Automotive muffler components and automobiles

Abstract

This application provides an automotive muffler assembly and an automotive vehicle. The automotive muffler assembly includes: a muffler body, including a housing with a receiving cavity; and a cooling mechanism, including a drive member and a cooling pipe. The cooling pipe is disposed on the housing and contains coolant. The drive member is used to drive the coolant to circulate within the cooling pipe. With this arrangement, the cooling pipe on the housing can absorb heat from the muffler body. During vehicle operation, the rapidly flowing airflow can carry away the heat from the cooling pipe. Furthermore, driven by the drive member, the coolant circulates within the cooling pipe, also absorbing heat from the pipe and rapidly conducting it outwards, thereby improving the heat dissipation effect of the muffler body, facilitating cooling of the muffler body, and improving its noise reduction performance and service life.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to an automotive muffler assembly and an automotive. Background Technology

[0002] In automotive emission systems, the engine produces a loud noise when expelling high-temperature, high-pressure gases after combustion, causing a certain degree of noise pollution. Therefore, mufflers are usually installed in automotive emission systems to reduce the exhaust noise of the car engine.

[0003] Existing automotive mufflers operate at relatively high temperatures, typically around 200°C. Located under the car chassis, they rely solely on air cooling, resulting in ineffective cooling. Furthermore, prolonged operation at these high temperatures not only negatively impacts the muffler's noise reduction performance but also shortens its lifespan. Summary of the Invention

[0004] In view of this, this application provides an automotive muffler assembly and an automotive vehicle, which can improve the cooling effect of the automotive muffler assembly.

[0005] Specifically, the following technical solutions are included:

[0006] In a first aspect, this application provides an automotive muffler assembly, comprising:

[0007] The muffler body includes a housing having a receiving cavity;

[0008] A cooling mechanism includes a drive unit and a cooling pipe, the cooling pipe being disposed on the housing and containing coolant, the drive unit being used to drive the coolant to circulate in the cooling pipe.

[0009] In this embodiment, the cooling pipes installed on the housing can absorb the heat of the muffler body. During vehicle operation, the rapidly flowing air can carry away the heat from the cooling pipes. Furthermore, driven by the drive unit, the coolant circulates in the cooling pipes, which can also absorb the heat from the cooling pipes and quickly conduct it outwards, thereby improving the heat dissipation effect of the muffler body. This helps to cool the muffler body, improve its noise reduction performance and service life.

[0010] In an alternative embodiment, the cooling conduit is bent and covers the housing, extending continuously from one end of the housing to the other.

[0011] By setting the cooling pipes in a bent shape and covering the shell, the length of the cooling pipes is increased, as is the contact area between the shell and the cooling pipes, which is beneficial for quickly transferring the heat of the muffler body to the cooling pipes. The cooling pipes extend continuously from one end to the other along the length of the muffler body, ensuring that all areas of the muffler body along the length can fully transfer heat to the cooling pipes, so that the muffler body can cool down and dissipate heat quickly.

[0012] In an alternative embodiment, the cooling conduit at least wraps around a first side of the housing in its radial direction, the first side being the side of the housing away from the vehicle chassis.

[0013] In this embodiment, by setting a cooling pipe to at least wrap around the first side of the housing in its radial direction, the temperature of the lower surface of the housing can be effectively reduced, while preventing the bottom of the housing from being deformed by foreign objects, thus improving the protective effect of the housing.

[0014] In an optional embodiment, the cooling conduit includes a connecting section and a plurality of fin segments extending circumferentially along the housing and spaced apart along the length of the housing, with adjacent fin segments connected by the connecting section.

[0015] In this embodiment, multiple fin segments are distributed parallel to each other at intervals. The airflow generated when the vehicle is moving can pass through the gaps between the multiple fin segments, accelerating the heat dissipation efficiency of the casing. A connecting section connects any two adjacent fin segments, allowing coolant to flow between the fin segments and the connecting section.

[0016] In an optional embodiment, the muffler body further includes an inspection door, an end cap, a first pipe, and a second pipe;

[0017] The housing has an inspection window that communicates with the receiving cavity, and the inspection door is provided on the housing and is used to open or close the inspection window;

[0018] The end cap covers the opening of the receiving cavity, thereby sealing the receiving cavity;

[0019] The first pipe and the second pipe are respectively connected to the two ends of the shell along its length, and the first pipe and the second pipe are respectively connected to the receiving cavity.

