{
  "$type": "site.standard.document",
  "description": "An internal combustion engine includes a fuel injection valve configured to inject hydrogen gas into the cylinder, a selective catalytic reduction catalyst located in an exhaust passage and configured to remove NOx, a urea water injection valve configured to inject urea water into the catalyst, a…",
  "path": "/patents/1368079",
  "publishedAt": "2024-08-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0235",
    "TOYOTA JIDOSHA KABUSHIKI KAISHA"
  ],
  "textContent": "An internal combustion engine includes a fuel injection valve configured to inject hydrogen gas into the cylinder, a selective catalytic reduction catalyst located in an exhaust passage and configured to remove NOx, a urea water injection valve configured to inject urea water into the catalyst, a tank that stores urea water injected by the urea water injection valve, and a remaining amount detection sensor configured to detect a remaining amount of urea water stored in the tank. A controller for the internal combustion engine is configured to execute a restriction process that controls, when the remaining amount is less than a set value, an injection amount of hydrogen gas by the fuel injection valve such that an air excess ratio in the cylinder becomes greater than or equal to a specified excess ratio that is greater than 1.",
  "title": "CONTROLLER FOR INTERNAL COMBUSTION ENGINE"
}