Application of TOPSIS Method for Multi-Characteristic Optimization of Vibration and Noise Characteristics of a Dual-Fuel CI Engine

The study focuses on optimizing vibration and noise characteristics in a dual-fuel compression ignition engine using CNG and Karanja biofuel blends. A hybrid optimization strategy using the Taguchi method and TOPSIS was employed to find the best compromise solution. The study used an experimental matrix with twenty-Seven experiments and four input parameters. The TOPSIS method was applied to solve a multi-objective optimization problem. The results showed that the TOPSIS outcome was valid with X -axis RMS velocity vibration at 7.49 mm/s and combustion noise at 93.9 dB, confirming model accuracy. This approach demonstrates a powerful framework for achieving multi-objective optimization in dual-fuel engines