| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of noise in a process of the high-pressure filling of a fuel gas.SOLUTION: In a high-pressure tank 100, a mouthpiece 20 and a mouthpiece 30 are arranged at an apex of a dome part 12 of a liner 10, an external entire area of the liner 10 is coated with a fiber-reinforced resin layer 16, and a mouthpiece flange 21 of the mouthpiece 20 and a mouthpiece flange 31 of the mouthpiece 30 are also coated with a mouthpiece-side region 16c of the fiber-reinforced resin layer 16. The mouthpiece 20 and the mouthpiece 30 have alumite treatment layers 40 on surfaces of the mouthpiece flange 21 and the mouthpiece flange 31 which are coated with the mouthpiece-side region 16c, and a friction coefficient between a flange part and the mouthpiece-side region 16c with the alumite treatment layers 40 interposed therebetween is set to be not larger than 0.17. |
