Oxygenated Gasoline: Still Needed or Useful with Modern Engines?

[Revving2Redline]

I think the only use is to support local farmers more than anything. Maybe a little less emissions since ethanol is supposed to burn cleaner?

Probably about a quarter more emissions from all the energy and fuel used to process it. Sounds like a negative energy just like the wind turbines

 

[Revving2Redline]

Can't we just all drive geo metro, Honda CRX HF, and Nissan Sentra/200SX? Long live the manual transmission cars.

 

[Rmay635703]

EPA standards for vehicles is measured in grams per mile.

For Tier 3 (phase in started in 2017, full effect by 2025) a manufacturers fleet average for NOx+NMOG is 0.03g/mi with Bin limits starting at 0 and going up to Bin 160 with 0.16g/mi. CO, PM, and HCHO do not have fleet average mandates.

Tier 2 (2004-2016) was a big higher, NOx across the fleet must be 0.07g/mi, with the bins ranging from 0 to .20g/mi, NMOG was separate at 0 to 0.125g/mi with no fleet average for it or the rest.

The emissions the epa uses for calculating the fleet and the real consumer facing emissions standards in smog are different beasts.

Generally fleet emissions and mpg are calculated off very warm gentle cycles that have very little reflection on the real world emissions.

Someone I knew had a nearly new car that was short tripped fail emissions in the winter. In Wisconsin you never get emissions checked in the winter and always make sure the car was driven a long distance before getting smogged.

U.S. Emission Tests Are Unrealistic, But European Testing Is Far Worse

European testing standards allow greater opportunities for cheating.

www.greencarreports.com

Probably about a quarter more emissions from all the energy and fuel used to process it. Sounds like a negative energy just like the wind turbines

Except that hundreds of products are made from ethanol cobyproducts that historically required costly energy intensive independent processing .

Everything from corn oil, to co2/dry ice, to mineral rich protein feed are “waste byproducts “ and effectively “free”
So long as these are produced single stream alongside the ethanol they require a fraction of the energy and materials to make compared to the “old way” of producing them separately.