| 摘要 |
PURPOSE:To make improvements in the accelerativeness of an engine as well as in a rate of fuel consumption, by determining an ignition timing with a wave- form spark advancing angle controlled by a relatively broad angle signal in case of a low engine speed range, while determining the ignition timing with operation results on the basis of suction pressure in case of a medium-high engine speed range. CONSTITUTION:In this ignition device, there are provided with a generator coil 1 generating AC voltage in synchronous with engine revolution, a signal coil 8 generating a first angle signal being narrow in an angle range corresponding to the specified crank position of an engine, and a signal coil 10 generating a second angle signal being relatively broad in the angle range as delayed from the first angle signal. In addition, an operation circuit 14, which receives the first angle signal and calculates a delay position rather than the first angle signal generation position in response to a signal out of a suction pressure signal generating device 16, is installed as well. Moreover, there is provided with an adjusting device 13, which receives an output signal of the operation circuit 14 and adjusts the second angle signal for the duration of the said output signal, whereby an operating point of time in an on-off operation device 7 is adjusted. |
