| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce scattering in time required for engine starting.SOLUTION: There is provided a set of eccentric weight comprising a fixed weight eccentrically fixed to a crank shaft and a movable weight eccentrically and rotatably attached to a crank shaft rotating axis. There are provided a relative rotation restricting mechanism between the movable weight and the fixed weight constituted such that when an engine is accelerated to speed up its rotation, a relative position of the movable weight with respect to the fixed weight is set such that the center of gravity of the entire set of the eccentric weight may come on the rotating axis, and a high speed rotating position fixing mechanism for fixing a relative position of the movable weight with respect to the fixed weight when the engine rotation speed is equal to or more than a prescribed rotational speed.</p> |
