BLM Cells for $88

[Bob Valentine]

The INT causes the BLM to move up or down depending on how far off the
fueling is from the specified target. 

On startup, both the INT and BLM are at 128.   Once in CL, the INT
(might/will) start moving.  Once the INT goes above or below a specified
limit the BLM is moved up or down by 1 *and* the INT resets to 128.   

That's how I understand it to work.

-> Bob Valentine
-> bob at tecmark.com

At 08:08 PM 6/25/2001 -0700, you wrote:
<big snip>
>Integrator.  the way that I correlate this is that I have two moving values
>one w/in another.  the INT is in the BLM & the BLM is w/in this table.  if @
>X & Y I have an IOT of Z (trying to keep it VERY simple, I know there is
>more to it that that).  I check this to what I am commanding (14.7) & do
>some math I find that I have to reduce (or raise) the IOT by some value. I
>jack up the INT 1 number & check again.  if not close enough I do it again.
>& I keep going until the INT hits a magic number (modifiable, right?) that
>raises the BLM one number.  Now when I Multiply the BLM in it has a larger
>affect in IOT than the INT does so I get a larger change to the IOT by the
>changing of one BLM number compared to one INT number.  Assuming that the
>MAP & RPM stay @ that point for the length of time that it takes me to type
>this, I am going to jack up & down the INT & BLM until I get the commanded
>AFR.  if this (the VE) is TOO far off both the INT & BLM are going to hit a
>bottom (or top) & not be able to pull out any more IOT & the car is going to
>just run rich.
>
>Holly smokes, sorry again guys, I get going & before I know it I am off
>topic. I hope that I am not too far of base.
>
>BW
>
>
>
>
>-----Original Message-----
>From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
>Of rr
>Sent: Monday, June 25, 2001 6:06 PM
>To: gmecm at diy-efi.org
>Subject: Re: BLM Cells for $88
>
>
>
>At least some of the vehicles with 32 cells have 2 banks
>of sixteen. One bank for normal use, the other when CCP
>is active.
>
>It might just be pointing out that high number of BLM cells
>aren't really required?
>
>BobR.
>
>Squash wrote:
>
>> Doesn't the BLM account for loss of engine efficiency?  Maybe efficiency
>changes dramatically
>> enough at different cell boundaries that it warrants having different
>cells?  Why did GM love them
>> so much?  Some TBI truck 350's have 32 cells, some 4.  Why the difference
>on almost the same
>> engine?
>>
>> Squash
>>
>> --- Scot Sealander <Sealand at clarityconnect.com> wrote:
>> > "Gonyou, Jeremy (.)" wrote:
>> >
>> >
>> > > >> Any reason the V6 stuff should only have 3 cells?
>> > >
>> > > >Any reason that it should have more?   ;-)
>> > >
>> > > Tuning?
>> >
>> > The BLM is used for correction of errant fueling, not tuning.  Correct
>> > what's wrong first, then watch the BLM stay near the neutral value.
>> >
>> > Scot Sealander
>>
>> =====
>> Trains, Trucks, and EFI at http://www.trailrunners4x4.org/users/realsquash
>>
>
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