Motorcycle silencer and motorcycle
By setting a streamlined spoiler and Z-shaped structure in the collection cavity of the motorcycle muffler, the problem of airflow disorder at the intersection of the exhaust pipes of the multi-cylinder engine is solved, and smoother exhaust and higher engine performance are achieved.
Patent Information
- Application Number
- CN202421116110.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-22
AI Technical Summary
Multi-cylinder engines cause airflow to be disordered at the junction of exhaust pipes, affecting the smooth exhaust, and thus affecting engine performance and motorcycle exhaust sound.
A streamlined spoiler is installed in the collection cavity of the motorcycle muffler. The spoiler is similar to the center line of the collection cavity, separating the airflow and reducing the airflow flow resistance. Combining the Z-shaped structure and gap design, it improves exhaust smoothness and fixation stability.
It improves the smoothness of engine exhaust emissions, reduces exhaust back pressure, improves motorcycle exhaust sound, avoids abnormal noises, and improves engine performance.
Smart Images
Figure CN222333886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of motorcycles and accessories thereof, in particular to a motorcycle muffler and a motorcycle. Background Art
[0002] At present, the demand for large-displacement motorcycles is increasing, and multi-cylinder engines are indispensable devices. At the same time, large-displacement motorcycles are set up with compact structures and complex layout relationships, which makes the muffler exhaust pipe have a large curvature and a short length. At the intersection of multiple exhaust pipes, the shape is even more irregular.
[0003] Because it is a multi-cylinder engine, multiple exhaust pipes are used to connect to the engine exhaust port, and a collection chamber is set before the exhaust pipe is connected to the muffler body. Since not every cylinder of a multi-cylinder engine exhausts at the same time, the airflow in the collection chamber is turbulent, which affects the exhaust process and even causes the airflow in the collection chamber to hinder the exhaust of the exhaust pipe, affecting the engine exhaust and thus affecting the engine performance. Although there is a patent to improve the structure, a partition is set according to the exhaust order of the engine cylinders, but it is far from meeting the current design needs.
[0004] Therefore, it is urgent to develop a motorcycle muffler to prevent exhaust gas from affecting the performance of the engine. Summary of the invention
[0005] In view of this, the purpose of the utility model is to provide a motorcycle muffler, which achieves smooth exhaust by setting a structure, does not cause exhaust airflow turbulence, affects exhaust, helps to improve engine performance and optimize the exhaust sound of the motorcycle.
[0006] A motorcycle muffler includes a muffler body and an exhaust pipe connected to the muffler body, the exhaust pipe is connected to the engine exhaust port, and there are multiple exhaust pipes. A collection chamber is provided at the connection point of the multiple exhaust pipes to the muffler body, and a spoiler is provided in the collection chamber and in the middle of the collection chamber along the airflow direction. The spoiler is streamlined and has a direction similar to the center line of the collection chamber. By providing a spoiler and having a direction similar to the center line of the collection chamber, the exhaust pipe is divided into two parts by the spoiler after being collected in the collection chamber, which has a better guiding effect on the airflow, reduces the airflow flow resistance, and further improves the exhaust smoothness, thereby making the engine exhaust gas discharge smoother, avoiding the influence of excessive exhaust back pressure of the exhaust pipe, and improving the engine performance. Since the airflow inside the collection chamber is smooth, the exhaust sound of the motorcycle is improved and the occurrence of abnormal exhaust noise is avoided.
[0007] Further: the cross section of the spoiler is Z-shaped, the upper end of the spoiler is welded and fixed to the top of the collection cavity, and the lower end is welded and fixed to the bottom of the collection cavity. By setting the Z-shaped structure, the spoiler can be more conveniently fixed, so that the stability of the fixed structure is good to ensure the strength of the spoiler and increase the strength of the collection cavity. At the same time, it plays a supporting and connecting role, which is a supplement to the welding of the upper and lower parts of the collection cavity.
[0008] Further: There is a gap between the end of the spoiler close to the exhaust pipe and the tail of the exhaust pipe. The purpose of designing the gap is to retain the part that affects the airflow and remove the redundant part to achieve the purpose of lightweight design.
[0009] Further: There is a gap between the spoiler and the muffler body at one end close to the muffler body. The purpose of designing the gap is to retain the part that affects the airflow and remove the redundant part to achieve the purpose of lightweight design.
[0010] Further: the upper and lower ends of the spoiler are conformably welded to the upper and lower walls of the collecting cavity. The shape of the structure precisely fits the inner surface of the exhaust pipe pipe, which increases the strength of the spoiler structure and facilitates its overlap with the upper and lower parts of the exhaust pipe pipe, increases the welding strength, and facilitates the spoiler to resist the impact of airflow.
[0011] The utility model also provides a motorcycle, the motorcycle comprises an engine installed on the motorcycle, the engine exhaust port is connected to a muffler, and the muffler is the motorcycle muffler described above.
