| 摘要 |
<p>A valve lifting apparatus for an internal combustion engine which utilizes a shuttle (6) which is oscillated by a cranked cam (13). The valve (7) is resiliently mounted in the shuttle (6). Adjustment spiral or stepped ramp cams (21) and (24) allow variation in valve timing and valve lift. Variation can be made while the engine is running to change from a slow running to high speed engine.</p> |
