{
  "$type": "site.standard.document",
  "description": "A centric phase of an operating angle of an engine valve is detected on the basis of an interval between a reference rotational position of a crankshaft (120) and a reference rotational position of a camshaft (13), and on the other hand, the centric phase is detected each predetermined time, and a…",
  "path": "/patents/1074570",
  "publishedAt": "2005-08-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01L1/2405",
    "HITACHI LTD [JP]"
  ],
  "textContent": "A centric phase of an operating angle of an engine valve is detected on the basis of an interval between a reference rotational position of a crankshaft (120) and a reference rotational position of a camshaft (13), and on the other hand, the centric phase is detected each predetermined time, and a Variable valve Timing Control mechanism (113) is feedback-controlled on the basis of a value which has been updated more recently between both detected results.",
  "title": "Variable valve operating control apparatus for internal combustion engine and control method thereof"
}