{
  "$type": "site.standard.document",
  "description": "A combustion chamber structure for an internal combustion engine includes, in a piston top part, a concave portion (12) formed eccentrically with respect to a cylinder center axis (C1), and a tapered portion (20) that connects an upper end face (22) of the piston top part and a side face (18) of…",
  "path": "/patents/967887",
  "publishedAt": "2014-11-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B23/0621",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "A combustion chamber structure for an internal combustion engine includes, in a piston top part, a concave portion (12) formed eccentrically with respect to a cylinder center axis (C1), and a tapered portion (20) that connects an upper end face (22) of the piston top part and a side face (18) of the concave portion (12). The tapered portion (20) is formed so that a tapered portion volume (volume of a space formed between the tapered portion (20) and an upper wall surface of the combustion chamber) in a first portion of the piston top part is greater than a tapered portion volume in a second portion that is nearer than the first portion to an eccentric direction of the concave portion (12) from the cylinder center axis C1.",
  "title": "COMBUSTION CHAMBER STRUCTURE FOR INTERNAL COMBUSTION ENGINE"
}