{
  "$type": "site.standard.document",
  "description": "An internal combustion engine (20) includes a crankcase (30), a cylinder body (40), a cylinder head (50), a cylinder head cover (60), a cam chamber (70), a cam chain chamber (80), a crankshaft (22) disposed in the crankcase, a cam shaft (71) disposed in the cam chamber and the cam chain chamber, a…",
  "path": "/patents/1415083",
  "publishedAt": "2022-12-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02B67/06",
    "YAMAHA MOTOR CO LTD [JP]"
  ],
  "textContent": "An internal combustion engine (20) includes a crankcase (30), a cylinder body (40), a cylinder head (50), a cylinder head cover (60), a cam chamber (70), a cam chain chamber (80), a crankshaft (22) disposed in the crankcase, a cam shaft (71) disposed in the cam chamber and the cam chain chamber, a cam chain (81) disposed in the cam chain chamber, a cam chain guide (83A) to guide the cam chain, a chain tensioner (82) to press against the cam chain via the cam chain guide, and a rib (90) disposed in the cam chain chamber in such a manner as to restrain a lift of the cam chain. The rib is monolithically formed with the cylinder head. The rib includes a portion located upstream of a meshing start position (SP) at which engagement between the cam chain and the driven sprocket wheel begins.",
  "title": "INTERNAL COMBUSTION ENGINE AND STRADDLED VEHICLE"
}