Exhaust pipe assembly, exhaust system, and vehicle

Abstract

The application relates to an exhaust pipe assembly, an exhaust system and a vehicle, and belongs to the technical field of exhaust systems, and comprises an exhaust pipe and a gas storage cavity, wherein the two ends of the exhaust pipe are respectively an input end and an output end; the gas storage cavity is located outside the exhaust pipe; the gas storage cavity comprises an air inlet and an air outlet; the air inlet is used for being connected with a gas supply module; the air outlet is located at the side of the exhaust pipe, and the air outlet faces the output end of the exhaust pipe. The gas supply module is used for providing gas, the gas enters the gas storage cavity and is sprayed out from the air outlet, so that an air flow is formed around the exhaust pipe, the exhaust pipe is actively cooled, and the surface temperature of the exhaust pipe is effectively reduced. The air flow can form the effect of a wind curtain, heat is prevented from passing through the wind curtain, the influence of heat radiation on surrounding components is reduced, and structural components such as wire harnesses, rubber parts and plastic parts are prevented from being damaged under the action of heat radiation. The problems of insufficient protection and increased weight and cost of a traditional passive heat insulation mode in a compact vehicle body space are solved.

Description

Technical Field

[0001] This application relates to the technical field of exhaust systems, and more particularly to an exhaust pipe assembly, an exhaust system, and a vehicle. Background Technology

[0002] Automobiles are an important part of modern transportation, widely used for daily commuting and long-distance transport, and play an indispensable role in social and economic development and people's daily lives.

[0003] As a key component, the automotive exhaust system is primarily responsible for expelling the high-temperature exhaust gases produced by the engine and reducing noise and harmful emissions. It typically consists of an exhaust manifold, catalytic converter, muffler, and exhaust pipes.

[0004] However, exhaust pipes can reach temperatures of 400-900℃ during operation, generating intense heat radiation. Surrounding wiring harnesses, rubber components, and plastic parts are susceptible to thermal aging due to prolonged exposure to these high temperatures, such as rubber hardening and cracking, and plastic deformation, leading to performance degradation or even failure—a phenomenon known as "heat damage." Traditional passive protection methods, such as heat shields, suffer from space constraints and increased weight and cost, making them unsuitable for the compact design and high-efficiency protection requirements of modern automobiles. Utility Model Content

[0005] This application addresses, to at least some extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide an exhaust pipe assembly and vehicle, which utilizes gas supplied by an air supply module to form an airflow around the exhaust pipe, achieving active heat dissipation and reducing the surface temperature of the exhaust pipe. The airflow curtain can effectively reduce the heat radiation impact on surrounding components, preventing damage to structural components such as wiring harnesses, rubber parts, and plastic parts due to heat radiation, and solving the problems of insufficient protection and increased weight and cost of traditional passive heat insulation methods in compact vehicle body space.

[0007] To achieve the above objectives, in a first aspect, this application provides an exhaust pipe assembly, comprising: An exhaust pipe, wherein the two ends of the exhaust pipe are an input end and an output end, respectively; An air storage chamber is located outside the exhaust pipe; the air storage chamber includes an air inlet and an air outlet; The air inlet is used to connect to the air supply module; The air outlet is located on the side of the exhaust pipe and faces the output end of the exhaust pipe.

[0008] In this technical solution, a gas supply module provides gas, which enters the gas storage chamber and exits through the outlet, creating an airflow around the exhaust pipe. This actively dissipates heat from the exhaust pipe, effectively reducing its surface temperature. Furthermore, the airflow forms an air curtain, preventing heat from passing through and reducing heat radiation to surrounding components. This prevents damage to wiring harnesses, rubber parts, plastic parts, and other structural components from heat radiation. This addresses the shortcomings of traditional passive heat insulation methods, such as insufficient protection and increased weight and cost in compact vehicle bodies.

[0009] In some embodiments of this application, an annular shell is fitted onto the exhaust pipe, and the annular shell is disposed on the peripheral wall of the exhaust pipe; the gas storage cavity is formed between the annular shell and the outer wall of the exhaust pipe; and the gas outlet is opened in the annular shell.

