MUFFLER

PROBLEM TO BE SOLVED: To provide a muffler having a sound absorbing material provided in a muffling tube formed of an inner tube and an outer tube to absorb and reduce exhaust noise of exhaust gas flowing in the inner tube with the sound absorbing material and discharging condensed water stagnating in the sound absorbing material to the outside while vaporizing the condensed water with the heat of the exhaust gas. SOLUTION: In the muffler, a cover tube 30 is arranged outside of the muffling tube M in which the outer tube 20 is provided outside of the inner tube 10, and is fixed at its opposite ends to the outer peripheral face of the inner tube 10. The outer tube 20 is heated with the exhaust gas flowing in a gap 33 formed between the cover tube 30 and the outer tube 20 at a lower part of the muffling tube M, and the condensed water stagnated in the sound absorbing material 15, 16 is vaporized into steam with its heat and is discharged to the outside. COPYRIGHT: (C)2011,JPO&INPIT