spark question: high current or high voltage

[Seth]

If you are spark igniting gasoline, then I don't have an opinion.  But
if it is propane or methane (CNG), then a shorter duration, higher
voltage ( capacitive discharge) spark can fail to reliably light those
two fuels.  A conventional ignition actually works better for those two gases.

-Seth 

Brian Franchuk wrote:
> 
> I'm currently working on a high current ignition system but I've got a
> couple questions.  Is it better to use a wider gap and higher voltage or a
> small gap (lower voltage 10-15kV) and very high current (spark current in
> the 1-5 amp range)?  There was some talk about plasma jet ignition a while
> back.  Has anyone built such a system?
> 
> Thanks.
> 
> Brian Franchuk
> 
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