WO2024146202A1

WO2024146202A1 - Exhaust device and vehicle

Info

Publication number: WO2024146202A1
Application number: PCT/CN2023/124610
Authority: WO
Inventors: 张宁; 张凯; 曾志新; 王本超; 钟广桦; 张剑
Original assignee: 广州汽车集团股份有限公司
Priority date: 2023-01-06
Filing date: 2023-10-13
Publication date: 2024-07-11

Abstract

The present application relates to the field of vehicle exhaust systems, and in particular to an exhaust device and a vehicle. The exhaust device comprises an intake tail pipe, an active exhaust pipe, an inactive exhaust pipe, a silencer, and an exhaust controller, wherein the intake tail pipe is configured for connection to a vehicle engine, the active exhaust pipe is connected to the intake tail pipe, the inactive exhaust pipe is connected to the intake tail pipe, the silencer is connected between the intake tail pipe and the inactive exhaust pipe, and the exhaust controller is configured to switch tail gas of the intake tail pipe to pass through one of the active exhaust pipe and the silencer. When the tail gas is discharged by means of the inactive exhaust pipe, the exhaust does not have a sound wave effect due to silencing being performed by the silencer; and when the tail gas is discharged by means of the active exhaust pipe, the exhaust has a sound wave effect due to silencing not being performed by the silencer. In the present application, exhaust sound waves are controlled by means of the exhaust controller, such that the problem of singular sounds of an exhaust system is solved, and personalized vehicle use requirements of a user are met.

Description

Exhaust system and automobile

This application claims the priority of the Chinese patent application filed with the China Patent Office on January 6, 2023, with application number 202310017510.9 and application name “Exhaust Device and Automobile”, all contents of which are incorporated by reference in this application.

Technical Field

The present application belongs to the field of automobile exhaust systems, and specifically relates to an exhaust device and an automobile.

Background technique

Noise, vibration and harshness are comprehensive issues to measure the quality of automobile manufacturing. They are usually the most direct and superficial feelings for automobile users. At present, the main function of automobile exhaust system is to exhaust and silence through the muffler to meet the user's requirements for driving quietness.

As people's living standards improve, users' requirements for vehicles have changed from a means of transportation to a comfortable family necessity. In addition to requiring the vehicle to be quiet, many users also hope to highlight the unique personality and sports performance of the vehicle, including a certain exhaust sound effect. However, the existing automobile exhaust system and muffler can only reduce noise in a passive way. Therefore, each exhaust system can only have one sound after the structural design is completed, which cannot meet the personalized needs of different users.

Summary of the invention

The purpose of the present application is to provide an exhaust device and a car to solve the problem of single sound of the exhaust system and meet the personalized car use needs of users.

In order to achieve the above object, the present application provides an exhaust device, comprising:

Intake tail pipe, used to connect to the car engine;

A dominant exhaust pipe connected to the intake tail pipe;

A hidden exhaust pipe connected to the intake tail pipe;

a muffler connected between the intake tail pipe and the dominant exhaust pipe;

An exhaust controller is used to switch the exhaust gas of the intake tail pipe to pass through one of the dominant exhaust pipe and the muffler.

Optionally, the exhaust controller includes a sound wave valve, and the sound wave valve is arranged on the explicit exhaust pipe.

Optionally, the exhaust device further includes a connecting shell, the muffler is arranged in the connecting shell, and the intake tail pipe, the explicit exhaust pipe and the implicit exhaust pipe are all connected to the connecting shell.

Optionally, the number of the explicit exhaust pipes is two and they are respectively arranged on the left and right sides of the connecting shell, and the number of the implicit exhaust pipes is two and they are respectively arranged on the left and right sides of the connecting shell.

Optionally, the exhaust device further comprises a pipe end trim cover, the pipe end trim cover comprises an air inlet and an exhaust port, and an end of the dominant exhaust pipe away from the air inlet tail pipe is at least partially inserted into the air inlet.

