Muffler, exhaust system, and vehicle

Abstract

The application relates to a muffler, an exhaust system and a vehicle, and belongs to the technical field of vehicle mufflers, and comprises a muffler body, a heat sink and a wind guide. The heat sink is connected to the outer wall of the muffler body; the wind guide is arranged on one side of the muffler body, and the wind guide is used for guiding airflow and increasing the airflow speed through the heat sink. By arranging the heat sink to assist the heat dissipation of the muffler body, and arranging the wind guide to increase the airflow speed through the muffler body and the heat sink, the heat dissipation efficiency is improved. In this way, the heat accumulation at the muffler body is reduced, the influence of heat radiation on surrounding components is reduced, and the heat management performance of the vehicle and the service life of the surrounding components are improved.

Description

Technical Field

[0001] This application relates to the technical field of automotive mufflers, and more particularly to a muffler, an exhaust system, and a vehicle. Background Technology

[0002] A car muffler is installed in the car's exhaust system. Its main function is to reduce the noise generated by the engine exhaust, while also guiding and cooling the exhaust to some extent. Through a special internal structural design, the exhaust airflow undergoes multiple reflections, interferences, and energy losses as it passes through, effectively reducing exhaust noise and improving vehicle comfort and environmental performance.

[0003] In existing technologies, mufflers are also used to dissipate heat generated by the engine. Therefore, mufflers generate significant thermal radiation, primarily transferring energy to the surrounding environment through infrared electromagnetic waves. Their high-temperature surfaces create thermal damage with adjacent components (such as rubber mounts, fuel lines, and control arm bushings), which over time can lead to aging of plastic parts, cracking of rubber seals, or failure of electronic components. Therefore, there is an urgent need to improve the muffler structure to reduce thermal radiation to nearby vehicle components. Utility Model Content

[0004] This application addresses, to at least some extent, one of the technical problems in the related art.

[0005] Therefore, this application aims to provide a muffler, exhaust system, and vehicle that, while incorporating radiator fins to assist in heat dissipation of the muffler body, also includes air guides to increase the airflow velocity through the muffler body and radiator fins, thereby improving heat dissipation efficiency. This reduces heat accumulation at the muffler body, minimizes heat radiation impact on surrounding components, and improves the vehicle's thermal management performance and the service life of surrounding components.

[0006] To achieve the above objectives, in a first aspect, this application provides a muffler, comprising:

[0007] Muffler body;

[0008] A heat sink is connected to the outer wall of the muffler body;

[0009] An air guide is disposed on the periphery of the muffler body. The air guide is used to guide airflow and increase the airflow velocity passing through the heat sink.

[0010] In this technical solution, by connecting heat sinks to the outer wall of the muffler body, the heat dissipation area of ​​the muffler is increased. Heat can be transferred from the muffler body to the heat sinks and dissipated through the heat sinks, helping to dissipate the heat generated by engine exhaust. Simultaneously, the installation of air guides increases the airflow velocity through the muffler body and heat sinks, thereby increasing the fluid mass flowing over the heat sink and muffler body surface per unit time, thus enhancing heat transfer and improving heat dissipation efficiency. This also reduces heat accumulation at the muffler body, thereby reducing the impact of heat radiation on surrounding components, improving the vehicle's thermal management performance and extending the service life of surrounding components.

[0011] In some embodiments of this application, an air duct is formed between the air guide and the silencer body, the air duct includes a contraction section, the contraction section has an air inlet and an air outlet; the contraction section is gradually narrowed from the air inlet to the air outlet.

[0012] The air outlet of the contraction section is located on the periphery of the muffler body.

[0013] In the technical solution, the cross-section of the channel through which the airflow can pass is gradually reduced by the design of the contraction section, which leads to a gradual increase in the airflow velocity and forms the Venturi effect. This causes the airflow to accelerate when passing through the contraction section, thereby generating a higher flow velocity on the surface of the heat sink and the surface of the muffler body, thus improving the heat dissipation efficiency.

