[Diy_efi] Timing Calculations

[Mark Higgins]

Yes, the processing power would ultimately say wether I have the ability 
to do the calculations, but as far as I can see, after adding up the 
time I have and the calculations I need to perform, I should have ample 
processing power to do it.  The uC has the benefit of only supporting 
one engine type, so I don't need to support more than 4 cylinders, 
multiple trigger setups, multiple ignition and injector setups, 
different idle modes, staged injection...bleh bleh bleh..

I think I'll be leaving this processing out for now, simply because I 
don't have the equipment to test exactly how it's effecting the timing 
and how much of a benefit it is.

On the subject of timing, I just heard about idle control using ignition 
timing adjustment.  Can anymore point me to more information on this?  
How well does it work?  I assume, it would just be a refinement to idle 
air control and not a replacement for it.

Mark Higgins

Daniel R. Nicoson wrote:

> I was going to say, doesn't it depend on how fast your chip goes 
> through the loop with regard to physical events?  If your micro is 
> fast enough that it spends most of its time either waiting or 
> re-calculating the same result then you have "time" to spare on 
> "refinement" routines.  If not keep it simple.
>  
> Neat project!
>  
> Dan Nicoson
>  
>
>     -----Original Message-----
>     *From:* diy_efi-bounces at diy-efi.org
>     [mailto:diy_efi-bounces at diy-efi.org]*On Behalf Of *Djfreggens at aol.com
>     *Sent:* Monday, June 13, 2005 8:05 PM
>     *To:* diy_efi at diy-efi.org
>     *Subject:* Re: [Diy_efi] Timing Calculations
>
>     i highly doubt the engine will decelrate fatser then the timming
>     loop. almost all the factory systems sync up about one rev behind
>     on the older efi systems. the newer stuff seems very close to real
>     time
>
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