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On Mon, 4 Jun 2007 15:11:53 -0800
"Al Gietzen" <ALVentures@cox.net> wrote:
Tracy does some magic stuff with that EC2. With a V8 there are always
two injector firing at once. As best I can understand it, the fuel is
squirted in sort of whenever and the engine sucks it in when it needs
it. So for a 20B, he uses 3 signals for the injectors and one for the
staging relay which applies power to the secondaries.
Bob W.
Unfortunately, taking that approach on the 20B version lead to a back-door
circuit to the secondary through the primary, allowing about 1/2 voltage
pulses to the injectors that are turned off. It's going to take some diodes
in the injector circuit to cut that off. Haven't installed those yet.
Al
Hmmm, I wonder if that has anything to do with the fact that when I
disable the primary injectors the EM2 RPM reading doubles. I expected
it to go to zero. It reads fine with the secondaries disabled. This
is on a 13B of course. Eventually I would have put a scope on it but
now I'll let the next guy do it. :)
Bob W.
--
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
3.8 Hours Total Time and holding
Cables for your rotary installation - http://www.roblinphoto.com/shop/
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