Sound deadening system for motorcycle

Abstract

Disclosed is a motorcycle noise reduction system. A noise reduction pipe is arranged in a noise abatement body, the front end of the noise abatement body is connected with an air inlet pipe through a front joint, and the rear end is connected with a tail pipe through a rear joint. The outside of the noise abatement body is provided with an outer cylinder, the front end and the rear end of the outer cylinder are respectively connected with the front and the rear joints, an annular air convection chamber is formed between the outer cylinder and the noise abatement body, and the air convection chamber is communicated with the outside through the air inlet on the bottom of the outer cylinder and the air outlet on the top surface of the outer cylinder. The invention adopts the mode combining heat insulation and natural air flow cooling, can control the surface temperature of the outer cylinder of the silencer at about 50 DEG C, which can prevent the person from being scalded even the person contacts the outer cylinder directly, thereby fundamentally eliminating the safety hidden trouble caused by high temperature of the outer wall of the silencer. The invention has the characteristics of simple structure, easy implementation, strong generality, and the like.

Description

technical field [0001] The invention belongs to the technical field of motorcycle noise reduction, in particular to a layered heat insulation type motorcycle noise reduction system. Background technique [0002] The structure of a traditional motorcycle muffler is shown in Figure 4. A muffler pipe 4 is arranged in the muffler 2, and the tail of the intake pipe 1 is fitted with a front sleeve 5, which is welded with the front end of the muffler 2; the tail pipe The front part of 3 is fitted with a rear socket 6 , which is welded with the rear end of the muffler 2 . The high-temperature exhaust gas discharged during the operation of the motorcycle engine enters the muffler 2 from the intake pipe 1 of the muffler, and is discharged from the tail pipe 3 after being muffled by the muffler pipe 4 . Since the temperature of the exhaust gas generated by the operation of the engine is as high as 600-700 °C, when the exhaust gas flows through the muffler 2, the heat of the high-tempe...

AI Technical Summary

Problems solved by technology

Since the temperature of the exhaust gas generated by the engine operation is as high as 600-700°C, when the exhaust gas flows through the muffler 2, the heat of the high-temperature gas is directly transferred to the outer wall of the muffler 2, resulting in a high temperature of the outer wall of the muffler 2, about 300-300°C. 500°C, it is easy to cause burns, and there is a serious safety hazard; especially for off-road motorcycles, due to its own characteristics, the layout of the muffler is relatively high, close to the upper part of the car body, and the driver and passengers do not pay attention It is easy to touch the outer wall of the muffler 2, and the scalding accidents caused by this happen from time to time

[0003] Some motorcycles use the method of adding a protective plate to cover the muffler 2. Since the protective plate is a newly added part after the muffler is assembled on the motorcycle, the protective plate cannot completely cover the muffler 2 due to the limitation of the installation position. Covering, its protective effect is poor, while destroying the overall appearance of the motorcycle, the unshielded parts of the muffler 2 will still cause burns

In addition, a part of the protective plate is in contact with the outer wall of the muffler 2, resulting in a hot spot with a higher temperature on the protective plate, which is also easy to burn people

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