EBS has the potential to be a technology that could deliver diesel-type performance at a more affordable price.

Ford says its new line of turbocharged EcoBoost direct-injection gasoline engines will deliver up to 20 percent better fuel economy in its cars and trucks than conventional engines, but it isn’t expected to stop looking for efficiency gains there.

Ethanol boosting starts with a small turbocharged engine with separate gasoline and ethanol fuel injectors for each cylinder. The gasoline system mixes fuel and air in the motor’s intake manifold using port injection. The second system injects small amounts of ethanol directly into the combustion chamber to control premature detonation, or knock, that results from the high temperature and pressure of a turbocharged engine. The ethanol prevents knock by cooling the air/fuel mixture until the engine is ready for combustion.

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