Motorcycle silencer assembly and motorcycle

Abstract

The utility model provides a motorcycle silencer assembly which comprises a silencer body and an exhaust pipe connected with the silencer body, the exhaust pipe is connected with an exhaust port of an engine, and the motorcycle silencer assembly is characterized in that a catalytic converter guide pipe is connected between the exhaust pipe and the silencer body; the catalytic converter guide pipe is inserted into the silencer body to be welded and fixed, and an opening is formed from the part, located in the silencer body, of the catalytic converter guide pipe to the air outlet end to the front of the wall of the silencer body in the axial direction of the catalytic converter guide pipe. After a majority part is cut from the conical section of the catalytic converter guide pipe to the air outlet end on the circumference, the cross-sectional area of the exhaust airflow flowing outlet end is enlarged, the airflow diffusion direction is changed, the exhaust airflow deviates to the opposite side far away from the bottom of the silencer body, the internal structure of the silencer is better adapted, airflow circulation is enhanced, and the service life of the silencer is prolonged. The engine performance is improved; and the exhaust sound of the motorcycle is optimized.

Description

Technical Field

[0001] The utility model relates to the field of motorcycles and accessories, in particular to a motorcycle muffler assembly 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] Since it is a multi-cylinder engine, multiple exhaust pipes are used to connect to the engine exhaust port, and a collecting chamber is set before the exhaust pipe is connected to the muffler body. Since not every cylinder of the multi-cylinder engine is exhausted at the same time, the internal structure of the muffler is shaped due to structural limitations. However, this structure restricts the catalytic converter conduit 6 from entering the muffler body during the exhaust process, and the outlet is small (such as Figure 1 As shown in the figure, the exhaust gas flow is not smooth, which has a significant impact on the condition of the engine, and then affects the engine performance and the sound of the motorcycle. Therefore, the current structure is far from meeting the needs of current design.

[0004] Therefore, there is an urgent need to develop a motorcycle muffler to avoid the impact of exhaust gas on engine performance and improve motorcycle exhaust noise. Summary of the invention

[0005] In view of this, the purpose of the utility model is to provide a catalytic converter conduit with an anisotropic cross-section, which has the advantages of affecting the dispersion direction of the exhaust gas flow and the cross-sectional area of ​​the airflow outlet, improving the engine performance, and optimizing the exhaust sound of the motorcycle.

[0006] A motorcycle muffler assembly includes a muffler body and an exhaust pipe connected to the muffler body, wherein the exhaust pipe is connected to the engine exhaust port, and is characterized in that a catalytic converter conduit is connected between the exhaust pipe and the muffler body, the catalytic converter conduit is inserted into the muffler body and fixed by welding, and an opening is provided in the catalytic converter conduit located in the internal part of the muffler body to the outlet end along the axial direction of the catalytic converter conduit to the muffler body wall. After a part is cut off on the circumference from the catalytic converter conduit to the outlet end, the cross-sectional area of ​​the exhaust gas flow outlet end is enlarged, the airflow diffusion direction is changed and biased to one side, which is more suitable for the internal structure of the muffler, so that the airflow flowability is enhanced, thereby improving the engine performance and optimizing the motorcycle exhaust sound.

[0007] Furthermore: the opening is larger than the radial semicircle of the catalytic converter conduit; this structure is more conducive to the flow of exhaust gas, improving engine performance and motorcycle exhaust sound.

[0008] Further: the catalytic converter conduit is formed into two sections, front and rear, of cylindrical column sections with different diameters, with a tapered section in the middle, and the opening extends from the upper end of the junction of the tapered section of the catalytic converter conduit and the cylindrical column section with a larger diameter from top to bottom to a portion exceeding the diameter of the tapered section and then horizontally extends to the left to the end of the cylindrical column section with a smaller diameter. This structure can make the catalytic converter conduit simple in structure and peculiar in shape, and plays an auxiliary role in the lightweight design of the muffler.

[0009] Further: The opening is provided on the opposite side of the catalytic converter conduit away from the lower end wall of the muffler. By being provided on the opposite side close to the muffler, the exhaust gas flow can flow toward the empty space in the chamber of the muffler body, reducing the air flow resistance and increasing the air flow velocity.

[0010] Further: a first baffle is arranged on the opening side and in the middle of the muffler body and along the front-rear direction of the vehicle, and a first conduit is arranged on the first baffle. By arranging the baffle and the conduit, the airflow flowing into the chamber can flow to the next chamber to buffer or reduce the exhaust noise.

[0011] Further: A second partition is arranged inside the muffler body and perpendicular to the first partition and extending along the rear end of the muffler body, and a second conduit is arranged on the second partition and at a position opposite to the catalytic converter conduit. This structure is conducive to changing the airflow velocity and exhaust noise.