[0014] In some embodiments of this application, the air duct further includes a waist-shaped section, which is connected to the air outlet of the contraction section;

[0015] The surface perpendicular to the airflow direction within the duct is defined as a cross section, and the area of ​​any cross section in the waist-shaped segment is equal.

[0016] In the existing technical solution, without a contraction section, the airflow velocity decreases rapidly after passing through it, resulting in only a short segment of high-speed airflow passing over the muffler body and heat sink. However, in this application, the airflow, accelerated after passing through the contraction section, enters the waist-shaped section. Due to the uniform cross-section of the waist-shaped section, the airflow rate and velocity are stable and uniform. This ensures a longer segment of high-speed airflow passes over the heat sink and muffler surface, thereby guaranteeing effective heat dissipation for the muffler body.

[0017] In some embodiments of this application, the air duct further includes an expansion section, which is connected to the end of the waist-shaped section away from the contraction section;

[0018] The expansion section is gradually widened in the direction away from the contraction section.

[0019] In the technical solution, according to Bernoulli's principle, the faster the flow velocity, the lower the pressure, and the slower the flow velocity, the higher the pressure. Therefore, without an expansion section, the airflow passing through the waist-shaped section will be rapidly decelerated, resulting in a high-pressure area behind the waist-shaped section, causing a "blockage" effect at the outlet of the waist-shaped section. Consequently, the airflow entering the contraction section and the flow velocity passing through the waist-shaped section will be reduced, leading to poor heat dissipation. In this application, by setting an expansion section, the airflow can be gradually decelerated and pressure restored, reducing the possibility of a high-pressure area or turbulence forming at the outlet. This ensures the airflow velocity and volume throughout the duct, thereby guaranteeing the heat dissipation effect on the silencer body.

[0020] In some embodiments of this application, the air guide includes a contraction plate and a waist-shaped plate connected to each other, wherein the contraction plate forms a contraction section between itself and the muffler body; and the waist-shaped plate forms a waist-shaped section between itself and the muffler body.

[0021] In the technical solution, the contraction plate and waist-shaped plate of the air guide component form the aforementioned contraction section and waist-shaped section between themselves and the silencer body. This structure facilitates production and installation. Furthermore, the design of the contraction plate and waist-shaped plate allows for more precise control of the shape and size of the air duct. If different sizes of heat dissipation sections and contraction sections are required, only the size of the air guide component needs to be controlled, making it convenient to design for silencer bodies of different specifications.

[0022] In some embodiments of this application, the air guide further includes an expansion plate disposed at the end of the waist-shaped plate away from the contraction plate; the expansion section is formed between the expansion plate and the silencer body.

[0023] In the technical solution, the air guide includes an expansion plate, which allows the expansion section to connect better with the waist-shaped section and form a gradually expanding channel. The shape and size of the expansion plate are easy to adjust. If the fit between the expansion section and the contraction section is not good, the expansion plate can be adjusted to adjust the shape and size of the expansion section, thereby ensuring that the entire air guide is in optimal working condition and guaranteeing the airflow velocity through the silencer body and heat sink.

[0024] In some embodiments of this application, the silencer body is located entirely around the periphery of the air guide;

[0025] The air guide component is made of heat-insulating material.

[0026] In the technical solution, the air guide component not only guides the airflow to increase the flow rate, but also serves as a heat insulation component. It can effectively reduce the heat radiation impact of the muffler on surrounding components, reduce the risk of aging, cracking or failure of surrounding components due to high temperature, and improve the overall reliability and safety of the vehicle.

[0027] In some embodiments of this application, the heat sink is wavy, and the extension direction of the heat sink is the same as the flow direction of the airflow in the air duct.

[0028] In the technical solution, for the same axial length, the corrugated heat sink occupies a larger volume than the straight heat sink, thus increasing its contact area with the air and improving the heat dissipation effect on the muffler body.

