[Diy_efi] EMS inputs/output?

[Kent Martin]

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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