[0010] The technical solution further clarifies the specific structural form of the gas storage chamber, which is formed by an annular shell fitted around the outer wall of the exhaust pipe and the outer wall of the exhaust pipe. This structure is simple and reliable, easy to manufacture and install, and the annular shell can provide a certain degree of protection for the exhaust pipe and effectively guide the gas flow, making the gas more evenly distributed around the exhaust pipe and enhancing the heat dissipation effect.

[0011] In some embodiments of this application, the exhaust pipe is disposed on the vehicle chassis; the air storage chamber is formed between the vehicle chassis and the sidewall of the exhaust pipe.

[0012] In the technical solution, the exhaust pipe is set on the vehicle chassis and the air storage chamber is formed by the vehicle chassis and the side wall of the exhaust pipe. This makes full use of the existing structural space of the vehicle chassis, eliminating the need for additional complex air storage chambers, reducing the number of parts and costs, improving the overall integrity and lightweighting of the vehicle, and also facilitating the compact layout of the vehicle chassis.

[0013] In some embodiments of this application, the air outlet is connected to a nozzle, and the nozzle orifice diameter is smaller than that of the air outlet.

[0014] In this technical solution, the nozzle configuration increases the velocity and concentrates the flow of gas during ejection, creating a more powerful airflow impact and achieving an air curtain. This enhances the cooling effect on the exhaust pipe surface, improves heat dissipation efficiency, and further reduces the exhaust pipe surface temperature. Furthermore, the air curtain provides thermal insulation, effectively mitigating the thermal aging problem of surrounding materials.

[0015] In some embodiments of this application, multiple air outlets are circumferentially spaced around the annular shell, and the number of nozzles is the same as the number of air outlets and they are arranged in a one-to-one correspondence.

[0016] In the technical solution, the gas is evenly sprayed out from multiple directions around the exhaust pipe, forming an all-round, dead-angle-free air curtain coverage around the exhaust pipe, ensuring that all directions of the exhaust pipe can be effectively cooled, and improving the uniformity and overall effect of heat dissipation.

[0017] In some embodiments of this application, the spacing between any two adjacent nozzles is the same; the nozzle orifice is oriented parallel to the extension direction of the exhaust pipe.

[0018] The technical solution ensures that the ejected airflow is evenly distributed and in a consistent direction, avoiding mutual interference of airflows or the formation of heat dissipation dead zones. This allows the air curtain to form stably and evenly along the extension direction of the exhaust pipe, maximizing the reduction of the exhaust pipe surface temperature and improving the stability and reliability of heat dissipation.

[0019] In some embodiments of this application, a sensor is provided on the exhaust pipe for detecting the temperature of the exhaust pipe.

[0020] In this technical solution, a sensor is installed on the exhaust pipe to detect temperature, enabling real-time monitoring of the exhaust pipe's operating temperature and transmitting the temperature signal to the vehicle control system. The vehicle control system then controls the air supply module based on the temperature signal, achieving intelligent heat dissipation control. When the exhaust pipe temperature is too high, the air supply is activated promptly to dissipate heat, effectively protecting surrounding components and preventing unnecessary energy waste, thus improving the system's intelligence and energy efficiency.

[0021] In some embodiments of this application, a valve is provided at the air inlet, and the valve is used to open or close the air inlet.

[0022] In this technical solution, the gas supply can be flexibly controlled according to the actual temperature of the exhaust pipe and the vehicle's operating requirements. When cooling is not required or under low load conditions, closing the valve reduces gas consumption and lowers energy consumption; under high-temperature conditions, opening the valve promptly supplies gas for cooling, enhancing the system's adaptability and flexibility, and improving energy efficiency.

[0023] Secondly, this application also provides an exhaust system including an aftertreatment assembly, a muffler assembly, and an exhaust pipe assembly as described above; the exhaust pipe assembly is connected to the aftertreatment assembly and the muffler assembly.

