{
  "$type": "site.standard.document",
  "description": "A fuel cell system includes an evaporating portion (2), a reforming portion (3) forming an anode fluid, a fuel cell (1) generating an electric power, a tank (4), a water supply passage (8) connecting the tank and the evaporating portion and allowing water in the tank to be supplied to the…",
  "path": "/patents/999948",
  "publishedAt": "2012-07-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01B3/384",
    "AISIN SEIKI [JP]"
  ],
  "textContent": "A fuel cell system includes an evaporating portion (2), a reforming portion (3) forming an anode fluid, a fuel cell (1) generating an electric power, a tank (4), a water supply passage (8) connecting the tank and the evaporating portion and allowing water in the tank to be supplied to the evaporating portion, a water supply source (80) provided at the water supply passage to transmit the water in the tank to the evaporating portion, a stepping motor (82) driving the water supply source, and a control portion (100) driving the stepping motor to transmit the water in the tank to the evaporating portion. The control portion performs a harmful vibration restraining process to change a resonance frequency of the stepping motor by changing the number of steps per rotation of the stepping motor based on a volume of the water transmitted to the evaporating portion per time unit.",
  "title": "Fuel cell system"
}