| 摘要 |
PROBLEM TO BE SOLVED: To provide a flywheel structure of an engine capable of causing a crankshaft to be rotated stably and improving handling ability of pulse generation means by aiming at the low center of gravity of the flywheel. SOLUTION: A non-rotating portion of an outer periphery of a crank shaft 22 to which a flywheel 23 and a timing pulley 38 for driving a cam shaft are provided is fixed with a pulse detector 42 for generating the pulse corresponding to the rotation position of the crank shaft 22. In a flywheel structure of the engine in which the annular detected rotation body 40b detected by the pulse detector 42 and a pickup 41 is attached to the shaft 22, the flange portion as the detected rotation body 40a, and the pickup 41 are made detachable with respect to the crank shaft, respectively. |
