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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

Green Car Congress

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. The patent application covers blends of between 5% and 95% alcohol.

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

Green Car Congress

d) further provides for alcohol blends as follows: Special provisions for alcohol blends. (1) The 2007 flex-fuel Chevrolet Impala utilized in midlevel blends testing revealed a 15% increase in fuel efficiency using the Highway Fuel Economy Test (HWFET) for E20 in comparison with unleaded regular gasoline.