Optionally, the pipe mouth tail trim cover includes a tail trim cover body and a mounting bracket, the air inlet and the exhaust port are both arranged on the tail trim cover body, the mounting bracket is located on the side of the tail trim cover body away from the explicit exhaust pipe, and the mounting bracket is used to be assembled and connected with the rear bumper.

Optionally, a gap is formed between the inner wall of the air inlet and the outer wall of the explicit exhaust pipe.

Optionally, there are two exhaust ports and the diameter of the air inlet is smaller than the sum of the diameters of the two exhaust ports.

The present application also provides a car, comprising:

An exhaust device as described above;

The engine is connected to the intake tail pipe of the exhaust device.

Optionally, the exhaust device further comprises a pipe mouth tail cover, the pipe mouth tail cover comprises a tail cover body and a mounting bracket, the tail cover body is connected to the dominant exhaust pipe, and the mounting bracket is located on a side of the tail cover body away from the dominant exhaust pipe;

The automobile further comprises a rear bumper, the mounting bracket is connected to the rear bumper by fasteners, and the rear trim cover is The ground clearance of the vehicle body is greater than the ground clearance of the rear bumper.

The exhaust device and the automobile disclosed in the present application have the following beneficial effects:

In this application, the explicit exhaust pipe is directly connected to the intake tail pipe, and the implicit exhaust pipe is indirectly connected to the intake tail pipe through a muffler. The exhaust controller is used to switch the exhaust gas of the intake tail pipe through the explicit exhaust pipe and the muffler. When the exhaust gas is discharged through the implicit exhaust pipe, the exhaust has no sound effect due to the muffler, which can meet the user's requirements for driving quietness; when the exhaust gas is discharged through the explicit exhaust pipe, the exhaust has a sound effect due to the lack of muffler, which can meet the user's personalized car needs. This application controls the exhaust sound through the exhaust controller, solves the problem of the single sound of the exhaust system, and meets the user's personalized car needs.

Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of the structure of an exhaust device in an embodiment of the present application.

FIG. 2 is a schematic diagram of an exhaust device installed on a car in an embodiment of the present application.

FIG. 3 is a schematic side view of the nozzle tail cover in the embodiment of the present application.

FIG. 4 is a rear view schematic diagram of the nozzle tail cover in the embodiment of the present application.

FIG. 5 is a schematic diagram of the rear structure of a vehicle in an embodiment of the present application.

Description of reference numerals:
110, intake tail pipe; 120, explicit exhaust pipe; 130, implicit exhaust pipe; 140, sound wave valve; 150, connecting shell; 160,
Tail cover for the pipe mouth; 161, tail cover body; 162, mounting bracket;
200. Rear bumper.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of example embodiments to those skilled in the art.

In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

FIG. 1 is a schematic diagram of the structure of an exhaust device in an embodiment of the present application, and FIG. 2 is a schematic diagram of an exhaust device installed on a car in an embodiment of the present application. Referring to FIG. 1 and FIG. 2, the exhaust device in the present application includes an intake tail pipe 110, a dominant exhaust pipe 120, a recessive exhaust pipe 130, a muffler, and an exhaust controller. The intake tail pipe 110 is used to connect to the automobile engine and guide the exhaust gas generated by the engine combustion to the exhaust device. The dominant exhaust pipe 120 is connected to the intake tail pipe 110, the recessive exhaust pipe 130 is connected to the intake tail pipe 110, and the muffler is connected between the intake tail pipe 110 and the dominant exhaust pipe 120. In other words, the dominant exhaust pipe 120 is directly connected to the intake tail pipe 110, and the recessive exhaust pipe 130 is indirectly connected to the intake tail pipe 110 through the muffler.

