Multispark

[Sandy]

Much of the below has been talked about, I have proposed such use for an
extra TPU pin, but again, the biggest problem is the dwell time of the
second set of coils... See some of the old messages from a last week.


>If you really can't stand to have the plug fire on the wasted spark, could
>you drive the ignition driver with a latch?  The cylinders would be paired
>in and "odds or evens" type system (just the way they are in the wasted
>spark system) and a normal output port from the micro would select which 
>cylinder out of the pairs would fire.  The TPU channel for the cylinder pair
>would feed both cylinders.  The cylinder select line would go straight to the
>even cylinders and be inverted to feed the odd cylinders.  The TPU and the 
>select line would be ANDed together to control the latch.  Possible?  What
>problems do you see?
>

Sandy