[0024] In the technical solution, the exhaust pipe assembly is combined with the aftertreatment assembly and the muffler assembly to form an exhaust system, which enables the entire exhaust system to have a dynamic air curtain heat dissipation function. This effectively solves the problem of heat damage to surrounding components caused by high temperature in traditional exhaust systems, improves the reliability and durability of the exhaust system, and at the same time reduces the weight and manufacturing cost of the system, thereby improving the overall performance of the vehicle.

[0025] Thirdly, this application also provides a vehicle, including: Body; An air compressor, wherein the air compressor is installed on the vehicle body; And an exhaust system as described above; the air inlet of the air storage chamber is connected to the output end of the air compressor.

[0026] In this technical solution, the air compressor provides gas to the air storage chamber of the exhaust pipe assembly, acting as the air supply module. This enables the exhaust system to continuously and stably perform active cooling during vehicle operation, ensuring that the exhaust pipe and surrounding components remain in good working condition under various operating conditions. This extends the service life of components, improves vehicle safety and comfort, and is of great significance for enhancing the overall performance of the vehicle.

[0027] 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

[0028] Figure 1 This is a schematic diagram of the overall structure of the exhaust pipe assembly according to an embodiment of this application; Figure 2 This is a front view of an exhaust pipe assembly according to an embodiment of this application; Figure 3 This is a side view of an exhaust pipe assembly according to an embodiment of this application; Figure 4 yes Figure 3 A cross-sectional view along the AA direction.

[0029] In the above figures: 100, exhaust pipe; 200, annular shell; 201, air storage chamber; 202, air inlet; 203, air outlet; 300, nozzle. Detailed Implementation

[0030] 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. 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. 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. 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.

[0031] 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.

[0032] It should be noted that in the automotive field, this includes exhaust pipes, which are used to expel exhaust gases produced after combustion inside the engine. Exhaust pipes are typically located on the chassis.

[0033] In existing technologies, exhaust pipes operate at extremely high temperatures, typically reaching 400-900℃, generating intense heat radiation. This causes thermal aging of surrounding wiring harnesses, rubber components, and plastic parts, leading to problems such as rubber hardening and cracking, and plastic deformation. This affects the normal operation of the vehicle and poses safety hazards. Existing passive protection methods, such as heat shields, have shortcomings such as large space requirements, increased weight and cost, and limited heat insulation effectiveness, making it difficult to meet the higher requirements of modern automobiles for exhaust system heat dissipation performance.

[0034] Based on this, this application proposes an exhaust pipe assembly and vehicle that utilizes gas supplied by an air supply module to form an airflow around the exhaust pipe, achieving active heat dissipation and reducing the surface temperature of the exhaust pipe. The airflow curtain effectively reduces the impact of heat radiation on surrounding components, preventing damage to structural components such as wiring harnesses, rubber parts, and plastic parts due to heat radiation. This solves the problems of insufficient protection and increased weight and cost associated with traditional passive heat insulation methods in compact vehicle body spaces.

[0035] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0036] Referring to all the accompanying drawings, in an illustrative embodiment of the exhaust pipe assembly and vehicle of this application, the exhaust pipe assembly includes an exhaust pipe 100, with an input end and an output end at its two ends. The exhaust pipe 100 is an important component of the engine emission system of automobiles and other vehicles, with its input end connected to the engine and its output end extending to the rear of the vehicle. Its main function is to exhaust the exhaust gases produced by engine combustion outside the vehicle, reducing the harm of harmful gases to the in-vehicle environment and human health, while also reducing noise. It can also optimize the engine's intake and exhaust efficiency to some extent by adjusting back pressure, thereby improving vehicle performance. Some high-performance exhaust pipes 100 can also enhance the exhaust sound effect, improving the driving experience.

[0037] In some embodiments, the exhaust pipe assembly further includes an air storage chamber 201 located outside the exhaust pipe 100; the air storage chamber 201 includes an air inlet 202 and an air outlet 203. The air inlet 202 is used to connect to an air supply module. The air outlet 203 is located on the side of the exhaust pipe 100 and faces the output end of the exhaust pipe 100.