The exhaust controller is used to switch the exhaust gas of the intake tail pipe 110 through one of the dominant exhaust pipe 120 and the muffler. When the exhaust device is working, the exhaust controller controls the exhaust gas to be discharged through one of the following two paths:

Exhaust gas enters through the intake tail pipe 110 and is discharged through the dominant exhaust pipe 120;

The exhaust gas enters the muffler through the intake tail pipe 110 , and is discharged through the invisible exhaust pipe 130 after being silenced by the muffler.

When the exhaust gas is discharged through the invisible exhaust pipe 130, the exhaust has no sound effect because it is silenced by the muffler; when the exhaust gas is discharged through the explicit exhaust pipe 120, the exhaust has a sound effect because it is not silenced by the muffler.

In the present application, the explicit exhaust pipe 120 is directly connected to the intake tail pipe 110, and the implicit exhaust pipe 130 is indirectly connected to the intake tail pipe 110 through a muffler. The exhaust controller is used to switch the exhaust gas of the intake tail pipe 110 through the explicit exhaust pipe 120 and the muffler. When the exhaust gas is discharged through the implicit exhaust pipe 130, the exhaust has no sound effect due to the muffler, which can meet the user's requirements for driving quietness; when the exhaust gas is discharged through the explicit exhaust pipe 120, the exhaust has a sound effect due to the lack of muffler, which can meet the user's personalized car needs. The present application controls the exhaust sound through the exhaust controller, solves the problem of the single sound of the exhaust system, and meets the user's personalized car needs.

For example, referring to FIG. 1 and FIG. 2 , the exhaust controller includes a sound wave valve 140 , and the sound wave valve 140 is disposed on the dominant exhaust pipe 120 .

When the sound valve 140 is opened, since a muffler is provided at the front end of the invisible exhaust pipe 130, the resistance of the exhaust gas passing through the invisible exhaust pipe 130 is large, and the resistance of the exhaust gas passing through the explicit exhaust pipe 120 is small, so the exhaust gas is mainly discharged through the explicit exhaust pipe 120, and the exhaust has a sound effect. When the sound valve 140 is closed, the exhaust gas can only be discharged through the invisible exhaust pipe 130, and since it is silenced by the muffler, the exhaust has no sound effect.

The exhaust controller includes a sound wave valve 140, which is installed on the dominant exhaust pipe 120. The exhaust sound is controlled by the sound wave valve 140, which has a simple structure and can reduce the manufacturing cost of the exhaust device.

It should be noted that the exhaust controller may include a sound wave valve 140, but is not limited thereto, and the exhaust controller may also include a two-position three-way solenoid valve, which may be determined according to the specific situation. Specifically, the two-position three-way solenoid valve has an intake end and two exhaust ends, the intake end of the two-position three-way solenoid valve is connected to the intake tail pipe 110, and the two exhaust ends of the two-position three-way solenoid valve correspond to and are connected to the muffler and the dominant exhaust pipe 120 one by one, so that the muffler and one of the dominant exhaust pipe 120 are connected to the intake tail pipe 110.

As shown in FIG. 1 and FIG. 2 , the exhaust device further includes a connecting shell 150, a muffler is arranged in the connecting shell 150, and an intake tail pipe 110, a dominant exhaust pipe 120, and a recessive exhaust pipe 130 are all connected to the connecting shell 150. The connecting shell 150 has opposite front and rear sides and left and right sides, the intake tail pipe 110 is located at the front side of the connecting shell 150, the dominant exhaust pipe 120 and the recessive exhaust pipe 130 are arranged at the left and right sides of the connecting shell 150, and the dominant exhaust pipe 120 is closer to the intake tail pipe 110 than the recessive exhaust pipe 130. The exhaust device hanging cushion is connected to the lower vehicle body.

The exhaust device includes a connecting shell 150, the intake tail pipe 110, the explicit exhaust pipe 120 and the implicit exhaust pipe 130 are all connected to the connecting shell 150, and the muffler is arranged in the connecting shell 150. The setting of the connecting shell 150 can make it more convenient to connect the pipes and install the exhaust device on the car.

