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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. A Study of Gasoline-Alcohol Blended Fuels in an Advanced Turbocharged DISI Engine. (

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

Green Car Congress

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?