[0029] In addition, this application also provides an exhaust system, which includes an intake pipe, an exhaust pipe, and a muffler as described above. The muffler body has an intake port and an exhaust port. The intake pipe is connected to and communicates with the intake port of the muffler body. The exhaust pipe is connected to and communicates with the exhaust port of the muffler body.

[0030] In this technical solution, the exhaust gas produced by the engine enters the muffler body through the intake pipe and is discharged through the exhaust pipe. Because of the aforementioned muffler, this exhaust system can more effectively dissipate heat into the air, reducing the heat accumulated within the exhaust system, especially reducing heat buildup at the muffler body. This reduces the impact of heat radiation on surrounding components, improving the vehicle's thermal management performance and extending the service life of surrounding parts.

[0031] In addition, this application also provides a vehicle, including: a body and an exhaust system as described above;

[0032] The exhaust system is installed on the vehicle body; the air guide is used to guide airflow into the front of the vehicle body; the air guide is located between the muffler body and the vehicle body.

[0033] In this technical solution, one end of the air guide component directs the airflow towards the front of the vehicle body; that is, the air inlet of the converging section faces the front of the vehicle. When the vehicle is in motion, the airflow from the front of the vehicle enters the converging section and completes the aforementioned heat dissipation process. This eliminates the need for an additional power source such as a fan, ensuring reduced heat radiation impact on components surrounding the exhaust system while also offering economic advantages.

[0034] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of a muffler according to an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the structure of the muffler body according to an embodiment of this application;

[0037] Figure 3This is a cross-sectional view of a partial structure of a muffler according to an embodiment of this application;

[0038] Figure 4 This is a rear view of a muffler according to an embodiment of this application;

[0039] Figure 5 yes Figure 4 A cross-sectional view along the AA direction.

[0040] In the above figures: 100, muffler body; 200, heat sink; 10, air guide component;

[0041] 300. Shrink plate; 301. Shrink section;

[0042] 400. Waist-shaped plate; 401. Waist-shaped segment;

[0043] 500, Expansion plate; 501, Expansion section;

[0044] 600, intake pipe; 700, exhaust pipe. Detailed Implementation

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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 of this application.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] 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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] 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.

[0050] It should be noted that in the automotive industry, the muffler is located in the vehicle's exhaust system. Its main function is to reduce the noise generated by the engine exhaust, while also guiding and cooling the exhaust to some extent. Through a special internal structural design, the muffler causes multiple reflections, interferences, and energy losses in the exhaust airflow, effectively reducing exhaust noise and improving vehicle comfort and environmental performance.

[0051] In existing technologies, mufflers are also used to dissipate heat generated by the engine. Therefore, mufflers produce significant thermal radiation, primarily transferring energy to the surrounding environment through infrared electromagnetic waves. Their high-temperature surfaces can cause thermal damage to adjacent components, and long-term exposure can lead to aging of plastic parts, cracking of rubber seals, or failure of electronic components.

[0052] Based on this, this application proposes a muffler that improves heat dissipation efficiency by simultaneously installing heat sinks to assist in cooling the muffler body and air guides to increase the airflow velocity through the muffler body and heat sinks. This reduces heat accumulation at 100°C in the muffler body, reduces the impact of heat radiation on surrounding components, and improves the vehicle's thermal management performance and the service life of surrounding components.

[0053] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0054] Referring to all the accompanying drawings, in one schematic embodiment of a muffler according to this application, the muffler includes a muffler body 100. The muffler body 100 is mainly used to reduce engine exhaust noise and optimize exhaust and heat dissipation. The muffler body 100 reduces noise by reflecting and interfering with sound waves through a special internal structure.

