| 摘要 |
PURPOSE:To eliminate the misfiring due to insufficient conducting time and to control various lead angle characteristic accurately even when the fluctuation of rotation is high by controlling the firing position and the conduction starting time with the time from the standard crank position. CONSTITUTION:During operation, pulse signals (e) produced from an input processing circuit 5 for receiving the standard crank position signals 1-4 are counted in an updown counter 12. In CPU7 the rotation read out through a rotation read-out counter 6 and the operating state signal provided through an interface circuit 11 are operated and the comparing value for performing the firing position control is arranged to be output from a latch 13. Said value and the count in the counter 12 are compared with each other in a comparator 15 and when they coincide with each other, the firing signal is produced. In CPU7 the delay time is operated and input in a delay pulse generator 16 to produce the delay pulse signal for controlling the first and second conduction starting positions. |
