| 摘要 |
PURPOSE:To facilitate the ignition timing control with a simple mechanism by oscillating an oscillation member magnetically in response to the revolution of a disk which is turned synchronously with an engine and moving an ignition trigger coil. CONSTITUTION:When an engine is driven to turn a crankshaft, a disk 10 is immediately turned counterclockwise. An electro-magnetic force moving each of a plurality of magnets 13 and 14 toward the disk 10 is generated between both the vortex current generated at the disk 10 and the magnetic field of each of the magnets 13 and 14. An oscillation board 12 is oscillated clockwise through the center of a support pin 11 against the load of a spring 16. The oscillation of the oscillation board 12 causes another oscillation board 20 to be oscillated counterclockwise through the center of a support pin 21 via a link 24. As a result, a magnet and a pulser coil which are attached to the end of the oscillation board 20 and not illustrated in the drawing are moved in the direction of having the spark advance with respect to the turn of the disk 10. |
