Quote:
Originally Posted by cRiPpLe_rOoStEr
There were dedicated-ethanol cars in Brazil, yet they weren't so extremely tuned to take the most benefit from ethanol.
NOx and PM have increased on spark-ignition engines precisely due to direct injection becoming more widespread.
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My point being, I wonder what efficiency is possible if a major automotive manufacturer went all in on E85. 110 octane is quite good if an engine is tuned for it.
Does ethanol produce NOx like petrol? I'm not familiar with the mechanism that causes it in the first place. Most of air is nitrogen and oxygen. Is it simply heat?