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

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RVPs (predicted DVPE) of single- and dual-alcohol blends in gasoline with different relative proportions of ethanol and 1-butanol. Among the findings of the study: The RVP of the base gasoline was higher than that of the C 1 -C 4 alcohols.

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

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A study by engineers from Mahle Powertrain Ltd and BP found strong synergy between spark ignition (SI) engine downsizing and fuel containing low-to-moderate amounts of alcohol, including ethanol and butanol. When alcohol was added to the blend, fuel consumption over the drive cycle increased in direct proportion to the reduction in calorific value of the fuel. The addition of alcohol did not improve excess air tolerance.

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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

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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. biodiesel), a renewable diesel, a Fischer-Tropsch-derived fuel, a gasoline-diesel blend, a naphtha, other fuels derived from petroleum or non-petroleum feed stocks, and any combination or blend.

GM and U Mich receive patent on plug-in series hybrid/extended range electric vehicle powertrain using multiple free piston linear alternator engines

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Fuels can include gasoline blends, and alcohol blended hydrocarbon fuel grades. Ethanol blended hydrocarbon fuels can include higher ethanol blends (e.g. The GM/U Mich patent envisages using multiple free-piston engines (240A through 240D in the patent drawing). Click to enlarge.

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

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Given equivalent deployment of butanols and ethanol, the results suggest emissions of unburned alcohols would decrease, but carbonyl emissions would increase; some of these compounds have poorly understood health effects, they note.

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

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The preflame reactions are a strong function of temperature, so evaporative cooling from the fuel can also play a significant role, which is particularly important for fuels containing alcohol.

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

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Vulcanol is fuel-grade methanol, a clean burning, high-octane fuel that can be blended with gasoline for automobiles and used in the production of biodiesel or fuel ethers (DME, MTBE, OME etc.). Because of China’s coal reserves, the country has viewed methanol as a viable alternative for gasoline; methanol and methanol-blended gasoline are used in more than 20 provinces. Zhejiang Geely Holding Group (Geely Group) will invest a total of US$45.5

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

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The growth in hydrous ethanol, which uses a blend of 94-95% ethanol to 5-6% water, rapidly increased during the 1980s, with consumption peaking in 1989. Although it previously used a hydrous ethanol blend, Brazil shifted toward the aforementioned anhydrous ethanol, which is used in a ratio of ethanol to gasoline of 20-24:80-76. Named flex-fuel vehicles (FFVs), these automobiles run on gasoline, ethanol, or any blend of the two. by Brian J. Donovan, CEO Renergie, Inc.