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<p>This study investigates the performance of a diesel engine fuelled with a B20 blend of <i>Tamarindus indica</i> biodiesel enhanced with nickel and manganese-doped bismuth ferrite (BNiFMO) nanoparticles. The B20 fuel was dosed with nanoparticle concentrations of 50&#xa0;mg/L and 75&#xa0;mg/L, stabilized with a 1:1 mixture of Triton X and QPAN dispersants. Engine tests were performed at varying loads of 25%, 50%, 75%, and 100%. The inclusion of BNiFMO nanoparticles resulted in superior engine performance and combustion compared to standard diesel and pure B20. Significant improvements were observed in brake thermal efficiency (BTE) and brake-specific fuel consumption (BSFC). Combustion analysis revealed enhanced cylinder pressure (CP) and net heat release rate (NHRR). Furthermore, substantial reductions in emissions-carbon monoxide (CO), unburned hydrocarbons (UHC), nitrogen oxides (NO<sub>x</sub>), and smoke opacity-were recorded. The nanofuel with QPAN dispersant demonstrated the most significant results. Specifically, the blend B20 + BNiFMO75mg/L + QPAN75mg/L yielded optimal values at full load: a BTE of 27.23%, a BSFC of 0.226&#xa0;kg/kWhr, a CP of 65.3&#xa0;bar, and an NHRR of 65.23&#xa0;J/<sup>o</sup>CA. Emissions were markedly reduced to 0.072% for CO, 49 ppm for UHC, 21.04% for smoke opacity, and 428 ppm for NO<sub>x</sub>. The study concludes that BNiFMO nanoparticles are highly effective in improving the viability of biodiesel as a sustainable and cleaner alternative fuel.</p>

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Experimental Evaluation of Multi-Ferrite Nanoparticles-Doped Tamarindus indica Biodiesel in a CI Engine: Performance, Combustion, and Emission Analysis

  • 期刊论文

  • 发表日期：

    2025年12月2日

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  • Kannam Sree Sruthi,
  • Sathya Vara Prasad Lankapalli,
  • Jaikumar Sagari

摘要

This study investigates the performance of a diesel engine fuelled with a B20 blend of Tamarindus indica biodiesel enhanced with nickel and manganese-doped bismuth ferrite (BNiFMO) nanoparticles. The B20 fuel was dosed with nanoparticle concentrations of 50 mg/L and 75 mg/L, stabilized with a 1:1 mixture of Triton X and QPAN dispersants. Engine tests were performed at varying loads of 25%, 50%, 75%, and 100%. The inclusion of BNiFMO nanoparticles resulted in superior engine performance and combustion compared to standard diesel and pure B20. Significant improvements were observed in brake thermal efficiency (BTE) and brake-specific fuel consumption (BSFC). Combustion analysis revealed enhanced cylinder pressure (CP) and net heat release rate (NHRR). Furthermore, substantial reductions in emissions-carbon monoxide (CO), unburned hydrocarbons (UHC), nitrogen oxides (NOx), and smoke opacity-were recorded. The nanofuel with QPAN dispersant demonstrated the most significant results. Specifically, the blend B20 + BNiFMO75mg/L + QPAN75mg/L yielded optimal values at full load: a BTE of 27.23%, a BSFC of 0.226 kg/kWhr, a CP of 65.3 bar, and an NHRR of 65.23 J/oCA. Emissions were markedly reduced to 0.072% for CO, 49 ppm for UHC, 21.04% for smoke opacity, and 428 ppm for NOx. The study concludes that BNiFMO nanoparticles are highly effective in improving the viability of biodiesel as a sustainable and cleaner alternative fuel.