DIY-WB Output Voltage Scaling

[rr]

RE: DIY-WB output: All taken care of. The DIY-WB Vout vs AFR is also
for gasoline with stoich at 14.7:1.

BobR.


Glenn & Debbie Woodhouse wrote:

> A couple of questions for Peter and the group.  Peter, the display kit you
> recommend sounds perfect for our application.  I looked at the Jaycar info
> and it does not reference the supply of source code.  Did you buy one or
> talk to Jaycar to confirm this?
>
> Secondly, to the DIY-WB group, I have the transfer function for the NTK
> TC-6110 series UEGO controller box.  This transfer function reflects the
> $600 NTK sensor which many of us feel is effectively the same sensor as the
> Honda (DIY-WB) part.  The NTK transfer function voltages run exactly 0.5
> volts greater than the DIY-WB from A/F 10 through stoich, and are close
> enough for tuning purposes in the lean range taking the 0.5 V offset into
> account up to A/F 20.66 (within 0.3 A/F).  My question to the DIY-WB
> designers is, is their a voltage offset or bias in the design that would
> produce the 0.5 volt shift?  Has anyone played with the NTK box and
> determined if it produces a 0.5 V bias? Or, perhaps the high dollar NTK
> sensor (and/or controller box) actually produce ion pump output currents and
> resulting voltage conversions that are different than the Honda sensor
> (and/or DIY-WB controller).
>
> Thanks, Glenn.
>
> ------------------------------

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