[Bulk] RE: [Bulk] Re: [Diy_efi] Donegan ECU

Fri Jan 5 15:18:49 UTC 2007

Get familiar with FreeRTOS then - it's the 'OS' the system will be
running. I already have that part alive on a LPC2106 board, the 2138
board should be here soon.

On Thu, 2007-01-04 at 22:34 -0800, TomC wrote:
> Let me know when some programming is required. I've programmed in C for the
> last 20 years.
> 
> Tom
> 
> 
> 
> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
> Behalf Of Steven P. Donegan
> Sent: Thursday, January 04, 2007 7:34 PM
> To: diy_efi at diy-efi.org
> Subject: Re: [Bulk] Re: [Diy_efi] Donegan ECU
> 
> 
> Well, the electronics are actually fairly easy - the 4 O2 sensor inputs
> I put in the current design will handle narrow or wide band injectors.
> Outputs to control tranny/other stuff - interesting and perhaps if a
> 'real' application arises (ie explain exactly what you want/need) I'll
> add it. Not hard to add things to my design in hardware and software is
> C so I expect folks will pitch in when the time comes.
> 
> And thank you very much for the feedback!
> 
> On Thu, 2007-01-04 at 20:29 -0500, Jay Rabe wrote:
> > On 1/4/07, Steven P. Donegan <donegan at donegan.org> wrote:
> > >
> > > I have not yet added OBDII to my project - it appears that I have to if
> > > it is going to be plug compatable for my Z28 so that will likely
> > > happen.
> > > My intent for this project is a universal EFI/ECM/PCM/MSD box -
> > > something useful on any engine up to 8 cylinders. If it lacks any inputs
> > > or outputs tell me and I'll add them :-)
> >
> >
> > A few things...
> >
> > If you build this ecu only for a returnless fuel system, this limits what
> > fuel pumps you can use.    http://fuel-pumps.net/fuelpumpsfaq7.html#9
> > When writing the software i assume you'd give the option of a normal relay
> > powered style fuel pump.
> >
> > So all this below would be in my dream standalone computer.  This is
> mostly
> > way over the top.
> >
> > One thing i've always wanted to see implimented is something to make
> fueling
> > a variable vane (variable ar) turbo engine "easy" to control fuel.  I
> would
> > think an extra pressure transducer to monitor exhaust pressure before it
> > goes into the turbo would be very helpful to give a new compensation for
> MAP
> > systems.   Even MAF systems could probably benefit from this on the
> ignition
> > side of things.  Yeah these are not common, but i think having the ability
> > to fuel them properly will help their popularity and they are being used
> by
> > a few automakers.   This should help them become more common soon.  Also
> > some kind of circuitry to control the variable actuator.  Maybe a
> > potentiometer to monitor this?  Or, maybe just the actuator potentiometer
> is
> > enough for the fuel/ign compensation?
> >
> > Another thing would be variable cam(s) control.  I've been dreaming of a
> > worm gear "solenoid" controled cam timing adjuster for timing belt
> engines.
> > It would probably need a potentiometer in it to know where it is.  This
> > could be very beneficial if done properly. I know, it would be tough to
> make
> > an adjuster blah, blah, it would be cool tho...  I know you can tell where
> > the timing is from the crank signal vs. the cam signal, but i like
> > potentiometers.   Grab a meter and see what position its by its voltage
> > instead of an oscilloscope and all that fun.
> >
> > If you could make it OBD-II capable, you just might be building the next
> > step in standalone computers.  96 and newer cars who have to pass OBD port
> > only emissions could actually pass emissions.  It would probably never get
> > EPA certified if they knew it was going to be tunable.   OBD II port
> > replicators are illegal...  Maybe leak some software after the release???
> >
> > A self learn circuit for fuel/ignition would be cool.  Id imagine it would
> > be mostly coding tho...
> >
> > Wideband capability?  Not easy, but makes tuning very nice...
> >
> > Boost control?  ...gear variable?
> >
> > Traction control input or traction control?  Maybe like a rev limiter...
> > Maybe an adjustable slip allowance...
> >
> > Launch control?
> >
> > Full throttle shift?
> >
> > Software/hardware to allow a secondary set of injectors?
> >
> > Anti lag?  there is misfire and "jet engine" style
> >
> > I wish i knew more about coding and electronics...
> >
> > Jay
> > _______________________________________________
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