Use of MAP in FI calcs

[Bruce Plecan]

Arrgh,
What is it?

Baro-Map=Vac  (?)
used in a bunch of EGR stuff, if memory serves correctly
Bruce






     Baro ? Weather correction , ratio of atmospheric pressure in front of
throttle valves , versus
    percentage of pressure behind throttle valves, make appropriate fuel
corrections as part of
   adaptive learning process on daily startup / restart process. Don't have
a clue how this is
    connected with Exh scavenging other than normal weather tuning changes
by default process
    of atmosphere in a state of flux. Everyone's doing the best they can to
compensate. How much
    of the atmosphere is entering the inlet manifold  seems the thinking
behind it all , each start / run
    cycle.
    Len

>Ok, so baro is either sampled at power up or in some cases continuously
>sampled.  I agree with Ludis that what is needed particularly in the mass
>airflow calcs is the pressure inside the manifold, not outside.  So.. is
>the only purpose for baro then the correction for the effect on exhaust
>scavenging that someone mentioned? I would think that a few kPa variation
>in baro would have minimal effect on scavenging.
>
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