{
  "$type": "site.standard.document",
  "description": "A fuel cell system includes a fuel gas passage (6), a first gas supply source (60), a shutoff valve (69, 69f, 69s) provided at an upstream side relative to the first gas supply source at the fuel gas passage, a pressure detecting member (61) detecting a gas pressure (P1) of a passage portion (6m)…",
  "path": "/patents/990201",
  "publishedAt": "2013-05-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M8/04201",
    "AISIN SEIKI [JP]"
  ],
  "textContent": "A fuel cell system includes a fuel gas passage (6), a first gas supply source (60), a shutoff valve (69, 69f, 69s) provided at an upstream side relative to the first gas supply source at the fuel gas passage, a pressure detecting member (61) detecting a gas pressure (P1) of a passage portion (6m) of the fuel gas passage (6) between the shutoff valve and the first gas supply source, and a control portion (100). The control portion determines in a determination process whether or not the gas pressure decreases to or below a predetermined pressure (PA) after controlling the shutoff valve to be closed while driving the first gas supply source, and determines that a closing function of the shutoff valve is normal and an air tightness of the passage portion is normal in a case where the gas pressure decreases to or below the predetermined pressure.",
  "title": "Fuel cell system"
}