| abstract |
In the hydrogen filling system, an orifice (120) is provided between the hydrogen filling port (20) and the hydrogen tank (52) having a large heat flux as a flow restricting portion. No orifice is provided on the side of the hydrogen tank (50) having a small heat flux value. The orifice (120) has a function of increasing flow path resistance. As a result, the hydrogen tank (52) having a small heat flux value can be fully filled first, and then the hydrogen tank (50) having a large heat flux value can be fully filled. As the flow restricting portion, a check valve having a cracking pressure ΔP 2 is provided on the side of the hydrogen tank (52) having a large heat flux, and a check valve having a cracking pressure ΔP 1 is provided on the side of the hydrogen tank (50) having a small heat flux. It can also be. Here, ΔP 2 > ΔP 1 is satisfied. |