[0038] The above solution utilizes a gas supply module to provide gas, which enters the gas storage chamber 201 and exits from the gas outlet 203, creating an airflow around the exhaust pipe 100. This actively dissipates heat from the exhaust pipe 100, effectively reducing its surface temperature. Furthermore, the airflow forms an air curtain, preventing heat from passing through and reducing heat radiation to surrounding components, thus preventing damage to wiring harnesses, rubber parts, plastic parts, and other structural components from heat radiation. This solves the problems of insufficient protection and increased weight and cost associated with traditional passive heat insulation methods in compact vehicle bodies.

[0039] In some embodiments, the exhaust pipe 100 is a circular pipe. The circular pipe shape ensures less resistance when gas flows inside the pipe, allowing exhaust gas to be discharged more smoothly and improving exhaust efficiency. Secondly, the circular pipe structure has more uniform strength in all directions, which can better withstand the high temperature and high pressure environment generated during engine operation, enhancing the durability and reliability of the exhaust pipe 100.

[0040] In some embodiments, the opening direction of the air outlet 203 is parallel to the axial direction of the exhaust pipe 100. This parallel air outlet direction allows the gas ejected from the air storage chamber 201 to flow along the extension direction of the exhaust pipe 100, forming a linear airflow evenly distributed along the exhaust pipe 100. This achieves an air curtain effect, providing thermal insulation and preventing the high temperature of the exhaust pipe 100 from affecting surrounding structural components. Furthermore, the high-speed airflow ejected through the air outlet 203 effectively dissipates heat from the exhaust pipe 100.

[0041] In some embodiments, multiple air outlets 203 are arranged circumferentially around the exhaust pipe 100. This allows gas to be evenly ejected from multiple directions around the exhaust pipe 100, forming an all-round, dead-angle-free air curtain coverage around the exhaust pipe 100, ensuring that the exhaust pipe 100 can be effectively cooled from all directions, and improving the uniformity and overall effect of heat dissipation.

[0042] In some embodiments, the air outlet 203 is a circular hole. This facilitates its installation and reduces production costs.

[0043] In another embodiment, the air outlet 203 is arc-shaped, and the axis of the arc-shaped air outlet 203 is collinear with the axis of the exhaust pipe 100. This results in the output airflow having an arc-shaped cross-section that surrounds the exhaust pipe 100, creating a more enveloping air curtain. This effectively isolates and reduces the surface temperature of the exhaust pipe 100, reducing the radiative impact of heat on surrounding components and preventing damage to structural components such as wiring harnesses, rubber parts, and plastic parts due to heat radiation.

[0044] In another embodiment, to ensure the air curtain effectively covers and insulates the exhaust pipe 100, the air outlet 203 is annular and surrounds the exhaust pipe 100. The gas ejected through the air outlet 203 forms a complete annular airflow, which is evenly distributed around the exhaust pipe 100, achieving all-round coverage and heat dissipation of the exhaust pipe 100. This effectively reduces the surface temperature of the exhaust pipe 100, reduces the radiative impact of heat on surrounding components, and prevents damage to structural components such as wiring harnesses, rubber parts, and plastic parts due to heat radiation, thereby improving component lifespan and system reliability.

[0045] In some embodiments, an annular shell 200 is fitted onto the exhaust pipe 100, and the annular shell 200 is disposed on the peripheral wall of the exhaust pipe 100; an air storage cavity 201 is formed between the annular shell 200 and the outer wall of the exhaust pipe 100; and an air outlet 203 is opened in the annular shell 200. The specific structural form of the air storage cavity 201 is further clarified, namely, it is formed by the annular shell 200 fitted onto the peripheral wall of the exhaust pipe 100 and the outer wall of the exhaust pipe 100. This structure is simple and reliable, easy to manufacture and install, and the annular shell 200 can provide a certain degree of protection for the exhaust pipe 100 and effectively guide the gas flow, making the gas more evenly distributed around the exhaust pipe 100, thus enhancing the heat dissipation effect.

[0046] It is worth noting that the ring housing 200 can be detachably connected to the exhaust pipe 100. When repairing or replacing the exhaust pipe assembly, the ring housing 200 can be quickly separated from the exhaust pipe 100, which facilitates the inspection or replacement of internal parts, greatly improving the convenience and efficiency of maintenance.

