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. A research team from Ford Motor Company and the University of Copenhagen has performed a systematic study of the vapor pressures of single and dual-blends of different alcohols with potential to be used as biofuels, including methanol; ethanol; 1- and 2-propanol; and 1-, 2-, i -, and t -butanol.

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

Green Car Congress

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. Among their findings was that for gasoline fuels, aggressively downsizing the engine and adopting homogeneous direct fuel injection enabled an improvement in fuel consumption of ~17% over the New European Drive Cycle compared to a naturally aspirated PFI unit.


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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. 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.

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

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Results of a study led by a team from the National Renewable Energy Laboratory on the impact of butanol-gasoline blends on light-duty vehicle emissions suggest that widespread deployment of n-butanol or i-butanol in the gasoline pool could result in changes to the estimated emissions of alcohols and carbonyls in the emissions inventory. Ethanol produced the highest unburned alcohol emissions of 1.38 Summary of significant emissions results from the fuel testing.

2013 204

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

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Researchers from Tsinghua University and Peking University have investigated the effects of fuel properties on particulate emissions gasoline direct injection engines (GDI). In the introduction to their paper, the Tsinghua/Peking team noted that in GDI operation, gasoline is injected into the cylinder during the intake stroke, leaving insufficient time for the gasoline to evaporate and to mix with air before ignition.

2015 150

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

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These top candidates, when blended with petroleum and used in a boosted spark ignition (BSI) engine, will offer environmental benefits and boost energy efficiency all while being available at a competitive price. These blendstocks are best-suited for light-duty (LD) gasoline BSI engines. The merit function determines potential improvements in engine efficiency, was used to evaluate the performance of candidate bio-blendstocks in blends up to 30%. Fusel alcohol mixture.

2019 184

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

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The 10 blendstocks include a variety of alcohols, an olefin, a furan mixture, and a ketone, with the alcohols and olefin exhibiting the fewest barriers to commercial adoption. At a 30% blend level, this equates to an 18% reduction in emissions for the finished fuel.

2020 222

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.

2012 316

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

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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. Fuels (other than alcohol) derived from biological materials (including pure biodiesel (B100)). P-Series (renewable, non-petroleum, liquid fuels that can substitute for gasoline).

2014 200

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. To achieve continued improvement in engine efficiency and CO 2 emissions, it is critical to quantify the roles of fuel octane rating and alcohol content. Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value.

2015 184

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

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Methanol-powered vehicles are one pillar of Geely Auto’s diversified new-energy strategy, which also encompasses ethanol, CNG, gasoline-electric hybrid, plug-in hybrid, pure-electric, and extended-range solutions. 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.). respectively after switching from gasoline to methanol.

2015 210

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

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In 1975, General Ernesto Geisel, then-president of Brazil, ordered the country’s gasoline supply mixed with 10% ethanol. The level was raised to 25% over the next five years, which was intended to maintain a constant Brazilian gasoline supply for an ever-increasing demand. The 1979 Iranian crisis and related oil price shock accelerated Brazil’s conversion of its gasoline supply and automobile fleet. addresses controls and prohibitions on gasoline volatility.

2009 258