[Diy_efi] PC-laptop based efi

[Alexei Pavlov]

Hi,

The idea isn't new and I have heard about race cars having such setup.
I'm convinced that if you take care to turn off all Bios/Dos/Windows
ITs you can build a really performant system, as Intel/AMD are fast
enough to do everything by software, except the basic timer step
(there is one timer channel you can use for this basic time step).
The main laptop problem for such applications is a fast interface.
PCMCIA interfaces are rare and probably expensive.

If you plan using laptop just to supervise an embedded microcontroler,
it's what you can get with any existing programmable ECU. No need
to invent the wheel.

Alexei



> > Hi, i'm looking into the possibility of designing a efi control system that
> > would run on a laptop. I think that it would be of the multi-port variety. In
> > order to avoid windows-timing issues, i have been thinking of using dedicated
> > microcontrollers to actually turn on and off the injector. Basically the PC
> > would take in sensor inputs, and compute the required pulse width for the
> > injectors, and send this to the microcontrollers, which would turn on the
> > injector for the required duration at the correct time. Does anyone know any
> > basic flaws in this design? I like it because it could provide a real-time
> > user interface with the efi controller, so tunning, and diagnosing should be
> > easier. Also, i think a laptop running the engine would just be cool! Any
> > input would be greatly appreciated.
> 
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