[0055] In some embodiments, the muffler further includes a heat sink 200 connected to the outer wall of the muffler body 100. By connecting the heat sink 200 to the outer wall of the muffler body 100, the heat dissipation area of ​​the muffler is increased, and heat can be transferred through the muffler body 100 to the heat sink 200 and dissipated through the heat sink 200, which helps to dissipate the heat generated by the engine exhaust.

[0056] In addition, the heat sink 200 can also guide airflow so that airflow enters between each heat sink 200. The airflow is guided along the length of the muffler, so that the airflow flows over the surface of the muffler body 100.

[0057] In some embodiments, the muffler further includes an air guide 10 disposed on the periphery of the muffler body 100, the air guide 10 being used to guide airflow and increase the airflow velocity passing through the heat sink 200.

[0058] In existing technologies, when a vehicle is in motion, heat is carried away from the muffler body 100 by airflow from the outside. However, the present application's solution incorporates a guide vane 10 to increase the airflow velocity across the muffler body 100 and the heat sink 200. This increases the mass of fluid flowing over the heat sink 200 and the surface of the muffler body 100 per unit time, thereby enhancing heat transfer and improving heat dissipation efficiency. It also reduces heat accumulation at the muffler body 100, thus minimizing heat radiation impact on surrounding components and improving the vehicle's thermal management performance and the lifespan of surrounding components.

[0059] In some embodiments, an air duct is formed between the air guide 10 and the muffler body 100. The air duct includes a contraction section 301, which has an air inlet and an air outlet. The contraction section 301 is gradually narrowed from the air inlet to the air outlet. Through the design of the contraction section 301, the cross-sectional area through which the airflow can pass gradually decreases, thus causing the airflow velocity to gradually increase, forming a Venturi effect. This accelerates the airflow as it passes through the contraction section 301, resulting in higher flow velocities on the surfaces of the heat sink 200 and the muffler body 100, thereby improving heat dissipation efficiency.

[0060] In some embodiments, the air outlet of the contraction section 301 is located on the periphery of the muffler body 100. This ensures that the airflow with the highest speed after being accelerated by the contraction section 301 can contact the muffler body 100, thereby achieving heat dissipation for the muffler body 100 and the heat sink 200.

[0061] In some embodiments, the length direction of the muffler body 100 is arranged along the longitudinal direction of the vehicle. When the vehicle is in motion, the airflow in front of the vehicle passes through the vehicle and the muffler body 100.

[0062] In some embodiments, the longitudinal direction of the air guide 10 is the same as the longitudinal direction of the silencer body 100. The flow direction of the airflow in the duct is the same as the longitudinal direction of the air guide 10.

[0063] In some embodiments, the air duct further includes a waist-shaped section 401, which is connected to the air outlet of the contraction section 301. A cross-section is defined as the surface within the air duct perpendicular to the airflow direction, and any cross-section within the waist-shaped section 401 has the same area.

[0064] Without the waist-shaped section 401, the airflow velocity after passing through the contraction section 301 would decrease rapidly, resulting in only a small segment of high-speed airflow being able to flow through the muffler body 100 and the heat sink 200. However, in this application, the airflow accelerated by the contraction section 301 enters the waist-shaped section 401. Due to the uniform cross-section of the waist-shaped section 401, the flow rate and velocity within it are stable and uniform. This ensures that a relatively long segment of high-speed airflow can flow through the heat sink 200 and the muffler surface, thereby guaranteeing effective heat dissipation for the muffler body 100.

[0065] It is understood that the cross-sectional area of ​​the air duct described in this application refers to the cross-section perpendicular to the length direction of the air guide 10.

[0066] Furthermore, the cross-sectional area of ​​the waist-shaped segment 401 is the same as the minimum cross-sectional area of ​​the contraction segment 301.

