Importance

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Abstract

An automobile muffler comprising an inner board with a gas-in tube is installed on one side, a outer board with at least one gas-out tube is on the other side, an external hood covers the inner and outer boards vertically to form a chamber, a plurality arrow shape bars are installed horizontally along two spiral lines inside the chamber; two adjacent arrow shape bars are installed with special angle without vacant space; the tips of the arrow shape bars face the gas-in tube, the side wings form an included angle with the tip. When the high pressure, high temperature exhaust gas by engine enters the chamber from the gas-in tube, the exhaust gas is divided and dispersed by the arrow shape bars and forms disturbance condition, the exhaust gas collides to lower the noise level; the arrow shape bars increase the contact time and area with gas that lowers the temperature and pressure effectively.

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First Claim