| 摘要 |
PURPOSE:To prevent the deterioration of the accuracy in ignition timing by installing a correcting means which corrects the delaying time from the front edge of the pulse signal outputted by a wave-form shaping circuit and outputs an ignition signal into an ignition means. CONSTITUTION:A standard-position output means A outputs a periodical signal at each prescribed crank position. A wave-form shaping means B outputs a pulse signal whose front edge shifts to the advance side of ignition timing as the number of revolution increases. An ignition timing calculating means E calculates an aimed ignition timing. A correcting means G corrects the delay time from the front edge of the above-described pulse signal according to the result of the detection by a revolution variation detecting means F and outputs an ignition signal into an ignition means H. Therefore, the distribution of ignition timing between cylinders can be reduced, and the delay of ignition timing on acceleration can be reduced.
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