[Diy_efi] EMS inputs/output?

[Bruce]

Ya right,
I like things like *I could* yada yada.
I still say a well thought out, less complex project would be better.
Just read thru some oem code, and see what's involved in an oem QUALITY type
set up.
Bruce


----- Original Message -----
From: "Kent Martin" <kentmartin at froggy.com.au>
To: <diy_efi at diy-efi.org>
Sent: Thursday, July 25, 2002 12:58 AM
Subject: Re: [Diy_efi] EMS inputs/output?


> Don't listen to Bruce,
> Your a fourth year student and I did one in my third year for a project.
> I could write the code for one in about 3 weeks full time. Your a student
> so this should be much trouble.
> Kent.
> ----- Original Message -----
> From: "Bruce" <nacelp at bright.net>
> To: <diy_efi at diy-efi.org>
> Sent: Thursday, July 25, 2002 10:47 AM
> Subject: Re: [Diy_efi] EMS inputs/output?
>
>
> >
> > Design and build one?.
> > It would be primitive at best, there's alot to this.
> > I'd suggest you investigate the Megasquirst ecm, build one of them, and
> just
> > get it correctly calibrated for a particular car, that would be a years
> > work.  Or take an existing ecm, and analyse/disect it.
> > Bruce
> >
> > ----- Original Message -----
> > From: alex averbuch
> > Subject: [Diy_efi] EMS inputs/output?
> > I'm on my final year of an Engineering degree and as part of my course I
> > have to do a research paper.  Engine Management Systems have always
> > interested me so I'm going to try building one, only problem is I know
> very
> > little about the input and output signals that an EMS requires.
> > Listed below are all the inputs/outputs that I KNOW are used.  If anyone
> > knows of anymore then could you please tell me and include what the
> function
> > of the input/output is.
> > INPUTS
> >   Water Temp: Used for cold start.
> >   Manifold Air Pressure: Used to measure Engine Load.
> >   RPM
> >   LAMBDA:  Measures Air/Fuel mixtures in exhaust.
> >   Throttle Position: Used to control boost or for Fueling compensations.
> >   Ping Sensor: Detects detonation.
> >   Crank Angle: Used a trigger for firing each spark plug? NOT TOO SURE
> ABOUT
> > THIS
> > OUTPUTS
> >   Injector Timing: PWM output? NOT TOO SURE ABOUT THIS EITHER
> >   Ignition: I have know Idea what this output signal is or where it is
> sent.
> > :(
> >
> >
> >
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