Application of an enhanced Taguchi method for simultaneous reduction of smoke and NOx emissions using oxygenated additives and retarded injection timing in a stationary diesel engine

摘要: The present work employs an enhanced Weighted Signal-to-Noise (WSN) ratio method in conventional Taguchi design to determine optimum combination of a diesel-oxygenate blend and injection timing stationary diesel engine with objective reduce NOx smoke emissions simultaneously best possible performance. An experimental matrix based on Taguchi’s L 9 orthogonal array was planned experiments were conducted accordingly. Three parameters, namely oxygenate type, its composition fuel three levels, chosen. emissions, Smoke opacity, Brake thermal efficiency specific consumption taken as response variables. Diethyl ether (DEE), Dimethyl carbonate (DMC) Diglyme (DGM) chosen oxygenates. individual effects each parameter performance investigated using analysis variance. Confirmation the suggested levels results compared baseline engine. It found that 10 % DGM injected at 21° crank angle (CA) is for reducing Further, lowest opacity predicted confirmed be DMC diesel, CA. obtained from 15 % DEE 17° CA proposed WSN-based experimentally verified effective predicting 67 % reduction experimentation time.