| 摘要 |
PURPOSE:To improve the space utilization efficiency around the rotary shaft of engine by providing a detection board arranged with a plurality of ignition operating sections corresponding with respective voltage generating section and a detector for detecting the power supply timing to respective high voltage generating section. CONSTITUTION:High voltages produced from respective high voltage generating section 15, 16 are fed to the ignition plugs 11-14. A plurality of ignition operating sections 25, 26 corresponding with said sections 15, 16 are arranged on a detection board 23. The detectors 27, 28 can pass through the circumference of the detection board 23 to detect the passing time through the ignition operating sections 25, 26 of the detection board 23. Consequently, the space utilization efficiency around the crank shaft 24 can be improved. While the ignition timing can be regulated accurately by simply moving the fixing bracket integrated with the detectors 27, 28 in circumferential direction of the detection board 23. |
