Flow guide apparatus, muffler system, and vehicle

Abstract

The present disclosure relates to a flow guide apparatus, a muffler system, and a vehicle, the flow guide apparatus comprising a flow guide panel main body, the flow guide panel main body being arranged on a bottom face of a tail muffler of a vehicle, and, in a direction from the head to the tail of the vehicle, the flow guide panel main body being arranged to be located on the side of a rear bumper of the vehicle which is close to the vehicle head. In the direction from the head to the tail of the vehicle, the face of the flow guide panel main body facing away from at least the tail muffler is formed as a flow guide face obliquely arranged in a direction away from the tail muffler, and the end of the flow guide face close to the rear bumper is lower than a bottom face of the rear bumper, such that the airflow discharged through the tail muffler can flow along the flow guide face so as to be guided downward. Thus, the airflow can be prevented to a certain extent from directly flowing backward and then flowing onto the rear bumper located behind the tail muffler hence generating turbulence, which can effectively reduce the air resistance and improve the economy of the vehicle.

Description

Diversion device, silencer system and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 4, 2023, with application number 202311648464.9 and titled “Diversion device, silencer system and vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present disclosure relates to the field of vehicle technology, and in particular to a flow guide device, a silencer system, and a vehicle. Background Art

[0004] With energy issues becoming increasingly severe, improving vehicle economy (fuel consumption and range) has become a key concern for OEMs both domestically and internationally. Wind resistance plays a crucial role in vehicle economy. For example, reducing wind resistance significantly reduces fuel consumption at high speeds for gasoline-powered vehicles; for electric vehicles, reducing wind resistance can also increase their range. Therefore, reducing a vehicle's drag coefficient has become a key focus and research topic for major OEMs.

[0005] However, there is usually a gap between the rear muffler and the rear bumper of a car. The airflow discharged through the rear muffler will flow disorderly along the gap, causing severe turbulence, which in turn increases wind resistance and affects the economy of the car. Summary of the Invention

[0006] In order to solve the above technical problems, the present disclosure provides a flow guide device, a silencer system and a vehicle.

[0007] In a first aspect, the present disclosure provides a flow guide device, comprising a flow guide plate body;

[0008] The deflector body is used to be arranged on the bottom surface of the rear muffler of the vehicle, and the deflector body is located on a side of the rear bumper of the vehicle close to the front of the vehicle;

[0009] At least one side of the deflector body facing away from the rear muffler forms a deflector surface. In the direction from the front to the rear of the vehicle, the deflector surface is inclined toward a direction away from the rear muffler, and an end of the deflector surface close to the rear bumper is lower than the bottom surface of the rear bumper.

[0010] In some embodiments, along the direction from the front to the rear of the vehicle, the deflector body includes a first deflector and a second deflector connected in sequence;

[0011] In the direction from the front to the rear of the vehicle, the first deflector is tilted toward the direction close to the rear muffler;

[0012] The thickness of the second deflector gradually increases in a direction from the front to the rear of the vehicle, and a surface of the second deflector facing away from the rear muffler forms the deflector surface.

[0013] In some embodiments, the angle between the guide surface and the horizontal plane is not less than 10°.

[0014] In some embodiments, in the direction from the front to the rear of the vehicle, the length of the deflector body is not less than 90 mm, and there is a preset gap between the deflector body and the rear bumper.

[0015] In some embodiments, at least two reinforcement structures are provided on the deflector body, and at least two of the reinforcement structures are spaced apart along the width direction of the vehicle.

[0016] In some embodiments, the reinforcement structure includes a reinforcement rib, the reinforcement rib is located on a side of the deflector body away from the tail muffler, and the reinforcement rib extends from the deflector body to the rear bumper;

[0017] And / or, the reinforcement structure includes a reinforcement protrusion structure, and a portion of the deflector body protrudes toward a direction close to the tail muffler to form the reinforcement protrusion structure.

[0018] In some embodiments, the bottom surface of the tail muffler is a curved structure, the curved structure protrudes toward the direction close to the deflector body, and the end of the deflector body away from the rear bumper is attached to the lowest point of the curved structure.

