Bioethanol Operation in a DI Diesel Engine with DEE Fumigation

Abstract

Engine experiments were conducted with bioethanol in a direct injection (DI) diesel engine with the help of an ignition improver by fumigation technique. The diethyl ether (DEE) was fumigated along with the air in the suction at four different flow rates of 60, 120, 180 and 240 g/h. The results were compared and found to be good agreement with diesel data. The overall heat release rate and useful work for the bioethanol and DEE operation was observed to be higher compared to that of diesel at full load. There was a simultaneous reduction of brake specific nitric oxide (BSNO) and smoke emission with these fuels at every load. But, the brake specific carbon monoxide (BSCO) and brake specific hydrocarbon (BSHC) emission were found to be increased with the higher flow rates of DEE compared to diesel at full load.