HYDRATED ETHANOL AS A FUEL FOR A DI, CI ENGINE

Anhydrous and hydrated (190 proof) ethanol were used as fuels for a DDC two-cycle, DI, CI engine to evaluate performance and durability effects. The engine suffered no ill effects except for injector needle sticking, which caused a reduction in combustion efficiency and power. A catalytic converter was very effective in reducing HC and CO emissions from the engine. The water in the hydrated ethanol helped to reduce NOx, HC, and CO emissions. Replacing the injectors at the end of a 454-h test eliminated the injector sticking and restored engine power.