{
  "$type": "site.standard.document",
  "description": "An internal combustion engine (10) includes a crank angle sensor (40) and a control device (50). The control device (50) includes a function which defines a first relation between an input and a control amount of the internal combustion engine and a second relation between an input and a diagnosis…",
  "path": "/patents/959216",
  "publishedAt": "2015-07-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D35/023",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "An internal combustion engine (10) includes a crank angle sensor (40) and a control device (50). The control device (50) includes a function which defines a first relation between an input and a control amount of the internal combustion engine and a second relation between an input and a diagnosis result of the internal combustion engine. The control device (50) performs frequency analysis of a part of an output signal from the crank angle sensor (40). The part corresponds to a combustion stroke. The control device (50) inputs a value of a size of a frequency component into the function. The frequency component increases as combustion noise increases. The control device (50) performs control or diagnosis of the internal combustion engine in accordance with the control amount or the diagnosis result output from the function.",
  "title": "INTERNAL COMBUSTION ENGINE WITH CRANK ANGLE SIGNAL BASED COMBUSTION NOISE CONTROL"
}