| 摘要 |
<p>A valve driving mechanism including a pair of cam shafts (1, 2) for driving either one of intake valve or exhaust valve, power transmitting device (4,6,7,9) provided on said first cam shaft (2) for driving the cam shafts, phase varying device (10) of annular configuration provided between the cam shaft (2) and the power transmitting device (4) for varying a relative rotation phase between the cam shaft (2) and said power transmitting device (4) so that a compact valve timing control can be accomplished.</p> |
