Silencer device for a gasoline engine

Abstract

The utility model relates to muffler technical field, concretely is a kind of muffler device for gasoline engine, including muffler shell, air inlet pipe and exhaust pipe, muffler shell is equipped with baffle one and baffle two, and the shell is divided into first chamber, second chamber and third chamber, the top end of air inlet pipe is elbow and is located in second chamber;Baffle one and baffle two are equipped with the connecting pipe between first chamber and third chamber, exhaust pipe penetrates baffle one, baffle two and the top of muffler shell, so that first chamber is connected with the outside space of muffler shell.Its advantages are: first, it is equipped with three chambers, gas is discharged from second chamber, then passes through third chamber and first chamber, and finally discharged from exhaust pipe, due to the change of airflow by three chambers and the increase of resonance time of gas between chambers, noise is reduced;Second, exhaust pipe is equipped with sound-absorbing cotton, and honeycomb board is further equipped between exhaust pipe and connecting pipe, which greatly reduces noise and improves sound-absorbing efficiency.

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