{
  "$type": "site.standard.document",
  "description": "A fuel cell system comprises a fuel cell (1), a hydrogen discharge valve (6) for discharging hydrogen from the fuel cell (1) under a predetermined condition, a hydrogen concentration reduction device (10) for reducing the concentration of hydrogen discharged from the hydrogen discharge valve, a…",
  "path": "/patents/1086964",
  "publishedAt": "2004-05-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M8/04388",
    "HONDA MOTOR CO LTD [JP]"
  ],
  "textContent": "A fuel cell system comprises a fuel cell (1), a hydrogen discharge valve (6) for discharging hydrogen from the fuel cell (1) under a predetermined condition, a hydrogen concentration reduction device (10) for reducing the concentration of hydrogen discharged from the hydrogen discharge valve, a hydrogen sensor (45) for detecting an instantaneous hydrogen concentration of a gas processed by the hydrogen concentration reduction device and an average hydrogen concentration calculating unit for calculating an average hydrogen concentration per hour of a gas processed by the hydrogen concentration reduction device, wherein a hydrogen discharge from the fuel cell by the hydrogen discharge valve is prohibited in the event that an instantaneous hydrogen concentration detected by the hydrogen sensor (45) exceeds a first threshold, or in the event that an average hydrogen concentration calculated by the average hydrogen concentration calculating unit exceeds a second threshold which is lower than the first threshold.",
  "title": "Fuel cell vehicle detecting and controlling the H2-concentration in the exhaust gas"
}