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purpose of waste spark ign

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1 year 11 months ago #55833 by ronald.fiala

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1 year 11 months ago #55842 by JeffBirt
Replied by JeffBirt on topic purpose of waste spark ign
So you can use 1/2 the number of ignition coils. Each coil feeds a pair of cylinders firing at twice the normal rate. This gives spark on one cylinder at the proper time and during the exhaust cycle on its companion cylinder where the extra spark does no harm (or good).
The following user(s) said Thank You: ronald.fiala

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1 year 11 months ago #55885 by Andy.MacFadyen
Wasted spark greatly simplifies wiring and you only need one coil driver in the ECU for two cylinders.
The only downside is increased spark plug gap erosion but that isn't as much of problem with modern exotic metal electrode plugs

" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)



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