[0047] Furthermore, the annular shell 200 can be integrally formed with the exhaust pipe 100. This improves the overall structural strength, reduces the risk of loosening and leakage, and enhances the reliability and durability of the components in harsh working environments such as high temperatures and vibrations.

[0048] In another embodiment, the exhaust pipe 100 is disposed on the vehicle chassis; the air storage chamber 201 is formed between the vehicle chassis and the side wall of the exhaust pipe 100. The exhaust pipe 100 being disposed on the vehicle chassis and the air storage chamber 201 being formed between the vehicle chassis and the side wall of the exhaust pipe 100 fully utilizes the existing structural space of the vehicle chassis, eliminating the need for an additional complex air storage chamber 201 body, reducing the number of parts and costs, improving the overall integrity and lightweighting of the vehicle, and also facilitating a compact layout of the vehicle chassis.

[0049] Specifically, the vehicle chassis can be recessed to form a receiving space through which the exhaust pipe 100 passes, and the aforementioned air storage chamber 201 is formed between the inner wall of the receiving space and the outer wall of the exhaust pipe 100.

[0050] In some embodiments, the air outlet 203 is connected to a nozzle 300, the orifice diameter of which is smaller than that of the air outlet 203. The nozzle 300 increases the velocity and concentrates the flow of the gas during ejection, creating a stronger airflow impact and achieving an air curtain. This enhances the cooling effect on the surface of the exhaust pipe 100, improves heat dissipation efficiency, and further reduces the surface temperature of the exhaust pipe 100. Furthermore, the air curtain provides thermal insulation, effectively mitigating the thermal aging problem of surrounding materials.

[0051] Furthermore, the sum of the cross-sectional areas of all nozzles 300 is smaller than the cross-sectional area of ​​the air inlet 202. This further increases the airflow velocity through the nozzles 300, making the airflow curtain effect around the exhaust pipe 100 stronger, enhancing the heat dissipation effect, more effectively reducing the surface temperature of the exhaust pipe 100, and reducing the radiative impact of heat on surrounding components.

[0052] In some embodiments, the outlet 203 of the annular shell 200 has a threaded section protruding away from the annular shell 200, and the nozzle 300 is threadedly connected to the threaded section. The threaded connection makes the installation and removal of the nozzle 300 more convenient, facilitating quick operation during maintenance or replacement of the nozzle 300 and improving system maintainability. Secondly, the threaded section ensures a tight connection between the nozzle 300 and the outlet 203, effectively preventing gas leakage under high pressure, ensuring stable airflow output, thereby enhancing heat dissipation and the integrity of the air curtain. Furthermore, the threaded connection allows for flexible adjustment of the nozzle 300 type and specifications according to actual needs; for example, replacing nozzles 300 with different orifice diameters or shapes can optimize airflow characteristics, adapting to different heat dissipation requirements or operating conditions, thus improving the system's flexibility and adaptability.

[0053] In some embodiments, the nozzle 300 has an adjustable nozzle position. This design allows for flexible adjustment of the airflow direction and range according to actual heat dissipation needs, ensuring optimal heat dissipation under different operating conditions. For example, when certain areas of the exhaust pipe 100 are hot, the adjustable nozzle 300 directs the airflow more concentratedly to these hot areas, improving heat dissipation efficiency. Secondly, the adjustable nozzle position increases the system's adaptability and versatility, better matching different vehicle models and exhaust pipe 100 layouts, meeting diverse design requirements. Furthermore, this flexibility helps optimize the formation and distribution of the air curtain, reducing airflow interference with the surrounding environment, while improving aerodynamic performance and reducing noise.

[0054] In some embodiments, there may be only one air outlet 203, and multiple nozzles 300, all of which are connected to the air outlet 203.

[0055] Specifically, multiple nozzles 300 are arranged circumferentially around the annular shell 200; the nozzles 300 can be connected to the air outlet 203 through separately provided pipelines.

