[Diy_efi] WB-O2 with gasoline, nitrous and methanol...

[Eck, Joel (Houston)]

>-"Oxygen introducted with fuel" - do you mean the nitrous, the oxygen=20
>component of methanol or both?

And don't forget the oxygenates added to gasoline in some areas

>-"partial pressures of combustion products" - methanol will either burn =
to=20
>H20 + C02 or not at all (ok maybe CO).  There doesnt seem to be any =
simpler=20
>alcohols it can oxidise into without undergoing more or less complete=20
>combustion.  How does this affect things?

but the ratios of H2O/CO2/CO are different when burning methanol =
compared to burning gasoline. the resultant pressure of each of the =
gases present in the exhaust is going to be different when burning =
different fuels (that what partial pressures is all about; measuring the =
pressure of each gas in a blend), and you also have to take into =
consideration the gases that are not directly involved in combustion, =
i.e., N2; and you're still going to have some formation of NOx as well.

>-So then am I correct in assuming its gonna be HELL to calibrate a =
WB-O2=20
>for a engine that is receiving a mixture of gasoline, methanol and =
nitrous?

I haven't done it, but, based on the document previously put forth, I =
would say most likely, unless you get data from someone who has =
successfully done it and tune to their data.

>6. Throw system back on car, hope nothing blows up.

Isn't this always the case with N20? :) I would think the nitrous =
vendors would have some info on mixtures of nitrous and methanol, i =
would think it would be a good starting point.

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