| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust system for a fuel-cell automobile that discharges condensed water to the outside of a tube in front of a muffler, and can prevent deterioration of acoustic properties of an acoustic material. <P>SOLUTION: In the exhaust system of the fuel-cell automobile comprising the muffler that muffles the sound of an exhaust sound, and a tube member connected to the front of the muffler, at least part 3A of the tube member is formed into a double-tube structure, composed of an outer tube 4 and an inner tube 6 that is arranged inside the outer tube 4 with a prescribed space 5 therebetween; and at least one or more small holes 8, 9 for discharging the condensed water are formed in the outer tube 4 and the inner tube 6. The condensed water is discharged to the outside of the tube from the small hole 9 of the outer tube 4 passing through the space 5, after flowing into the space 5 via the small hole 8 formed in the inner tube 6. The condensed water is thereby prevented from flowing into the muffler, and deterioration of the acoustic properties of the acoustic material can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
