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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 addition of alcohol did not improve excess air tolerance. Cairns et al. SAE 2009-01-0138). SAE 2009-01-0138 ).

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

Green Car Congress

compression ratio, extent of downsizing, etc.). 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 Will Work in the Real World?