[Diy_efi] EMS inputs/output?

Bruce nacelp at bright.net
Fri Jul 26 03:53:16 GMT 2002


Unless you actually invented a new language (or component), then you were
cut and pasting what you'd learned.
Case closed,
Bruce



----- Original Message -----
From: "Kent Martin" <kentmartin at froggy.com.au>
To: <diy_efi at diy-efi.org>
Sent: Thursday, July 25, 2002 11:27 PM
Subject: Re: [Diy_efi] EMS inputs/output?


> An engineering thesis is about research and design, not copy
> and paste. And things like I could should read I have performed
> exactly the task he is embarking on already and am doing again.
> If you doubt it then I'll keep you posted.
> Kent.
> ----- Original Message -----
> From: "Bruce" <nacelp at bright.net>
> To: <diy_efi at diy-efi.org>
> Sent: Thursday, July 25, 2002 10:46 PM
> Subject: Re: [Diy_efi] EMS inputs/output?
>
>
> >
> > 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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