| 摘要 |
A valve-actuating mechanism for a plurality of identical valves of a cylinder of an internal-combustion engine has first drag levers (5) which each actuate a valve and which are actuated by a cam for a lower speed range, and second drag levers (7) which are arranged between adjacent first drag levers (5) and which are actuated by specific identical cams for the upper speed range. The first and the second drag levers (5, 7) can be coupled to one another in the upper speed range by means of a rotatable switching shaft (11) which extends through all the drag levers and which can be actuated by an outer electromagnet (21), so that the valves are then actuated according to the contour of the cams acting on the second drag levers (7). |
