Autronic ECU and twin-spark (and other unlikely ECU tasks)

[Bruce]

From: "Bernd Felsche" <bernie at innovative.iinet.net.au>
Subject: Re: Autronic ECU and twin-spark (and other unlikely ECU tasks)
> Bruce tapped away at the keyboard with:
> > From: "clayb" <clayb at sbcglobal.net>
> > > > From: Chris Waltham <chris at harvestroad.com>
> > > > Subject: Autronic ECU and twin-spark
> > > You can fire all your plugs. However, certain dual plug engines
> > > adjust the timing of the two plugs independent from each other.
> > > I don't believe the Autronics is programmed to do this.
> > Might be noted on some it's an emission strategy.
> How so?

Talk to Mazda.
 
> GH stated very recently that you want combustion to happen as fast
> as possible. Over a large bore, multiple spark locations (or one
> very long one) would consume the end-gas more steadily.

And?  why mention what's just been covered.
 
> First instinct would be that it's a knock-reduction strategy.
> i.e. second spark ahead of the flame front so that combustion occurs
> at a controlled time. You can ignite later to allow the flame front
> to expand into a more-rapidly-increasing cylinder volume.

First instincts, are different from blind guessing in what way?.
Bruce
  


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