[0019] In some embodiments, the guide device further includes a bending structure, which is located on a side of the guide plate body facing away from the tail muffler, and the bending structure and / or the guide plate body are connected to the tail muffler.

[0020] In some embodiments, the bending structure includes at least a first bending section and a second bending section, one end of the first bending section is connected to an end of the deflector body close to the rear bumper, and the first bending section is bent relative to the deflector body, one end of the second bending section is connected to the other end of the first bending section, and the second bending section is bent and extended relative to the first bending section in a direction away from the deflector body;

[0021] The second bending section and / or the guide plate body are connected to the tail muffler.

[0022] In some embodiments, a weight-reducing structure is provided on the first bending segment and / or the second bending segment;

[0023] And / or, the first bending section, the second bending section and the guide plate body are an integrally formed structure.

[0024] In a second aspect, the present disclosure provides a muffler system, including a tail muffler and a flow guide device.

[0025] In a third aspect, the present disclosure provides a vehicle comprising a flow-guiding device or a silencer system.

[0026] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0027] The present disclosure provides a deflector device, a muffler system, and a vehicle. The deflector device includes a deflector body, the deflector body being disposed on the bottom surface of a rear muffler of the vehicle, and the deflector body being disposed on a side of a rear bumper of the vehicle near the front of the vehicle in a direction from the front to the rear of the vehicle. At least one side of the deflector body facing away from the rear muffler forms a deflector surface. The deflector surface is inclined away from the rear muffler in the direction from the front to the rear of the vehicle, and an end of the deflector surface near the rear bumper is lower than the bottom surface of the rear bumper. This allows airflow discharged from the rear muffler to flow along the deflector surface, thereby directing the airflow downward, preventing the airflow discharged from the rear muffler from flowing disorderly in the gap between the rear muffler and the rear bumper, thereby preventing the airflow from flowing directly rearward and then impacting the rear bumper behind the rear muffler, thereby effectively reducing wind resistance and improving vehicle economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0029] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] FIG1 is a structural schematic diagram of a flow guiding device according to an embodiment of the present disclosure;

[0031] FIG2 is a second structural diagram of the flow guide device according to an embodiment of the present disclosure.

[0032] Reference numerals:

[0033] 1. Guide plate body; 11. Guide surface; 12. Reinforcement structure; 121. Reinforcement ribs; 122. Reinforcement protrusion structure; 13. First guide plate; 14. Second guide plate; 2. Bending structure; 21. First bending section; 22. Second bending section; 23. Weight reduction structure. Specific embodiments

[0034] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0036] Example 1

[0037] 1 and 2 , this embodiment provides a flow guide device, including a flow guide plate body 1 .

[0038] The deflector body 1 is used to be arranged on the bottom surface of the rear muffler of the vehicle, and in the direction from the front to the rear of the vehicle, the deflector body 1 is located on the side of the rear bumper of the vehicle close to the front of the vehicle.

[0039] At least one side of the deflector body 1 facing away from the rear muffler forms a deflector surface 11. In the direction from the front to the rear of the vehicle, the deflector surface 11 is inclined toward the direction away from the rear muffler, and the end of the deflector surface 11 close to the rear bumper is lower than the bottom surface of the rear bumper.

[0040] In a specific implementation, the deflector body 1 can be fitted onto the bottom surface of the rear muffler, and the deflector body 1 and the rear muffler can be welded or screwed together. In the direction from the front to the rear of the vehicle, the deflector body 1 is located on the side of the rear bumper of the vehicle close to the front, that is, in front of the rear bumper, to guide the airflow and prevent the airflow from flowing upward along the tangent of the lower surface of the rear muffler due to the curved outer contour of the rear muffler after it is discharged, and then impacting the rear bumper, causing turbulence.

