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<p>The addition of HHO on the brake thermal efficiency and the specific fuel consumption was analyzed. The laminar flame speed for hydrogen is almost five times higher than that for most hydrocarbon fuels. Better homogeneity of the combustible mixture would provide better conditions for the complete combustion process. In addition, faster combustion becomes closer to constant volume causing an increase in the indicated efficiency. The analysis revealed that adding self-generated HHO affects the engine performance. The effect can be positive or negative depending on the operating condition of the engine. The reason for the high BTE is attributed to increase in heat release rate and improvement of the overall thermodynamic efficiency of the engine when mixed with hydrogen. A specific operating region of the engine where HHO could affect was identified.</p>

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The Effect of Self-Generated HHO on Diesel Engine Fuel Efficiency

  • 期刊论文

  • 发表日期：

    2025年3月25日

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  • S. D. Rasika Perera

摘要

The addition of HHO on the brake thermal efficiency and the specific fuel consumption was analyzed. The laminar flame speed for hydrogen is almost five times higher than that for most hydrocarbon fuels. Better homogeneity of the combustible mixture would provide better conditions for the complete combustion process. In addition, faster combustion becomes closer to constant volume causing an increase in the indicated efficiency. The analysis revealed that adding self-generated HHO affects the engine performance. The effect can be positive or negative depending on the operating condition of the engine. The reason for the high BTE is attributed to increase in heat release rate and improvement of the overall thermodynamic efficiency of the engine when mixed with hydrogen. A specific operating region of the engine where HHO could affect was identified.