Whatssa B/L cell?

David Cooley n5xmt at bellsouth.net
Wed Nov 3 16:19:31 GMT 1999


At 09:55 AM 11/3/1999 -0600, you wrote:
>I've got a rough idea, but could someone put it into layman (EE challenged)
>language?.
>   Why do some ecms have so many and some just 2?.
>Grumpy

The BL is the Block Learn or long term learned fuel correction.
Newer PCM's monitor the mixture and create corrections at many load levels 
on the engine, hence many B/L cells.  Older ones may have had only 2, one 
for idle and another for cruise.
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