{
  "$type": "site.standard.document",
  "description": "An internal combustion engine includes a first injection valve configured to inject a fuel into an intake port of the internal combustion engine, a second injection valve configured to inject a fuel into a cylinder of the internal combustion engine, and a controller configured to control an…",
  "path": "/patents/1389528",
  "publishedAt": "2026-06-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/3094",
    "TOYOTA JIDOSHA KABUSHIKI KAISHA"
  ],
  "textContent": "An internal combustion engine includes a first injection valve configured to inject a fuel into an intake port of the internal combustion engine, a second injection valve configured to inject a fuel into a cylinder of the internal combustion engine, and a controller configured to control an in-cylinder injection ratio that is a ratio of an in-cylinder injection amount to a total amount of a port injection amount and the in-cylinder injection amount. The controller of the internal combustion engine is configured to increase the in-cylinder injection ratio in response to an integrated value of time during which the internal combustion engine has been operated in a target operation state reaching or exceeding a threshold, the target operation state being an operation state in which the in-cylinder injection ratio is 0% in a low-load low-speed operation region that is predetermined.",
  "title": "INTERNAL COMBUSTION ENGINE"
}