to guide the exhaust gas, after being treated by the particulate filter assembly 2, to be smoothly discharged and enter the muffler assembly 3. Its special shape design allows the exhaust gas to flow in a predetermined direction and angle when leaving the particulate filter assembly 2, ensuring that the exhaust gas can smoothly and steadily enter the muffler assembly 3 for subsequent noise reduction treatment.

[0042] Specifically, the catalytic converter assembly 1 includes: a catalyst body 102, a fifth flange 101, an outlet pipe 103, and a connecting pipe 104;

[0043] The fifth flange 101 is located at the air inlet of the catalyst body 102 and is used to connect to the turbocharger. The exhaust pipe 103 is located at the air outlet of the catalyst body 102. The connecting pipe 104 is located at the end of the exhaust pipe 103 away from the catalyst body 102. The end of the connecting pipe 104 away from the exhaust pipe 103 is fixedly connected to the exhaust end cone 102.

[0044] Specifically, the noise reduction structure 3 includes: a first noise reduction mechanism, a second noise reduction mechanism, and a third noise reduction mechanism connected in sequence;

[0045] The first muffler mechanism is connected to the exhaust cone 202 and is used for exhaust flow guidance and muffler.

[0046] The second muffler mechanism is used to further reduce exhaust noise on the basis of the initial reduction of exhaust noise by the first muffler assembly;

[0047] The third silencing mechanism is used to guide the airflow to the external environment after the final silencing process.

[0048] The first silencing mechanism includes: a muffler body 301, a muffler inlet pipe 302, and a heat insulation cover 303. The muffler inlet pipe 302 is disposed between the muffler body 301 and the outlet cone 102, for connecting the muffler body 301 and the outlet cone 102, and for fixing the outlet cone 102 and the muffler inlet pipe 302. The heat insulation cover 303 is disposed on the muffler body 301, for protecting the muffler body 301 and isolating the heat of the exhaust gas. The second and third silencing mechanisms are existing technologies and will not be described in detail here.

[0049] The encapsulation housing 203 has two openings, corresponding to the inlet cone 201 and the outlet cone 202, respectively. The encapsulation housing 203 provides a stable housing space for the particulate matter post-treatment purification unit 204, which is located inside the encapsulation housing 203. After the exhaust gas passes through the inlet cone 201, it enters the encapsulation housing 203 and is filtered and purified by the particulate matter post-treatment purification unit 204. The encapsulation housing 203 provides a stable working environment for the particulate matter post-treatment purification unit 204, enabling it to operate normally and effectively filter particulate matter in the exhaust gas. As an external protective structure, the encapsulation housing 203 prevents external impurities, dust, moisture, etc., from entering the particulate matter assembly 2, avoiding corrosion or damage to internal components such as the particulate matter post-treatment purification unit 204, thereby extending the service life of the particulate matter assembly 2 and ensuring its performance stability and reliability.

[0050] The inlet cone 201 and outlet cone 202 are detachably connected to the encapsulation housing 203. When the particulate filter needs to be cleaned, the detachable connection allows the inlet cone 201 and outlet cone 202 to be easily removed from the encapsulation housing 203. This allows the encapsulation housing 203 and the particulate post-processing purification unit 204 inside it to be separated from the exhaust system, thereby enabling high-pressure cleaning and other maintenance operations to be performed directly on the particulate post-processing purification unit 204 inside the particulate filter assembly 2.

[0051] When a large amount of particulate matter accumulates in the particulate matter post-treatment purification unit 204, causing increased exhaust back pressure and affecting vehicle fuel consumption or performance, it can be quickly removed from the enclosure housing 203 for thorough cleaning to remove the accumulated particulate matter and regenerate the particulate matter. Furthermore, when the enclosure housing 203 and the particulate matter post-treatment purification unit 204 malfunction or are damaged and need replacement, the detachable connection greatly simplifies the replacement process. Only the intake cone 201 and the exhaust cone 202 need to be removed to easily replace the enclosure housing 203 and the particulate matter post-treatment purification unit 204, reducing maintenance difficulty and cost, and minimizing vehicle downtime.

[0052] like Figures 2-3 As shown, further, in an optional embodiment, the encapsulation housing 203 is provided with a first flange 205 at one end near the air inlet cone 201, and a second flange 206 is provided at one end of the air inlet cone 201 near the encapsulation housing 203. The end of the second flange 206 near the first flange 205 is nested inside the first flange 205, and the first flange 205 and the second flange 206 are fixedly connected by a first clamp.

