{
  "$type": "site.standard.document",
  "description": "The engine has a central combustion cavity (44) that is placed in an upper side of a piston (16). The upper side has an annular peripheral zone (48) with tapered concave shape in order to be inclined towards the cavity. A cylinder head (18) has a chase surface which has tapered convex shape that is…",
  "path": "/patents/1072454",
  "publishedAt": "2005-11-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B23/0621",
    "RENAULT SA [FR]"
  ],
  "textContent": "The engine has a central combustion cavity (44) that is placed in an upper side of a piston (16). The upper side has an annular peripheral zone (48) with tapered concave shape in order to be inclined towards the cavity. A cylinder head (18) has a chase surface which has tapered convex shape that is complimentary to a peripheral zone of the piston for cooperating with the zone of the piston.",
  "title": "Internal combustion engine having a concave piston cooperating with a convex squish surface on the cylinder head"
}