Experimental investigation of benzyl alcohol premixing effect on 5E concepts of compression ignition engine powered with lemongrass oil - diesel blend using response surface methodology

The corrected abstract is as follows.This article aims to study the benzyl alcohol premixing effect on the 5E concept of compression ignition engines powered with a lemongrass oil-diesel blend. The central composite approach is used to create the experimental matrix for the load (50-100%) and benzyl alcohol premixing ratio (0-20%). The experiment uses a computerized compression ignition, water-cooled, single-cylinder, naturally aspirated, four-stroke engine. The statistical model is tested using analysis of variance and confirmed at the 95% confidence level. Quadratic and linear models are created, and regression equations provide surface plots to analyse load-premixing ratio interaction on output response. Premixing of benzyl alcohol at 20% at maximum loads confirms 31.09%, 14.95%, 31.09%, 39.91%, 17.26%, 11.06%, 7.59%, 36.61%, and 4.34% higher enviroeconomic loss, thermal efficiency, brake-specific carbon dioxide, brake-specific nitrogen monoxide, cooling water exergy, sustainability index, volumetric efficiency, and exhaust gas temperature. It also has lower exergoeconomic loss, thermoeconomic loss, brake-specific energy consumption, brake-specific carbon monoxide, smoke opacity, brake-specific hydrocarbon fuel exergy, exhaust gas exergy, destructed exergy, and entropy generation by 23.64%, 30.4%, 17.50%, 13.6%, 81.30%, 18.1%, 27.77%, and 27.77%, respectively. It is necessary to control nitrogen monoxide using exhaust gas recirculation or selective catalytic reduction technology in future work.