A numerical investigation on enhancing the performance of a diesel engine fuelled with diesel‐biodiesel blend using a diethyl ether as an additive

Engineering Reports Pub Date : 2024-05-15 DOI:10.1002/eng2.12915

Abdulkarim Youssef, Amr Ibrahim

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Abstract

Globally, the encouragement of using renewable fuels like biodiesel for diesel engines is driven by concerns over the fossil fuel depletion and harmful emissions. Additionally, the utilization of renewable fuel additives like diethyl ether has the potential to enhance fuel properties and boost engine performance. The aim of this paper was to construct a computer simulation using Ricardo Wave program in order to predict the performance and nitrogen oxides (NOx) emission of a diesel engine fuelled by a diesel‐biodiesel blend and a diethyl ether (DEE) as a fuel additive. The computer model was validated by comparing the simulation engine performance and NOx emission results against the corresponding experimental data for diesel, diesel‐biodiesel blend with 30% biodiesel proportion (B30), and two blends of diesel‐biodiesel‐DEE with DEE proportions of 5% and 10% on a volume basis. Also, the effect of varying the inlet air pressure on engine performance and NOx emission was compared for all investigated fuels. It was numerically demonstrated that using the DEE with an optimum proportion of 5% enhanced engine performance as it decreased engine fuel consumption by 5.9% and increased engine thermal efficiency by 9.6% compared to diesel fuel at engine full load condition. Also, a significant reduction of 20.5% in NOx emission resulted from the addition of DEE. Increasing the inlet air pressure increased engine power and decreased engine fuel consumption for all investigated fuels. Increasing the inlet air pressure from 1 to 3 bar increased engine brake thermal efficiency by almost 20% for all tested fuels. However, NOx emission increased slightly within a range from 1.7% to 7% for the different investigated fuels.

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使用二乙醚作为添加剂提高柴油-生物柴油混合燃料柴油发动机性能的数值研究

在全球范围内，人们对化石燃料枯竭和有害气体排放的担忧推动了柴油发动机使用生物柴油等可再生燃料。此外，使用二乙醚等可再生燃料添加剂也有可能增强燃料性能，提高发动机性能。本文旨在利用 Ricardo Wave 程序进行计算机模拟，以预测以柴油-生物柴油混合燃料和二乙醚（DEE）作为燃料添加剂的柴油发动机的性能和氮氧化物（NOx）排放。通过将模拟发动机性能和氮氧化物排放结果与柴油、生物柴油比例为 30% 的柴油-生物柴油混合物（B30）以及两种柴油-生物柴油-二乙醚混合物（二乙醚的体积比例分别为 5%和 10%）的相应实验数据进行比较，对计算机模型进行了验证。此外，还比较了所有研究燃料的进气压力变化对发动机性能和氮氧化物排放的影响。数值结果表明，在发动机满负荷状态下，使用最佳比例为 5%的 DEE 可提高发动机性能，与柴油相比，发动机油耗降低了 5.9%，发动机热效率提高了 9.6%。此外，添加 DEE 后，氮氧化物排放量大幅减少了 20.5%。对于所有研究燃料，增加进气压力可提高发动机功率并降低发动机油耗。将进气压力从 1 巴提高到 3 巴，所有测试燃料的发动机制动热效率都提高了近 20%。不过，对于不同的调查燃料，氮氧化物排放量略有增加，幅度在 1.7% 到 7% 之间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Engineering Reports

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