Audi 200 mc2 residual fuel pressure

[Robert Myers]

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OOOOps! "releases oxygen"???? No way, Jose!

The oxygen in oxygenated fuel has already done its damage as far as 
oxidizing something else is concerned. The ethanol (the usual 
"oxygenated fuel" added to petrol) serves mainly to reduce the 
average energy content of the fuel which reduces the tendency for the 
engine to knock while using poorer quality (read "cheaper") fuel. 
This allows the petroleum companies to utilize lower quality fuels in 
its products. It also provides a huge subsidy for large corn 
producers in some of the red states.

Profit margins, anybody?

Bob



At 08:51 AM 7/7/2009, Joshua Van Tol wrote:

>Just a technical point. Oxygenated does not = pre-burnt. It just means that
>the fuel has compounds in it that, when the fuel is burnt, releases oxygen,
>which helps ensure complete combustion. It does, however, reduce the energy
>content of the fuel, and depending on the oxygenate, can cause other
>problems.