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Study of Vapor Pressures of Gasoline-Alcohol Blends Finds That Dual-Alcohol Blends Can Result in RVPs Identical to That of Gasoline

Green Car Congress

RVPs (predicted DVPE) of single- and dual-alcohol blends in gasoline with different relative proportions of ethanol and 1-butanol. Credit: ACS, Andersen et al. Click to enlarge.

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ExxonMobil Research files patent application on methods for expanding HCCI and other advanced combustion modes load range with fuel-alcohol blends

Green Car Congress

ExxonMobil Research and Engineering Company has filed a US patent application (# 20100326387 , published 30 December 2010) on methods using a wide range of fuel-alcohol blends to expand the operating envelope of engines operating in advanced combustion modes.

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Study Finds Strong Synergy Between Spark Ignition Engine Downsizing and Low-to-Moderate Alcohol Blend Fuels

Green Car Congress

Future work shall be concerned with the combustion, performance and emissions of alcohol fuels across the speed-load map of an aggressively downsized, state-of-the-art, twin-turbocharged three cylinder SI engine. A Study of Gasoline-Alcohol Blended Fuels in an Advanced Turbocharged DISI Engine. ( Cairns et al. SAE 2009-01-0138).

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

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This fuel’s exhaust emissions contained the lowest total oxygenates among the alcohol blends and the lowest NMOG of all fuels tested. McCormick (2013) “Impact of Higher Alcohols Blended in Gasoline on Light-Duty Vehicle Exhaust Emissions,” Environmental Science & Technology doi: 10.1021/es402793p.

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DOE Co-Optima report identifies top ten bio-blendstocks for efficiency in boosted SI engines

Green Car Congress

Six of these blendstocks had the fewest significant practical barriers to adoption and use: di-isobutylene; ethanol; isobutanol; n-propanol; isopropanol; and a fusel alcohol blend. All the top-performing blendstocks showed potential to be produced at a competitive cost.

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DOE to award up to $4.5M to increase acceptance and deployment of alt fuel vehicles

Green Car Congress

The alternative fuel types to be addressed under this FOA are specified by the Energy Policy Act of 1992 and are: Methanol, ethanol, and other alcohols. Blends of 85% or more of alcohol with gasoline. Natural gas and liquid fuels domestically produced from natural gas. Liquefied petroleum gas (propane).

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Co-Optima releases capstone report on first 4 years of work

Green Car Congress

Of these 10 blendstocks, six were assessed to have the fewest significant practical barriers to adoption which include alcohols and an olefine (alkene): di-isobutylene, ethanol, a fusel alcohol blend, isobutanol, n-propanol, and isopropanol. What Will Work in the Real World?

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DOE Co-Optima researchers identify 6 high-potential blendstocks

Green Car Congress

Three years after embarking upon rigorous evaluation of a pool of more than 400 candidates ( earlier post ), researchers with the US Department of Energy (DOE) Co-Optimization of Fuels & Engines (Co-Optima) initiative have identified the six blendstocks—di-isobutylene, ethanol, fusel alcohol blend, isobutanol, isopropanol, and n-propanol—that (..)

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DOE to award up to $4.5M to projects for alt fuel and advanced vehicle deployment

Green Car Congress

The Energy Policy Act of 1992 defined these fuels as alternative fuels: Methanol, ethanol, and other alcohols. Blends of 85% or more of alcohol with gasoline. Natural gas and liquid fuels domestically produced from natural gas. Liquefied petroleum gas (propane). Coal-derived liquid fuels.

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

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2014) “Novel Characterization of GDI Engine Exhaust for Gasoline and Mid-Level Gasoline-Alcohol Blends,” SAE Int. 2015.11.019 Storey, J., Szybist, J., Fuels Lubr. 7(2):571-579 doi: 10.4271/2014-01-1606.

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Team from GM, Ford, FCA reviews how to calculate engine efficiency benefits of high octane fuels

Green Car Congress

Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. Higher octane fuel improves the efficiency of today’s engines through reduced spark retard (from optimum) at high loads, and could enable even higher efficiency if engines were optimized for higher-octane fuel.

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Geely invests in Carbon Recycling Intl.; vehicles fueled by methanol from CO2, water and renewable energy

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2015) “Experimental Investigation of a DISI Production Engine Fuelled with Methanol, Ethanol, Butanol and ISO-Stoichiometric Alcohol Blends,” SAE Technical Paper 2015-01-0768 doi: 10.4271/2015-01-0768. , Ickes, A., Wallner, T., and Verhelst, S. 2014.07.002.

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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

d) further provides for alcohol blends as follows: Special provisions for alcohol blends. (1) As used in this section and Sec. 80.27, “high ozone season” means the period from June 1 to September 15 of any calendar year and “regulatory control period” means the period from May 1 to September 15 of any calendar year.

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