Citace:
PS lambse means stft?
Citace:
Yes, in meaning yes.
Only there is a different in number expression.
STFT is usually in [%], so 0% means no triming, -10% means -10% of fuel in mixing etc.
LAMBSE is expressed like lambda number, so
1=stoich condition,
<1 means richer cond. (more fuel than stoich),
>1 means leaner (=more air)
Citace:
... Once you take some graph of LAMBSE (or STFT) ...
on engine in closed loop ...
LAMBSE goes higher and higher (= leaner and leaner) ...
LAMBSE starts go lower = against to richer and richer mixing ...
Tomin,
I'm observing my vehicle ('2007 Mk4 Mondeo, 2.0 Duratec-HE AOBA) with ForDiag, which provides only LAMBSE and KAMRF values ("centre" at 1.0).
Most of the available reference, troubleshooting and monitoring information online refers only to STFT and LTFT values ("centre" at 0%).
In order to understand, compare and share my vehicle's readings, I would like to know if there a direct relation between ForDiag's LAMBSE/KAMRF values and other devices' STFT/LTFT values.
1) May I simply express my ForDiag's LAMBSE readings into % STFT, as shown below?
ForDiag's LAMBSE 1.07 = other devices' STFT "negative 7%" (LAMBSE 1.07 = STFT -7%): ECU sees too rich => ECU desires to make leaner => ECU commands -7% of fuel in mixing;
ForDiag's LAMBSE 0.95 = other devices' STFT "positive 5%" (LAMBSE 0.95 = STFT +5%): ECU sees too lean => ECU desires to make richer => ECU commands +5% of fuel in mixing.
Correct?
2) KAMRF.
ForDiag's KAMRF 0.90 = other devices' LTFT "positive 10%" (KAMRF 0.90 = LTFT +10%): ECU sees too lean => ECU desires to make richer => ECU commands +10%.
Correct?
3) KAM adaptations map.
For example, 12.5 % Load 1000rpm cell,
green -10.0%. What is actually happening with this cell?
ECU sees ~10% too rich =>
ECU desires to make leaner =>
ECU commands -10% of fuel in mixing; or
ECU sees ~10% too lean => ECU desires to make richer => ECU commands +10% of fuel in mixing?
Thank you in advance for response.