Front compartment exhaust system and vehicle having the same

Abstract

The utility model discloses a front cabin exhaust system and vehicle with it, front cabin exhaust system includes: engine, front end module, front end module is located at the front side of engine, exhaust component, exhaust component includes exhaust device and deputy silencer, exhaust device is located between engine and front end module, exhaust device communicates with the exhaust port of engine for catalyzing the exhaust to carry out catalytic muffling, and deputy silencer is embedded on the front end module and communicates with exhaust device. According to the front cabin exhaust system of the utility model, through being equipped with exhaust device and deputy silencer, can improve the problem of the insufficient volume of silencer, improve NVH performance, through the exhaust device and deputy silencer are located in the front cabin of vehicle, utilize the space in the front end module to place deputy silencer, can make the arrangement of exhaust component more compact, save the arrangement space of exhaust component, thereby avoid the space in the car is crowded, leave more space for the arrangement of battery pack, guarantee the safety performance and service life of battery pack.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a front compartment exhaust system and a vehicle having the same. Background Technology

[0002] With the further development of new energy vehicles and increasingly stringent laws and regulations, improving the pure electric range of hybrid vehicles is a challenge that companies are currently facing. Existing exhaust pipes usually run from the front of the vehicle through the bottom to the rear, squeezing the interior space and encroaching on the space of the battery pack, which seriously affects the safety and lifespan of the battery pack. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a front compartment exhaust system, wherein the exhaust components of the front compartment exhaust system do not need to extend from the front to the rear of the vehicle, thus avoiding encroachment on interior space, leaving more space for the battery pack arrangement, and ensuring the safety performance and service life of the battery pack.

[0004] This utility model also proposes a vehicle that includes the aforementioned front compartment exhaust system.

[0005] According to an embodiment of the present invention, the front compartment exhaust system includes: an engine; a front-end module, the front-end module being disposed on the front side of the engine; and an exhaust assembly, the exhaust assembly including an exhaust device and a secondary muffler, the exhaust device being disposed between the engine and the front-end module, the exhaust device being connected to the exhaust port of the engine for catalytic muffler of the exhaust, and the secondary muffler being embedded in the front-end module and connected to the exhaust device.

[0006] According to the front compartment exhaust system of this utility model embodiment, by simultaneously providing an exhaust device for catalytic silencing of exhaust gas and an auxiliary muffler, the problem of insufficient muffler volume can be improved, thereby enhancing NVH performance. By placing both the exhaust device and the auxiliary muffler in the front compartment of the vehicle, utilizing the space within the front module to house the auxiliary muffler, the exhaust assembly arrangement can be more compact, saving space, reducing weight, and lowering manufacturing costs. Firstly, the vehicle floor does not need to protrude into the passenger compartment to avoid the exhaust pipe, providing a better space experience for passengers, simplifying the vehicle chassis design, and reducing manufacturing difficulty and production costs. Secondly, it avoids the battery pack being affected by the high temperature of the exhaust pipe, ensuring the battery pack operates normally in good condition, improving battery pack safety, and relatively extending battery pack lifespan. Thirdly, the space saved by the exhaust assembly can be used to arrange the battery pack, thereby increasing its volume and capacity, improving vehicle range, and enhancing the user experience.

[0007] In addition, the front compartment exhaust system according to this utility model may also have the following additional technical features: In some embodiments, the front-end module includes a bracket, a heat sink, and an electric fan. The auxiliary muffler, the heat sink, and the electric fan are all mounted on the bracket. The heat sink and the electric fan are arranged opposite each other in the front-to-back direction. The auxiliary muffler is located on one side of the heat sink and the electric fan in the left-to-right direction and is spaced apart from them.

[0008] In some embodiments, the exhaust system includes a catalytic converter and a main muffler, the catalytic converter and the main muffler being integrated into one unit, the catalytic converter connecting the main muffler to the exhaust port of the engine, the main muffler connecting to the auxiliary muffler, and at least one of the main muffler and the auxiliary muffler having an exhaust pipe.

