Experimental investigation shows reduced emissions in a diesel engine, suggesting methanol blends improve combustion characteristics.
This study investigates a diesel engine fueled with methanol/diesel blends to examine the effects of varying methanol ratios on combustion and emission characteristics. A three-dimensional computational fluid dynamics (CFD) model of the combustion chamber is developed using CONVERGE 3.0, coupled with a chemical kinetic mechanism generated via the CHEMKIN program, comprising 182 reactions and 52 species. The results indicate that compared to the original engine, methanol/diesel blends reduce peak in-cylinder pressure, maximum temperature, and emissions of NOx, NO, and soot. At a methanol blending ratio of 30%, NOx, NO, and soot emissions are reduced by 41.12%, 66.96%, and 26.54%, respectively.
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Bao et al. (2025) studied this question.
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