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

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Summary of significant emissions results from the fuel testing. 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. Click to enlarge.

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

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For the past four years, the Co-Optimization of Fuels & Engines (Co-Optima) National Laboratory consortium has focused research efforts primarily on turbocharged (boosted) spark-ignition (SI) engines for light-duty vehicles. The report highlights researchers’ answers to three vital questions: What fuels do engines want?

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

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A new Co-Optimization of Fuels & Engines (Co-Optima) report describes the top ten biofuel-derived blendstock candidates. 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.

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DOE Co-Optima researchers identify 6 high-potential blendstocks

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While fuel economy ratings of today’s cars significantly outstrip those of just a decade ago, cost-effective efficiency improvements remain limited by existing engine designs and fuel formulas. It represents the most detailed correlation to date of fuel properties and engine efficiency. Source: DOE.

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

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A team of engineers from GM Powertrain, Ford and FCA have published a detailed review of how to estimate the engine efficiency benefits of higher octane fuel—e.g., fuel with higher ethanol content—for part- and full-load operation for different engine types and fuel assumptions. —Leone et al.

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

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CRI, founded in 2006 in Reykjavik, Iceland, is developing technology to produce renewable methanol from clean energy and recycled CO 2 emissions. The companies say they a vision for a larger role for methanol as a clean and sustainable fuel worldwide. —Li Shufu, Chairman of Geely Group. Earlier post.). Earlier post.)

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