[0009] In some embodiments, the main muffler has a first muffler structure and a second muffler structure. The inlet of the first muffler structure is connected to the end of the catalytic converter opposite to the exhaust port of the engine. The outlet of the first muffler structure is connected to the inlet of the auxiliary muffler. The outlet of the auxiliary muffler structure is connected to the inlet of the second muffler structure. The exhaust pipe is connected to the outlet of the second muffler structure.

[0010] In some embodiments, the exhaust pipe is directed downwards and / or backwards.

[0011] In some embodiments, the main muffler and the auxiliary muffler are connected by a connecting pipe, at least a portion of which is a corrugated pipe.

[0012] In some embodiments, the main muffler and the auxiliary muffler are connected by a connecting pipe, the surface of which is coated with a first heat insulation layer.

[0013] In some embodiments, the surfaces of the exhaust device and / or the auxiliary muffler are coated with a second heat insulation layer.

[0014] In some embodiments, the exhaust device is provided with a first bracket, which is connected to the engine by fasteners; and / or, the auxiliary muffler is provided with a second bracket, which is connected to the front-end module by fasteners.

[0015] This utility model also provides a vehicle having the above-described embodiments.

[0016] According to the vehicle embodiment of this utility model, by providing the aforementioned front compartment exhaust system, and simultaneously providing an exhaust device and an auxiliary muffler for catalytic silencing of exhaust gas, the problem of insufficient muffler volume can be improved, thereby enhancing NVH performance. By placing both the exhaust device and the auxiliary muffler within the front compartment of the vehicle, utilizing the space within the front module to house the auxiliary muffler, the exhaust assembly arrangement can be made more compact, saving space, reducing weight, and lowering manufacturing costs. Firstly, the vehicle floor does not need to protrude into the passenger compartment to avoid the exhaust pipe, providing a better spatial experience for passengers, simplifying the vehicle chassis design, and reducing manufacturing difficulty and production costs. Secondly, it avoids the battery pack being affected by the high temperature of the exhaust pipe, ensuring the battery pack operates normally in good condition, improving battery pack safety, and relatively extending battery pack lifespan. Thirdly, the space saved by the exhaust assembly can be used to arrange the battery pack, thereby increasing its volume and capacity, improving the vehicle's range, and enhancing the user experience.

[0017] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a right view of the front compartment exhaust system according to an embodiment of the present utility model, wherein the front end module is not shown; Figure 2 This is a perspective view of the front compartment exhaust system according to an embodiment of the present utility model, wherein the front end module is not shown; Figure 3This is a perspective view of the exhaust assembly of the front cabin exhaust system according to an embodiment of the present utility model; Figure 4 This is a right view of the exhaust assembly of the front cabin exhaust system according to an embodiment of the present utility model; Figure 5 This is a rear view of the front module of the front cabin exhaust system and the auxiliary muffler according to an embodiment of the present utility model; Figure 6 This is a front view of the front module of the front cabin exhaust system and the auxiliary muffler according to an embodiment of the present utility model.

[0019] Figure label: 100. Front cabin exhaust system; 1. Engine; 2. Front-end module; 21. Bracket; 22. Heat sink; 23. Electric fan; 3. Exhaust assembly; 31. Exhaust device; 311. Catalyst; 312. Main muffler; 313. First bracket; 32. Secondary muffler; 321. Second bracket; 33. Connecting pipe; 331. Intake pipe; 332. Exhaust pipe. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly 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 communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The front cabin exhaust system 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0025] like Figure 1 and attached Figure 5 As shown, a front compartment exhaust system 100 according to an embodiment of the present invention includes an engine 1, a front-end module 2, and an exhaust assembly 3.

[0026] Specifically, refer to the attached document. Figure 1 Appendix Figure 4 and attached Figure 5 As shown, the front-end module 2 is located on the front side of the engine 1 (e.g., Figure 1 As shown), the exhaust assembly 3 includes an exhaust device 31 and a secondary muffler 32. The exhaust device 31 is located between the engine 1 and the front-end module 2 and is connected to the exhaust port of the engine 1 for catalytic muffler of the exhaust. The secondary muffler 32 is embedded in the front-end module 2 and is connected to the exhaust device 31. The secondary muffler 32 is hidden in the front-end module 2.