[0056] In some embodiments, multiple air outlets 203 are arranged circumferentially around the annular shell 200, and the number of nozzles 300 is the same as the number of air outlets 203 and they are arranged in a one-to-one correspondence. This allows gas to be evenly ejected from multiple directions around the exhaust pipe 100, forming an all-round, dead-angle-free air curtain coverage around the exhaust pipe 100, ensuring that the exhaust pipe 100 can be effectively cooled from all directions, and improving the uniformity and overall effect of heat dissipation.

[0057] In some embodiments, the spacing between any two adjacent nozzles 300 is the same; the nozzle orifice orientation of the nozzle 300 is parallel to the extension direction of the exhaust pipe 100. This ensures that the ejected airflow is uniformly distributed and oriented in the same direction, avoids mutual interference of airflows or the formation of heat dissipation dead zones, and enables the air curtain to form stably and uniformly along the extension direction of the exhaust pipe 100, maximizing the reduction of the surface temperature of the exhaust pipe 100 and improving the stability and reliability of heat dissipation.

[0058] In some embodiments, a sensor is provided on the exhaust pipe 100 to detect the temperature of the exhaust pipe 100. By installing a sensor on the exhaust pipe 100 to detect the temperature, the operating temperature status of the exhaust pipe 100 can be monitored in real time, and the temperature signal can be transmitted to the vehicle control system. The vehicle control system controls the operation of the air supply module based on the temperature signal, achieving intelligent heat dissipation control. When the temperature of the exhaust pipe 100 is too high, the air supply is activated in a timely manner to dissipate heat, effectively protecting surrounding components and avoiding unnecessary energy waste, thus improving the system's intelligence and energy-saving effect.

[0059] Furthermore, this sensor is a temperature sensor.

[0060] In some embodiments, a valve is provided at the air intake 202, which is used to open or close the air intake 202. The gas supply can be flexibly controlled according to the actual temperature of the exhaust pipe 100 and the operating requirements of the vehicle. When cooling is not required or under low load conditions, closing the valve can reduce gas consumption and lower energy consumption; under high temperature conditions, opening the valve can supply gas in a timely manner for cooling, enhancing the adaptability and flexibility of the system and improving energy utilization efficiency.

[0061] In some embodiments, the valve is a solenoid valve. Solenoid valves enable rapid and precise on / off control with a fast response time. Furthermore, solenoid valves can be remotely controlled, allowing users to operate them from inside the vehicle. The exhaust pipe assembly can control the gas flow between the air supply module and the air storage chamber 201 in real time according to actual needs, such as changes in the temperature of the exhaust pipe 100 or adjustments to vehicle operating conditions, achieving precise regulation of the heat dissipation process of the exhaust pipe 100.

[0062] In some embodiments, multiple air storage chambers 201 are spaced apart along the length of the exhaust pipe 100. That is, multiple air curtain assemblies formed by the annular shell 200 and the jet nozzle are arranged along the length of the exhaust pipe 100. Because the exhaust pipe 100 is relatively long, a single section of air curtain is insufficient to cover the entire exhaust pipe 100. Therefore, multiple air curtain assemblies are designed to be evenly distributed around the exhaust pipe 100, forming multiple airflow coverages, enhancing the heat dissipation effect and reducing the radiative impact of heat on surrounding components. At the same time, multiple air curtain assemblies can evenly distribute the heat dissipation task in various areas of the exhaust pipe 100, avoiding localized high temperature problems, improving heat dissipation efficiency and uniformity, extending the service life of the exhaust pipe 100 and related components, and improving the safety and reliability of the vehicle.

[0063] In some embodiments, the air supply module can be an air compressor installed in the vehicle. It can also be connected to the engine intake pipe. When the vehicle is in motion, the high-speed airflow entering through the grille enters the air storage chamber 201 and is output through the air outlet 203 to form an air curtain. Compared to an air compressor, only a pipeline is needed to connect the air inlet 202 of the air storage chamber 201 to the vehicle's air intake, saving costs.

[0064] It is worth noting that, in order to ensure that the wiring harness, rubber parts, and plastic parts are not affected by heat radiation, they are located outside the annular shell 200. Taking the spray direction of the nozzle as a reference line, the wiring harness, rubber parts, and plastic parts are located on the side of the reference line away from the exhaust pipe 100, thereby ensuring that the air curtain is located between the exhaust pipe 100 and the wiring harness, rubber parts, and plastic parts.

