E-85 Help

[vatman02]

i have just switched over to E-85 but my maps seem to be way off can someone help me figure out whats wrong. at part throttle my lm1 shows 8.9-10.0 so this corresponds to the proper afr but my auto ve map shows a correction 1.44. im am doing this set up for auto ve, so the ve table is commanding the proper fueling, at least in this area. it seems the map still thinks stoich is 14.7.

[5.7ute]

Have you reset the lm-1 to suit E85 with the programmer?
Also dont forget you do not want to command stoich with a COS or trimming will occur.

[vatman02]

first off the lm1 said ethenol lambda 9.0. so that was off it should 9.7-9.8 so i fixed that, then i noticed it was set to output in lambda. i think this is what caused the problem, so i changed it to output in afr. i cant check it now i have to pack, i'm heading out of town for work, i'll be back on friday and try again. i thought that commanding stoich was no longer a problem. thanks for the info.

[vatman02]

so i cant seem to get the scaanner to read the correct afr. i have been tring to create a custom pid but i am getting confused. this is what i have. i'm not sure what to do with the +11. if i have 3.92 volts at stoich 9.7:1 afr and divide them i get 2.47, but this only works for stoich nothing else.

# Innovate LM-1 WBO2
# ========================
*CLC-00-928
V 0.0 5.0 .1 "{EXT.AD1}"
AFR 5.0 11.0 .1 "{EXT.AD1}+11"
*CLC-00-929
factor 0.0 2.0 .1 "{CALC.AFR_LM11.AFR}/{GM.AFR}"
*CLC-00-930
V 0.0 5.0 .1 "{EXT.AD2}"
AFR 5.0 11.0 .1 "{EXT.AD2}+11"
*CLC-00-931
factor 0.0 2.0 .1 "{CALC.AFR_LM12.AFR}/{GM.AFR}"

[dfe1]

I think your PID needs some work. From what I understand, every LM-1 is a bit different. With mine, readings in the scan program are never anywhere near being correct unless I change the PID to:
*CLC-00-928
V 0.0 5.0 .1 "{EXT.AD1}"
AFR 10.0 20.0 .1 "({EXT.AD1}*1.9936)+9.9832"
*CLC-00-929
factor 0.0 2.0 .1 "{CALC.AFR_LM11.AFR}/{GM.AFR}"
*CLC-00-930
V 0.0 5.0 .1 "{EXT.AD2}"
AFR 10.0 20.0 .1 "({EXT.AD1}*1.9936)+9.9832"
*CLC-00-931
factor 0.0 2.0 .1 "{CALC.AFR_LM12.AFR}/{GM.AFR}"

This is with standard-type pump gas. With E-85, the numbers will obviously be a lot different, but the point is, I think you'll have to experiment-- what works for someone else may not work for you. If the numbers in your LM-1's window appear to be correct, experiment with the factors in the PID until the scan data matches.

[vatman02]

thats what i was afraid of. not real good at the whole trial and error thing. but i'll give it a try and see what i come up with. thanks

[5.7ute]

The only way you can really fix this issue is to start fresh with EQ Ratio instead of AFR. This way once the pid is right you will be able to use it on all fuels.
Try this.
Program the lm-1 to output this .
1.25 lamda at 0 volts.
0.75 lamda at 5 volts.
Make a calculated pid that will use the EQ values.
CALC.LM1_EQ (EXT.ADn+7.5)/10
Make a new Ben pid using {CALC.LM1_EQ}/{CALC.EQ}
Once you have made adjustments for ground offsets you should be good to go.

[vatman02]

thanx for the help man, i'm out of town for work again so i can't hook this up and try it, but does this look right ? also what do you mean by ground offset


# ================================================== ============================
# File details
# ------------
#
# This section defines various details about the file format.

*FILE

#Parameter Value Description
#---------- ---------------- ---------------------------------------------------
VERSION 7.1.1 File version
DECSEP . Decimal separator used in this file



# ================================================== ============================
# Units
# -------------------
# See sae_generic.txt for more information on the *UNITS section

*UNITS

#Code System Abbr Description
#-------- ---------- -------- -------------------------------------------------------------

# ================================================== ============================
# Add slot definitions here
# --------------------------------
# See sae_generic.txt for more information on "SLOT" formats
#
#Units Low High Fmt Expression
#------------ ------------- ------------- ---- --------------------------------------------------------------


CLC-00-983
V 0.00 5.00 .1 "{EXT.AD1}"
LAMBDA 1.25 0.75 .1 "{CALC.LM1_EQ(EXT.AD1+7.5)}/10"
CLC-00-984
factor 0.00 2.0 .3 "{CALC.LM1_EQ}/{CALC.EQ}"


# ================================================== ============================
*PRN - Parameter Reference Numbers
# --------------------------------
# See sae_generic.txt for more information on the *PRN section
#
#Code PRN SLOT Units System Description
#------------------------- ---- ------------ ---------------- ----------------

------------------------------------------
CALC.LM1_EQ F083 CLC-00-983 "LAMBDA,V" o2-wide "WIDE BAND LM1 EQ"
CALC.BEN_LM1_EQ F084 CLC-00-984 "factor" o2-wide "BASE EFFICIENCY NUMERATOR 1"

[vatman02]

something is wrong with it. it keeps generating an error

[5.7ute]

Sorry my fault. You will need to also make the pid CALC.EQ. 9.8/{GM.AFR}
Or if available on your system use the pid GM.EQUIVRATIO instead of CALC.EQ.

PM sent.