[0020] In this embodiment, when the access door is opened to the outside of the housing, the receiving cavity can communicate with the external environment, which facilitates the cleaning of carbon deposits in the receiving cavity and the replacement of parts in the receiving cavity during vehicle maintenance; when the access door covers the access window, the receiving cavity cannot communicate with the external environment, ensuring the airtightness of the housing.

[0021] In an optional embodiment, the cooling mechanism is detachably connected to the housing, and when the cooling mechanism is connected to the housing, the cooling pipe covers the access door.

[0022] With this configuration, when the cooling mechanism is connected to the housing, the cooling pipes can prevent the access door from being opened, which helps to improve the connection strength between the access door and the housing, ensures that the receiving cavity has a high degree of sealing, and prevents exhaust gas leakage; when it is necessary to open the access door, the cooling mechanism can be removed.

[0023] In an optional embodiment, the automotive muffler assembly further includes a tightening clamp fitted onto the end of the housing for securing the end cap.

[0024] In this embodiment, by setting a tightening clamp, the connection tightness between the end cap and the housing, as well as the sealing performance of the receiving cavity, can be improved.

[0025] In an optional embodiment, the inner edge of the inspection window is provided with sound-absorbing cotton.

[0026] In this embodiment, the sound-absorbing cotton not only ensures the airtightness of the inspection door after it is closed, but also plays a role in buffering and shock absorption, preventing the inspection door from vibrating and causing friction noise, thus helping to improve the noise reduction effect.

[0027] In an optional embodiment, a flexible pad is provided on the side surface of the cooling pipe facing the housing; and / or, a flexible pad is provided on the side surface of the tightening clamp facing the housing.

[0028] In this embodiment, by setting a flexible pad on the surface of the cooling pipe and / or the tightening clamp near the muffler body, not only is a buffering and shock-absorbing effect achieved, but also friction noise is prevented.

[0029] Secondly, this application provides a vehicle that includes the vehicle muffler assembly provided in any embodiment of the first aspect.

[0030] The beneficial effects of the technical solution provided in this application embodiment include at least the following: the cooling pipes installed on the housing can absorb the heat of the muffler body; during vehicle operation, the rapidly flowing airflow can carry away the heat of the cooling pipes; and, driven by the drive component, the coolant circulates in the cooling pipes, which can also absorb the heat of the cooling pipes and quickly conduct it outward, thereby improving the heat dissipation effect of the muffler body, helping to cool the muffler body, and improving the muffler body's noise reduction performance and service life. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an automotive muffler assembly provided in an embodiment of this application;

[0033] Figure 2 An exploded view of an automotive muffler assembly provided in an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the structure of the first side of the automotive muffler assembly provided in an embodiment of this application;

[0035] Figure 4 A cross-sectional view of the muffler body provided in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the cooling pipe structure provided in an embodiment of this application.

[0037] The reference numerals in the figure are respectively:

[0038] 1-Silencer body;

[0039] 11-Shell; 111-Receiving cavity; 111a-First silencing cavity; 111b-Second silencing cavity; 111c-Third silencing cavity; 111d-Resonance silencing cavity; 112-Inspection window; 1121-Sound-absorbing cotton; 12-Inspection door; 13-End cover; 14-First pipe; 141-Silence hole; 15-Second pipe; 16-Third pipe; 17-First partition; 18-Second partition; 19-Third partition;

[0040] 2-Cooling mechanism;

[0041] 21-Drive component; 22-Cooling pipe; 221-Fin segment; 222-Connecting section; 23-Water pipe;

[0042] 3-Tightening clamp;

[0043] 31-Mounting foot; 311-Flanged edge; 312-Threaded hole; 32-Threaded fastener.

[0044] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In the embodiments of this application, directional terms such as "upper," "lower," and "side" are generally used in the following ways: Figure 1 The relative positions shown are based on the given information, and these directional terms are used only to more clearly describe the relationships between structures, not to describe absolute positions. Positions may change when the product is placed in different orientations; for example, "up" and "down" may be interchanged.

[0047] It should be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0048] The terms “comprising” and “including” indicate the presence of the described feature, whole, step, operation, element and / or component, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "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 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art. Some technical terms appearing in the embodiments of this application are described below.

[0051] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0052] In automotive emission systems, the engine produces a loud noise when expelling high-temperature, high-pressure gases after combustion, causing a certain degree of noise pollution. Therefore, mufflers are usually installed in automotive emission systems to reduce the exhaust noise of the car engine.

