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NREL study probes emissions impact of butanol-gasoline blends in light-duty vehicles

Green Car Congress

In the study, published in the ACS journal Environmental Science & Technology , they splash-blended certification gasoline with alcohols to produce four blends: ethanol (16 vol%); n-butanol (17 vol%); i-butanol (21 vol%); and an i-butanol (12 vol%)/ethanol (7 vol%) mixture.

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Study quantifies impact of fuel composition on PM emissions from gasoline direct injection engines

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The GDI tailpipe particulates consist mainly of EC (elemental carbon), OM (organic matter) and small amounts of inorganic ions. 2014) “Novel Characterization of GDI Engine Exhaust for Gasoline and Mid-Level Gasoline-Alcohol Blends,” SAE Int. The mass percentage of EC in the total tailpipe PM increased as load increased.

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