[0041] Specifically, in the direction from the front to the rear of the vehicle, at least one side of the deflector body 1 that is away from the tail muffler is a deflector surface 11 that is inclined in the direction away from the tail muffler, that is, in the direction from the front to the rear of the vehicle, the deflector surface 11 is a downwardly inclined slope, so that the airflow discharged through the tail muffler can flow along the downwardly inclined deflector surface 11 to guide the airflow downward (the flow path of the airflow is shown by the dotted arrow in Figure 1), avoiding the airflow discharged through the tail muffler from flowing disorderly in the gap between the tail muffler and the rear bumper to cause turbulence, and because the end of the deflector surface 11 close to the rear bumper is lower than the bottom surface of the rear bumper, it can avoid the airflow flowing directly to the rear and then impacting the rear bumper behind the rear muffler to cause turbulence to a certain extent, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0042] Tests have shown that by setting up this diversion device to guide the gas discharged from the tail muffler, the wind resistance of the entire vehicle can be effectively reduced by 0.002 and the cruising range can be increased by 0.5 km.

[0043] For example, since the deflector body 1 is used to guide the tail muffler, it is subject to the high temperature environment when the tail muffler is working, and the deflector body 1 needs to be made of high-temperature resistant materials, such as metal materials, such as copper or iron.

[0044] The deflector device of this embodiment includes a deflector body 1 disposed on the bottom surface of a vehicle's rear muffler and, in a direction from the front to the rear of the vehicle, on a side of the rear bumper near the front of the vehicle. In the direction from the front to the rear of the vehicle, at least one side of the deflector body 1 facing away from the rear muffler is inclined toward the rear muffler, thereby allowing airflow discharged from the rear muffler to flow along the deflector surface 11, thereby directing the airflow downward and preventing the airflow from flowing disorderly in the gap between the rear muffler and the rear bumper, thereby causing turbulence. Furthermore, the end of the deflector surface 11 near the rear bumper is lower than the bottom surface of the rear bumper, thereby preventing the airflow from flowing directly backward and then impacting the rear bumper behind the rear muffler, thereby causing turbulence. This effectively reduces wind resistance and improves vehicle efficiency.

[0045] 1 , in some embodiments, along the direction from the front to the rear of the vehicle, the deflector body 1 includes a first deflector 13 and a second deflector 14 that are sequentially connected.

[0046] The first deflector 13 is tilted toward the rear muffler from the front of the vehicle to the rear of the vehicle. The second deflector 14 gradually increases in thickness from the front of the vehicle to the rear of the vehicle, and the side of the second deflector 14 facing away from the rear muffler forms a deflecting surface 11 tilted toward the rear muffler.

[0047] That is, in order to guide the gas discharged from the tail muffler downward, it is necessary to provide a guide surface 11 on the side of the second guide plate 14 facing away from the tail muffler, which is inclined in the direction away from the tail muffler. To this end, only the side of the second guide plate 14 facing away from the tail muffler can be provided with a guide surface 11 inclined in the direction away from the tail muffler, that is, only the side of the second guide plate 14 close to the tail muffler is an inclined surface, and the second guide plate 14 itself does not need to be an inclined second guide plate 14. In this case, the thickness of the second guide plate 14 gradually increases from the front to the rear of the vehicle. Alternatively, the second guide plate 14 can be provided as an inclined plate that is inclined in the direction away from the tail muffler. In this case, the side of the second guide plate 14 facing away from the tail muffler also has a guide surface 11 inclined in the direction away from the tail muffler.

[0048] In addition, the first deflector 13 connected to the side of the second deflector 14 away from the rear bumper can be tilted toward the direction close to the rear muffler, that is, in the direction from the front to the rear of the vehicle, the first deflector 13 is tilted upward to enhance the structural strength of the entire deflector body 1.

[0049] As shown in Figure 1 , in some embodiments, the angle between the plane of the guide surface 11 and the horizontal plane is no less than 10°. By properly setting the angle between the plane of the guide surface 11 and the horizontal plane, the airflow discharged from the tail muffler can flow along the guide surface 11, thereby directing the airflow downward. This can, to a certain extent, prevent the airflow from flowing directly backward and then onto the rear bumper behind the tail muffler, causing turbulence. This can effectively reduce wind resistance and improve the vehicle's economic efficiency.

[0050] For example, the angle between the plane where the guide surface 11 is located and the horizontal plane may be 10°, or 11° or 12°.

