Pulsewidths & injectors & coils

[dzorde at erggroup.com]

On my Wolf 3D you set a max injector pulse width, it looks like they use a
256 step resolution for the then set max pulse width, ie for a max 10mS
pulse width your adjustments are in increments of roughly 0.04mS.  And that
seems to work just fine.

Dan  dzorde at erggroup.com


>Date: Tue, 12 Sep 2000 17:47:59 +1200
>From: "Nicholas Parker" <nrparker at ihug.co.nz>
>Subject: Pulsewidths & injectors & coils  ;-)
>
>Hello List,
>What are ballpark figures for the resolution (in time) you need for
>effective injector control?  What have people discovered empirically?  Is
>8us stupidly small? Is 64us too course? My injectors are 365cc/min rating
>(not sure if that 100% duty for 1 minute?) What is the usually way of
>specifying flow capacity?
>More questions I have regarding coils.
>What is the normal method for coil control..I understand turning it off
>makes a spark, it is essentially like an inductor to control.  Can the
coil
>run say all the time, (with a current limit method - say resistor ballast)
>and only be turned off for say a couple of ms whenever you want a spark?
>
>Thank you, Nick Parker.



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