[0027] Understandably, by simultaneously equipping the exhaust device 31 for catalytic muffler and the auxiliary muffler 32, the problem of insufficient muffler volume can be improved, thereby enhancing NVH (Noise, Vibration, and Harshness) performance. By placing both the exhaust device 31 and the auxiliary muffler 32 within the vehicle's front compartment, utilizing the space within the front module 2 to house the auxiliary muffler 32, the exhaust assembly 3 can be arranged more compactly, saving space, reducing weight, and lowering manufacturing costs.

[0028] Furthermore, by placing both the exhaust system 31 and the auxiliary muffler 32 in the front compartment of the vehicle, the exhaust pipe of the exhaust assembly 3 can be prevented from extending from the front to the rear of the vehicle. Firstly, the vehicle floor does not need to protrude into the passenger compartment to avoid the exhaust pipe, providing a better space experience for the occupants, simplifying the design of the vehicle chassis, and reducing the manufacturing difficulty and production cost of the vehicle. Secondly, it can prevent the battery pack from being affected by the high temperature of the exhaust pipe, ensuring that the battery pack can work normally in good condition, improving the safety performance of the battery pack, and relatively extending the service life of the battery pack. Thirdly, the space saved by the exhaust assembly 3 can be used to arrange the battery pack, thereby increasing the volume and capacity of the battery pack, improving the vehicle's range, and enhancing the user experience.

[0029] Furthermore, compared to existing solutions that place the muffler at the rear of the vehicle, this application can also increase the vehicle's luggage compartment space or the space for accommodating the rear-drive motor. In addition, for pure electric vehicles and hybrid vehicles on the same platform, the front exhaust system 100 of this utility model allows both models to share the same type or the same Y-axis size battery pack, saving the manpower, capital, and time costs of developing a new battery pack. The vehicle floor plate for assembling the battery pack can also be universal, further reducing costs.

[0030] It should be noted that when the engine 1 is placed on the vehicle, the front side is the exhaust side of the engine 1. Placing the exhaust assembly 3 on the exhaust side of the engine 1 allows the exhaust assembly 3 to be arranged on the side away from the driver's cabin, reducing the risk of heat damage.

[0031] It should be noted that the secondary silencer 32 can be made by fixing porous sound-absorbing material to the inner wall of the airflow channel or arranging it in a certain way in the pipe. When sound waves enter the secondary silencer 32, some of the sound energy is converted into heat energy and dissipated through friction in the pores of the porous sound-absorbing material, thereby achieving the purpose of weakening the sound waves. The secondary silencer 32 can also be composed of tubes and chambers with abrupt interface. When sound waves containing various frequency components enter the first short tube, only sound waves of certain frequencies near the natural frequency of the first mesh can pass through the mesh to reach the opening of the second short tube, while other frequency sound waves cannot pass through the mesh and can only be reflected back and forth in the small chamber. By selecting appropriate tubes and chambers for combination, certain components of noise can be filtered out, thereby achieving the purpose of noise reduction. Depending on the arrangement space, the outer casing of the secondary silencer 32 can be processed into a suitable shape.

[0032] According to the front compartment exhaust system 100 of this utility model embodiment, by simultaneously providing an exhaust device 31 for catalytic silencing of exhaust and an auxiliary muffler 32, the problem of insufficient muffler volume can be improved, thereby enhancing NVH performance. By placing both the exhaust device 31 and the auxiliary muffler 32 within the front compartment of the vehicle, and utilizing the space within the front module 2 to house the auxiliary muffler 32, the arrangement of the exhaust assembly 3 can be made more compact, saving space, reducing weight, and lowering production costs. Firstly, the vehicle floor does not need to protrude into the passenger compartment to avoid the exhaust pipe, providing a better spatial experience for passengers, simplifying the vehicle chassis design, and reducing manufacturing difficulty and production costs. Secondly, it avoids the battery pack being affected by the high temperature of the exhaust pipe, ensuring the battery pack operates normally in good condition, improving battery pack safety, and relatively extending battery pack lifespan. Thirdly, the space saved by the exhaust assembly 3 can be used to arrange the battery pack, thereby increasing its volume and capacity, improving vehicle range, and enhancing user experience.

