Team from GM, Ford, FCA reviews how to calculate engine efficiency benefits of high octane fuels
Green Car Congress
AUGUST 25, 2015
The concept of an “effective octane number” calculates overall knock resistance of fuel in modern engines, including the effects of charge cooling. In all engines, including the existing on-road fleet, fuel with higher octane ratings can enable more advanced spark timing and combustion phasing under knock-limited conditions. Shelby, and William M.