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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. The team presented a paper on their work at the recent SAE 2009 World Congress in Detroit. Cairns et al. SAE 2009-01-0138).

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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

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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. While the vapor pressure is independent of the vapor/ liquid ratio for a pure compound, this is not true for mixtures, such as gasoline.

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

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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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CRI is presenting at the 4 th Conference on CO 2 as Feedstock for Fuels, Chemistry and Polymers , being held at the end of September in Essen, Germany. The process is certified by SGS Germany according to the ISCC Plus system, based on standard ISCC EU methodology for calculation of GHG emission in the product lifecycle. Methanol in China.

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

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d) further provides for alcohol blends as follows: Special provisions for alcohol blends. (1) The Effect of E100 Water Content on High Load Performance of a Spray Guide Direct Injection Boosted Engine (presentation). As used in this section and Sec. 40 CFR § 80.27(d) Brewster, S.C., SAE paper # 2007-01-2648.