[0033] In some embodiments of this utility model, in conjunction with the reference appendix Figure 5 and attached Figure 6 As shown, the front-end module 2 includes a bracket 21, a heat sink 22, and an electric fan 23. The auxiliary muffler 32, heat sink 22, and electric fan 23 are all mounted on the bracket 21. The heat sink 22 and electric fan 23 are positioned in the front-to-back direction (e.g.,...). Figure 1 The auxiliary muffler 32 is positioned relative to the heat sink 22 and the electric fan 23 along the left-right direction (as shown). Figure 5 (as shown) on one side and spaced apart.

[0034] It is understandable that the radiator 22 and the electric fan 23 together constitute the cooling system of the engine 1. The radiator 22 is responsible for absorbing the heat of the engine 1, while the electric fan 23 accelerates the evaporation of heat by forcing airflow. In this application, the auxiliary muffler 32 is located on one side of the radiator 22 and the electric fan 23. The space on one side of the electric fan 23 in the left and right direction can be used to make the auxiliary muffler 32 close to the exhaust device 31, which further makes the arrangement of the exhaust assembly 3 more compact.

[0035] In some embodiments of this utility model, reference is made to the appendix. Figure 3 and attached Figure 4 As shown, the exhaust device 31 includes a catalytic converter 311 and a main muffler 312. The catalytic converter 311 and the main muffler 312 are integrated into one unit. The catalytic converter 311 connects the main muffler 312 to the exhaust port of the engine 1. The main muffler 312 is connected to the auxiliary muffler 32. At least one of the main muffler 312 and the auxiliary muffler 32 is provided with an exhaust pipe.

[0036] Understandably, the catalytic converter 311, under the action of a catalyst, can convert harmful carbon monoxide, hydrocarbons, and nitrogen oxides in exhaust gas into harmless carbon dioxide, nitrogen, and water through oxidation, reduction, water-based gas reactions, and water vapor reforming reactions. Optionally, the catalytic converter 311 can be appropriately shaped according to the catalytic conversion core. The muffler can consist of various silencing units, such as expansion chambers and resonance chambers, composed of pipes, baffles, and other components, causing sound waves to reflect and interfere during propagation, reducing sound energy and thus achieving silencing. Alternatively, it can fill the area around the internal exhaust and gas supply pipes with sound-absorbing material to absorb sound energy, thereby achieving silencing.

[0037] This invention integrates the catalytic converter 311 and the main muffler 312 into one unit. Firstly, the integrated design reduces the number of parts in the exhaust assembly 3, lowers manufacturing costs, and reduces the weight of the front exhaust system 100. Secondly, since the catalytic converter 311 requires high temperatures (above approximately 300°C) to operate efficiently, and the area near the main muffler 312 has a higher temperature, this design helps the catalytic converter 311 reach its operating temperature quickly, improving catalytic efficiency. Thirdly, the exhaust device 31 is compactly arranged with the engine 1, has a regular appearance, resembling a cuboid structure, and is highly adaptable, allowing for platform-based design and installation on different vehicles.

[0038] Understandably, after the exhaust from engine 1 is discharged from the exhaust port, it first enters the catalytic converter 311 of the exhaust device 31. After being catalyzed by the catalytic converter 311, it flows to the main muffler 312. After being initially silenced by the main muffler 312, it flows to the auxiliary muffler 32, where the auxiliary muffler 32 performs further silencer treatment on the exhaust.

