DOE: trends in engine compression ratio and gasoline octane are diverging

Green Car Congress
By mmillikinAug 30, 2016, 6:00 am113 pts
Starting in the 1970s, the average compression ratio of engines—which up to that period had evolved pari passu with octane ratings—began diverging from the octane trend due to advanced engine design and controls, as illustrated by data compiled by the US Department of Energy (DOE). From the 1920s to the…

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DOE: trends in engine compression ratio and gasoline octane are diverging

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