FUEL CELL SYSTEM AND METHOD FOR INSPECTING GAS LEAKAGE OF SAME

摘要

A fuel cell system (100) is provided with a fuel cell stack (10), a fuel system (1) for supplying the fuel cell stack (10) with a fuel gas, and on-off valves (SV1-SV3, SV12) which form a closed space (12) not including the fuel cell stack (10). The closed space (12) is filled with an inspection gas from the on-off valve (SV3) which functions also as an inspection gas applying port. When inspection is completed, the inspection gas in the closed space (12) is ejected from the on-off valve (SV12) which functions also as an inspection gas ejecting port.