| 摘要 |
In a valve-operating device in an internal combustion engine, including two rocker arm shafts mounted in a cylinder head, and intake and exhaust cams and intake and exhaust valves which are connected to each other by rocker arms swingably carried on the rocker arm shafts, a detent plate (42) is fixed in a tightened manner to the cylinder head (3) between the two rocker arm shafts (32, 33) by a tightening bolt (43). Engage portions (42c, 42d) formed on front sides of first and second arms (42a, 42b) of the detent plate (42) in a direction (a) of tightening rotation of the tightening bolt are respectively brought into engagement with engaged portions (32a, 33a) formed on the two rocker arm shafts (32, 33). Thus, it is possible to reliably achieve the prevention of the rotation of the two rocker arm shafts. <IMAGE> |