[0067] In some embodiments, the air duct further includes an expansion section 501, which is connected to the end of the waist-shaped section 401 away from the contraction section 301; the expansion section 501 is gradually widened in the direction away from the contraction section 301. According to Bernoulli's principle, the faster the flow velocity, the lower the pressure, and the slower the flow velocity, the higher the pressure; therefore, if the expansion section 501 is not provided, the airflow passing through the waist-shaped section 401 will be rapidly decelerated, resulting in a high-pressure area behind the waist-shaped section 401, causing the outlet of the waist-shaped section 401 to be "blocked"; thus, the airflow entering the contraction section 301 and the flow velocity passing through the waist-shaped section 401 will be reduced, resulting in poor heat dissipation. In this application, by providing the expansion section 501, the airflow can be gradually decelerated and the pressure restored, reducing the possibility of a high-pressure area or turbulence forming at the outlet. This ensures the flow velocity and airflow within the entire air duct, thereby ensuring the heat dissipation effect on the silencer body 100.

[0068] In some embodiments, the air guide 10 includes a contraction plate 300 and a waist-shaped plate 400 connected to each other. A contraction section 301 is formed between the contraction plate 300 and the silencer body 100; a waist-shaped section 401 is formed between the waist-shaped plate 400 and the silencer body 100. The contraction plate 300 and waist-shaped plate 400 of the air guide 10 form the aforementioned contraction section 301 and waist-shaped section 401 with the silencer body 100, which facilitates production and installation. Furthermore, by setting the contraction plate 300 and waist-shaped plate 400, the shape and size of the air duct can be controlled more precisely. If different sizes of heat dissipation sections and contraction sections 301 are required, only the size of the air guide 10 needs to be controlled, making it convenient to set for silencer bodies 100 of different specifications.

[0069] In some embodiments, the air guide 10 further includes an expansion plate 500, which is disposed at the end of the waist-shaped plate 400 away from the contraction plate 300; an expansion section 501 is formed between the expansion plate 500 and the silencer body 100. The air guide 10 includes the expansion plate 500 so that the expansion section 501 can better connect with the waist-shaped section 401 and form a gradually expanding channel. The shape and size of the expansion plate 500 are easy to adjust. If the fit between the expansion section 501 and the contraction section 301 is not good, the expansion plate 500 can be adjusted to adjust the shape and size of the expansion section 501, thereby ensuring that the entire air guide 10 is in the optimal working state and guaranteeing the airflow velocity through the silencer body 100 and the heat sink 200.

[0070] In some embodiments, within the same cross-section, the shortest distance from any point on the inner wall of the contraction plate 300 to the outer wall of the muffler body 100 is the same. It is understood that this cross-section refers to a section perpendicular to the aforementioned air duct. This ensures uniform airflow through the muffler body 100 and the heat sink within the contraction section 301, reducing the occurrence of uneven heat dissipation due to excessively fast or slow local flow velocities.

[0071] In some embodiments, the shortest distance from any point on the inner wall of the waist-shaped plate 400 to the outer wall of the muffler body 100 is the same. This ensures that the airflow through the muffler body 100 within the waist-shaped section 401 is uniform and stable, reducing the occurrence of uneven heat dissipation caused by excessively fast or slow local flow velocities.

[0072] In some embodiments, within the same cross-section, the shortest distance from any point on the inner wall of the expansion plate 500 to the outer wall of the muffler body 100 is the same. It is understood that this cross-section refers to a section perpendicular to the aforementioned air duct. This ensures uniform airflow through the muffler body 100 and the heat sink within the expansion section 501, reducing the occurrence of uneven heat dissipation due to excessively fast or slow local flow velocities.

[0073] In some embodiments, the muffler body 100 is cylindrical. The waist-shaped plate 400 is bent into a semi-circle, and the axis of the waist-shaped plate 400 is collinear with the axis of the muffler body 100. The waist-shaped section 401 between the muffler body 100 and the waist-shaped plate 400 is arc-shaped. This design makes the overall structure of the muffler more compact and optimizes the spatial layout.