[0012] Further: the opening is cut along the end of the connection between the conical section and the cylindrical column end with a larger diameter, and the cutting exceeds the semicircle and then extends horizontally to the left, and extends to the end of the cylindrical column section with a smaller diameter. This structure can increase the opening area as much as possible, which is conducive to reducing airflow resistance and optimizing exhaust noise.

[0013] Further: the muffler body and the catalytic converter conduit are welded and fixed at the connection between the cylindrical column section with a larger diameter and the conical section. This structure can reduce the diameter difference between the opening and the larger cylindrical column section, which is conducive to smooth exhaust.

[0014] The utility model also provides a motorcycle, including an engine installed on the motorcycle, wherein the engine exhaust port is connected to a muffler assembly, and the muffler assembly is the motorcycle muffler assembly described above. The motorcycle equipped with the muffler assembly can enhance the flowability of the motorcycle exhaust airflow, thereby improving the engine performance; at the same time, the abnormal noise caused by poor exhaust is improved, and the motorcycle exhaust sound is optimized.

[0015] Beneficial effects of the utility model: the motorcycle muffler assembly of the utility model, by cutting off a large part on the circumference from the tapered section of the catalytic converter duct to the outlet end, makes the cross-sectional area of ​​the exhaust gas flow outlet end larger, changes the airflow diffusion direction and deviates to the opposite side away from the bottom of the muffler body, is more adapted to the internal structure of the muffler, enhances the airflow flowability, thereby improving the engine performance and optimizing the motorcycle exhaust sound. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the structure of the catalytic converter conduit connecting the muffler body and the catalytic converter sleeve in the prior art;

[0018] Figure 2 This is a schematic diagram of the structure of the muffler of the utility model in a side view;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the muffler body of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the muffler body of the utility model;

[0021] Figure 5 It is a schematic diagram of the catalytic converter conduit structure in the utility model. DETAILED DESCRIPTION

[0022] Figure 2 This is a schematic diagram of the structure of the muffler in a side view of the utility model. Figure 3 This is a schematic diagram of the cross-sectional structure of the muffler body of the utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the muffler body of the utility model; Figure 5 Schematic diagram of the catalytic converter conduit structure in the utility model, as shown in Figure 2-5As shown, a motorcycle muffler assembly includes a muffler body 1 and a plurality of exhaust pipes 10 connected to the muffler body, the exhaust pipes are connected to the engine exhaust port, a collecting chamber 3 is arranged between the muffler body, a catalytic converter conduit 6 is connected between the collecting chamber 3 and the muffler body 1, and a catalytic converter sleeve 2 is also arranged at the front end of the catalytic converter conduit 6. The catalytic converter conduit is inserted into the muffler body 1 and welded and fixed, and an opening 9 is arranged from the catalytic converter conduit located in the inner part of the muffler body to the outlet end along the axial direction of the catalytic converter conduit to the front of the muffler body wall. An exhaust pipe 11 is connected to the rear end of the muffler body; the exhaust pipe outlet is connected to the atmosphere, and glass fiber 5 is arranged between the inner and outer walls of the muffler body, and the glass fiber 5 is used for heat insulation. Here, the opening larger than the semicircle is the opening, and the opening along the diameter direction of the catalytic converter conduit refers to the opening exceeding the diameter of the catalytic converter conduit; here, the air inlet of the catalytic converter conduit on one side of the exhaust pipe is not the catalytic converter conduit, and the air outlet is located on the inner side of the muffler body. By cutting off a part of the circumference from the conical section of the catalytic converter duct to the outlet end, the cross-sectional area of ​​the exhaust gas flow outlet end is enlarged, and the air flow diffusion direction is changed to one side, which is more suitable for the internal structure of the muffler, and the air flow is enhanced, thereby improving the engine performance and optimizing the exhaust sound of the motorcycle.

[0023] In this example, the opening 9 is larger than the radial semicircle of the catalytic converter conduit. Providing an opening larger than the semicircle is more conducive to the flow of exhaust gas, thereby improving engine performance and motorcycle exhaust sound.

[0024] In this embodiment: Figure 5 As shown, the catalytic converter conduit is divided into two sections, front and rear, which are cylindrical column sections 91 and 93 of different diameters, with a tapered section 92 in the middle. The opening extends from the upper end of the junction of the tapered section 92 of the catalytic converter conduit and the cylindrical column section 91 with a larger diameter, from top to bottom to a portion exceeding the diameter of the tapered section, and then extends horizontally to the left to the end of the cylindrical column section 91 with a smaller diameter. This structure can make the catalytic converter conduit outlet gas outlet smooth, which is conducive to the flow of exhaust gas; and it has a simple structure and a unique shape, which plays an auxiliary role in the lightweight design of the muffler.

