Optimization of Parameters Affecting the Performance and Emissions of a Spark Ignition Engine Fueled with n‑Pentanol/Gasoline Blends Using Taguchi Method

摘要

As operating factors play an important role in engine emissions and performance, it is important to explore the simultaneousimpact of various operating factors on engine performance and emission responses. Taguchi method was used in orderto determine the suitability of using n-pentanol in spark ignition engine and to determine the optimum operating conditionswith fewer experiments instead of many experiments. Engine load, n-pentanol percentage and ignition advance wereselected as engine operating variables. Three different levels were determined for each of the selected engine variablesand an experimental design was created using the Taguchi method. Taguchi method proposed L_(27)(3 ^ 3) orthogonal arrayexperimental design for three different variables with three different levels. According to the graphs of signal-to-noise ratioobtained with Taguchi design, simultaneous optimum results of all responses were generally determined as high n-pentanolpercentage, average ignition advance and average load. According to results, Taguchi design method is an effective methodwith the aim of defining the impact rates of engine operating parameters and to optimize engine operating variables for bestengine performance and emissions.