Exhaust silencer and vehicle

Abstract

The invention relates to an exhaust silencer and a vehicle. The exhaust silencer comprises a shell, an exhaust pipe, a tail pipe, a first silencing pipe, a second silencing pipe and a third silencing pipe. A resonant cavity, a first expansion cavity, a second expansion cavity and a third expansion cavity are at least arranged in the shell, wherein the first expansion cavity, the second expansion cavity and the third expansion cavity are sequentially arranged in the exhaust direction. The first expansion cavity communicates with the resonant cavity. The first silencing pipe is used for communicating the first expansion cavity with the second expansion cavity. The second silencing pipe extends from the first expansion cavity to the third expansion cavity in the exhaust direction and is used for communicating the first expansion cavity with the third expansion cavity. The third silencing pipe is used for communicating the second expansion cavity with the third expansion cavity. Under the action of the resonant cavity, sound waves are buffered and then discharged through the tail pipe, and the silencing performance can be brought into play. When airflow in the first expansion cavity flows backwards into the exhaust pipe due to the pulsation action of pressure waves, gas in the resonant cavity flows out into the first expansion cavity, backward flowing of airflow is restrained, gas is discharged more smoothly, exhaust back pressure is reduced, and the power performance is improved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to an exhaust muffler and a vehicle. Background technique [0002] Vehicles such as motorcycles have an engine, an exhaust pipe connected to the engine and an exhaust muffler connected to the exhaust pipe on the downstream side of the exhaust direction. During the operation of the engine, the exhaust gas generated by internal combustion flows through the exhaust pipe to the exhaust pipe. Gas muffler, the exhaust gas treated by the exhaust muffler is discharged into the atmosphere. [0003] As users have higher and higher requirements for the quality of motorcycles and other vehicles, the exhaust muffler not only meets the power demand and the noise specified by the national standard, but also puts forward higher requirements for the quality of the exhaust sound. For example, the exhaust sound not only needs There is a sense of power, but also a sense of thickness and rhythm. Howe...

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