{
  "$type": "site.standard.document",
  "description": "There is provided, in one aspect of the present description, an internal combustion engine system. In one example, the system comprises a controller configured to control an intake valve closing timing varying mechanism to vary a closing timing of the intake valve to regulate air charged in a…",
  "path": "/patents/1014916",
  "publishedAt": "2011-03-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D13/0219",
    "MAZDA MOTOR [JP]"
  ],
  "textContent": "There is provided, in one aspect of the present description, an internal combustion engine system. In one example, the system comprises a controller configured to control an intake valve closing timing varying mechanism to vary a closing timing of the intake valve to regulate air charged in a combustion chamber in accordance with engine operating conditions and, in a first engine operating condition where a least volume of air is required to be charged into the combustion chamber, retard a closing timing of the intake valve to a most retarded crank angle which is after bottom dead center during a cylinder cycle and satisfies the following formulas: ± >= - 0.2685 x µ0 2 + 10.723 x µ0 + 15.815 and µ0 >= 11.0, where ± is the most retarded crank angle and µ0 is a geometric compression ratio of the engine.",
  "title": "Spark ignited internal combustion engine system, engine control method and computer program product for engine control"
}