{
  "$type": "site.standard.document",
  "description": "A control system (50) for a direct-injection spark-ignition internal combustion engine (1) is provided which includes a first control section for switchably controlling a combustion mode between a homogeneous combustion mode and a stratified stoichiometric combustion mode, and a second control…",
  "path": "/patents/1098833",
  "publishedAt": "2003-01-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D37/02",
    "NISSAN MOTOR [JP]"
  ],
  "textContent": "A control system (50) for a direct-injection spark-ignition internal combustion engine (1) is provided which includes a first control section for switchably controlling a combustion mode between a homogeneous combustion mode and a stratified stoichiometric combustion mode, and a second control section for advancing, at a time of switching from the homogeneous combustion mode to the stratified stoichiometric combustion mode, an ignition timing by an amount for offsetting a variation of torque simultaneously with the switching of the combustion mode, gradually retarding the ignition timing after the switching of the combustion mode, and retarding, after the ignition timing has been retarded by a predetermined amount, a compression stroke fuel injection timing in the stratified combustion mode while retarding the ignition timing further. A method of controlling such an engine is also provided.",
  "title": "Control system and method for direct-injection spark-ignition engine"
}