[0053] The first clamp includes a first clamp body, a first bolt, and a first sealing gasket. The first clamp body is sleeved on the outside of the first flange 205 and the second flange 206. The first bolt matches the connecting lug of the first clamp body. The first sealing gasket is disposed between the first clamp body and the first flange 205 and the second flange 206.

[0054] When connecting the first flange 205 and the second flange 206, turning and tightening the first bolt will allow the first hoop and the first gasket to tightly hold the first flange 205 and the second flange 206 to achieve a sealed and fixed connection. When disassembling the first flange 205 and the second flange 206, loosening the first bolt and removing the first hoop will allow the first flange 205 and the second flange 206 to be disassembled.

[0055] This connection method tightly integrates the intake cone 201 with the encapsulation housing 203, forming a complete particulate filter assembly 2. It ensures that during exhaust system operation, the intake cone 201 and the encapsulation housing 203 will not loosen or separate, guaranteeing the integrity and stability of the exhaust system structure. This allows exhaust gas to smoothly enter the particulate post-treatment purification unit 204 within the encapsulation housing 203 from the intake cone 201 for processing.

[0056] The tight fit between the first flange 205 and the second flange 206, along with the fixing of the first clamp, ensures a good seal at the connection between the intake cone 201 and the enclosure housing 203. During exhaust, the exhaust gas contains various harmful gases and particulate matter. Leakage at this connection not only causes environmental pollution but may also affect the performance of the particulate filter assembly 2 and the entire exhaust system. A good seal ensures that all exhaust gas enters the particulate post-treatment purification unit 204 for processing, improving the exhaust system's treatment efficiency and reducing environmental pollution. The sealed connection helps maintain pressure stability within the particulate filter assembly 2 and the entire exhaust system. Leakage between the intake cone 201 and the enclosure housing 203 causes pressure fluctuations within the system, affecting the flow characteristics of the exhaust gas and consequently impacting the particulate filter's filtration effect and the engine's exhaust efficiency. A stable pressure environment is crucial for the normal operation of the particulate post-treatment purification unit 204 and the stable operation of the entire exhaust system, ensuring that exhaust gas is processed and emitted according to predetermined processes and parameters in each component.

[0057] The structural design of the first flange 205 and the second flange 206, along with the clamp connection, simplifies the assembly process of the intake cone 201 and the enclosure housing 203. During vehicle production, this connection method improves assembly efficiency and reduces production costs. Simultaneously, it facilitates the inspection and adjustment of the connection accuracy and sealing during installation, ensuring the quality and performance of the particulate filter assembly 2. When the particulate filter assembly 2 requires maintenance, cleaning, or component replacement, the detachable connection of the first flange 205 and the second flange 206 allows the intake cone 201 to be easily removed from the enclosure housing 203. This provides maintenance personnel with convenient operating conditions, enabling them to quickly access the particulate post-treatment purification unit 204 for related work, reducing maintenance time and workload, and improving the vehicle's maintenance convenience and maintainability.

[0058] like Figures 3-4 As shown, further, in an optional embodiment, the end of the encapsulation housing 203 near the outlet cone 202 is provided with a third flange 207, and the end of the outlet cone 202 near the encapsulation housing 203 is provided with a fourth flange 208. The end of the fourth flange 208 near the third flange 207 is nested inside the third flange 207, and the third flange 207 and the fourth flange 208 are fixedly connected by a second clamp.

[0059] The second clamp includes a second clamp body, a second bolt, and a second sealing gasket. The second clamp body is fitted on the outside of the third flange 207 and the fourth flange 208. The second bolt matches the connecting lug of the second clamp body. The second sealing gasket is placed between the second clamp body and the third flange 207 and the fourth flange 208.

[0060] When connecting the third flange 207 and the fourth flange 208, turning and tightening the second bolt will allow the second hoop and the second sealing gasket to tightly hold the third flange 207 and the fourth flange 208 to achieve a sealed and fixed connection. When disassembling the third flange 207 and the fourth flange 208, loosening the second bolt and removing the second hoop will allow the third flange 207 and the fourth flange 208 to be disassembled.

[0061] The third flange 207 and the fourth flange 208 are structurally and functionally similar to the first flange 205 and the second flange 206. This allows the exhaust cone 202 to be tightly connected to the encapsulation housing 203, forming a stable particulate filter assembly 2 structure. This ensures that the exhaust gas can be smoothly discharged through the exhaust cone 202 after being treated by the particulate filter post-treatment purification unit 204 from the encapsulation housing 203. This ensures the integrity and continuity of the exhaust system structure, and makes the flow path of the exhaust gas complete and stable throughout the entire exhaust system.

