Energy, exergo-economic, sustainability, and combustion analysis of a dual-fuel diesel engine operating with hydrogen fuel

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-06-05 DOI:10.1016/j.ijhydene.2025.05.419

Anabayan Krishnamoorthy, Nataraj Ganesan

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Abstract

To evaluate the hydrogen fuel feasibility in automotive applications, conventional combustion, performance, and emission analysis alone are not satisfactory. Thermodynamic analysis (energy and exergy analysis), sustainability, CO₂ impact, and economic analysis are also significant. The work investigates the impact of hydrogen inclusion and its various energy fractions in a modified compression ignition (CI) engine that works under diesel. The engine was tested at full load condition of 4.2 bar brake mean effective pressure (BMEP) at a constant speed of 1500 rpm. Gaseous hydrogen was introduced through port fuel injection (PFI) at different injection durations, and by this, different hydrogen energy share (HES) values of 0 %, to 39.48 % were achieved. Hydrogen addition has significantly contributed to the combustion process improvement. The highest brake thermal efficiency (BTE) was registered at 32.34 % HES value and was 11.89 % more than neat diesel operation. The first law and second law efficiency were also improved, with the highest values at 22.43 % HES, which were 4.06 % and 6.39 % more than neat diesel operation. Unburned Hydrocarbon (HC), carbon monoxide (CO) and smoke emissions were reduced for all HES values. However, due to enhanced combustion, carbon dioxide (CO₂) and oxide of Nitrogen (NOx) emissions increased with maximum values for both at 39.48 % HES. The sustainability index (SI) was within the range of 1.230–1.255, always higher than unity. Environmental impact, enviro-economic and enviro-social values also showed favourable values. At the same time, the CO₂ impact and the cost analysis implied that hydrogen-diesel dual-fuel engines need improvement.

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氢燃料双燃料柴油发动机的能源、消耗、经济、可持续性和燃烧分析

为了评估氢燃料在汽车应用中的可行性，仅靠传统的燃烧、性能和排放分析是不够的。热力学分析（能源和火用分析）、可持续性、二氧化碳影响和经济分析也很重要。研究了在柴油机下工作的改进型压缩点火（CI）发动机中夹杂氢及其不同能量组分的影响。发动机在4.2 bar制动平均有效压力（BMEP）的满载状态下，匀速1500转/分进行了试验。通过不同喷油时间的气道燃油喷射（PFI）引入气态氢，实现了0% ~ 39.48%的不同氢能量份额（HES）。加氢对燃烧过程的改善有重要作用。最高的制动热效率（BTE）为HES值的32.34%，比纯柴油机高11.89%。第一定律和第二定律效率也有所提高，其最高效率为22.43% HES，分别比纯柴油高4.06%和6.39%。在所有HES值下，未燃烧碳氢化合物（HC）、一氧化碳（CO）和烟雾排放均有所减少。然而，由于燃烧增强，二氧化碳（CO2）和氮氧化物（NOx）排放量增加，两者在39.48% HES时均达到最大值。可持续性指数（SI）在1.230 ~ 1.255范围内，始终高于统一。环境影响、环境经济和环境社会价值也显示出有利的价值。同时，二氧化碳的影响和成本分析表明，氢柴油双燃料发动机需要改进。

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

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.