Well it's here...Lambda based Fuel Tables

[HDMD88]

Yes the new DBW touring bikes for 2010 will be replacing the AFR tables with Lambda based fuel tables. The new calibrations will be a 218 level.
The VE tables will be calibrated in MAP (kPa) not throttle positions any more...this I find very interesting.
You TTS owners....update your software and you can read all about the tuning changes with the Lambda based tables in the Tuning Guide...I'm sure you will find this very interesting.
The auto industry has been using this Lambda system for years and it will be more accurate fueling for the Harley also, but, it is a bit awkward getting your head wrapped around a whole different way of looking at fuel values....no more AFR. Example; Stoitch with AFR values is 14.68, this is something we are used to looking at however stoitch in Lambda is 1.000. Any value higher than 1.000 is leaner than stoitch and any value lower than 1.000 is richer.
With this new system we will be able to get a more controlled Closed Loop area (the bias voltage tables will be gone) To V-Tune your bike the fuel table will be set at .981 not 14.6 any more. The value of .981 equals 14.4 afr.
While in closed loop you can set less loaded cells with a leaner value and the loaded cells with a richer value....its really cool. The Lambda values will range from 1.020=14.97 to .967=14.20 in closed loop (I think) and to much richer values in open loop.
So you ask why the change...and that is a good question. With todays fuels (E10 and E85) stoitch changes....ie... the stoitch for gas as we know it is 14.68 however when using corn gas it takes more volume of fuel to produce the same amount of energy that gas does so E85 stoitch rating is 14.28. Here is where Lambda based values come in.....no matter what the fuel is stoitch is 1.000 = 14.68 for gas and 1.000 = 14.28 for corn gas. I believe we will be able to select a blend of fuel....Blend A or Blend B and not have to retune for these different volumes.
There is a lot to this Lambda stuff and knowing it was coming I did some research on it through the net last year so I'm ready....how about you guys? .....get to reading....lol
Doc

[baggersport]

Originally Posted by HDMD88

Yes the new DBW touring bikes for 2010 will be replacing the AFR tables with Lambda based fuel tables.

I'm ready....how about you guys? .....get to reading....lol
Doc

Yeah....no issues here. What's it going to mean for the AFR tuning guys?





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[route66paul]

What about those of us that have 04 and earlier? will this effect us?

[HDMD88]

Originally Posted by route66paul

What about those of us that have 04 and earlier? will this effect us?

No Paul, only the new DBW 2010 touring bikes, the 09 touring bikes have the option of 205 or 218 calibration levels. The 218 cals are the Lambda based Values.
Doc

[r440]

so for my 07 this means nothing?

[HDMD88]

Originally Posted by r440

so for my 07 this means nothing?

That is correct...this means nothing for any bikes older than 2010 touring models.

[Geezer-Glide]

What about us with carbuerators???

[baggersport]

....and notice the location of the O2 (lambda)sensors........I just looked at a RG, both sensors...side by side...at the collector.





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[bbrowncods]

What are the axis' for the Lambda tables? (I assume RPM, and either throttle or MAP)

Do the new O2 sensors operate as wideband or narrow? If the Lambda tables go across the the whole operating range of the engine it would seem to me that they would need to be able to read as wideband. But they may still be like the earlier models and just be mapped when outside the narrow range around stoichiometric.

[HDMD88]

Originally Posted by bbrowncods

What are the axis' for the Lambda tables? (I assume RPM, and either throttle or MAP)

Do the new O2 sensors operate as wideband or narrow? If the Lambda tables go across the the whole operating range of the engine it would seem to me that they would need to be able to read as wideband. But they may still be like the earlier models and just be mapped when outside the narrow range around stoichiometric.

There is no need for a wide band 02 sensor in a Harley...matter of fact they are too slow compared to a narrow band switching device.
The ECM does not read AFR or Lambda it reads voltages...the wide band sensor does not put out a voltage that the Delphi can interpert.
I made a thread in this section on the new Mini 02 sensors....check it out

[Paul Goodfield]

Originally Posted by HDMD88

No Paul, only the new DBW 2010 touring bikes, the 09 touring bikes have the option of 205 or 218 calibration levels. The 218 cals are the Lambda based Values.
Doc

Hey, I updated the software but cannot seem to find any 218 level cals.Is it because they are not out yet?

Paul

[HDMD88]

Originally Posted by Paul Goodfield

Hey, I updated the software but cannot seem to find any 218 level cals.Is it because they are not out yet?

Paul

They will be out in a week or two at the latest, they will be on the updater when they are ready.
Doc

[Paul Goodfield]

Originally Posted by HDMD88

They will be out in a week or two at the latest, they will be on the updater when they are ready.
Doc

So, am I right in assuming that these Lamda maps will apply to the 09 street glide. I just want to make sure.

paul

[HDMD88]

Originally Posted by Paul Goodfield

So, am I right in assuming that these Lamda maps will apply to the 09 street glide. I just want to make sure.

paul

The 09 Lambda calibrations will be a 218 file, the 2010 Lambda calibrations will be a level 009 file.
Doc

[Paul Goodfield]

Originally Posted by HDMD88

The 09 Lambda calibrations will be a 218 file, the 2010 Lambda calibrations will be a level 009 file.
Doc

Thanks doc. I'm looking forward to playing with these. It seems to make alot more sense in the aspect of basing calculations on the actual (or closer anyway) stoich given the fuels we are using.

paul