[0074] Furthermore, the two ends of the waist-shaped plate 400 are spaced apart from the muffler body 100. Firstly, the material of the waist-shaped plate 400 is different from the material of the outer shell of the muffler body 100, making connection difficult. Secondly, the waist-shaped plate 400 may directly transfer heat from the muffler body 100, causing its temperature to rise and potentially resulting in heat radiation to components such as the side rubber mounts, fuel lines, and swing arm bushings.

[0075] However, this application still includes the case where both ends of the waist-shaped plate 400 are connected to the muffler body 100 in the circumferential direction. This ensures that the airflow only flows along the length of the air duct, preventing airflow loss from the sides, guaranteeing the airflow velocity and flow rate, and improving the heat dissipation effect. In this application, the connection between the waist-shaped plate 400 and the muffler body 100 can be selected according to requirements.

[0076] In some embodiments, the shrink plate 300 is bent into a frustum shape, and the axis of the shrink plate 300 is collinear with the axis of the muffler body 100. The smaller end of the shrink plate 300 is directly connected to one axial end of the waist-shaped plate 400. This design makes the overall structure of the muffler more compact and optimizes the spatial layout.

[0077] Furthermore, the two ends of the shrink plate 300 are spaced apart from the muffler body 100 in the circumferential direction. Firstly, the material of the shrink plate 300 is different from the material of the outer shell of the muffler body 100, making connection difficult. Secondly, the shrink plate 300 may directly transfer heat from the muffler body 100, causing its temperature to rise and resulting in heat radiation to adjacent components.

[0078] However, this application still includes the case where both ends of the shrink plate 300 are connected to the muffler body 100 in the circumferential direction. This ensures that the airflow only flows along the length of the duct, preventing airflow loss from the sides, guaranteeing the airflow velocity and flow rate, and improving heat dissipation. In this application, the connection between the shrink plate 300 and the muffler body 100 can be selected according to requirements.

[0079] In some embodiments, the expansion plate 500 is bent into a frustum shape, and the axis of the expansion plate 500 is collinear with the axis of the muffler body 100. The smaller end of the expansion plate 500 is directly connected to the end of the waist-shaped plate 400 away from the contraction plate 300. This design makes the overall structure of the muffler more compact and optimizes the spatial layout.

[0080] Furthermore, the two ends of the expansion plate 500 are spaced apart from the muffler body 100 in the circumferential direction. Firstly, the material of the expansion plate 500 is different from the material of the outer shell of the muffler body 100, making connection difficult. Secondly, the expansion plate 500 may directly transfer heat from the muffler body 100, causing the temperature of the expansion plate 500 to rise and resulting in heat radiation to adjacent components.

[0081] However, this application still includes the case where both ends of the expansion plate 500 are connected to the muffler body 100 in the circumferential direction. This ensures that airflow only flows along the length of the duct, preventing airflow loss from the sides, guaranteeing airflow velocity and flow rate, and improving heat dissipation. In this application, the connection between the expansion plate 500 and the muffler body 100 can be selected according to requirements.

[0082] In another embodiment, the muffler body 100 may also be rectangular, the shrink plate 300 and the expansion plate 500 may be bent into trapezoidal plates, and the waist-shaped plate 400 may be bent into a "U" shape or a "concave" shape.

[0083] Understandably, the shape of the air guide 10 can be adapted to different vehicle models or the shape of the muffler body 100.

[0084] In some embodiments, the muffler body 100 is located entirely around the air guide 10; the air guide 10 is made of heat-insulating material. In addition to guiding airflow and increasing flow velocity, the air guide 10 also functions as a heat insulation component, effectively reducing the heat radiation impact of the muffler on surrounding components, reducing the risk of aging, cracking, or failure of surrounding components due to high temperatures, and improving the overall reliability and safety of the vehicle.

[0085] In some embodiments, the air guide 10 may also be coated with a heat-insulating material to achieve a heat-insulating effect.