[0051] As shown in Figure 1, in some embodiments, the deflector body 1 is no less than 90 mm long from the front to the rear of the vehicle and has a predetermined clearance from the rear bumper. By properly sizing the deflector body 1 from the front to the rear of the vehicle, it is possible to avoid problems such as the deflector body 1 being too long, causing it to abut against the rear bumper and potentially damaging it after heat from the rear muffler is transferred to it through the deflector body 1. It also avoids problems such as the deflector body 1 being too short, resulting in poor airflow guidance.

[0052] For example, in the direction from the front to the rear of the vehicle, the length of the deflector body 1 may be 90 mm, or 91 mm, or 92 mm.

[0053] 1 and 2 , in some embodiments, at least two reinforcement structures 12 are provided on the deflector body 1 , and the at least two reinforcement structures 12 are spaced apart along the width direction of the vehicle, thereby effectively improving the structural strength of the entire deflector device and thereby increasing its service life.

[0054] 1 and 2 , in some embodiments, the reinforcement structure 12 includes a reinforcement rib 121, which is located on a side of the guide plate body 1 close to the tail muffler or on a side of the guide plate body 1 away from the tail muffler, thereby improving the structural strength of the entire guide device through the reinforcement rib 121.

[0055] For example, the reinforcing ribs 121 can extend from the front to the rear of the vehicle, and the reinforcing ribs 121 can extend from the deflector body 1 to the rear bumper, so that the overall extension direction of the reinforcing ribs 121 is consistent with the flow direction of the airflow, thereby ensuring smooth airflow without the problem of the reinforcing ribs 121 extending perpendicular to the flow direction or at a certain angle to the flow direction, which would block the smooth flow of the airflow. In addition, multiple reinforcing ribs 121 can be provided, and multiple reinforcing ribs 121 can be arranged at intervals along the width of the vehicle, thereby further effectively improving the structural strength of the entire deflector device.

[0056] For example, the reinforcing ribs 121 can be integrally formed with the deflector body 1 to save manufacturing steps and improve the structural strength of the entire deflector body 1. Alternatively, the reinforcing ribs 121 can be separately formed from the deflector body 1 and then welded together.

[0057] 1 and 2 , in some embodiments, the reinforcement structure 12 includes a reinforcement protrusion structure 122 , and a portion of the deflector body 1 protrudes toward the direction close to the tail muffler to form the reinforcement protrusion structure 122 , thereby improving the structural strength of the entire deflector device through the reinforcement protrusion structure 122 .

[0058] For example, the reinforcement protrusion structure 122 can be provided in plurality, and the plurality of reinforcement protrusion structures 122 can be arranged at intervals along the width direction of the vehicle, so that the structural strength of the entire guide device can be further effectively improved by the plurality of reinforcement protrusion structures 122 .

[0059] In addition, in this embodiment, reinforcing ribs 121 can be set only on the guide plate body 1, or reinforcing protrusion structures 122 can be set only on the guide plate body 1, or reinforcing ribs 121 and reinforcing protrusion structures 122 can be set on the guide plate body 1 at the same time to more effectively improve the structural strength of the entire guide device.

[0060] In some embodiments, the bottom surface of the tail muffler is a curved structure that bulges toward the deflector body 1 , and the end of the deflector body 1 away from the rear bumper is in contact with the lowest point of the curved structure.

[0061] In specific implementation, the bottom surface of the tail muffler is a downwardly convex curved structure. By fitting the end of the deflector body 1 away from the rear bumper to the lowest point of the curved structure, it is more conducive to allowing the gas discharged through the tail muffler to flow smoothly along the guide surface 11 of the deflector body 1, so that the airflow flows downward under the guiding action of the guide surface 11 of the deflector body 1, avoiding the disorderly flow of the airflow discharged through the tail muffler in the gap between the tail muffler and the rear bumper and causing turbulence, thereby effectively reducing wind resistance and improving the economy of the vehicle.

