{
  "$type": "site.standard.document",
  "description": "In an internal combustion engine provided with a variable valve mechanism that varies a valve operating characteristic of an intake valve, the valve operating characteristic of the intake valve is detected, and a flow loss coefficient and an effective opening area of the intake valve are calculated…",
  "path": "/patents/1096183",
  "publishedAt": "2003-05-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01L13/0021",
    "HITACHI UNISIA AUTOMOTIVE LTD [JP]"
  ],
  "textContent": "In an internal combustion engine provided with a variable valve mechanism that varies a valve operating characteristic of an intake valve, the valve operating characteristic of the intake valve is detected, and a flow loss coefficient and an effective opening area of the intake valve are calculated based on the valve operating characteristic, to calculate an intake air flow amount in a cylinder portion based on parameters inclusive of the calculated flow loss coefficient and effective opening area.",
  "title": "Apparatus and method for measuring intake air flow amount of internal combustion engine"
}