[0086] In another embodiment, the muffler body 100 is disposed below the vehicle chassis. The air guide 10 is part of the vehicle chassis, which is recessed upwards to form the aforementioned air duct between the chassis and the muffler body 100.

[0087] Furthermore, the portion of the vehicle chassis near the aforementioned air duct is fitted with heat-insulating material to provide insulation and prevent heat radiation from damaging the components above the chassis.

[0088] In some embodiments, since the muffler body 100 is located at the bottom of the vehicle, the air guide 10 is located above the muffler body 100 to avoid affecting the driving height.

[0089] Furthermore, to avoid excessive vehicle height, the heat sink 200 is positioned above the muffler body 100. All heat sinks 200 are located within the air duct formed by the air guide 10.

[0090] In some embodiments, the heat sink 200 is wavy, and the extension direction of the heat sink 200 is the same as the flow direction of the airflow in the air duct. Over the same axial length, the wavy heat sink 200 occupies a larger volume than the straight heat sink 200, thus increasing its contact area with the air and improving the heat dissipation effect on the muffler body 100.

[0091] It is understandable that the extension direction of the heat sink 200 refers to the overall length direction of the heat sink 200.

[0092] Specifically, the wavy heat sink 200 has crests and troughs, and the junction of the crests and troughs is the antinode. The straight line direction passing through all the antinodes on the same heat sink 200 is the length direction of the heat sink.

[0093] In some embodiments, the muffler body 100 includes a housing. The housing is preferably made of metal. It is easy to form, and metal has good heat dissipation properties, which facilitates the dissipation of engine exhaust temperature through the metal housing.

[0094] It is understood that the heat sink 200 mentioned above is directly mounted on the outer casing of the muffler body 100. Furthermore, all references to the muffler body 100 are based primarily on the outer casing.

[0095] In some embodiments, the muffler body 100 may further include an expansion chamber formed within the housing. When exhaust gas from the engine enters the muffler, the airflow velocity decreases due to the increased cross-sectional area of ​​the expansion chamber, thereby reducing friction and collision between the airflow and the inner wall of the muffler, and lowering noise. Simultaneously, the expansion chamber alters the propagation path of sound waves, causing reflection and interference within the expansion chamber, further reducing the energy of the sound waves and improving noise reduction.

[0096] In some embodiments, the muffler body 100 may further include a resonant chamber that resonates with sound waves of a specific frequency, thereby achieving more efficient sound energy absorption and attenuation within that frequency range. This improves the noise reduction effect.

[0097] In some embodiments, the silencer body 100 may further include orifices. When airflow passes through the orifices, local turbulence and pressure changes are generated, causing sound waves to be dispersed and weakened as they pass through the orifices. At the same time, the orifice design can also increase airflow damping, further reducing the energy of the sound waves.

[0098] It is understood that the muffler body 100 of this application may include other structures in addition to the structures described above. The muffler body 100 can be a muffler structure of any form and any specification.

[0099] Furthermore, this application also provides an exhaust system including an intake pipe 600, an exhaust pipe 700, and a muffler as described above. The muffler body 100 has an intake port and an exhaust port. The intake pipe 600 is connected to and communicates with the intake port of the muffler body 100; the exhaust pipe 700 is connected to and communicates with the exhaust port of the muffler body 100. Exhaust gas generated by the engine enters the muffler body 100 through the intake pipe 600 and is discharged through the exhaust pipe 700. Because this exhaust system uses the aforementioned muffler, the entire exhaust system can more effectively dissipate heat into the air, thereby reducing the heat accumulated in the exhaust system, especially reducing heat accumulation at the muffler body 100, reducing the thermal radiation impact on surrounding components, improving the vehicle's thermal management performance, and extending the service life of surrounding components.

[0100] In some embodiments, a flange is provided at the end of the intake pipe 600 away from the exhaust pipe 700, which facilitates the connection between the intake pipe 600 and the engine.

