{
  "$type": "site.standard.document",
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  "description": "An internal combustion engine (1) is a spark-ignition internal combustion engine comprising a turbocharger (2) and an exhaust gas recirculation device, and operation according to a stoichiometric air-fuel ratio is performed by performing exhaust gas recirculation even in a high-load range including…",
  "path": "/patents/1393945",
  "publishedAt": "2024-12-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D35/027",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "An internal combustion engine (1) is a spark-ignition internal combustion engine comprising a turbocharger (2) and an exhaust gas recirculation device, and operation according to a stoichiometric air-fuel ratio is performed by performing exhaust gas recirculation even in a high-load range including a maximum-output operation point. When the maximum output operation point is required (step 1), intake air information such as atmospheric pressure and outside air temperature (step 2) is used as a basis to calculate intake air density (ρ) (step 3), which is compared with a predetermined density threshold (ρ#) (step 4). When the intake density (ρ) is equal to or less than the density threshold (ρ#) at a high-altitude location or the like, an exhaust gas recirculation rate is set to 0 (step 6). As a result, the maximum output can be higher than when exhaust gas recirculation is performed.",
  "title": "CONTROL METHOD AND CONTROL DEVICE FOR A SPARK-IGNITED INTERNAL COMBUSTION ENGINE"
}