virtual closed loop dwell regulation

[Robert Sandor]

I am working out an idea to fire sparks of a 4cyl. carburatted engine in 
right time without use of lookup tables or a knock detecton nor ionization 
current measurment.The only input to te regulator will be the RPM. The 
lookup table itself is not enaugh, because the  temperature of the air and 
fuel varies. The knock detection and the ionisation current measurment are 
expensive methods. I hope a cheap method "virtual closed loop dwell 
regulation" will work. The main idea is to advance-retard dwell until 
maximal RPM is measured at fixed throttle position(Is this a fuzzy logic). I 
want to use separate coil for each cylinder. At very low RPM (like starting 
the engine) even multiple sparks could be applied. I also want to drive 
switching transistor without a MC3334 or alike IC. If the battery voltage 
and the inductivity of the coils are nearly constant, why to use an 
inteligent ignition driver IC? What do You think is this a good idea?

Robert Sandor

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