| 摘要 |
PROBLEM TO BE SOLVED: To restrain leakage of urea water stored in a urea water tank to an outside even when a vehicle body is oscillated.SOLUTION: A respiration pipe 21 is attached to a urea water tank 14 in order to circulate gas between an inside and an outside of the urea water tank 14, a partition plate 22 with a lower hole having a vent hole 22A and a partition plate 23 with an upper hole having a vent hole 23A are provided in a base end side cylindrical part 21A of the respiration pipe 21 at intervals in a longitudinal direction of the base end side cylindrical part 21A. The partition plate 22 with the lower hole and the partition plate 23 with the upper hole are arranged in such a manner that the vent hole 22A and the vent hole 23A are not overlapped with each other in the longitudinal direction of the respiration pipe 21. Accordingly, even when a part of the urea water tries to infiltrate the base end side cylindrical part 21A through a base end side opening end 21C of the respiration pipe 21, infiltration of the urea water can be cut off by the partition plate 22 with the lower hole and the partition plate 23 with the upper hole. |