1 and 2 , there are two visible exhaust pipes 120, which are respectively arranged on the left and right sides of the connection housing 150, and there are two invisible exhaust pipes 130, which are respectively arranged on the left and right sides of the connection housing 150. The invisible exhaust pipe 130 extends downward and backward, hidden inside the visible exhaust pipe 120, and the visible exhaust pipe 120 can extend backward to the outside of the rear bumper 200.

There are two visible exhaust pipes 120 and they are respectively arranged on the left and right sides of the connecting shell 150, which is convenient for exhaust appearance design and enables users to recognize the unique appearance of the sound exhaust; there are two invisible exhaust pipes 130 and they are respectively arranged on the left and right sides of the connecting shell 150, which is convenient for exhaust silencer design.

1 and 2, the exhaust device further includes a tail cover 160, which includes an air inlet and an exhaust port, and the end of the dominant exhaust pipe 120 away from the air inlet tail pipe 110 is at least partially inserted into the air inlet. The tail cover 160 is a stamped assembly made of stainless steel, formed by stamping and welding.

When the exhaust device is working, the exhaust controller controls the exhaust gas to be discharged through one of the following two paths:

The exhaust gas enters the dominant exhaust pipe 120 through the intake tail pipe 110 and is discharged through the tail cover 160;

The nozzle tail cover 160 is provided to facilitate the design of the exhaust appearance, so that the user can recognize the unique appearance of the sound wave exhaust.

Fig. 3 is a side view of the pipe nozzle tail cover in the embodiment of the present application, and Fig. 4 is a rear view of the pipe nozzle tail cover in the embodiment of the present application. Referring to Fig. 2 to Fig. 4, the pipe nozzle tail cover 160 includes a tail cover body 161 and a mounting bracket 162, the air inlet and the exhaust port are both arranged on the tail cover body 161, the mounting bracket 162 is located on the side of the tail cover body 161 away from the dominant exhaust pipe 120, and the mounting bracket 162 is used for assembly and connection with the rear bumper 200.

The mounting bracket 162 and the rear bumper 200 can be assembled and connected in a variety of ways, such as welding, riveting, bonding, etc. Connection and fastener connection, etc. In the present application, the mounting bracket 162 and the rear bumper 200 are connected by fasteners to facilitate the removal and installation of the nozzle tail cover 160.

In some exhaust system designs, a mounting hole is provided at the lower edge of the rear bumper 200, and the exhaust pipe is located in the mounting hole at the lower edge of the rear bumper 200. The diameter of the mounting hole is larger than the outer diameter of the exhaust pipe to ensure a larger dynamic avoidance and heat damage avoidance clearance. The exhaust pipe is suspended in the mounting hole at the lower edge of the rear bumper 200, and the exhaust pipe is easily deformed and displaced.

In the present application, the tail cover 160 includes a tail cover body 161 and a mounting bracket 162, and the mounting bracket 162 is assembled and connected to the rear bumper 200. With this design, the tail cover 160 and the rear bumper 200 are relatively fixed in their mounting positions, which can prevent the exhaust pipe from deforming and shifting and affecting the appearance. In addition, the tail cover 160 is fixedly mounted on the rear bumper 200, which is convenient for exhaust appearance design, so that users can recognize the unique appearance of the sound wave exhaust.

As shown in FIG. 2 , a gap is formed between the inner wall of the air inlet and the outer wall of the dominant exhaust pipe 120. The air inlet of the tail cover body 161 may be a circular opening, and the dominant exhaust pipe 120 may be a circular cross-section pipe, and an annular gap is formed between the air inlet of the tail cover body 161 and the outer wall of the dominant exhaust pipe 120. In other words, the tail cover body 161 is hollowly sleeved on the tail end of the dominant exhaust pipe 120.