[0053] Existing automotive mufflers operate at relatively high temperatures, typically around 200°C. Located under the car chassis, they rely solely on air cooling, resulting in ineffective cooling. Furthermore, prolonged operation at these high temperatures not only negatively impacts the muffler's noise reduction performance but also shortens its lifespan.

[0054] To address the aforementioned technical problems, this application provides an automotive muffler assembly and an automotive vehicle.

[0055] like Figures 1 to 5 As shown, the automotive muffler assembly includes a muffler body 1 and a cooling mechanism 2.

[0056] like Figure 2 As shown, the muffler body 1 includes a housing 11, and the housing 11 has a receiving cavity 111.

[0057] The cooling mechanism 2 includes a drive unit 21 and a cooling pipe 22. The cooling pipe 22 is disposed on the housing 11 and contains coolant. The drive unit 21 is used to drive the coolant to circulate in the cooling pipe 22.

[0058] like Figure 2 As shown, the housing 11 is cylindrical. The high-temperature exhaust gas generated by the engine is discharged to the external environment through the receiving cavity 111. The muffler body 1 can reduce the exhaust noise of the engine and allow the high-temperature exhaust gas to be safely and effectively discharged to the external environment.

[0059] The cooling pipe 22 is installed close to the outer surface of the housing 11, and there is a thermally conductive connection between the cooling pipe 22 and the housing 11. The heat of the muffler body 1 can be transferred to the cooling pipe 22 through the housing 11, and the cooling pipe 22 quickly conducts the heat to the external environment. During vehicle operation, the airflow around the muffler assembly flows rapidly, which can quickly carry away the heat from the cooling pipe 22, achieving rapid and effective cooling of the cooling pipe 22 and the muffler body 1.

[0060] The coolant can be water or other types of liquid cooling medium. The drive unit 21 provides power to drive the coolant to circulate in the cooling pipe 22.

[0061] As the coolant circulates in the cooling pipe 22, it absorbs and carries away the heat from the cooling pipe 22, enabling the cooling pipe 22 and the muffler body 1 to cool down and dissipate heat quickly.

[0062] For example, the drive unit 21 is a circulation pump, such as Figure 1 As shown, the cooling mechanism 2 also includes two water pipes 23, which are respectively connected to the input and output ends of the drive unit 21, and each water pipe 23 is connected to the cooling pipe 22. When the drive unit 21 is running, the coolant flows from the water pipe 23 at the output end of the drive unit 21 into the cooling pipe 22, and then flows from the cooling pipe 22 through the water pipe 23 at the input end of the drive unit 21 back into the drive unit 21, completing the circulation of the coolant between the drive unit 21 and the cooling pipe 22.

[0063] The automotive muffler assembly provided in this application embodiment has a cooling pipe 22 disposed on the housing 11 that can absorb the heat of the muffler body 1. During vehicle operation, the rapidly flowing air can carry away the heat of the cooling pipe 22. Furthermore, driven by the drive member 21, the coolant circulates in the cooling pipe 22, which can also absorb the heat of the cooling pipe 22 and quickly conduct it outward, thereby improving the heat dissipation effect of the muffler body 1, helping to cool the muffler body 1, and improving the noise reduction performance and service life of the muffler body 1.

[0064] In a further embodiment, the cooling conduit 22 is bent and covers the housing 11, and the cooling conduit 22 extends continuously from one end of the housing 11 to the other end.

[0065] For example, the cooling pipe 22 extends continuously from one end of the housing 11 along its length in a spiral shape, so that heat can be fully transferred to the cooling pipe 22 in all areas of the muffler body 1 in the circumferential direction. Alternatively, the cooling pipe 22 may be wavy or "S"-shaped and meander continuously from one end of the muffler body 1 along its length.

[0066] By setting the cooling pipe 22 in a bent shape and covering the housing 11, the length of the cooling pipe 22 is increased, and the contact area between the housing 11 and the cooling pipe 22 is increased, which is beneficial to quickly transfer the heat of the muffler body 1 to the cooling pipe 22.

[0067] like Figure 3 As shown, the cooling pipe 22 extends continuously from one end of the muffler body 1 to the other end along the length direction, which can ensure that the heat of the muffler body 1 can be fully transferred to the cooling pipe 22 in each region along the length direction, so that the muffler body 1 can be cooled and dissipated quickly.

[0068] In a further embodiment, the cooling conduit 22 at least wraps around the housing 11 on a first side in its own radial direction, the first side being the side of the housing 11 away from the vehicle chassis.

