{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreiarsgwkre5qzzaapuufhvbmj3pqc5d5erz4opcgbqctp34d3ab3oi"
    },
    "mimeType": "image/png",
    "size": 99309
  },
  "description": "An upper oil pan assembly is attached to the lower portion of a cylinder block. An opening is formed on a side wall of the upper oil pan assembly. The variable compression ratio mechanism changes a top dead center position of a piston in accordance with the rotational position of a control shaft to…",
  "path": "/patents/1281187",
  "publishedAt": "2021-01-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B75/041",
    "Nissan Motor Co., Ltd."
  ],
  "textContent": "An upper oil pan assembly is attached to the lower portion of a cylinder block. An opening is formed on a side wall of the upper oil pan assembly. The variable compression ratio mechanism changes a top dead center position of a piston in accordance with the rotational position of a control shaft to thereby change the compression ratio. The control shaft is rotationally driven by an actuator. At least a portion of the actuator is fixed to a main bearing cap in a state in which at least a portion thereof is positioned on the outer side of an upper oil pan assembly.",
  "title": "VARIABLE-COMPRESSION-RATIO INTERNAL COMBUSTION ENGINE"
}