| 摘要 |
In typical combustion engines the inlet valves and outlet valves are subjected to lifting mechanism and to long stroke springs for closing the valves in periodic cycles. Strong and long springs are required and their life time is limited. The invention therefore provides a valve arrangement, wherein the springs are not providing strokes, but act merely only to adjust mechanical clearances. The springs are becoming short thereby and the life time increases. The strokes of the valves are actuated by a novel cam shaft which extends through a window in the shaft of the respective valve. Further details are provided to secure a smooth operation of the valve arrangement, to reduce the weight thereof and to provide proper lubrication of the rotary cam shaft. The number of reciprocating elements is reduced.
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