[0069] Specifically, the automotive muffler assembly is fixed on the vehicle body chassis of the automobile. The housing 11 includes a first side and a second side that are distributed relative to each other along its radial direction, and the second side is the side of the muffler body 1 facing the vehicle body chassis. As Figure 1 shown, the upper side of the housing 11 is the second side, and the lower side of the housing 11 is the first side.

[0070] The cooling pipe 22 can only wrap the first side of the housing 11, or can also wrap both the first side and the second side of the housing 11. Exemplarily, as Figure 1 shown, the cooling pipe 22 covers the lower side of the housing 11, that is, the cooling pipe 22 only wraps the first side.

[0071] In this embodiment, by setting the cooling pipe 22 to at least wrap the first side of the housing 11 in its own radial direction, while effectively reducing the temperature of the lower surface of the housing 11, it can prevent the bottom of the housing 11 from being knocked and deformed by foreign objects, and improve the protection effect on the housing 11.

[0072] In a specific embodiment, as Figure 5 shown, the cooling pipe 22 includes a connecting section 222 and a plurality of fin segments 221. The fin segments 221 extend along the circumferential direction of the housing 11, and the plurality of fin segments 221 are spaced apart along the length direction of the muffler body 1. Two adjacent fin segments 221 are connected by the connecting section 222.

[0073] Each fin segment 221 extends in an arc shape, and the fin segment 221 protrudes outward relative to the outer wall of the housing 11. The plurality of fin segments 221 are spaced apart parallel to each other. The airflow generated when the vehicle is running can pass through the gaps between the plurality of fin segments 221, accelerating the heat dissipation efficiency of the housing 11. A connecting section 222 is connected between any two adjacent fin segments 221, and the coolant can flow in the fin segments 221 and the connecting section 222.

[0074] Exemplarily, the connecting section 222 extends along the length direction of the housing 11. As Figure 5 shown, both ends of each connecting section 222 are respectively connected to the ends of a fin segment 221, making the cooling pipe 22 extend in a "zigzag" shape. This not only increases the contact area between the cooling pipe 22 and the housing 11, but also increases the flow path of the coolant, which is beneficial to quickly and effectively cooling and dissipating heat from the muffler body 1.

[0075] In an embodiment, as Figure 2 shown, the muffler body 1 further includes a maintenance door 12, an end cover 13, a first pipe 14, and a second pipe 15.

[0076] The housing 11 is provided with a maintenance window 112 communicating with the accommodation cavity 111, and the maintenance door 12 is arranged on the housing 11 and is used to open or close the maintenance window 112.

[0077] End caps 13 cover the opening of the receiving cavity 111, thereby sealing the receiving cavity 111. For example, the receiving cavity 111 has openings at both ends along the length of the housing 11, and the muffler body 1 has two end caps 13, each end cap 13 covering one opening of the receiving cavity 111. Exemplarily, the end caps 13 are welded to the housing 11, ensuring a high connection strength between the housing 11 and the end caps 13, while also ensuring the sealing of the receiving cavity 111.

[0078] The first pipe 14 and the second pipe 15 are respectively connected to the two ends of the housing 11 along its length, and the first pipe 14 and the second pipe 15 are respectively connected to the receiving cavity 111. For example, the high-temperature exhaust gas generated by the engine enters the receiving cavity 111 through the first pipe 14 and is discharged to the external environment through the second pipe 15.

[0079] The access door 12 is detachably or rotatably connected to the housing 11, thereby facilitating the opening and closing of the access window 112. For example Figure 2 As shown, one end of the inspection door 12 is rotatably connected to the housing 11. When the inspection door 12 is opened to the outside of the housing 11, the receiving cavity 111 can communicate with the external environment, which is convenient for cleaning the carbon deposits in the receiving cavity 111 and replacing the parts in the receiving cavity 111 during car maintenance. When the inspection door 12 covers the inspection window 112, the receiving cavity 111 cannot communicate with the external environment, thus ensuring the airtightness of the housing 11.

[0080] In one specific embodiment, the silencer body 1 further includes a first partition 17, a second partition 18, a third partition 19, and a third conduit 16. For example... Figure 4 As shown, the first partition 17, the second partition 18 and the third partition 19 are distributed parallel to each other in the receiving cavity 111, dividing the receiving cavity 111 into several silencing cavities. From the end where the first pipe 14 is located to the end where the second pipe 15 is located, they are, in sequence, the first silencing cavity 111a, the second silencing cavity 111b, the third silencing cavity 111c and the resonant silencing cavity 111d.

