Researchers find ethanol more efficient in higher blends
A study from the Energy & Environmental Research Center at the University of North Dakota found that higher ethanol blends resulted in better fuel economy than unleaded gasoline. The study tested eight different ethanol blends on a Ford Fusion, a Toyota Camry, a non-flex-fuel Chevrolet Impala, and a flex-fuel Chevrolet Impala. At the E30 level, the Toyota Camry and the Ford Fusion ran more miles per gallon than unleaded gasoline. The non-flex-fuel Chevrolet Impala ran more miles per gallon at E40 and at E20 on the flex-fuel vehicle.
In addition to fuel economy, the study also tested emissions and found that exhaust emission values for nonmethane organic gases, nitrogen oxides, and carbon monoxide met EPA standards for all vehicles tested except the flex-fuel Chevrolet Impala which exceed the nonmethane organic gases standard on E20 and regular gasoline.
The full report can be found here.
In addition to fuel economy, the study also tested emissions and found that exhaust emission values for nonmethane organic gases, nitrogen oxides, and carbon monoxide met EPA standards for all vehicles tested except the flex-fuel Chevrolet Impala which exceed the nonmethane organic gases standard on E20 and regular gasoline.
The full report can be found here.
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