{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "An internal combustion engine () has a variable compression ratio mechanism () that varies a mechanical compression ratio and a variable valve timing mechanism () that varies a valve timing of an intake valve (). When there is a demand to execute reference position learning (step ) for system…",
  "path": "/patents/1278541",
  "publishedAt": "2020-12-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D15/02",
    "Nissan Motor Co., Ltd."
  ],
  "textContent": "An internal combustion engine () has a variable compression ratio mechanism () that varies a mechanical compression ratio and a variable valve timing mechanism () that varies a valve timing of an intake valve (). When there is a demand to execute reference position learning (step ) for system calibration of the variable valve timing mechanism (), the execution of the reference position learning is permitted on the condition that the mechanical compression ratio is higher than a threshold value VCRth (step ). When any anomaly is present in the variable compression ratio mechanism (), the reference position learning of the variable valve timing mechanism () is prohibited (steps and ).",
  "title": "CONTROL METHOD AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE"
}