{
  "$type": "site.standard.document",
  "description": "A pair of valve-timing controlling oil passages (P18a,P18b) leading to a second valve-operating characteristic changing mechanism are defined in a lower camshaft holder (25), and a valve lift controlling oil passage (P11) leading to a first valve-operating characteristic changing mechanism is…",
  "path": "/patents/1104842",
  "publishedAt": "2002-05-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01L1/02",
    "HONDA MOTOR CO LTD [JP]"
  ],
  "textContent": "A pair of valve-timing controlling oil passages (P18a,P18b) leading to a second valve-operating characteristic changing mechanism are defined in a lower camshaft holder (25), and a valve lift controlling oil passage (P11) leading to a first valve-operating characteristic changing mechanism is defined between the pair of valve-timing controlling oil passages in a mating surface of the lower camshaft holder with a cylinder head (Fig. 14). In an area where the width of the valve lift controlling oil passage (P11) is reduced in order to avoid the interference with the valve-timing controlling oil passages (P18a,P18b), the depth of the valve lift controlling oil passage (P11) is larger than that in the other positions, whereby a sectional area of the oil passage (P11) is secured. Thus, the oil passages leading to the first and second mechanisms can be formed compact in a camshaft support member.",
  "title": "Valve operating control system in engine"
}