{
  "$type": "site.standard.document",
  "description": "A hydrogen mixed-combustion electronic control device that controls the mixed ratio of hydrogen mixedly combusted in a combustion room of a hydrogen mixed-combustion engine having a first fuel supply device that supplies first fuel to the engine and a second fuel supply device that supplies fuel…",
  "path": "/patents/1389523",
  "publishedAt": "2026-06-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0027",
    "Hitachi, Ltd."
  ],
  "textContent": "A hydrogen mixed-combustion electronic control device that controls the mixed ratio of hydrogen mixedly combusted in a combustion room of a hydrogen mixed-combustion engine having a first fuel supply device that supplies first fuel to the engine and a second fuel supply device that supplies fuel partially containing hydrogen to the engine as second fuel comprises: a crank angle sensor that detects a rotation time of a crank shaft of the engine; and a computation unit that computes an extreme value of the rotation time of the crank shaft and an extreme value timing on the basis of a detection result of the crank angle sensor. The electronic control device determines a combustion state of the engine on the basis of the extreme value and the extreme value timing.",
  "title": "HYDROGEN MIXED-COMBUSTION ELECTRONIC CONTROL DEVICE AND POWER GENERATION SYSTEM USING SAME"
}