The growing transportation sector has led to harmful emissions from the combustion of fossil fuels. Similarly, the investigation of new alternatives to conventional fuels to meet current energy demands has significantly increased in recent decades. The present research investigates the energy, exergy, and emissions characteristics of a spark engine (SI engine) fuelled with partial addition of di-isobutylene (DI) and furfuryl amine (FA) (10%, 20%, and 30% by volume) in commercial super-premium gasoline (SPG) at 1500 rpm, 2500 rpm, and 3500 rpm speeds. This investigation focuses on comparing the engine characteristics of tested blends with SPG. Experimental results from an energy, exergy, and emissions analysis of SPG and tested blends showed that the maximum brake thermal efficiency (BTE) and exergy efficiency occur at 2500 rpm. Carbon monoxide (CO) and unburned hydrocarbon (HC) emissions were lowest, and carbon dioxide (CO 2 ) emissions were higher at this engine speed for the FAG30 blend. For tested blends and fuels, CO2 emissions at 1500 rpm and 3500 rpm are lower than at 2500 rpm. Compared to other blends, it was experimentally found that NOx emissions were lowest with SPG. Experimental findings show that BTE was 31.77%, 32.77%, and 26.44% for SPG, DIG30, and FAG30 blends. The FAG30 blend shows BTE and exergy efficiencies of 26.44% and 20.56%, respectively, at 2500 rpm. These results can help determine optimal engine operating conditions for biofuel-SPG blends and reduce dependence on SPG.
Mangave et al. (Tue,) studied this question.