{
  "$type": "site.standard.document",
  "description": "An air-fuel ratio control system for an internal combustion engine (8) is comprised of an engine condition detecting unit (16, 17, 18, 19, 21, 31, 41) and a control unit (20). The control unit is arranged to calculate a target engine torque on the basis of an engine operating condition, to…",
  "path": "/patents/1102677",
  "publishedAt": "2002-08-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D21/08",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "An air-fuel ratio control system for an internal combustion engine (8) is comprised of an engine condition detecting unit (16, 17, 18, 19, 21, 31, 41) and a control unit (20). The control unit is arranged to calculate a target engine torque on the basis of an engine operating condition, to calculate a target EGR ratio, a target excess air ratio and a target intake air quantity on the basis of the engine operating condition and the target engine torque, to calculate a target equivalence ratio on the basis of the target EGR ratio and the target excess air ratio, to calculate a target injection quantity on the basis of the engine operating condition and the target equivalence ratio, and to control an air-fuel ratio by bringing a real intake air quantity to the target intake air quantity and by bringing a real fuel injection quantity to the target fuel injection quantity.",
  "title": "Air-fuel ratio control system for internal combustion engine"
}