[0062] 1 and 2 , in some embodiments, the deflector further comprises a bent structure 2 located on a side of the deflector body 1 facing away from the tail muffler, wherein the bent structure 2 and / or the deflector body 1 are connected to the tail muffler. The provision of the bent structure 2 can further enhance the structural strength of the entire deflector.

[0063] For example, when both the bent structure 2 and the deflector body 1 are connected to the tail muffler, the connection strength and reliability of the deflector device and the tail muffler are further improved. Alternatively, only the bent structure 2 can be connected to the tail muffler, or only the deflector body 1 can be connected to the tail muffler.

[0064] 1 and 2 , in some embodiments, the bending structure 2 includes at least a first bending section 21 and a second bending section 22, one end of the first bending section 21 is connected to an end of the deflector body 1 close to the rear bumper and is bent relative to the deflector body 1, one end of the second bending section 22 is connected to the other end of the first bending section 21, and the second bending section 22 is bent relative to the first bending section 21.

[0065] The second bending section 22 and / or the deflector body 1 are connected to the tail muffler.

[0066] For example, when both the second bent section 22 and the deflector body 1 are connected to the tail muffler, the connection strength and reliability of the deflector device and the tail muffler are further improved. Alternatively, only the second bent section 22 may be connected to the tail muffler, or only the deflector body 1 may be connected to the tail muffler.

[0067] As shown in FIG2 , in some embodiments, a weight-reducing structure 23 is provided on the first curved segment 21 and / or the second curved segment 22, thereby achieving a lightweight design for the entire flow guide device. For example, the weight-reducing structure 23 may be provided only on the first curved segment 21, only on the second curved segment 22, or both, to further reduce the weight of the entire flow guide device while ensuring sufficient structural strength.

[0068] For example, the weight-reducing structure 23 may be a through-hole weight-reducing groove, a plurality of weight-reducing grooves may be provided, and the plurality of weight-reducing grooves may be spaced apart along the width direction of the vehicle. Alternatively, the weight-reducing structure 23 may be a non-through-hole.

[0069] In some embodiments, the first bending section 21 and the second bending section 22 may be integrally formed to save manufacturing steps and improve the structural strength of the entire bending structure 2 .

[0070] In some embodiments, the bending structure 2 and the guide plate body 1 can be integrally formed to save manufacturing steps and improve the structural strength of the entire guide device.

[0071] Example 2

[0072] 1 and 2 , this embodiment further provides a muffler system, including a tail muffler and a flow guide device.

[0073] The muffler system of this embodiment is provided with a deflector body 1 on the bottom surface of the rear muffler, and the deflector body 1 is provided on the side of the rear bumper of the vehicle near the front of the vehicle in the direction from the front to the rear of the vehicle. In the direction from the front to the rear of the vehicle, a deflector surface 11 is provided on the side of the deflector body 1 facing away from the rear muffler, so that the airflow discharged from the rear muffler can flow along the deflector surface 11, thereby guiding the airflow downward and preventing the airflow discharged from the rear muffler from flowing disorderly in the gap between the rear muffler and the rear bumper, thereby causing turbulence. In addition, the end of the deflector surface 11 near the rear bumper is lower than the rear bumper, which can, to a certain extent, prevent the airflow from flowing directly backward and then impacting the rear bumper behind the rear muffler, thereby causing turbulence. This can effectively reduce wind resistance and improve the economic efficiency of the vehicle.

[0074] The specific structure and implementation principle of the guide device in this embodiment are the same as the structure of the guide device provided in Example 1, and can bring the same or similar technical effects. They will not be described here one by one, and the details can be referred to the description of Example 1.

[0075] Example 3

[0076] 1 and 2 , this embodiment further provides a vehicle including a flow guide device or a silencer system.

