| 摘要 |
PURPOSE:To improve the torque and output on acceleration by advance-angle-correcting the fundamental advance-angle value by the advance-angle correction amount calculated according to the acceleration speed on acceleration and temporarily correcting the fundamental advance-angle value by the delayed-angle value correction amount in the early period of acceleration. CONSTITUTION:A fundamental advance-angle calculating means 3 for calculating the fundamental advance-angle according to the output signals of an engine revolution speed detecting means 1 and an intake air amount detecting means 2 is provided, and the primary electric current of the ignition coil of an ignition means 4 is cut-off- controlled according to the result of calculation. An acceleration-speed calculating means 5 calculates the acceleration speed from the output of an operation-state detecting means 9 for detecting the throttle opening-degree, and an acceleration discriminating means 7 judges sharp acceleration, and a correction-amount calculating means 6 calculates the advance-angle correction -amount and the delayed-angle value correction amount according to the calculated acceleration speed. On acceleration, the fundamental advance-angle value is advance-corrected according to the above-described advance-angle correction value, while in the initial period of acceleration, the fundamental advance-angle value is temporarily corrected according to the above-described delayed-angle value correction-amount. |