[0081] like Figure 4 As shown, the first pipe 14 passes through the first partition 17 and the second partition 18 in sequence and extends into the third silencing cavity 111c; the second pipe 15 passes through the third partition 19, the second partition 18 and the first partition 17 in sequence and extends into the first silencing cavity 111a; the third pipe 16 passes through the first partition 17 and the second partition 18, with one end of the third pipe 16 connected to the first silencing cavity 111a and the other end connected to the third silencing cavity 111c.

[0082] The portion of the first pipe 14 located within the first silencing cavity 111a and the second silencing cavity 111b is provided with multiple silencing holes 141. The portion of the second pipe 15 located within the second silencing cavity 111b and the third silencing cavity 111c is provided with multiple silencing holes 141. The portion of the third pipe 16 located within the second silencing cavity 111b is provided with multiple silencing holes 141. The silencing holes 141 are through holes.

[0083] The first pipe 14 is used to pass the gas discharged from the three-way catalytic converter of the car to the second muffler 111b and the third muffler 111c. The third pipe 16 is used to pass the gas in the third muffler 111c to the second muffler 111b and the first muffler 111a. The second pipe 15 is used to discharge the gas in the first muffler 111a to the external environment.

[0084] Specifically, exhaust noise from the car's three-way catalytic converter is introduced into the third muffler chamber 111c through the first pipe. The sound waves are canceled out by frictional reflection between the sound waves and the first and second partitions 17 and 18, thereby reducing the energy of the sound waves. Similarly, the third pipe 16 allows exhaust noise to be introduced into the first muffler chamber 111a for silencing treatment, while the resonant muffler chamber 111d is a Helmholtz chamber, which can adjust and reduce noise at a certain frequency through the resonance of sound wave frequencies.

[0085] In one embodiment, the cooling mechanism 2 is detachably connected to the housing 11, and when the cooling mechanism 2 is connected to the housing 11, the cooling pipe 22 covers the access door 12.

[0086] With this configuration, when the cooling mechanism 2 is connected to the housing 11, the cooling pipe 22 can prevent the access door 12 from being opened, which helps to improve the connection strength between the access door 12 and the housing 11, ensures that the receiving cavity 111 has high sealing performance, and prevents exhaust gas leakage; when it is necessary to open the access door 12, the cooling mechanism 2 can be removed.

[0087] The automotive muffler assembly also includes a tightening clamp 3, which is fitted onto the end of the housing 11 and is used to tighten the end cap 13.

[0088] For example, the number of tightening hoops 3 is the same as the number of end caps 13. For example, if there are two end caps 13, there are also two tightening hoops 3. The two tightening hoops 3 are respectively fitted on both ends of the housing 11 in the length direction, and the tightening hoops 3 are fixed and tightened by threaded fasteners 32 such as bolts.

[0089] In this embodiment, by providing a tightening clamp 3, the connection tightness between the end cap 13 and the housing 11 and the sealing performance of the receiving cavity 111 can be improved.

[0090] Furthermore, the tightening clamp 3 is provided with mounting feet 31, which are used to connect with the vehicle chassis.

[0091] like Figure 1 As shown, each tightening hoop 3 is provided with two mounting feet 31, which are arranged opposite each other along the radial direction of the tightening hoop 3.

[0092] like Figure 1 As shown, each mounting leg 31 has a flange 311 at the end away from the tightening clamp 3. The flange 311 has a threaded hole 312, which facilitates the threaded fastener 32 to pass through the threaded hole 312 and connect with the vehicle chassis.

[0093] In one embodiment, the inner edge of the inspection window 112 is provided with sound-absorbing cotton 1121.

[0094] like Figure 2 As shown, the sound-absorbing cotton 1121 is arranged around the inner edge of the inspection window 112. The sound-absorbing cotton 1121 can not only ensure the sealing of the inspection door 12 after it is closed, but also play a role in buffering and shock absorption, preventing the inspection door 12 from vibrating and causing friction noise, thus helping to improve the noise reduction effect.

[0095] Optionally, a flexible pad is provided on the surface of the cooling pipe 22 facing the housing 11; and / or, a flexible pad is provided on the surface of the tightening clamp 3 facing the housing 11.

[0096] For example, the flexible pad is made of materials such as rubber, silicone, and sponge, and has good elastic deformation capability.

[0097] By setting a flexible pad on the surface of the cooling pipe 22 and / or the tightening clamp 3 near the muffler body 1, not only is the effect of buffering and shock absorption achieved, but also friction noise is prevented.

[0098] This application also provides a vehicle that includes the vehicle muffler assembly provided in any of the above embodiments.