[0039] Optionally, at least one of the main muffler 312 and the auxiliary muffler 32 is provided with an exhaust pipe. When only the auxiliary muffler 32 is provided with an exhaust pipe and the main muffler 312 is not provided with an exhaust pipe, the exhaust gas that has undergone silencing treatment in the auxiliary muffler 32 can be directly discharged through the exhaust pipe on the auxiliary muffler 32. When only the main muffler 312 is provided with an exhaust pipe and the auxiliary muffler 32 is not provided with an exhaust pipe, the exhaust gas that has undergone silencing treatment in the auxiliary muffler 32 flows back to the main muffler 312, and after final silencing treatment, it is discharged into the atmosphere through the exhaust pipe on the main muffler 312. When both the auxiliary muffler 32 and the main muffler 312 are provided with exhaust pipes, part of the exhaust gas that has undergone silencing treatment in the auxiliary muffler 32 is directly discharged through the exhaust pipe on the auxiliary muffler 32, and part of the exhaust gas flows back to the main muffler 312, and after final silencing treatment, it is discharged into the atmosphere through the exhaust pipe on the main muffler 312.

[0040] It should be noted that the end of the catalytic converter 311 facing away from the main muffler 312 is connected to the exhaust port of a naturally aspirated engine or the exhaust port of a turbocharged engine. Typically, the catalytic converter 311 and the exhaust port are connected by a clamp or flange, with a sealing ring added at the connection to prevent air leakage. The auxiliary muffler 32 is connected to the main muffler 312 via a connecting pipe 33. One end of the connecting pipe 33 is connected to the main muffler 312 via a flange, which is bolted in place. This not only prevents air leakage but also makes disassembly extremely convenient. The other end of the connecting pipe 33 is connected to the auxiliary muffler 32 via welding or a flange.

[0041] It should be noted that the arrangement of the main muffler 312 and the auxiliary muffler 32, as well as the design of the exhaust pipe outlet, must take into account the wading height requirements.

[0042] In a further embodiment of the present invention, the main muffler 312 has a first muffler structure and a second muffler structure. The inlet of the first muffler structure is connected to the end of the catalytic converter 311 that is away from the exhaust port of the engine 1. The outlet of the first muffler structure is connected to the inlet of the auxiliary muffler 32. The outlet of the auxiliary muffler 32 is connected to the inlet of the second muffler structure. An exhaust pipe is connected to the outlet of the second muffler structure.

[0043] Understandably, after the exhaust from engine 1 exits through the exhaust port, it first enters the catalytic converter 311 of the exhaust system 31. After catalytic treatment by the catalytic converter 311, it flows into the first muffler structure. After preliminary muffler treatment by the first muffler structure, it flows to the auxiliary muffler 32, where it further reduces noise. The exhaust, after being treated in the auxiliary muffler 32, flows to the second muffler structure. After final muffler treatment, it is discharged into the atmosphere through the exhaust pipe. Compared to directly discharging into the atmosphere from the auxiliary muffler 32, the exhaust in this application sequentially enters the first muffler structure, the auxiliary muffler 32, and the second muffler structure, which further improves the noise reduction effect.

[0044] It should be noted that the reference appendix... Figure 3 and attached Figure 4 As shown, the main muffler 312 and the auxiliary muffler 32 are connected by a connecting pipe 33. There are two connecting pipes 33, including an inlet pipe 331 and an outlet pipe 332. The inlet pipe 331 connects the outlet of the first muffler structure to the inlet of the auxiliary muffler 32, and the outlet pipe 332 connects the outlet of the auxiliary muffler 32 to the inlet of the second muffler structure.

[0045] Preferably, the second silencing structure may also be equipped with a second catalyst 311, which can perform secondary catalysis before the exhaust gas flows into the atmosphere, further reducing the harmful rate of the exhaust gas and helping to protect the environment.

[0046] In a further embodiment of this utility model, the exhaust pipe is directed downwards and / or to the rear, which can reduce the impact of exhaust on other components of the vehicle chassis and accelerate the exhaust flow rate as much as possible.