[0077] The vehicle of this embodiment has a deflector body 1 disposed on the bottom surface of the rear muffler, and the deflector body 1 is disposed on a side of the rear bumper near the front of the vehicle in the direction from the front to the rear of the vehicle. In the direction from the front to the rear of the vehicle, a deflector surface 11 is provided on a side of the deflector body 1 facing away from the rear muffler, so that the airflow discharged from the rear muffler flows along the deflector surface 11, thereby directing the airflow downward and preventing the airflow discharged from the rear muffler from flowing disorderly in the gap between the rear muffler and the rear bumper, thereby causing turbulence. Furthermore, the end of the deflector surface 11 near the rear bumper is lower than the rear bumper, thereby preventing the airflow from flowing directly backward and then impacting the rear bumper behind the rear muffler, thereby causing turbulence. This effectively reduces wind resistance and improves the vehicle's economic efficiency.

[0078] The specific structure and implementation principle of the guide device in this embodiment are the same as the structure of the guide device provided in Example 1, and can bring the same or similar technical effects. They will not be described here one by one, and the details can be referred to the description of Example 1.

[0079] The specific structure and implementation principle of the silencer system in this embodiment are the same as those of the silencer system provided in Example 2, and can bring the same or similar technical effects. They will not be described in detail here, and please refer to the description of Example 2 for details.

[0080] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0081] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A flow guide device, comprising a flow guide plate body; The deflector body is used to be arranged on the bottom surface of the rear muffler of the vehicle, and the deflector body is located on a side of the rear bumper of the vehicle close to the front of the vehicle; At least one side of the deflector body facing away from the rear muffler forms a deflector surface. In the direction from the front to the rear of the vehicle, the deflector surface is inclined toward a direction away from the rear muffler, and an end of the deflector surface close to the rear bumper is lower than the bottom surface of the rear bumper.

2. The flow guiding device according to claim 1, wherein: Along the direction from the front to the rear of the vehicle, the deflector body includes a first deflector and a second deflector connected in sequence; In the direction from the front to the rear of the vehicle, the first deflector is tilted toward the direction close to the rear muffler; In the direction from the front to the rear of the vehicle, the thickness of the second deflector gradually increases, and a side of the second deflector facing away from the rear muffler forms the deflector surface.

3. The flow guiding device according to claim 2, wherein: The angle between the guide surface and the horizontal plane is not less than 10°.

4. The flow guiding device according to claim 1, wherein: In the direction from the front to the rear of the vehicle, the length of the deflector body is not less than 90 mm, and there is a preset gap between the deflector body and the rear bumper.

5. The flow guiding device according to claim 1, wherein: At least two reinforcement structures are arranged on the deflector body, and the at least two reinforcement structures are arranged at intervals along the width direction of the vehicle.

6. The flow guiding device according to claim 5, wherein: The reinforcement structure includes a reinforcement rib, the reinforcement rib is located on a side of the deflector body away from the tail muffler, and the reinforcement rib extends from the deflector body to the rear bumper; And / or, the reinforcement structure includes a reinforcement protrusion structure, and a portion of the guide plate body protrudes toward a direction close to the tail muffler to form the reinforcement protrusion structure.

7. The flow guiding device according to claim 1, wherein: The bottom surface of the tail muffler is a curved structure, the curved structure protrudes toward the direction close to the deflector body, and one end of the deflector body away from the rear bumper is attached to the lowest point of the curved structure.

8. The flow guiding device according to any one of claims 1 to 7, wherein: The guide device further comprises a bending structure, wherein the bending structure is located on a side of the guide plate body away from the tail muffler, and the bending structure and / or the guide plate body are connected to the tail muffler.

9. The flow guiding device according to claim 8, wherein: The bending structure at least includes a first bending section and a second bending section, one end of the first bending section is connected to one end of the deflector body close to the rear bumper, and the first bending section is bent relative to the deflector body, one end of the second bending section is connected to the other end of the first bending section, and the second bending section is bent and extended relative to the first bending section in a direction away from the deflector body; The second bending section and / or the guide plate body are connected to the tail muffler.

10. The flow guiding device according to claim 9, wherein: A weight-reducing structure is provided on the first bending section and / or the second bending section; And / or, the first bending section, the second bending section and the guide plate body are an integrally formed structure.

11. A muffler system, comprising a tail muffler and a flow guiding device according to any one of claims 1 to 10.

12. A vehicle, comprising the flow guiding device according to any one of claims 1 to 10 or comprising the sound attenuation system according to claim 11.

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