| 摘要 |
PURPOSE:To minimize the constant current period of the titled device by a method wherein, in the calculator of the conduction time of an ignition coil corresponding to the operational status, the constant current period of ignition coil is divided into M sections and the divided sectional period is sabtracted from the former conduction time to correct the conduction period. CONSTITUTION:A detector is provided near a turning body with multiple magnets on its periphery provided on a crankshaft to transmit crank angle signal N comprising crank reference signal and crank angle unit angle signal. The signal N is transmitted to a reference signal transmitting circuit 11 and a period measuring circuit 12 to make each circuit 11, 12 transmit a reference signal (a) and revolution data (b). An advancing angle and conduction angle data from ROM13 is read out of the data (b) at the feed timing of the reference signal (a) to be fed to a processing circuit 15 processing angle data x<o>, y<o> from both data. Then, the angle data x<o>, y<o> are fed to an output circuit 16 to latch a counter which counts down according to the output from a multiplication circuit 14 to transmit an ignition signal (c). |
