[Diy_efi] Donegan ECU

[Steven P. Donegan]

Well, not an original idea of mine - Ford apparently did this at one
point. I just thought it would be potentially useful for folks doing
nasty cars - less plumbing and a possibility of effectively tuning
injectors a bit - ie put a larger injector in and tailor it by injector
pulse and some level of fuel pressure tuning - I think you may be able
to get +-10% or so from any given injector with that approach.

On Thu, 2007-01-04 at 10:23 +1100, mdacmail at optusnet.com.au wrote:
> This sounds cool...is closed loop control of fuel pressure an oem feature for any new vehicles? Or just something you are trying out? Are you going to use a PI controller? I am guessing when you snap the throttle open the PI controller should know about this quite quickly...not wait to see a drop in fuel pressure? 
> 
> > To add something somewhat useful to the list in this reply I'll say the
> > Donegan ECM is coming along nicely :-) The input board is going to fab
> > out at about 3.0 inches by 2.2 inches (exactly matching the CPU board -
> > ARM based Steve). Inputs designed in are MAP, MAT, Barometric, Coolant,
> > Throttle, Oil pressure/temp, 4 ea O2 sensors, Crank and Cam position, 2
> > ea EGT sensors - well pretty much everything everyone told me should be
> > sensor inputs. Fuel pressure input I'll put on the 'relay' control board
> > - that will do PWM control of the fuel pump eliminating the need for a
> > regulator or return line.
> > 
> > Happy New Year :-)
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