Experimental study on the effect of combustion and emission performance of biodiesel–ammonia dual-fuel engine

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-07-01 DOI:10.1063/5.0208372

Ye Qiu, Haijun Wei, Daping Zhou, Xinyi Zhou, Tie Li

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Abstract

To assist vessels in meeting the net-zero emission target set by the International Maritime Organization for 2050, this article investigates the emission and combustion characteristics of biodiesel–ammonia dual-fuel engines. This research investigates the impact of various ammonia mass ratios (AMRs, m%) at 0, 14.67%, 29.48%, 46.21%, 58.73%, and 82.72% on the combustion and emission performance of biodiesel–ammonia dual-fuel engines at fixed speed and load. The results show that the biodiesel–ammonia dual-fuel engine is capable of operating at a substantial AMR of 82.72%. In addition, as the AMR increased, the in-cylinder pressure and brake thermal efficiency decreased. The heat release rate peaked at 57.13% AMR. When compared to the only-biodiesel mode, NOx, CO2, and soot emissions are significantly reduced. CO2 and soot emissions decreased by 63.43% and 60%, respectively, at 82.72% AMR, while NOx emissions fell by 34.15% at 58.73% AMR. The emissions of N2O and unburned ammonia rose linearly as AMR increased. The increase in N2O did not counteract the substantial fall in CO2e. CO2e fell by 63.12% at 82.72% AMR, following a trend to similar CO2.

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生物柴油-氨气双燃料发动机燃烧和排放性能影响的实验研究

为帮助船舶实现国际海事组织设定的 2050 年净零排放目标，本文研究了生物柴油-氨气双燃料发动机的排放和燃烧特性。该研究调查了不同氨气质量比（AMRs，m%）（0、14.67%、29.48%、46.21%、58.73% 和 82.72%）对生物柴油-氨气双燃料发动机在固定转速和负荷下的燃烧和排放性能的影响。结果表明，生物柴油-氨气双燃料发动机能够在 82.72% 的大幅 AMR 下运行。此外，随着 AMR 的增加，缸内压力和制动热效率都有所下降。热释放率在 AMR 为 57.13% 时达到峰值。与仅使用生物柴油的模式相比，氮氧化物、二氧化碳和烟尘排放量显著减少。在 82.72% AMR 时，二氧化碳和烟尘排放量分别减少了 63.43% 和 60%，而在 58.73% AMR 时，氮氧化物排放量减少了 34.15%。随着 AMR 的增加，N2O 和未燃烧氨的排放量呈线性上升。N2O 的增加并没有抵消 CO2e 的大幅下降。在 AMR 为 82.72% 时，CO2e 下降了 63.12%，其趋势与 CO2 相似。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.