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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.

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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. reduced maximum rates of pressure increase during HTHR.

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

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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. Cairns et al. SAE 2009-01-0138). Key Properties of the Test Fuels. Cairns et al.

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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). Higher aromatics in gasoline resulted in much higher PM (mass), PN (particle number) and PAHs emissions, with higher toxicity to human health. emissions in 2014.

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

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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%. The blendstocks were identified using a fuel property basis using the BSI merit function.

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

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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 Fuels Should We Make? What Will Work in the Real World?

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

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Projects may include, but are not limited to, workshops and in-person fuel-specific safety and technical training; service training and/or certification for service technicians, inspectors, and equipment operators; curriculum development and resources for utilization at community colleges, technical schools, etc.; Coal-derived liquid fuels.