Effect of 35% water in diesel emulsion fuel and AFR enriched combustion on the combustion and emissions characteristics

Abstract

This study uses an emulsion fuel with a mixture of 35% water and 65% diesel on a Diamond DI 800 diesel engine with a constant engine speed of 1500 rpm. This study will be varied AFR 0,013 kg/s, 0,018 kg/s, 0,023 kg/s, 0.028 kg/s and variations in engine load starting from 1000 W, 2500 W, and 4000 W (respectively). The results of the emulsion study will be compared to diesel fuel under standard engine conditions. The results showed that enriched AFR can shorten the ignition delay and the duration of combustion at all loads. The use of a 35% emulsion increases almost all cylinder pressure peaks. The trend shows that the use of emulsion fuels tends to increase HC and CO emissions along with the increase in water content in emulsion fuels but reduces smoke emissions.