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Martin Lundkvist

CLL 'Auto Mode'

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Just updated from FM  4.8.8 to the latest 4.9.3 and finding that 'auto mode' for the Closed loop lambda was missing? Tried with 'Stoich mode wide band' but not working. I would like it to read from AFR target map again.  Do you got a idea what i´m doing wrong or have you change tit in the last firmware???

Martin

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Stoich Mode (wide Band) will reference to the AFR target table.

Increasing or decreasing to match the fuel to the target.

Assuming all conditions are met.

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Ok, but it does not work for me! All conditions are met, all numbers is the same as before the FW update. I have been using it for a pretty long time so I know how it works.

It just lean it out max % when I turn the CLL Stoich mode WB on, no referance to AFR target, no matter what numbers I put in the AFR target map...

Thanks

Martin

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Do you by chance happen to be running fuel pressure as an input to the ECU?

If so try it with the fuel pressure set up as a general pressure input.

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Sorry to dig this old post up - But does this mean that on a atom g4+ with cll enabled ( stoich mode ) it will access the afr/lambda target table and make fuel corrections in real time ?

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Hi Ken,

You didnt mention if you have a wideband or narrowband sensor connected.  If it is narrowband stoich mode the lambda target table will have no effect, it will just aim to dither around the set "dither voltage".  If you have a wideband sensor in stoich mode then the lambda target table will be used but this mode is still designed to oscillate the lambda either side of the target and not directly settle at the set point.  

In the Xtreme and above ECU's we have proper CLL "automode".

 

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