[0047] In one specific example, the exhaust pipe is located on the lower surface of the exhaust device 31 and extends backward, or the exhaust pipe is located on the rear surface of the exhaust device 31 and extends backward, the exhaust pipe being located below the engine 1 and spaced apart from the engine 1.

[0048] Preferably, a heat insulation sleeve may be fitted onto the exhaust pipe to reduce heat radiation.

[0049] In a further embodiment of this utility model, reference is made to the appendix. Figure 3 and attached Figure 4 As shown, the main muffler 312 and the auxiliary muffler 32 are connected by a connecting pipe 33. At least part of the connecting pipe 33 is a corrugated pipe. The connecting pipe 33 is a metal steel pipe. The corrugated pipe design can play a role in vibration reduction and noise reduction to a certain extent, thereby optimizing the muffler effect of the exhaust assembly 3 on the exhaust. It can also achieve flexible connection, which facilitates the installation of the connecting pipe 33, prevents the connecting pipe 33 from being damaged due to displacement, and extends the service life of the front compartment exhaust system 100.

[0050] In a further embodiment of this utility model, the main muffler 312 and the auxiliary muffler 32 are connected by a connecting pipe 33. The surface of the connecting pipe 33 is coated with a first heat insulation layer. The first heat insulation layer can reduce the heat radiation from the connecting pipe 33 to the surrounding environment, reduce the overall temperature of the engine compartment, help reduce the load on the cooling system, improve energy efficiency, reduce noise levels, and improve driving comfort.

[0051] In some embodiments of this utility model, the surfaces of the exhaust device 31 and / or the auxiliary muffler 32 are coated with a second heat insulation layer. On the one hand, the second heat insulation layer can reduce the heat radiation from the exhaust device 31 and / or the auxiliary muffler 32 to the surrounding environment, reduce the overall temperature of the engine compartment 1, help reduce the load on the cooling system, improve energy efficiency, reduce noise levels, and enhance driving comfort. On the other hand, it can protect the exhaust device 31 and / or the auxiliary muffler 32 and reduce the heat transfer from the exhaust of the engine 1 and other heat sources.

[0052] Optionally, only the surface of the exhaust device 31 may be coated with the second heat insulation layer, only the surface of the auxiliary muffler 32 may be coated with the second heat insulation layer, or both the surfaces of the exhaust device 31 and the auxiliary muffler 32 may be coated with the second heat insulation layer.

[0053] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 2As shown, the exhaust device 31 is provided with a first bracket 313, which is welded to the outer wall of the exhaust device 31. The first bracket 313 is connected to the engine 1 by fasteners, which can realize the connection and fixation of the exhaust device 31 and the engine 1, reduce the difficulty of connecting the exhaust device 31 and the engine 1, and ensure the reliability and stability of the connection between the exhaust device 31 and the engine 1.

[0054] Furthermore, the exhaust device 31 is provided with first brackets 313 on both walls along the left and right directions, and multiple first brackets 313 are provided on any wall along the left and right directions of the exhaust device 31.

[0055] Further, see attached document. Figure 3 and attached Figure 6 As shown, the auxiliary muffler 32 is provided with a second bracket 321. The second bracket 321 is connected to the front-end module 2 by fasteners, which can fix the auxiliary muffler 32 to the front-end module 2, reduce the connection difficulty between the auxiliary muffler 32 and the front-end module 2, and ensure the reliability and stability of the connection between the auxiliary muffler 32 and the front-end module 2. Optionally, the second bracket 321 can be provided on the upper side, lower side, and side away from the electric fan 23 of the auxiliary muffler 32. There can be one second bracket 321 or multiple brackets spaced apart along the circumferential direction of the auxiliary muffler 32.

[0056] This utility model also proposes a vehicle having the front compartment exhaust system 100 of the above embodiments.