The exhaust gas enters the dominant exhaust pipe 120 through the intake tail pipe 110, and most of the exhaust gas is discharged through the tail cover 160, and a small part of the exhaust gas overflows forward from the annular gap formed between the air intake of the tail cover body 161 and the outer wall of the dominant exhaust pipe 120;

After the exhaust gas enters the explicit exhaust pipe 120 from the intake tail pipe 110, most of the exhaust gas enters the air intake port of the tail cover body 161 and is discharged through the exhaust port of the tail cover body 161. A small part of the exhaust gas overflows forward from the annular gap formed between the air intake port of the tail cover body 161 and the outer wall of the explicit exhaust pipe 120, thereby increasing the transmission path of the exhaust sound field to the lower vehicle body, and then transmitting it to the passenger compartment, thereby enhancing the sound effect.

As shown in FIGS. 2 to 4 , there are two exhaust ports and the diameter of the air inlet is smaller than the sum of the diameters of the two exhaust ports. The two exhaust ports are located on the side close to the rear bumper 200, and the air inlet is located on the side close to the dominant exhaust pipe 120, forming a "Y"-shaped structure. On the side close to the rear bumper 200, the two exhaust ports are arranged in the vertical direction. In the tail cover body 161, the diameter of the air inlet is smaller than the sum of the diameters of the two exhaust ports.

In the tail cover body 161, the diameter of the air inlet is smaller than the sum of the diameters of the two exhaust ports. With this design, the exhaust gas will have pressure expansion and release after entering the tail cover body 161, thus avoiding the problems of airflow back-inhalation and howling.

The present application also provides a car, which includes an engine and the exhaust device disclosed above, wherein the exhaust device at least includes an intake tail pipe 110, a dominant exhaust pipe 120, a recessive exhaust pipe 130, a muffler and an exhaust controller. The dominant exhaust pipe 120 is connected to the intake tail pipe 110, the recessive exhaust pipe 130 is connected to the intake tail pipe 110, and the muffler is connected between the intake tail pipe 110 and the dominant exhaust pipe 120. In other words, the dominant exhaust pipe 120 is directly connected to the intake tail pipe 110, and the recessive exhaust pipe 130 is indirectly connected to the intake tail pipe 110 through the muffler. The exhaust controller is used to switch the exhaust gas of the intake tail pipe 110 to pass through one of the dominant exhaust pipe 120 and the muffler.

The intake tail pipe 110 is connected to the engine to guide the exhaust gas generated by the engine combustion to the exhaust device. When the exhaust device is working, the exhaust controller controls the exhaust gas to be discharged through one of the following two paths:

In the present application, the automobile includes an exhaust device, in which the explicit exhaust pipe 120 is directly connected to the intake tail pipe 110, and the implicit exhaust pipe 130 is indirectly connected to the intake tail pipe 110 through a muffler. The exhaust controller is used to switch the exhaust gas of the intake tail pipe 110 through the explicit exhaust pipe 120 and the muffler. When the exhaust gas is discharged through the implicit exhaust pipe 130, the exhaust has no sound effect due to the muffler, which can meet the user's requirements for driving quietness; when the exhaust gas is discharged through the explicit exhaust pipe 120, the exhaust has a sound effect due to the lack of muffler, which can meet the user's personalized car use needs. The present application controls the exhaust sound through the exhaust controller, solves the problem of the single sound of the exhaust system, and meets the user's personalized car use needs.

FIG5 is a schematic diagram of the rear structure of a car in an embodiment of the present application. Referring to FIG5 , the exhaust device further includes a tail cover 160, which includes a tail cover body 161 and a mounting bracket 162. The air inlet and the exhaust port are both arranged on the tail cover body 161. The mounting bracket 162 is located on the side of the tail cover body 161 away from the dominant exhaust pipe 120. The mounting bracket 162 is used for assembly and connection with the rear bumper 200. In the present application, the mounting bracket 162 and the rear bumper 200 are connected by fasteners to facilitate the removal and installation of the tail cover 160.

