{
  "$type": "site.standard.document",
  "description": "To improve output and thermal efficiency of a gas engine by advancing the ignition timing to a maximum extent while knocking is suppressed, in the plurality of cylinders, by a simple and low-cost means, in a first calculation part 32, a knocking limit ignition timing Tia of a representing cylinder…",
  "path": "/patents/967680",
  "publishedAt": "2014-11-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D19/02",
    "MITSUBISHI HEAVY IND LTD [JP]"
  ],
  "textContent": "To improve output and thermal efficiency of a gas engine by advancing the ignition timing to a maximum extent while knocking is suppressed, in the plurality of cylinders, by a simple and low-cost means, in a first calculation part 32, a knocking limit ignition timing Tia of a representing cylinder 14a is calculated based on an in-cylinder pressure waveform. In a second calculation part 34, a knocking limit ignition timing Tia' of the representing cylinder 14a is calculated by substituting an operation state quantity and a basic engine specification value into a formula (1). In a third calculation part 36, the knocking limit ignition timings Tia ant Tia' are compared to obtain a correction factor C. In a fourth calculation part 38, based on the obtained correction factor C, the knocking limit ignition timings Tib-Tif of cylinders other than the representing cylinder 14a are calculated. In the fourth calculation part 38, the correction factor C of each of the cylinder is preferably modified based on test data obtained from a test machine of the same type as a gas engine 10.",
  "title": "COMBUSTION CONTROL DEVICE FOR GAS ENGINE"
}