[0099] Specifically, the automobile includes a vehicle body, and the automobile muffler assembly is mounted on the vehicle chassis.

[0100] The automobile provided in this application embodiment has a cooling pipe 22 installed on the housing 11 that can absorb the heat of the muffler body 1. During the vehicle's operation, the rapidly flowing air can carry away the heat from the cooling pipe 22. Furthermore, driven by the drive member 21, the coolant circulates in the cooling pipe 22, which can also absorb the heat from the cooling pipe 22 and quickly conduct it outward, thereby improving the heat dissipation effect of the muffler body 1. This helps to cool the muffler body 1, improve the muffler body 1's noise reduction performance and service life.

[0101] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0102] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0103] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An automotive muffler assembly, characterized in that, The automotive muffler assembly includes: The muffler body (1) includes a housing (11), an inspection door (12), an end cap (13), a first pipe (14), a second pipe (15), a first partition (17), a second partition (18), a third partition (19), and a third pipe (16). The housing (11) has a receiving cavity (111). The housing (11) has an inspection window (112) communicating with the receiving cavity (111). The inspection door (12) is disposed on the housing (11) and is used to open or close the inspection window (112). The end cap (13) covers the opening of the receiving cavity (111). The cavity (111) is closed. The first pipe (14) and the second pipe (15) are respectively connected to the two ends of the shell (11) along its length. The first pipe (14) and the second pipe (15) are respectively connected to the cavity (111). The first partition (17), the second partition (18) and the third partition (19) are distributed parallel to each other in the cavity (111) and divide the cavity (111) into a first anechoic chamber (111a), a second anechoic chamber (111b), a third anechoic chamber (111c) and a resonant anechoic chamber (111d). The first pipe (14) passes through the first partition (17) and the second partition (18) in sequence and extends into the third silencing cavity (111c); the second pipe (15) passes through the third partition (19), the second partition (18) and the first partition (17) in sequence and extends into the first silencing cavity (111a); the third pipe (16) passes through the first partition (17) and the second partition (18), with one end of the third pipe (16) connected to the first silencing cavity (111a) and the other end connected to the third silencing cavity (111c); The first pipe (14) is provided with a plurality of silencing holes (141) in the portion located in the first silencing cavity (111a) and the second silencing cavity (111b), the second pipe (15) is provided with a plurality of silencing holes (141) in the portion located in the second silencing cavity (111b) and the third silencing cavity (111c), and the third pipe (16) is provided with a plurality of silencing holes (141) in the portion located in the second silencing cavity (111b). The silencing holes (141) are through holes. The cooling mechanism (2) includes a drive (21) and a cooling pipe (22), the cooling pipe (22) being disposed on the housing (11), the cooling pipe (22) containing coolant, and the drive (21) being used to drive the coolant to circulate in the cooling pipe (22).

2. The automotive muffler assembly according to claim 1, characterized in that, The cooling pipe (22) is bent and covers the housing (11), and the cooling pipe (22) extends continuously from one end of the housing (11) to the other end.

3. The automotive muffler assembly according to claim 2, characterized in that, The cooling pipe (22) at least wraps around the housing (11) on a first side in its own radial direction, the first side being the side of the housing (11) away from the vehicle chassis.

4. The automotive muffler assembly according to claim 2, characterized in that, The cooling pipe (22) includes a connecting section (222) and a plurality of fin segments (221). The fin segments (221) extend circumferentially along the shell (11), and the plurality of fin segments (221) are spaced apart along the length direction of the shell (11). Two adjacent fin segments (221) are connected by the connecting section (222).

5. The automotive muffler assembly according to claim 1, characterized in that, The cooling mechanism (2) is detachably connected to the housing (11), and when the cooling mechanism (2) is connected to the housing (11), the cooling pipe (22) covers the inspection door (12).

6. The automotive muffler assembly according to claim 1, characterized in that, The automotive muffler assembly also includes a tightening clamp (3), which is fitted onto the end of the housing (11) and is used to tighten the end cap (13).

7. The automotive muffler assembly according to claim 1, characterized in that, The inner edge of the inspection window (112) is provided with sound-absorbing cotton (1121).

8. The automotive muffler assembly according to claim 6, characterized in that, The cooling pipe (22) has a flexible pad on the side surface facing the housing (11); and / or, the tightening clamp (3) has a flexible pad on the side surface facing the housing (11).

9. A car, characterized in that, The vehicle includes the vehicle muffler assembly as described in any one of claims 1 to 8.

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