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<p>Mixing ethanol into pure diesel fuel has significant promise for enhancing engine performance and reducing hazardous emissions in Compression Ignition Engines (CIEs). A comprehensive numerical analysis using a well-validated single-cylinder, water-cooled CIE model to evaluate the impact of ethanol–diesel blends at different ratios (0%, 5%, 10%, 15%, and 20%) on performance and emission has been carried out in this study. The analyzed key parameters include temperature, pressure of the cylinder, rate of heat release, and gas temperature at exhaust and emissions of pollutants, including NOx, soot, CO, CO₂, and others. Findings indicate that a 5% ethanol blend provides excellent improvements, significantly improving combustion efficiency and lowering exhaust gas temperature while maintaining emission quality. Although these higher blends reduce the overall advantages of lower emissions, these emissions are much lower compared to pure diesel combustion, with a 20% blend resulting in a 91.7% decrease in NOx emissions. Blending ethanol up to 20% shows significant potential for improving performance and reducing emissions in CIEs, with a 5% blend exhibiting the lowest emission characteristics with acceptable performance characteristics.</p>

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Investigation of combustion and emission of ethanol-diesel blended fuel in diesel engine using CFD

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • Abhijeet Ganesh Ghogare,
  • Vijay Panchore,
  • Upendra Rajak,
  • Tikendra Nath Verma

摘要

Mixing ethanol into pure diesel fuel has significant promise for enhancing engine performance and reducing hazardous emissions in Compression Ignition Engines (CIEs). A comprehensive numerical analysis using a well-validated single-cylinder, water-cooled CIE model to evaluate the impact of ethanol–diesel blends at different ratios (0%, 5%, 10%, 15%, and 20%) on performance and emission has been carried out in this study. The analyzed key parameters include temperature, pressure of the cylinder, rate of heat release, and gas temperature at exhaust and emissions of pollutants, including NOx, soot, CO, CO₂, and others. Findings indicate that a 5% ethanol blend provides excellent improvements, significantly improving combustion efficiency and lowering exhaust gas temperature while maintaining emission quality. Although these higher blends reduce the overall advantages of lower emissions, these emissions are much lower compared to pure diesel combustion, with a 20% blend resulting in a 91.7% decrease in NOx emissions. Blending ethanol up to 20% shows significant potential for improving performance and reducing emissions in CIEs, with a 5% blend exhibiting the lowest emission characteristics with acceptable performance characteristics.