Investigation on effects of cobalt-chromite nanoparticle blends in compression-ignition engine

Abstract

Abstract This work provides a high-level overview of the performance parameters of a nanoparticle-fuelled engine emulsion. The nanoparticle of cobalt chromite was created by a straightforward laboratory procedure. The nanoparticles were introduced at concentrations of 20 ppm, 40 ppm, 60 ppm, and 80 ppm, with the optimal concentration being found to be a Kapok methylester-20 (KME20) blend. Varying the timings and operated the engine at a constant speed 1800 rpm. Injections can be given at 19, 23, or 27 degrees before the before top dead centre, which are referred to as retardation, standard, and advanced, respectively. The Brake thermal efficiency is increased by 7.2% when the blend of KME20 with 80 ppm advanced is compared to the triggered ignition delay. Unburnt hydrocarbon and carbon monoxide levels in the 80 ppm-Advanced KME20 mix are reduced by 37.86% and 41.66%, respectively, when compared to the standard injection period. Oxides of nitrogen and carbon monoxide in the blend KME20 with 20 ppm - retardation rose by 16.45 and 9.5 percent, respectively, compared to the duration of normal injections. Increased the brake thermal efficiency for KME20 with nanoparticles at concentration of 80 ppm is 7.5% as related to same blend without doping of nanoparticles. Using kapok methyl ester with nanoparticles doped in the standard engine can improve efficiency and performance.