Abstract
In the present work, the optimization analysis of diesel engine parameters is carried out experimentally and by employing Taguchi method with reference to NOx (Oxides of Nitrogen) along with fuel emissions. A Kirlosker diesel engine of single cylinder with 5 kW has been chosen for the experiment. The NOx emissions as well as the fuel economy were registered while the three factors viz., load torque, fuel injection timing and fuel injection pressure were changed at four stages. Brake thermal efficiency is optimized using Taguchi methodology to analyze the experimental data. Employing the S/N ratio, the optimum values corresponding to response variables could be estimated also and optimum grouping of control parameters has been verified. The confirmatory test has been made and the brake thermal efficiency is obtained which matches with the theoretical calculation using Taguchi optimal method. The optimum fuel injection pressure which gives maximum brake thermal efficiency and minimum NOx is 200 bars.
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