[0025] In this embodiment: Figure 3 , 4 As shown, the opening is provided on the opposite side of the catalytic converter conduit away from the lower end wall of the muffler body. By being provided on the opposite side close to the muffler body, the exhaust gas flow can flow toward the empty space in the chamber of the muffler body, reduce the air flow resistance, increase the air flow velocity, and prevent the air flow from directly impacting the muffler body wall near the lower end of the muffler body.

[0026] In this embodiment, a first baffle 8 is provided on the opening side and in the middle of the muffler body and along the front-rear direction of the vehicle, and a first conduit 81 is provided on the first baffle. By providing the baffle and the conduit, the airflow flowing into the chamber can flow to the next chamber to buffer or reduce exhaust noise.

[0027] In this embodiment: a second partition plate 7 is arranged inside the muffler body and perpendicular to the first partition plate and extending along the rear end of the muffler body, and a second conduit 71 is arranged on the second partition plate and at a position opposite to the catalytic converter conduit. This structure is conducive to changing the airflow velocity and exhaust noise.

[0028] In this embodiment: the opening is cut along the end of the connection between the conical section and the cylindrical column end with a larger diameter, and the cutting exceeds the semicircle and then extends horizontally to the left, and extends to the end of the cylindrical column section with a smaller diameter. This structure can increase the opening area as much as possible, which is beneficial to reducing airflow resistance and optimizing exhaust noise.

[0029] In this embodiment, the muffler body 1 and the catalytic converter conduit 5 are welded and fixed at the connection between the cylindrical column section 91 with a larger diameter and the conical section 92. This structure can reduce the diameter difference between the opening and the larger cylindrical column section, which is conducive to smooth exhaust.

[0030] Note: When referring to front, back, top and bottom in this article, the right side facing the figure is the front, the left side is the back, the top side is the upper end, and the bottom side is the lower end

[0031] The utility model also provides a motorcycle, including an engine installed on the motorcycle, wherein the engine exhaust port is connected to a muffler assembly, and the muffler assembly is the motorcycle muffler assembly described above. The motorcycle equipped with the muffler assembly can enhance the flowability of the motorcycle exhaust airflow, thereby improving the engine performance; at the same time, the abnormal noise caused by poor exhaust is improved, and the motorcycle exhaust sound is optimized.

[0032] 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 assembly, comprising a muffler body and an exhaust pipe connected to the muffler body, wherein the exhaust pipe is connected to the engine exhaust port, characterized in that A catalytic converter conduit is connected between the exhaust pipe and the muffler body. The catalytic converter conduit is inserted into the muffler body and fixed by welding. An opening is provided in the catalytic converter conduit located in the inner part of the muffler body from the outlet end to the front of the muffler body wall along the axial direction of the catalytic converter conduit.

2. The motorcycle muffler assembly according to claim 1, characterized in that: The opening is larger than the radial semicircle of the catalytic converter conduit.

3. The motorcycle muffler assembly according to claim 2 is characterized in that The catalytic converter conduit is composed of two front and rear sections, which are cylindrical column sections with different diameters, and a tapered section in the middle. The opening extends from the upper end of the junction of the tapered section of the catalytic converter conduit and the cylindrical column section with a larger diameter from top to bottom to a portion exceeding the diameter of the tapered section and then extends horizontally to the left to the end of the cylindrical column section with a smaller diameter.

4. The motorcycle muffler assembly according to claim 3 is characterized in that: The opening is formed on the opposite side of the catalytic converter conduit away from the lower end wall of the muffler body.

5. The motorcycle muffler assembly according to claim 3 is characterized in that: A first baffle is arranged on the opening side, in the middle of the muffler body and along the front-rear direction of the vehicle, and a first conduit is arranged on the first baffle.

6. The motorcycle muffler assembly according to claim 5 is characterized in that A second baffle is arranged inside the muffler body, perpendicular to the first baffle and extending along the rear end of the muffler body, and a second conduit is arranged on the second baffle and at a position opposite to the catalytic converter conduit.

7. The motorcycle muffler assembly according to claim 3, characterized in that: The opening is cut along the end of the connection between the tapered section and the cylindrical column end with a larger diameter, the cutting exceeds the semicircle and then extends horizontally to the left, and is cut to the end of the cylindrical column section with a smaller diameter.

8. The motorcycle muffler assembly according to claim 7, characterized in that: The welding and fixing position of the muffler body and the catalytic converter conduit is at the connection between the cylindrical column section with a larger diameter and the conical section.

9. 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 a motorcycle muffler assembly as described in any one of claims 1 to 8.

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