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

Green Car Congress

MARCH 27, 2020

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. Of the fuel properties investigated, these six were found to have the most impact on engine efficiency and emissions.

Alcohol Blend 243
Alcohol Blend Fuel Engine Fuel Economy 243
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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

A higher compression ratio can be used if an engine will operate primarily at light loads, such that degraded efficiency at high loads is more than offset by improved efficiency at light loads. Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. —Leone et al.

Engine 150
Engine Fuel GM Ford 150
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