I am building a programmable ignition (Jaycar kits) in a bid to get rid of the dizzy, only just realised it won't get rid of the dizzy.
It has a central unit and a separate a coil driver (plus knock sensing unit). So in principle it is designed to drive the coil and then use the dizzy rotor arm to send the spark to each plug. Can use the dizzy reluctor to trigger or any other device imaginable.
If I could do the spark distribution electronically then I can just bin the dizzy for good.
If I couldn't do better I know I could use some sort of counter to divide the coil signal into four, trigger four coil drivers which drive four coils and each would fire a plug. But I know there are better ideas. For instance, the 205Si ECU is driving a coil with four outputs (perhaps similar to four coils) for the plugs.
How is that accomplished (I mean logistically) by the ECU? In principle I think I know. I would just need to find a wiring diagram that would tie in with my ignition controller, I suppose.
The way I see it, it can be done with such a counter that would count to four and switch on four outputs in turn either after the ignition controller module and use four coil drivers/four coils or after the coil driver and use just one and four coils.
Anyone have such a circuit diagram they wouldn't mind sharing?