[0101] In some embodiments, a flange is provided at the end of the exhaust pipe 700 away from the intake pipe 600, which facilitates the connection of the exhaust pipe 700 to other structures.

[0102] Furthermore, this application also provides a vehicle, including: a vehicle body and an exhaust system as described above; the exhaust system is disposed on the vehicle body; the air guide 10 has one end for guiding airflow towards the front of the vehicle body. The air guide 10 guides airflow towards the front of the vehicle body, that is, the air inlet of the constriction section 301 faces the front of the vehicle body. When the vehicle is in motion, the airflow at the front of the vehicle enters the constriction section 301 and completes the aforementioned heat dissipation process. It does not require an additional power source such as a fan, and while ensuring reduced heat radiation affecting components surrounding the exhaust system, it also offers a certain degree of economic efficiency.

[0103] In some embodiments, the air guide 10 is located between the muffler body 100 and the vehicle body. This prevents the air guide 10 from being positioned too low, which could affect the vehicle's ride height. Furthermore, the air guide 10 also serves as heat insulation, preventing heat from the muffler body 100 from being transferred to the vehicle body.

[0104] Specifically, the air guide 10 is connected to the vehicle body, the muffler body 100 is suspended and connected to the vehicle body, and the muffler body 100 is located below the air guide 10.

[0105] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A muffler characterized by comprising: It includes: Muffler body (100); A heat sink (200) is connected to the outer wall of the muffler body (100); Air guide (10) is disposed on one side of the silencer body (100). The air guide (10) is used to guide airflow and increase the airflow velocity through the heat sink (200).

2. The muffler of claim 1, wherein An air duct is formed between the air guide (10) and the silencer body (100). The air duct includes a contraction section (301), which has an air inlet and an air outlet. The contraction section (301) is gradually narrowed from the air inlet to the air outlet. The air outlet of the contraction section (301) is located on the periphery of the silencer body (100).

3. The muffler of claim 2, wherein The air duct also includes a waist-shaped section (401), which is connected to the air outlet of the contraction section (301); The surface perpendicular to the airflow direction within the duct is defined as a cross section, and the area of ​​any cross section in the waist-shaped segment (401) is equal.

4. The muffler of claim 3, wherein The air duct also includes an expansion section (501), which is connected to the end of the waist-shaped section (401) away from the contraction section (301); The expansion section (501) is gradually widened in a direction away from the contraction section (301).

5. The muffler of claim 4, wherein The air guide (10) includes a contraction plate (300) and a waist-shaped plate (400) connected to each other. The contraction plate (300) forms a contraction section (301) between itself and the muffler body (100). The waist-shaped plate (400) forms a waist-shaped section (401) between itself and the muffler body (100).

6. The muffler of claim 5, wherein The air guide (10) further includes an expansion plate (500), which is disposed at the end of the waist-shaped plate (400) away from the contraction plate (300); the expansion section (501) is formed between the expansion plate (500) and the silencer body (100).

7. The muffler according to any one of claims 1 to 6, characterized in that The silencer body (100) is located entirely around the air guide (10); The air guide (10) is made of heat-insulating material.

8. The muffler according to any one of claims 2 to 6, characterized by The heat sink (200) is wavy, and the extension direction of the heat sink (200) is the same as the flow direction of the airflow in the air duct.

9. An exhaust system characterized by, It includes an air inlet pipe (600), an air outlet pipe (700), and a muffler as described in any one of claims 1 to 6, wherein the muffler body (100) has an air inlet and an air outlet, the air inlet pipe (600) is connected to and communicates with the air inlet of the muffler body (100), and the air outlet pipe (700) is connected to and communicates with the air outlet of the muffler body (100).

10. A vehicle characterized by comprising: include: The vehicle body and the exhaust system as described in claim 9; The exhaust system is installed on the vehicle body; the air guide (10) guides the airflow into the front of the vehicle body. The air guide (10) is located between the muffler body (100) and the vehicle body.

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