An Experimental Study of Operating Range, Combustion and Emission Characteristics in an RCCI Engine Fueled with Iso-Propanol/n-Heptane

Recently, studies have been carried out using environmentally sustainable technologies with more efficient energy conversion to fulfill emission requirements. One of these technologies, reactivity controlled compression ignition (RCCI), is a low-temperature combustion mode and has dual fuel strategy. The controllability combustion, high thermal efficiency low nitrogen oxide (NOx) soot emissions are some the most prominent advantages this mode. In study, effects premixed ratio (PR) intake air temperature (IAT) on operating range, characteristics were investigated experimentally. experiments, iso-propanol n-heptane used as fuels. experiments for two different case studies. first case, performed at 50 °C three premix ratios (PR25, PR50, PR75). minimum brake-specific consumption (BSFC) was 268 g/kWh widest range obtained PR25. addition, lowest values in NOx, hydrocarbon (HC) carbon monoxide (CO) formation recorded use PR25 fuel. other conducted temperatures (30 °C, 70 °C) PR50. BSFC measured observed temperature. At same time, NOx 30 maximum HC determined 586 ppm CO 0.142% by volume