| 摘要 |
The present invention relates to an exhaust pipe structure for a fuel cell vehicle. The exhaust pipe structure for a fuel cell vehicle comprises: a re-circulation flow passage which is mounted in an upper portion of an exhaust pipe in parallel with the exhaust pipe; and a mixing pipe which is mounted in an end portion of the exhaust pipe and through which external air is drawn. When a concentration of hydrogen being discharged is equal to or higher than a reference value, hydrogen is re-circulated into the exhaust pipe via the recirculation flow passage, is mixed with external air via the mixing pipe, and is discharged to the outside. Accordingly, during starting and a hydrogen purge operation of eliminating hydrogen from a fuel cell, high-concentration hydrogen discharged from the fuel cell is discharged out of a vehicle in a state in which a concentration of the hydrogen has been reduced via the recirculation flow passage and the mixing pipe. |