[0062] The structure and clamp connection of the third flange 207 and the fourth flange 208 simplify the assembly of the exhaust cone 202 and the encapsulation housing 203. In vehicle production, this improves assembly efficiency, reduces costs, and facilitates inspection and adjustment of connection accuracy and sealing during installation, ensuring the quality and performance of the particulate filter assembly 2. When maintenance, cleaning, or replacement of parts of the particulate filter assembly 2 is required, its detachable connection allows for easy removal of the exhaust cone 202 from the encapsulation housing 203, providing convenient operating conditions for maintenance personnel. This facilitates access to the particulate post-treatment purification unit 204, reducing maintenance time and workload, improving vehicle maintenance convenience and maintainability, minimizing vehicle downtime due to exhaust system maintenance, and ensuring normal vehicle operation.

[0063] Furthermore, in an alternative embodiment, the connection between the inlet cone 201 and the outlet cone 202 and the encapsulation housing 203 can also be achieved using a quick-connect clamp.

[0064] The quick-connect clamp has one part fixed to the inlet cone 201 or the outlet cone 202, and the other part fixed to the enclosure housing 203. By operating the handle or button on the clamp, quick clamping and releasing are achieved, thus enabling a detachable connection. This method of connection and disassembly is fast and easy to operate, requiring no tools or only simple tools, effectively reducing maintenance time and workload.

[0065] Furthermore, in an alternative embodiment, the connection between the inlet cone 201 and the outlet cone 202 and the encapsulation housing 203 can also be achieved using bolts.

[0066] Corresponding bolt holes are provided on the inlet cone 201 and the encapsulation housing 203 near the inlet cone 201, respectively, and the two are fastened together by bolts and nuts. Similarly, a similar bolt connection method is used on the outlet cone 202 and the encapsulation housing 203 near the outlet cone 202. The bolted connection is firm, has good disassembly, and the tightening force of the bolt connection can be precisely controlled by adjusting the tightness of the nuts. At the same time, standard bolts and nuts are readily available, facilitating installation and maintenance.

[0067] like Figure 3 As shown, further, in an optional embodiment, both the first flange 205 and the third flange 207 are provided with a ladder platform inside, and the two ends of the encapsulation housing 203 connected to the first flange 205 and the third flange 207 are respectively embedded inside the first flange 205 and the third flange 207 and abut against the ladder platform.

[0068] The ladder is located inside the first flange 205 and the third flange 207. When the first flange 205 and the third flange 207 are connected to the encapsulation housing 203, the first flange 205 and the third flange 207 can be fitted onto both ends of the encapsulation housing 203, and the encapsulation housing 203 can abut against the ladder, so that the first flange 205 and the third flange 207 are fitted onto the encapsulation housing 203.

[0069] The ladder platform provides precise positioning for the encapsulation housing 203. When the encapsulation housing 203 is connected to the first flange 205 and the third flange 207, its two ends are embedded inside the flanges and abut against the ladder platform, ensuring accurate positioning of the encapsulation housing 203 in both horizontal and vertical directions. This helps ensure the overall structural accuracy of the particulate filter assembly 2, making the connection between the inlet cone 201, the outlet cone 202, and the encapsulation housing 203 more accurate and stable. During vehicle operation, the exhaust system is subjected to various vibrations and impacts. Accurate positioning and limiting can effectively prevent displacement of the encapsulation housing 203 relative to the inlet cone 201 and the outlet cone 202, thereby ensuring the structural stability of the particulate filter assembly 2 and reducing the risk of failure due to loose or displaced components.

[0070] The abutment mechanism between the ladder platform and the enclosure housing 203 increases the contact area, enabling the connection to withstand greater tensile, compressive, and shear forces. Compared to a simple planar connection, this structure better resists external forces caused by exhaust system vibrations, exhaust pressure fluctuations, and vehicle bumps during operation. It enhances the reliability of the connection between the first flange 205, the third flange 207, and the enclosure housing 203, reducing the likelihood of loosening or breakage at the connection points, extending the service life of the particulate filter assembly 2, ensuring stable operation of the exhaust system during long-term use, and reducing the frequency of maintenance and replacement due to component damage.

[0071] Furthermore, in an alternative embodiment, the first flange 205 and the third flange 207 are welded to the encapsulation housing 203.

