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

Green Car Congress

AUGUST 25, 2015

Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. The concept of an “effective octane number” calculates overall knock resistance of fuel in modern engines, including the effects of charge cooling. —Leone et al. In their study, Leone et al.

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Engine Fuel GM Ford 150
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GM and U Mich receive patent on plug-in series hybrid/extended range electric vehicle powertrain using multiple free piston linear alternator engines

Green Car Congress

NOVEMBER 25, 2012

GM Global Technology Operations LLC and the Regents of the University of Michigan recently were awarded a US patent (Nº 8,261,860) for a plug-in series hybrid or range-extended electric vehicle powertrain using multiple free piston linear alternator (FPLA) engines. Ethanol blended hydrocarbon fuels can include higher ethanol blends (e.g.

Extended Range 400
Extended Range Plug-in Engine GM 400
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