[Diy_efi] Timing Calculations

TheEthereal at gmx.net TheEthereal
Wed Jun 15 10:47:58 UTC 2005


Mitsubishi uses timing advance and reatrd to control idle speed. IIRC, they
advance timing a bit if the engine runs slower than the set idle speed und
retard it when it runs faster. 

> --- Urspr?ngliche Nachricht ---
> Von: Mark Higgins <nospam at higginstribe.com>
> An: diy_efi at diy-efi.org
> Betreff: Re: [Diy_efi] Timing Calculations
> Datum: Tue, 14 Jun 2005 21:25:22 -0400
> 
> 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
> 
> 

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