[0057] According to the vehicle of this utility model embodiment, by providing the aforementioned front compartment exhaust system 100, and by simultaneously providing an exhaust device 31 for catalytic muffler and an auxiliary muffler 32 for catalytic muffler silencing, the problem of insufficient muffler volume can be improved, thereby enhancing NVH performance. By placing both the exhaust device 31 and the auxiliary muffler 32 within the front compartment of the vehicle, and utilizing the space within the front module 2 to house the auxiliary muffler 32, the arrangement of the exhaust assembly 3 can be made more compact, saving space, reducing weight, and lowering manufacturing costs. Firstly, the vehicle floor doesn't need to protrude into the passenger compartment to avoid the exhaust pipe, providing a better space experience for passengers, simplifying the vehicle chassis design, and reducing manufacturing difficulty and production costs. Secondly, it avoids the battery pack being affected by the high temperature of the exhaust pipe, ensuring the battery pack can operate normally in good condition, improving battery pack safety performance, and relatively extending battery pack lifespan. Thirdly, the space saved by the exhaust assembly 3 can be used to arrange the battery pack, thereby increasing the battery pack volume and capacity, improving the vehicle's range, and enhancing the user experience.

[0058] The front compartment exhaust system 100 and other components and operations of the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0060] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A front compartment exhaust system, characterized in that, include: Engine (1); Front-end module (2), the front-end module (2) is located on the front side of the engine (1); The exhaust assembly (3) includes an exhaust device (31) and a secondary muffler (32). The exhaust device (31) is located between the engine (1) and the front-end module (2). The exhaust device (31) is connected to the exhaust port of the engine (1) and is used for catalytic muffler of the exhaust. The secondary muffler (32) is embedded in the front-end module (2) and is connected to the exhaust device (31).

2. The front compartment exhaust system according to claim 1, characterized in that, The front-end module (2) includes a bracket (21), a heat sink (22) and an electronic fan (23). The auxiliary muffler (32), the heat sink (22) and the electronic fan (23) are all mounted on the bracket (21). The heat sink (22) and the electronic fan (23) are arranged opposite each other in the front-to-back direction. The auxiliary muffler (32) is located on one side of the heat sink (22) and the electronic fan (23) in the left-to-right direction and is spaced apart.

3. The front compartment exhaust system according to claim 1, characterized in that, The exhaust device (31) includes a catalyst (311) and a main muffler (312), the catalyst (311) and the main muffler (312) are integrated into one unit, the catalyst (311) connects the main muffler (312) to the exhaust port of the engine (1), the main muffler (312) connects to the auxiliary muffler (32), and at least one of the main muffler (312) and the auxiliary muffler (32) is provided with an exhaust pipe.

4. The front compartment exhaust system according to claim 3, characterized in that, The main muffler (312) has a first muffler structure and a second muffler structure. The inlet of the first muffler structure is connected to the end of the catalyst (311) that is away from the exhaust port of the engine (1). The outlet of the first muffler structure is connected to the inlet of the auxiliary muffler (32). The outlet of the auxiliary muffler (32) is connected to the inlet of the second muffler structure. The exhaust pipe is connected to the outlet of the second muffler structure.

5. The front compartment exhaust system according to claim 3, characterized in that, The exhaust pipe is directed downwards and / or backwards.

6. The front compartment exhaust system according to claim 3, characterized in that, The main muffler (312) and the auxiliary muffler (32) are connected by a connecting pipe (33), at least a portion of which is a corrugated pipe.

7. The front compartment exhaust system according to claim 6, characterized in that, The main muffler (312) and the auxiliary muffler (32) are connected by a connecting pipe (33), the surface of which is coated with a first heat insulation layer.

8. The front compartment exhaust system according to claim 1, characterized in that, The surfaces of the exhaust device (31) and / or the auxiliary muffler (32) are coated with a second heat insulation layer.

9. The front compartment exhaust system according to claim 1, characterized in that, The exhaust device (31) is provided with a first bracket (313), which is connected to the engine (1) by fasteners; And / or, the secondary muffler (32) is provided with a second bracket (321), which is connected to the front end module (2) by fasteners.

10. A vehicle, characterized in that, Includes the front compartment exhaust system (100) according to any one of claims 1-9.

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