[0065] In some embodiments, a pressure relief valve is also provided on the annular housing 200. When the pressure in the air storage chamber 201 within the annular housing 200 becomes excessive, the pressure relief valve releases the gas from the air storage chamber 201 to reduce the pressure within the air storage chamber 201. This prevents damage to the annular housing 200 or the exhaust pipe assembly due to excessive pressure, ensuring safe and reliable system operation. Simultaneously, the pressure relief valve maintains stable pressure within the air storage chamber 201, preventing pressure fluctuations from affecting the airflow injection effect and ensuring stable air curtain formation and efficient heat dissipation. Furthermore, it protects air supply modules, such as the air compressor or intake pipe, from damage caused by excessive pressure, extending their service life, ensuring the normal operation of the entire exhaust pipe assembly and exhaust system, and improving vehicle safety and reliability.

[0066] In another embodiment, a valve body is provided on the annular housing 200, and a pressure sensor is provided in the air storage chamber 201 inside the annular housing 200. The pressure sensor is connected to the valve body. When the pressure sensor detects that the pressure value inside the annular housing 200 is higher than a threshold, it controls the valve body to open. This design can effectively prevent the air storage chamber 201 from rupturing due to excessive pressure, ensuring the safe operation of the exhaust pipe assembly and even the entire vehicle.

[0067] Secondly, this application also provides an exhaust system including an aftertreatment assembly, a muffler assembly, and an exhaust pipe assembly as described above; the exhaust pipe assembly is connected to the aftertreatment assembly and the muffler assembly.

[0068] In the technical solution, the exhaust pipe assembly is combined with the aftertreatment assembly and the muffler assembly to form an exhaust system, which enables the entire exhaust system to have a dynamic air curtain heat dissipation function. This effectively solves the problem of heat damage to surrounding components caused by high temperature in traditional exhaust systems, improves the reliability and durability of the exhaust system, and at the same time reduces the weight and manufacturing cost of the system, thereby improving the overall performance of the vehicle.

[0069] Thirdly, this application also provides a vehicle, including a body. The body provides a platform for mounting and supporting various components of the vehicle, including the engine, chassis, electrical system, and exhaust system, ensuring the rational layout and stable operation of each component. It constitutes the overall frame of the vehicle, maintaining the shape and structural integrity of the vehicle, and providing a safe and comfortable riding and loading space for passengers and cargo.

[0070] In some embodiments, the vehicle also includes an air compressor, which is mounted on the vehicle body. An air compressor is a device that converts mechanical energy into gas pressure energy, storing energy through compressed air and outputting a high-pressure air source. Its core function is to provide power for various pneumatic tools and equipment. The compressed air has stable pressure, enabling precise power control, and is clean and free of pollutants, making it suitable for environments with high environmental requirements, such as food and pharmaceutical industries. Furthermore, compressed air is easy to store and transport over long distances, flexibly adapting to different working conditions. Compared to electric drive, it is safer in explosion-proof and moisture-proof environments, effectively improving production efficiency and operational safety.

[0071] In some embodiments, the vehicle further includes an exhaust system as described above; the air inlet 202 of the air reservoir 201 is connected to the output end of the air compressor. The air compressor provides gas to the air reservoir 201 of the exhaust pipe assembly, i.e., the air compressor acts as an air supply module. This enables the exhaust system to continuously and stably perform active cooling during vehicle operation, ensuring that the exhaust pipe 100 and surrounding components are in good working condition under various operating conditions, extending the service life of the components, improving vehicle safety and comfort, and playing an important role in enhancing the overall performance of the vehicle.

[0072] In some embodiments, the vehicle also includes a control unit. Taking an exhaust pipe assembly without a valve as an example, a sensor monitors the temperature of the exhaust pipe 100 and obtains the exhaust temperature value, which can be transmitted to the vehicle control unit. A preset temperature threshold is provided; when the exhaust temperature value exceeds the threshold, it indicates that the temperature of the exhaust pipe 100 is high, potentially causing damage to surrounding components. At this time, the air supply module is activated; that is, the air compressor is turned on. The air compressor delivers airflow to the air storage chamber 201, and then the airflow is ejected through the exhaust port, thereby forming an air curtain around the exhaust pipe 100.

