{
  "$type": "site.standard.document",
  "description": "A four-stroke engine (10) employs engine vibration for lubricating engine components. The engine vibration induces a ripple in a surface portion of the oil in an oil reservoir (38), which is located within a crankcase (26) of the engine (10). The oil ripple causes misting of the oil, which…",
  "path": "/patents/1077566",
  "publishedAt": "2005-05-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B63/02",
    "ELECTROLUX HOME PROD INC [US]"
  ],
  "textContent": "A four-stroke engine (10) employs engine vibration for lubricating engine components. The engine vibration induces a ripple in a surface portion of the oil in an oil reservoir (38), which is located within a crankcase (26) of the engine (10). The oil ripple causes misting of the oil, which lubricates exposed engine components. Providing a crankcase (26) wall thickness of about 1.5 mm or less can increase the engine vibration. Alternatively, a clearance area (46) located within the crankcase (26) can be decreased to facilitate contact of the oil surface ripple with a counterweight, thereby splashing the oil onto exposed engine components. Vibration of the engine (10) can be further increased by coupling a vibration plate or spring to a portion of the crankcase (26).",
  "title": "Four-stroke engine system"
}