Two-stroke motorcycle sled engine exhaust silencer and working method thereof

Abstract

The invention discloses an exhaust silencer of a two-stroke motorcycle sleigh engine, which aims to improve the performance of the exhaust silencer, effectively guarantee the dynamic property, reduce emission and noise, and is small in size and easy to install. A two-stroke motorcycle sled engine exhaust silencer comprises an exhaust pipe combination and a silencing pot combination, the exhaust pipe combination comprises an exhaust pipe connector, a thin straight pipe, a diverging pipe and an expansion pipe which are sequentially arranged in the exhaust direction, the exhaust pipe connector is used for being connected with an engine exhaust port, and a catalyst is arranged at the upstream end of the silencing pot combination. The downstream end of the expansion pipe is connected with the catalyst, the exhaust pipe combination is matched with the catalyst to achieve two-stroke engine dynamic effect exhaust, and the catalyst is used for purification and emission reduction and serves as a shrinkage pipe and a tail pipe structure of a two-stroke dynamic effect pipe at the same time.

Description

technical field [0001] The invention relates to the technical field of exhaust mufflers, in particular to an exhaust muffler for a two-stroke snowmobile engine and a working method thereof. Background technique [0002] With the development of the snowmobile market, snowmobiles are not only used in border patrols, forest snow transportation and other fields, but also in populated areas such as ski resorts. Acoustic performance puts forward higher requirements. In the existing snowmobile exhaust muffler structure, less consideration is given to the discomfort caused by the exhaust noise to the driver and the surrounding crowd. [0003] The power performance of the snowmobile is an important indicator, especially in the off-road environment, most of the snowmobiles on the market now use four-stroke engines, and the two-stroke engines have the characteristics of high power. It can provide the advantage of more sufficient power output than four-stroke engines. However, due to...

AI Technical Summary

Problems solved by technology

Therefore, the exhaust pipe needs to have the structure of thin straight pipe, diffuser pipe, expansion pipe, shrinkage pipe and tail pipe, but the dynamic effect exhaust pipe with the above complete structure needs a large layout space, especially for medium and large displacement. The snowmobile will bring difficulties to the overall layout of the vehicle

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