{
  "$type": "site.standard.document",
  "description": "An internal combustion engine (10) uses hydrogen as fuel. The internal combustion engine (10) includes a coupling passage (31, 32, 34, 35) that connects a crankcase (19) and a surge tank (60) to each other. A controller (100) executes a control of causing an air-fuel ratio of an air-fuel mixture to…",
  "path": "/patents/1394670",
  "publishedAt": "2025-07-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01M13/00",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "An internal combustion engine (10) uses hydrogen as fuel. The internal combustion engine (10) includes a coupling passage (31, 32, 34, 35) that connects a crankcase (19) and a surge tank (60) to each other. A controller (100) executes a control of causing an air-fuel ratio of an air-fuel mixture to be lower when a target output of the internal combustion engine (10) is relatively high than when the target output is relatively low. The controller (100) executes a pressure reduction process of reducing a pressure in an intake passage (20, 29, 60) when the target output is less than a specific value. The pressure reduction process is a process of reducing the pressure in the intake passage (20, 29, 60) to be lower than that before the execution of the pressure reduction process.",
  "title": "CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE"
}