[0072] Welding is a permanent connection method that creates a very strong bond between the first flange 205, the third flange 207, and the enclosure housing 203. During welding, high temperatures melt and fuse the metal materials together, forming a continuous metal connection structure. This connection method can withstand enormous tensile, compressive, and shear forces. During vehicle operation, regardless of vibrations, bumps, or exhaust pressure fluctuations, it ensures that the connection between the first flange 205, the third flange 207, and the enclosure housing 203 will not loosen or separate. This is crucial for ensuring the structural integrity of the particulate filter assembly 2, thereby maintaining the stable operation of the entire exhaust system, preventing exhaust leakage and poor exhaust flow caused by loose component connections, and ensuring normal vehicle use and exhaust emission control.

[0073] Welding creates a continuous, seamless metal connection between the first flange 205, the third flange 207, and the enclosure housing 203. This connection method virtually eliminates gaps, significantly improving the sealing performance of the particulate filter assembly 2. In the exhaust system, good sealing performance is crucial to preventing exhaust gas leakage. The welded connection ensures that the exhaust gas flows only along a predetermined path within the particulate filter assembly 2, is treated by the particulate post-treatment purification unit 204, and is then discharged, improving exhaust gas treatment efficiency and ensuring the environmental performance of the exhaust system.

[0074] Furthermore, in an optional embodiment, an encapsulation gasket 209 is provided between the inner wall of the encapsulation housing 203 and the particle capture post-treatment purification unit 204. The encapsulation gasket 209 surrounds the particle capture post-treatment purification unit 204 in a complete ring shape.

[0075] The encapsulation gasket 209 fills any tiny gaps that may exist between the inner wall of the encapsulation housing 203 and the particulate matter post-treatment purification unit 204. During exhaust gas processing, the exhaust gas must pass through the particulate matter post-treatment purification unit 204 for particulate matter filtration. Without the encapsulation gasket 209, the exhaust gas might bypass these gaps and leak, directly escaping the particulate matter post-treatment purification unit 204, resulting in inadequate exhaust gas treatment and excessive emissions. The encapsulation gasket 209 effectively prevents exhaust gas bypass leakage, ensuring that all exhaust gas passes through the particulate matter post-treatment purification unit 204, thus guaranteeing effective control of exhaust gas pollutants by the exhaust system.

[0076] The annular structure provides a continuous and uniform seal along the entire circumference of the particulate post-treatment purification unit 204. When exhaust gas flows within the particulate filter assembly 2, it cannot bypass the sealed area between the encapsulation gasket 209 and the inner wall of the encapsulation housing 203, regardless of the angle from which it enters. This effectively prevents exhaust gas leakage at any possible location, ensuring that the exhaust gas must be treated by the particulate post-treatment purification unit 204, maximizing the filtration efficiency of the particulate filter, and guaranteeing strict control of exhaust gas pollutants by the exhaust system.

[0077] Furthermore, in an alternative embodiment, the encapsulation gasket 209 is made of rubber.

[0078] Rubber possesses excellent plasticity, allowing it to easily adapt to changes in shape and size between the inner wall of the encapsulation housing 203 and the particulate matter collection and post-treatment purification unit 204 during installation. It fits tightly between the two, filling various tiny irregular gaps. This excellent fit effectively prevents exhaust gas leakage from these gaps, ensuring the sealing performance of the particulate matter collector assembly 2. Whether at room temperature or in the high-temperature environment of the exhaust system, the rubber material maintains a certain degree of flexibility and sealing capability, thus consistently providing reliable sealing for exhaust gas treatment.

[0079] Rubber material has a certain degree of elasticity, and when subjected to exhaust gas pressure, it can undergo slight deformation, thereby further enhancing the sealing effect. This self-sealing characteristic allows the sealing gasket 209 to maintain a good sealing state during long-term use, even under the influence of factors such as exhaust gas pressure fluctuations and vehicle vibration.

[0080] Furthermore, in an optional embodiment, the intake cone 201 is welded to the catalytic converter assembly 1, and the exhaust cone 202 is welded to the muffler assembly 3.

[0081] Similar to the connection effect between the first flange 205, the third flange 207, and the encapsulation housing 203, the welding method enables a very robust connection between the intake cone 201 and the catalytic converter assembly 1, and between the exhaust cone 202 and the muffler assembly 3. During vehicle operation, the exhaust system is subjected to various vibrations, bumps, and exhaust pressure fluctuations. Furthermore, a continuous, seamless metal connection can be formed at the joints between the intake cone 201 and the catalytic converter assembly 1, and between the exhaust cone 202 and the muffler assembly 3. This almost completely eliminates connection gaps, greatly improving the sealing performance of the exhaust system.

