{
  "$type": "site.standard.document",
  "description": "For an in-cylinder direct injection spark ignition internal combustion engine including an intake port provided with a tumble control valve, a startup control method is presented. When a startup of the engine satisfies a predetermined cold start condition requiring a retard operation of the engine…",
  "path": "/patents/1372037",
  "publishedAt": "2024-12-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/064",
    "NISSAN MOTOR CO., LTD."
  ],
  "textContent": "For an in-cylinder direct injection spark ignition internal combustion engine including an intake port provided with a tumble control valve, a startup control method is presented. When a startup of the engine satisfies a predetermined cold start condition requiring a retard operation of the engine for catalyst warmup, a startup process is performed. The startup process includes: closing the tumble control valve; after the closing of the tumble control valve, starting to crank the engine; implementing fuel injection of the engine by a single-injection operation during a time period from an initial cycle of combustion of the engine to an event that the engine rises and reaches a predetermined rotation speed; after the event, shifting from the single-injection operation to a multiple-injection operation; and substantially simultaneously with the shifting to the multiple-injection operation, starting an ignition timing retard.",
  "title": "STARTUP CONTROL METHOD FOR IN-CYLINDER DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE, AND INTERNAL COMBUSTION ENGINE SYSTEM"
}