What is the reason for the loud exhaust sound of the Dayang ADV150?
1 Answers
The loud exhaust sound of the Dayang ADV150 is caused by a malfunction in the exhaust pipe muffler. Below is a detailed introduction to the internal structure of the exhaust pipe muffler: 1. Connecting sleeve: Equipped with an oil-soaked asbestos sealing ring to prevent air leakage at the interface between the exhaust pipe and the muffler tube. 2. Muffler tube: The muffler tube is welded with 7 partition plates, dividing it into 8 silencing chambers (seven expansion chambers and one resonance chamber). The tube core features inverted triangular flow guide grooves and numerous small holes. When the high-temperature exhaust gas from the engine enters the muffler at high speed through the exhaust pipe, the gradually increasing cross-sectional area of the muffler tube allows the gas to expand, reducing its velocity and attenuating the strong pulsating noise. As the gas continues to flow through each expansion chamber, it is forced to pass through the throttling holes on the partition plates and the tube core due to the obstruction of the plates. This causes the gas to be suddenly compressed, split into many fine streams, and then suddenly expand again. Such repeated abrupt changes greatly attenuate the sound energy, thereby reducing the exhaust noise.
