Synergetic influence of urea addition on performance and emissions of hydrogen–diesel dual fuel engine

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL

Journal of Thermal Analysis and Calorimetry Pub Date : 2024-12-26 DOI:10.1007/s10973-024-13920-z

M. S. Gad, Tamer Elsakhawy, Faisal B. Baz, Magda K. El-Fakharany

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引用次数: 0

Abstract

An important measure that shows the total amount of greenhouse gases released into the environment is the carbon footprint by using fossil fuels. Sustainable alternatives are seen as an effective step in both preventing the depletion of fossil fuels and combating climate change. To overcome these negative consequences, the use of area with hydrogen is becoming increasingly popular among fuel researchers. However, the application of hydrogen as a fuel can potentially increase NOx emissions. For this reason, water–urea solution of 5% by volume was added to diesel–hydrogen dual fuel engine. Subsequently, the intake manifold was supplied with 1 LPM of hydrogen. Different engine loads were evaluated, while diesel engine was operated at 1500 rpm rated speed. As a result, the addition of 5% urea and 1 LPM of hydrogen to diesel led to a decrease in BSFC by 23% and an improvement in thermal efficiency by 25% compared to diesel fuel. Blend of diesel oil with urea and hydrogen decreased EGT by 2% lower than diesel oil. NOx, CO, HC and CO₂ concentrations were decreased by 5, 61, 13 and 53%, respectively, when diesel was mixed with urea and hydrogen about diesel oil. Engine performance may be improved, and exhaust pollutants can be reduced by utilizing diesel oil combined with hydrogen and urea as an alternative fuel.

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尿素添加对氢柴油双燃料发动机性能和排放的协同影响

显示温室气体排放到环境中的总量的一个重要指标是使用化石燃料产生的碳足迹。可持续替代品被视为防止化石燃料枯竭和应对气候变化的有效步骤。为了克服这些负面影响，氢燃料的使用越来越受到燃料研究人员的欢迎。然而，氢作为燃料的应用可能会增加氮氧化物的排放。为此，在柴油-氢双燃料发动机中加入体积比为5%的水-尿素溶液。随后，进气歧管提供了1lpm的氢气。在柴油机以1500转/分额定转速运行的情况下，对不同的发动机负荷进行了评估。结果，与柴油相比，在柴油中添加5%的尿素和1 LPM的氢，可使BSFC降低23%，热效率提高25%。与普通柴油相比，尿素和氢混合柴油的EGT降低了2%。柴油中掺入尿素和氢气后，NOx、CO、HC和CO2浓度分别降低了5%、61%、13%和53%。利用与氢和尿素混合的柴油作为替代燃料，可以提高发动机的性能，减少尾气污染物。

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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来源期刊

Journal of Thermal Analysis and Calorimetry 化学-分析化学

CiteScore

8.50

自引率

9.10%

发文量

577

审稿时长

3.8 months

期刊介绍： Journal of Thermal Analysis and Calorimetry is a fully peer reviewed journal publishing high quality papers covering all aspects of thermal analysis, calorimetry, and experimental thermodynamics. The journal publishes regular and special issues in twelve issues every year. The following types of papers are published: Original Research Papers, Short Communications, Reviews, Modern Instruments, Events and Book reviews. The subjects covered are: thermogravimetry, derivative thermogravimetry, differential thermal analysis, thermodilatometry, differential scanning calorimetry of all types, non-scanning calorimetry of all types, thermometry, evolved gas analysis, thermomechanical analysis, emanation thermal analysis, thermal conductivity, multiple techniques, and miscellaneous thermal methods (including the combination of the thermal method with various instrumental techniques), theory and instrumentation for thermal analysis and calorimetry.