VALVE OPERATING DEVICE FOR ENGINE

摘要

A rocker arm (63) has a valve connection section (63a) to which tappet screw s (70) individually in contact with a pair of engine valves are screwed such that the positions of the tappet screws in an advance/retreat direction are adjustable. The rocker arm (63) further has a cam contact section (65) in contact with a valve operating cam (69), and the rocker arm (63) is interlinked and connected to the engine valves. One end section of a first link arm (61) pivotally supported at the position where an engine body is fixed and one end section of a second link arm (62) pivotally supported by a movable shaft (68a) capable of being displaced are pivotally connected to th e rocker arm (63). The rocker arm (63) is formed such that the width of the valve connection section (63a), which width is in the direction of the rotation axis of the valve operating cam (69), is greater than the width of other portions. This structure enables the amount of lift of the engine valv es to be continuously varied, and makes a valve operating device more compact while achieving excellent following ability of the engine valves in opening and closing operation.