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<p>This study investigates the use of raw biogas as an alternative fuel in combination with waste Annona seed-driven biodiesel and a diesel blend in a dual-fuel mode diesel engine. The Annona seed oil is first transesterified into biodiesel and then blended with conventional diesel fuel at a 20% (B20) ratio. The biogas flow rate is adjusted to 1, 2, and 4&#xa0;L/min while the engine runs on the B20 test fuel. A Venturi gas mixer is utilized to ensure a uniform mixture within the combustion chamber. The engine operates at a constant speed of 1500&#xa0;rpm across various load conditions (25%, 50%, 75%, and 100%). The findings depict that biogas introduced at a flow rate of 1&#xa0;L/min shows the best performance, yielding the lowest emissions among the tested flow rates. In dual-fuel operation with a BD10 BG at a 1&#xa0;L/min biogas flow rate, the brake thermal efficiency (BTE) drops by 9.94% and the brake specific fuel consumption (BSFC) increases by 8.82% compared to diesel. CO and HC emissions rise by 5.18% and 3.01%, respectively, but NOx emissions decrease by an average of 14.91%. This study of dual-fuel CI engines running on biogas and biodiesel demonstrates a viable pathway to cleaner, more efficient dual-fuel CI engine operation, advancing sustainable energy solutions in alignment with SDGs 7, 12, and 13.</p>

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Synergistic effect of biogas and waste Annona seed biodiesel on dual fuel engine performance and emissions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月30日

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  • Ashok Kumar Yadav,
  • Ashish Dewangan,
  • Aqueel Ahmad,
  • Mukesh Yadav,
  • Ashok Kumar Dewangan,
  • Niraj Kumar

摘要

This study investigates the use of raw biogas as an alternative fuel in combination with waste Annona seed-driven biodiesel and a diesel blend in a dual-fuel mode diesel engine. The Annona seed oil is first transesterified into biodiesel and then blended with conventional diesel fuel at a 20% (B20) ratio. The biogas flow rate is adjusted to 1, 2, and 4 L/min while the engine runs on the B20 test fuel. A Venturi gas mixer is utilized to ensure a uniform mixture within the combustion chamber. The engine operates at a constant speed of 1500 rpm across various load conditions (25%, 50%, 75%, and 100%). The findings depict that biogas introduced at a flow rate of 1 L/min shows the best performance, yielding the lowest emissions among the tested flow rates. In dual-fuel operation with a BD10 BG at a 1 L/min biogas flow rate, the brake thermal efficiency (BTE) drops by 9.94% and the brake specific fuel consumption (BSFC) increases by 8.82% compared to diesel. CO and HC emissions rise by 5.18% and 3.01%, respectively, but NOx emissions decrease by an average of 14.91%. This study of dual-fuel CI engines running on biogas and biodiesel demonstrates a viable pathway to cleaner, more efficient dual-fuel CI engine operation, advancing sustainable energy solutions in alignment with SDGs 7, 12, and 13.