{
  "$type": "site.standard.document",
  "description": "The piston (1) has a lateral surface formed between combustion chamber (VB) and cylinder wall (31) of cylinder (3) of engine, set facing piston crown (101) arranged remote from piston skirt (102) frictionally cooperating with piston ring pack (4) having a sub-ring packing (400). The piston ring…",
  "path": "/patents/993362",
  "publishedAt": "2013-01-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02F3/00",
    "WAERTSILAE NSD SCHWEIZ AG [CH]"
  ],
  "textContent": "The piston (1) has a lateral surface formed between combustion chamber (VB) and cylinder wall (31) of cylinder (3) of engine, set facing piston crown (101) arranged remote from piston skirt (102) frictionally cooperating with piston ring pack (4) having a sub-ring packing (400). The piston ring (41) is arranged in piston ring groove (411) between piston crown and oil ring groove (4301) in which oil distribution ring (43) is provided. A pressure relief unit (4000) is provided for controlled pressurization of oil distribution ring with preset portion of combustion chamber pressure (P).",
  "title": "Piston and oil distribution ring for a stroke piston combustion engine"
}