[Bulk] Re: [Diy_efi] Donegan ECU

Mon Jan 8 15:01:18 UTC 2007

I'm working on the basic circuit(s) right now although I have the FreeRTOS real time OS already running on an LPC2106 - need to do minor things to that port to make it run on the LPC2138 but I'll handle that to start off with. Anyone interested in assisting will be heartily welcomed :-) Working on an 8 channel Ion sensing board right now...

Andrew Hopton <hoptona at gmail.com> wrote: Hi,

I can also help with programming in C.  Happy to pitch in if needed.

Andrew.

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
On Behalf Of TomC
Sent: Friday, 5 January 2007 5:04 PM
To: diy_efi at diy-efi.org
Subject: RE: [Bulk] Re: [Diy_efi] Donegan ECU

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  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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