Automobile exhaust sound -attenuating structure

The utility model discloses an automobile exhaust sound -attenuating structure, including the baffle that muffler casing personally experienced sth. Part of the body, the casing is interior and inserting the inside vent pipe who passes the baffle of casing, the muffler casing body is the double -layer steel plate structure, and casing length is 680mm, just is provided with 4 baffles and is 5 cavities with muffler casing internal chamber partition. The utility model discloses under the condition that does not change blast pipe and silencer cross sectional area ratio, increased the silencer volume, improve the noise elimination volume. 本实用新型公开了种汽车排气消声结构，包括消声器壳体、壳体内的隔板和插入壳体内部穿过隔板的通气管道，消声器壳体为双层钢板结构，壳体长度为680mm，且设置有4块隔板将消声器壳体内腔分隔为5个腔室。本实用新型在不改变排气管和消声器截面面积比值的情况下，增加了消声器容积，提高消声量。