| 摘要 |
<p>The invention relates to valve control means for an internal combustion engine. With reference to Figure 1 of the drawings, the valve control means comprises valve means (10), cam means comprising a camshaft (30) having a first cam member (23) and a second cam member (26) having a different profile from the first cam member (23) and means (18) for transmitting reciprocating movement to the valve means (10) from the cam means (23 or 26). The means (18) for transmittimg reciprocating movement comprises a first cam follower member (20) in engagement with the valve means (10) and a second cam follower member (21) movable relative to the first cam follower member (20), and locking means (27) to enable the follower members (20 and 21) to be linked to move together. When the follower members (20 and 21) are not linked the valve means (10) is controlled by the first cam follower member (20) in engagment with and following the profile of the first cam member (23) and when the follower members (20 and 23) are linked the valve means (10) is controlled by the second cam follower member (21) in engagement with and following the profile of the second cam member (26).</p> |
