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SteveV

Optimum Blends

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We all know we can see higher power output from E85, much of this comes from the cooling effect as well as octane.  One has to ask, how do we become more competitive in the market place with ethanol.  There is value for E30 today but the full benifit comes if OEM's plan for it.  E30 can offer the same mileage but now we can also compare E30 to better then Premium performance.

 

This attachment is not saying we stop asking for FFV's that can operate up to E85 blends but we need to offer the OEM engineers a fuel they can plan for, both for emissions and efficiency reasons.  We also need to collectively put forth a strategy that can change the policies at EPA and DOE.

 

Welcome any feedback.

393_.pdf

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Well, they already design engines that run fine on Regular that make more power and MPG on 91. If they built GDI engines that were basically detuned for Premium Gasoline and could safely run E85 with less intake valve overlap and no Knock retard then we might have something.

 

Anything less than 30% Ethanol is basically premium grade Gasoline with an oxygenate. E50 is probably a good target for FFVs but they already build Gasoline engines that are built with too much compression for Regular Gasoline so they lose top end power from Knock retard but they get all of the efficiency benefits of high compression at part load. These engine will run better on a mid blend of Ethanol but the engine will still be the limitation not the fuel.

 

There are plenty of technical articles on increasing engine efficiency for fuel economy or power . They just don't deal with Ethanol at all though. Engines don't care about the fuel only the octane or knock resistance matters, everything else is the ECU's job  :laugh:.

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Just skimmed the PDF. How can the testers not be "called" on their using poorer quality gasoline as the ethanol percent is increased? Seems like consistent gasoline is the only way to test and how they explain not doing this would be interesting. I really believe that I'm getting the same mileage on E30 as E10, so even if it cost the same it wouldn't make any difference.

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