EXPANDING THE OPERATING ENVELOPE OF ADVANCED COMBUSTION ENGINES USING FUEL-ALCOHOL BLENDS

摘要

The invention provides methods that expand the operating envelope of advanced combustion engines during operation in an advanced combustion mode by supplying an engine cylinder during operation in the advanced combustion mode with fuel-alcohol blends, e.g. gasoline-alcohol blends. In methods of the invention, fuel-alcohol blends combust efficiently over a wide range of engine loads, and the need for EGR, WT, NVO, rebreathing, or multiple fuel injection is either reduced or eliminated.