Quote:
Originally Posted by HarryD
Several reasons. The Kettering Ignition has, in relative terms a short, weak spark. CDI produces a short, strong spark. An Inductive spark produces a long, strong spark.
The reason for the ignition design evolution is to ensure the charge in the cylinder is fully burned at the correct time. At low RPM, Kettering is fine. CDI solved the problem of getting a strong spark at high RPM but did not help on the emissions front. Inductive ignition allows for a strong spark to ensure emission compliance.
Different courses for different horses.
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Why are you even bringing this antiquated ignition system into the discussion?
It has no relevance in this thread. The last time a Porsche used it was in the late '60s.
Most all on the Pelican Forum know about "ignition design evolution".