Application of response surface methodology on performance and emission characteristics of a diesel engine fueled with diesel, pentanol, and biogas.

The current investigation's objective is to compare various pentanol/biogas/diesel fuel mixes' performance and exhaust parameters in a dual fuel engine. The varied flow rates of gaseous fuel (10, 20, and 30 L per minute) and pentanol fractions (10, 15, and 20%) in conventional diesel at various engine loads (20, 60, and 100%) were studied. Response surface approach was used to assess the researched variables in order to get the best model. The entire range of the proposed multivariate models was statistically significant in the current analysis, demonstrating the great accuracy of the models. Additionally, the values of the independent parameters were defined using the desirability technique to get the highest performance and the lowest engine-out emissions. As per the modeling results, the ideal operation condition was found at an engine load of 83%, a pentanol ratio of 10%, and a biogas flow rate of 30 L per minute. In particular, the use of biogas instead of fossil fuels is valuable both economically and in terms of climate studies. The projected values for the relevant reaction parameters at the recommended point were 22% brake thermal efficiency, 56 ppm unburned hydrocarbon emissions, 0.09% carbon monoxide emissions, 102 ppm nitrogen oxides emissions, and 24% emitted smoke. The response surface approach might be utilized to properly model and optimize a diesel engine that runs on a ternary mix, as demonstrated by the high desirability of 0.74 for derived models. The fuel used can be utilized to minimize the pollution coming out of tailpipe of diesel engines and also helps in enhancing the performance of the engine as compared to natural diesel.