History of GenBoard/Manual/Config/InjectorOpening
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2008-08-05 06:06:47 . . . . MembersPage/MarcellGal [additive fueltrim]
2006-03-15 21:43:08 . . . . MembersPage/MarcellGal [boost is take care of. What does the NA/forced induction flag change ?]
2006-03-15 21:43:08 . . . . modemcable176.254-81-70.mc.videotron.ca
2006-03-15 21:43:08 . . . . modemcable176.254-81-70.mc.videotron.ca
2006-03-15 21:43:08 . . . . MembersPage/MarcellGal [added image that is needed and still not in the manual]
2005-03-26 12:24:49 . . . . MembersPage/MarcellGal [req_fuel calc in 2 lines]
2005-03-13 10:39:19 . . . . line-70-197.dial.freestart.hu [corrected manual references]

Changes by last author:

This image is needed for the injectoropening.
Injectoropening parameters:
Unfortunately it still does not show up in the manual.

* Unfortunately it still does not show up in the manual.

I just changed this to account for adding boost but Jorgen suggested that it's already taken care of. I'm not sure the right answer here as experimentally I found req_fuel=0x0d worked perfectly. As you can see the example screen cap yields a very similar value...
Boost is considered when the value looked up from VE table is multiplied by MAP. Also, the l[] lambda table will command a richer mixture for high MAP loadsites. So there is no need for NA/forced induction flag for the req_fuel calc. What does it do currenly ?


Injopen/additive fueltrim note

Unfortunately the 4 (or 5..8) injectors often show huge deviation at short pulsewidth (even if full-flowrate is matched within 1%), and (especially at 1.2 - 1.5msec pulsewidth or lower) the amount of injected fuel changes also depend on unaccountable factors (fuel pressure fluctuations and fuel temperature and mechanical bias).

To make it a bit better, there are arguments for adding additive fuel-trim.

(when multiplicative fuel trim is needed, the injector flowrates differ unacceptably or the setup is otherwise broken that should be fixed).

Reasonable options:

* additive fueltrim with above model, but reasonable hardcoded injopen values (is this needed?)

* additive fueltrim with simple model (simple pw += injopen)

* compatibility option: no additive fueltrim, but the injopen full model (as above), for easy upgrade (full low-load retune not needed)

The injopen parameters and the additive fueltrim can show up in separate dialogs (one or the other is always greyed out).