{
  "$type": "site.standard.document",
  "description": "The engine system 1 has an engine ECU 10 including: an equivalent ratio calculation means that calculates an average value of equivalent ratio for one cycle in a combustion chamber of the engine 100, a maximum combustion temperature calculation means that calculates a maximum value of combustion…",
  "path": "/patents/981611",
  "publishedAt": "2013-11-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D13/0234",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "The engine system 1 has an engine ECU 10 including: an equivalent ratio calculation means that calculates an average value of equivalent ratio for one cycle in a combustion chamber of the engine 100, a maximum combustion temperature calculation means that calculates a maximum value of combustion temperature in the combustion chamber for the same cycle as for calculation of the average value of equivalent ratio by the equivalent ratio calculation means; and a determination means that determines a smoke-generating state of the engine 100 based on a calculation result by the equivalent ratio calculation means and a calculation result by the maximum combustion temperature calculation means. The engine ECU 10 determines that the smoke-generating state is in a first region when the average value of equivalent ratio is less than a given first threshold value and the maximum value of combustion temperature in the combustion chamber is less than a given second threshold value, and commands an electric VVT mechanism 26 to retard a closing timing of an intake valve 22. When the smoke-generating state is determined to be in a region other than the first region, the electric VVT mechanism 26 is commanded to advance the closing timing of the intake valve 22.",
  "title": "CONTROL DEVICE FOR COMPRESSION IGNITION TYPE INTERNAL COMBUSTION ENGINE AND METHOD FOR DETERMINING SMOKE-GENERATING STATE OF COMPRESSION IGNITION TYPE INTERNAL COMBUSTION ENGINE"
}