The ground clearance of the rear cover body 161 is greater than the ground clearance of the rear bumper 200. In other words, the height of the rear cover body 161 is greater than the ground clearance of the rear bumper 200. The height is greater than the lower edge of the rear bumper 200. For example, in the vertical direction, the tail cover body 161 can be disposed in the middle of the rear bumper 200, and in the horizontal direction, the two tail cover bodies 161 are respectively located on the left and right sides.

In some exhaust system designs, a mounting hole is provided at the lower edge of the rear bumper 200, and the exhaust pipe or tail cover is located in the mounting hole at the lower edge of the rear bumper 200. In other words, the rear bumper 200 does not completely cover the exhaust pipe or tail cover. When the car is driving on a bumpy road, it is easy to scratch the exhaust pipe or tail cover, causing scratches, damage, or falling off of the exhaust pipe or tail cover.

In the present application, the tail trim cover body 161 is arranged in the middle part of the rear bumper 200 in the up and down direction, and the ground clearance of the tail trim cover body 161 is greater than the ground clearance of the rear bumper 200. With this design, even when the car is driving on a bumpy road, it is not easy to scratch the tail trim cover body 161, which can avoid problems such as scratches, damage, and falling off of the tail trim cover body 161.

The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

An exhaust device, characterized by comprising:

Intake tail pipe, used to connect to the car engine;

A dominant exhaust pipe connected to the intake tail pipe;

A hidden exhaust pipe connected to the intake tail pipe;

a muffler connected between the intake tail pipe and the dominant exhaust pipe;

An exhaust controller is used to switch the exhaust gas of the intake tail pipe to pass through one of the dominant exhaust pipe and the muffler.
The exhaust device according to claim 1 is characterized in that the exhaust controller includes a sound wave valve, and the sound wave valve is arranged on the dominant exhaust pipe.
The exhaust device according to claim 1 is characterized in that the exhaust device also includes a connecting shell, the muffler is arranged in the connecting shell, and the intake tail pipe, the explicit exhaust pipe and the implicit exhaust pipe are all connected to the connecting shell.
The exhaust device according to claim 3 is characterized in that the number of the explicit exhaust pipes is two and they are respectively arranged on the left and right sides of the connecting shell, and the number of the implicit exhaust pipes is two and they are respectively arranged on the left and right sides of the connecting shell.
The exhaust device according to claim 1 is characterized in that the exhaust device further comprises a pipe tail cover, the pipe tail cover comprises an air inlet and an exhaust port, and an end of the dominant exhaust pipe away from the air inlet tail pipe is at least partially inserted into the air inlet.
The exhaust device according to claim 5 is characterized in that the pipe mouth tail trim cover includes a tail trim cover body and a mounting bracket, the air inlet and the exhaust port are both arranged on the tail trim cover body, the mounting bracket is located on the side of the tail trim cover body away from the explicit exhaust pipe, and the mounting bracket is used for assembly and connection with the rear bumper.
The exhaust device according to claim 6 is characterized in that a gap is formed between the inner wall of the air inlet and the outer wall of the dominant exhaust pipe.
The exhaust device according to claim 6 is characterized in that there are two exhaust ports and the diameter of the air inlet is smaller than the sum of the diameters of the two exhaust ports.
A car, characterized by comprising:

The exhaust device according to any one of claims 1 to 8;

The engine is connected to the intake tail pipe of the exhaust device.
The automobile according to claim 9, characterized in that the exhaust device further comprises a pipe mouth tail cover, the pipe mouth tail cover comprises a tail cover body and a mounting bracket, the tail cover body is connected to the dominant exhaust pipe, and the mounting bracket is located on a side of the tail cover body away from the dominant exhaust pipe;

The automobile further comprises a rear bumper, the mounting bracket is assembled and connected to the rear bumper via fasteners, and the ground clearance of the tail cover body is greater than the ground clearance of the rear bumper.