{
  "$type": "site.standard.document",
  "description": "A control system (19, 20, 30, 40) for an internal combustion engine is provided which comprises a compression ratio control mechanism (19) and a control unit (40) for controlling the compression ratio control mechanism. The control unit including an acceleration parameter obtaining section for…",
  "path": "/patents/1097428",
  "publishedAt": "2003-03-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01L1/34",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "A control system (19, 20, 30, 40) for an internal combustion engine is provided which comprises a compression ratio control mechanism (19) and a control unit (40) for controlling the compression ratio control mechanism. The control unit including an acceleration parameter obtaining section for obtaining an acceleration parameter corresponding to a change of an engine speed, an acceleration determining section for determining whether the engine is in a slow or fast acceleration state on the basis of the acceleration parameter, and a control section for controlling at least one of a compression ratio change speed at which the engine compression ratio is changed and a compression ratio change start time at which a change of the engine compression ratio is started, on the basis of whether the engine is in a slow or fast acceleration state. A control method is also provided.",
  "title": "Control system and method for an internal combustion engine"
}