Injector control

[Ludis Langens]

"Bruce Plecan" <nacelp at bright.net> wrote:
> >One particular ECM and calibration increases narrow pulse widths using
> >this table (1 unit is 1/65517 seconds):
> >
> >  1 unit -> 16 units
> >  16     -> 31        * would this mean anything less than 16 is shown 
>                                   as 31
> >  32     -> 47        *>31, but <47 shown as 47?
> >  48     -> 58                         .088*
> >  64     -> 72                         1.09*
> >  80     -> 86                         1.31*
> >  96     -> 101                       1.54*
> >  112    -> 115                      1.75*
> >  128    -> 130                      1.98*
> >  144    -> 144           about 2.2* msec
>
> * stuff I added
> These would be the injector on times we could expect to see?.

If the maps specified an injector on time of 16 units, the ECM would
turn on the driver for 31 units.*  The ALDL would be reporting just 16
units.  If the maps said 32 units, then the injector would run for 47. 
If the maps said 48, then it would really be 58.

* Actually, an additional amount is added to all durations - to account
for the turn on/off times and battery voltage correction.

> What happens to the values between the steps you've shown?

Intermediate values get interpolated like most other tables based things
in the ECM.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/