Chevrolet Corvette Stingray C7 Forum - View Single Post

*DGthe3* · 02-23-2009, 04:17 PM

Let me know if I'm way out in left field on this:

Diesel burns very hot, gasoline burns hot, ethanol burns sorta hot. NOx requires high temperatures to form. In diesels, this is unavoidable. In gasoline engines, there is a NOx spike at the perfect stoich ratio. Traditionally, engines run rich to avoid this. Moderate amounts of cooler burning ethanol will offset the temperature enough to prevent excess NOx. This allows for less fuel to be used (since it no longer needs excess fuel).

Does this make sense to guys 'in the know'?

02-23-2009, 04:17 PM	#19
DGthe3 Moderator.ca Drives: 05 Grand Am GT Join Date: Jul 2007 Location: Niagara, Canada Posts: 25,366	Let me know if I'm way out in left field on this: Diesel burns very hot, gasoline burns hot, ethanol burns sorta hot. NOx requires high temperatures to form. In diesels, this is unavoidable. In gasoline engines, there is a NOx spike at the perfect stoich ratio. Traditionally, engines run rich to avoid this. Moderate amounts of cooler burning ethanol will offset the temperature enough to prevent excess NOx. This allows for less fuel to be used (since it no longer needs excess fuel). Does this make sense to guys 'in the know'? __________________ Note, if I've gotten any facts wrong in the above, just ignore any points I made with them __________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!! __________________ Camaro Fest sub-forum