| 摘要 |
<p>PURPOSE:To improve lubricating efficiency by changing by changing the contact position between a cam face of a cam shaft and a pressure-receiving part of a tappet on the basis of the rotation of a rotational member round a cam shaft for changing the timing of a vlave and supplying oil to the rotational member from the side of the cam shaft. CONSTITUTION:When a reciprocating shaft 18 is moved to the right by a driving unit, a rotational member 14 is oscillated round a cam shaft 9 via an oscillating shaft 17, and a vlave timing of a suction (exhaust) valve 5 is slided to the side of delay by changing the contact position between a cam face 9a and a tappet pressure-receiving part 13a in a rotational direction X of a cam shaft. An oil route 14d extended between both end faces in touch with an engine main body 1 and an oil route 14c to connect the oil route 14d through to a circular route 9d provided on the cam shaft 9 are furnished in the rotational member 14, and the circular route 9d is connected to the oil pump via a radial route and an axial route 9c.</p> |