[0012] Beneficial effects of the utility model: The motorcycle muffler of the utility model can play a guiding role by arranging a flow deflector in the converging cavity of multiple exhaust pipes, slowing down the airflow dispersion time, reducing the airflow dispersion too fast, reducing the mutual influence of exhaust on both sides of the spoiler, reducing the influence of the last exhaust residue on the next exhaust, making the engine exhaust emission smoother, avoiding the influence of excessive exhaust back pressure of the exhaust pipe, and improving the engine performance. It is also because of the smooth airflow inside the muffler that the sound of the whole vehicle is improved and the occurrence of abnormal noise is avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:
[0014] Figure 1 This is a schematic diagram of the structure of the muffler of the utility model in a top view;
[0015] Figure 2 This is a schematic diagram of the structure of the connection state between the collecting chamber and the exhaust pipe of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the spoiler of the utility model; DETAILED DESCRIPTION
[0017] Figure 1 This is a schematic diagram of the structure of the muffler of the utility model in a top view. Figure 2 This is a schematic diagram of the structure of the connection state between the collecting chamber and the exhaust pipe of the utility model. Figure 3 Schematic diagram of the structure of the spoiler of the utility model, as shown in Figure 1-3 As shown, a motorcycle muffler comprises a muffler body 1 and an exhaust pipe 5 connected to the muffler body, the exhaust pipe 5 is connected to the engine exhaust port, and there are multiple exhaust pipes 5. A collecting chamber 3 is provided at the connection of the multiple exhaust pipes 5 to the muffler body 1, and a spoiler 4 is provided in the collecting chamber 3 and in the middle of the collecting chamber along the airflow direction. The spoiler 4 is streamlined and has a direction similar to that of the center line of the collecting chamber. Here, similar means similar or close to the same; a catalytic converter conduit 2 is also provided between the collecting chamber and the muffler body, one end of the catalytic converter conduit 2 is conductively connected to the muffler body, and the other end is connected to the collecting chamber 3 for flow conduction; an oxygen sensor mounting seat 6 is also provided on the channel between the catalytic converter conduit 2 and the collecting chamber 3, so as to facilitate the installation of an oxygen sensor for detecting the amount of oxygen contained in the exhaust gas. By setting a spoiler and the spoiler and the collection chamber have similar distortion and deformation trends, the exhaust pipe is divided into two parts by the spoiler after being collected in the collection chamber, which has a better guiding effect on the airflow, reduces the airflow flow resistance, and further improves the exhaust smoothness, so that the engine exhaust gas discharge is smoother, avoiding the influence of excessive exhaust back pressure of the exhaust pipe, and improving the engine performance. Due to the smooth airflow inside the collection chamber, the exhaust sound of the motorcycle is improved and the occurrence of abnormal exhaust noise is avoided.
[0018] In this embodiment: the cross section of the spoiler 4 is Z-shaped, the upper end of the spoiler is welded and fixed to the top of the collection chamber, and the lower end is welded and fixed to the bottom of the collection chamber. By setting a Z-shaped structure, the spoiler can be more conveniently fixed, so that the stability of the fixed structure is good to ensure the strength of the spoiler and increase the strength of the collection chamber. At the same time, it plays a supporting and connecting role, which is a supplement to the welding of the upper and lower parts of the collection chamber.
[0019] In this embodiment: There is a gap 7 between the spoiler 4 near one end of the exhaust pipe and the tail of the exhaust pipe. The purpose of designing the gap is to retain the part that affects the airflow and remove the redundant part to achieve the purpose of lightweight design.
[0020] In this embodiment: the spoiler is close to the end of the muffler body and has a gap 8 with the muffler body. The purpose of designing the gap is to retain the part that affects the airflow flow and remove the redundant part to achieve the purpose of lightweight design.
[0021] In this embodiment: the upper and lower ends of the spoiler are conformably welded to the upper and lower walls of the collecting chamber. The shape of this structure precisely fits the inner surface of the exhaust pipe pipe, which increases the strength of the spoiler structure and facilitates its overlap with the upper and lower parts of the exhaust pipe pipe, increases the welding strength, and facilitates the spoiler to resist the impact of airflow.
[0022] The utility model also provides a motorcycle, the motorcycle includes an engine installed on the motorcycle, the engine exhaust port is connected to a muffler, and the muffler is the motorcycle muffler described above. The motorcycle is installed with a muffler with a spoiler, so that the guide plate and the collecting chamber cooperate with each other to play a guiding role, slowing down the time of air flow dispersion, thereby reducing the impact of the air flow dispersion too quickly, hitting the inner surface of the collecting chamber at the intersection of the exhaust pipe, causing the direction to change and the air flow turbulence. At the same time, it can reduce the mutual influence of exhaust between the exhaust pipes on both sides of the spoiler, and at the same time can reduce the influence of the residual exhaust gas from the previous time on the next exhaust. After the spoiler is installed, the engine exhaust gas can be discharged more smoothly, avoiding the influence of excessive exhaust back pressure of the exhaust pipe, and improving the engine performance. Due to the smooth airflow inside the muffler, the exhaust sound of the motorcycle is improved and the occurrence of abnormal noise is avoided.
[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A motorcycle muffler, comprising a muffler body and an exhaust pipe connected to the muffler body, wherein the exhaust pipe is connected to an engine exhaust port, and the exhaust pipes are multiple, wherein a collecting chamber is provided at the connection of the multiple exhaust pipes to the muffler body, characterized in that A spoiler is arranged in the collecting chamber and in the middle of the collecting chamber along the airflow direction. The spoiler is arranged in a streamlined shape and has a direction similar to the center line of the collecting chamber.
2. The motorcycle muffler according to claim 1, characterized in that The cross section of the spoiler is Z-shaped, the upper end of the spoiler is welded and fixed to the top of the collecting cavity, and the lower end is welded and fixed to the bottom of the collecting cavity.
3. The motorcycle muffler according to claim 2, characterized in that: There is a gap between the end of the spoiler close to the exhaust pipe and the tail of the exhaust pipe.
4. The motorcycle muffler according to claim 2, characterized in that: The spoiler has a gap with one end of the spoiler close to the muffler body.
5. The motorcycle muffler according to claim 2, characterized in that The upper and lower ends of the spoiler are welded to the upper and lower walls of the collecting cavity in a conforming manner.
6. A motorcycle, comprising an engine mounted on the motorcycle, wherein the engine exhaust port is connected to a muffler, characterized in that: The muffler is the motorcycle muffler according to any one of claims 1 to 5.