[0082] A second aspect of this application provides a vehicle that includes the exhaust system provided in the first aspect.

[0083] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An exhaust system, characterized in that, It includes a catalytic converter assembly (1), a particulate filter assembly (2), and a muffler assembly (3) connected in sequence; The particulate trap assembly (2) includes an inlet cone (201), an outlet cone (202), and a housing (203). The inlet cone (201) and the outlet cone (202) are located at opposite ends of the housing (203). The inlet cone (201) is fixedly connected to the catalytic converter assembly (1), and the outlet cone (202) is fixedly connected to the muffler assembly (3). The inlet cone (201) and the outlet cone (202) are detachably connected to the housing (203).

2. The exhaust system according to claim 1, characterized in that, The encapsulation housing (203) has a first flange (205) at one end near the air inlet cone (201), and a second flange (206) at one end near the encapsulation housing (203). The end of the second flange (206) near the first flange (205) is nested inside the first flange (205), and the first flange (205) and the second flange (206) are fixedly connected by a first clamp. The first clamp includes a first clamp body, a first bolt, and a first sealing gasket. The first clamp body is sleeved on the outside of the first flange (205) and the second flange (206). The first bolt matches the connecting lug of the first clamp body. The first sealing gasket is disposed between the first clamp body and the first flange (205) and the second flange (206). When connecting the first flange (205) and the second flange (206), the first bolt is turned and tightened so that the first hoop and the first gasket tightly hold the first flange (205) and the second flange (206) to achieve a sealed and fixed connection. When disassembling the first flange (205) and the second flange (206), the first bolt is loosened and the first hoop is removed so that the first flange (205) and the second flange (206) can be disassembled.

3. The exhaust system according to claim 2, characterized in that, The encapsulation housing (203) has a third flange (207) at one end near the outlet cone (202), and a fourth flange (208) at one end near the encapsulation housing (203). The fourth flange (208) is nested inside the third flange (207) at one end near the third flange (207), and the third flange (207) and the fourth flange (208) are fixedly connected by a second clamp. The second clamp includes a second clamp body, a second bolt, and a second sealing gasket. The second clamp body is sleeved on the outside of the third flange (207) and the fourth flange (208). The second bolt matches the connecting lug of the second clamp body. The second sealing gasket is disposed between the second clamp body and the third flange (207) and the fourth flange (208). When connecting the third flange (207) and the fourth flange (208), tightening the second bolt will allow the second clamp and the second gasket to tightly hold the third flange (207) and the fourth flange (208) to achieve a sealed and fixed connection. When disassembling the third flange (207) and the fourth flange (208), loosening the second bolt and removing the second clamp will allow the third flange (207) and the fourth flange (208) to be disassembled.

4. The exhaust system according to claim 3, characterized in that, Both the first flange (205) and the third flange (207) are provided with a ladder inside. The two ends of the encapsulation housing (203) connected to the first flange (205) and the third flange (207) are respectively embedded inside the first flange (205) and the third flange (207) and abut against the ladder.

5. The exhaust system according to claim 3, characterized in that, The first flange (205) and the third flange (207) are welded to the encapsulation housing (203).

6. The exhaust system according to claim 1, characterized in that, The particulate trap assembly (2) also includes: A particle capture post-processing purification unit (204) is disposed inside the encapsulation housing (203); An encapsulation liner (209) is provided between the inner wall of the encapsulation housing (203) and the particle capture post-treatment purification unit (204).

7. The exhaust system according to claim 6, characterized in that, The encapsulation liner (209) surrounds the particle capture post-treatment purification unit (204) in a complete ring.

8. The exhaust system according to claim 1, characterized in that, The muffler assembly (3) includes a first muffler mechanism, a second muffler mechanism and a third muffler mechanism connected in sequence; The first silencing mechanism is connected to the exhaust cone (202) and is used for exhaust flow guidance and silencing. The second muffler mechanism is used to further reduce exhaust noise based on the initial reduction of exhaust noise by the first muffler mechanism; The third silencing mechanism is used to guide the airflow to the external environment after the final silencing process.

9. The exhaust system according to claim 1, characterized in that, The intake end cone (201) is welded to the catalytic converter assembly (1); The exhaust cone (202) is welded to the muffler assembly (3).

10. A vehicle, characterized in that, The vehicle includes the exhaust system as described in any one of claims 1-9.

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