| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine valve train adapted also to a high revolution engine by suppressing an increase in the weight of a valve bridge while absorbing a difference in heights between intake valves and exhaust valves opened/closed by a common valve bridge. SOLUTION: A guide rod 16 is vertically slidably arranged in a guide pipe 15 provided on a cylinder head 1, and the valve bridge 17 is horizontally swingably coupled to the upper part of the guide rod 16. Abutting surfaces 17c at both the right and left ends of the valve bridge 17 abut respectively on the stem upper parts of the intake valves 4 arranged in parallel to each other, and the right end of the valve bridge 17 is positioned on the stem upper part of the corresponding intake valve by a rotation restriction fitting 21 to thereby restrict the horizontal rotation of the valve bridge 17. COPYRIGHT: (C)2009,JPO&INPIT
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