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Old 10-03-2008, 11:41 AM   #18 (permalink)
jim-frank
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Join Date: May 2008
Location: western Colorado
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ScabbySentra - '93 Nissan Sentra SE
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Quote:
Originally Posted by KitCarlsonEMS View Post
I love spending time in the lab, bringing reality to ideas.
Me too!

It would be fun to work up this idea to a testable unit. I can make a MOSFET H bridge driver for a flyback transformer. I made a similar unit for an experimental induction heater a year or two back. A timing/triggering unit shouldn't be too hard to design, either.

Maybe a signal tapped from the cam position sensor, and some minor computing to derive an adjustable spark timing? How much overlap between cylinders (for the spark cycle) is there? Would you be able to do it with two transformers, or would you need one for each cylinder?

( I guess I could figure the answers to these questions out myself, but I'm feeling lazy this morning... )

Actually a lawn mower might be a better test bed, so the engine that blows up on version one isn't that expensive to replace.


Kit- e-mail me at engr@coloradoradio.com if you want to discuss this in a side conversation. Use the subject 'flyback transformer' so I can spot it through my spam filter.
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