[0073] In another embodiment, taking an exhaust pipe assembly equipped with a valve as an example, a sensor monitors the temperature of the exhaust pipe 100 and obtains the exhaust temperature value, which can be transmitted to the vehicle control unit. A preset temperature threshold is established; when the exhaust temperature value exceeds the threshold, it indicates that the temperature of the exhaust pipe 100 is too high, potentially causing damage to surrounding components. At this time, the air supply module is activated; that is, the air compressor is turned on. Simultaneously, the valve is opened. The air compressor delivers airflow to the air storage chamber 201, and then the airflow is ejected through the exhaust port, thereby forming an air curtain around the exhaust pipe 100.

[0074] In another embodiment, the air compressor may need to operate continuously. Therefore, during normal operation, the valve closes the air inlet 202. Sensors monitor the temperature of the exhaust pipe 100 and obtain the exhaust temperature value, which can be transmitted to the vehicle control unit. A preset temperature threshold is provided; when the exhaust temperature value exceeds the threshold, it indicates that the temperature of the exhaust pipe 100 is high, potentially causing damage to surrounding components. At this time, the valve is opened. The air compressor delivers airflow to the air storage chamber 201, and then the airflow is ejected through the exhaust port, thereby forming an air curtain around the exhaust pipe 100.

[0075] 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. An exhaust pipe assembly, characterized in that, It includes: An exhaust pipe (100) has an input end and an output end at its two ends, respectively. An air storage chamber (201) is located outside the exhaust pipe (100); the air storage chamber (201) includes an air inlet (202) and an air outlet (203); The air inlet (202) is used to connect to the air supply module; The air outlet (203) is located on the side of the exhaust pipe (100) and faces the output end of the exhaust pipe (100).

2. The exhaust pipe assembly according to claim 1, characterized in that, An annular shell (200) is fitted onto the exhaust pipe (100), and the annular shell (200) is disposed on the peripheral wall of the exhaust pipe (100); the gas storage cavity (201) is formed between the annular shell (200) and the outer wall of the exhaust pipe (100); the gas outlet (203) is opened on the annular shell (200).

3. The exhaust pipe assembly according to claim 1, characterized in that, The exhaust pipe (100) is installed on the vehicle chassis; the air storage chamber (201) is formed between the vehicle chassis and the side wall of the exhaust pipe (100).

4. The exhaust pipe assembly according to claim 2, characterized in that, The air outlet (203) is connected to a nozzle (300), and the nozzle (300) has a smaller orifice diameter than the air outlet (203).

5. The exhaust pipe assembly according to claim 4, characterized in that, The air outlets (203) are arranged in multiple circumferentially around the annular shell (200), and the number of nozzles (300) is the same as the number of air outlets (203) and they are arranged in a one-to-one correspondence.

6. The exhaust pipe assembly according to claim 4, characterized in that, The spacing between any two adjacent nozzles (300) is the same; the nozzles (300) are oriented parallel to the extension direction of the exhaust pipe (100).

7. The exhaust pipe assembly according to claim 1, characterized in that, A sensor is provided on the exhaust pipe (100) for detecting the temperature of the exhaust pipe (100).

8. The exhaust pipe assembly according to claim 1, characterized in that, A valve is provided at the air inlet (202), and the valve is used to open or close the air inlet (202).

9. An exhaust system, characterized in that, It includes an aftertreatment assembly, a muffler assembly, and an exhaust pipe assembly as described in any one of claims 1 to 8; the exhaust pipe assembly is connected to the aftertreatment assembly and the muffler assembly.

10. A vehicle, characterized in that, include: Body; An air compressor, wherein the air compressor is installed on the vehicle body; And the exhaust system as described in claim 9; The air inlet (202) of the air storage chamber (201) is connected to the output end of the air compressor.

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