VEHICULAR MUFFLER

PROBLEM TO BE SOLVED: To provide a vehicular muffler capable of preventing generation of an abnormal sound caused by a louver, even when a flow speed of exhaust gas is increased by reducing a diameter of an inner pipe. SOLUTION: This vehicular muffler is composed of the inner pipe 2 for flowing the exhaust gas and an outer pipe 4 having a resonance chamber between the outer pipe and this inner pipe 2 and arranged outside the inner pipe, and is provided by arranging the louver having a pair of small holes 9a and 9b in the inner pipe 2. The louver 8 is arranged in such a state as to open the pair of small holes 9a and 9b in the peripheral direction of the inner pipe, and a cutout opening part 10 is formed on the exhaust gas downstream side of the louver 8. COPYRIGHT: (C)2009,JPO&INPIT