A comprehensive analysis of a dual fuel engine operating on cottonseed oil methyl ester and hydrogen

IF 6.7 1区工程技术 Q2 ENERGY & FUELS

Fuel Pub Date : 2024-11-26 DOI:10.1016/j.fuel.2024.133789

Manikandaraja Gurusamy, Balaji Subramanian

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Abstract

This study investigates the effects of hydrogen addition on a compression-ignition (CI) engine that operates on cottonseed oil methyl ester (CSOME). Hydrogen was introduced into the engine inlet manifold at flow rates ranging from 5 Liters per minute (LPM) to 20 LPM, with intervals of 5 LPM (designated as C100H5, C100H10, C100H15, and C100H20). The engine was operated on 100 % Cottonseed Oil Methyl Ester (C100) at various load conditions in a constant speed engine. It was observed that under all load situations, the temperature of the exhaust gas increased as the hydrogen flow rate increased. Maximum of 16.66 % increment in exhaust gas temperature was noted with C100H20 than neat diesel operation. Similarly, as hydrogen induction rates increased, the cut-off ratio, effective compression ratio, and volumetric efficiency all dropped. On the other hand, both brake thermal efficiency and second law efficiency were increased by 16.11 and 13.41 % than neat diesel while operating with C100H20 at 100 % load condition. The peak values for in-cylinder pressure and heat release rate were found to be 4.18 %, and 21.85 % higher than neat diesel for C100H20 with maximum load applied. Nitrogen monoxide emissions increased as a result of the increase in hydrogen induction flow rate by maximum of 40.51 % and then diesel. However, emissions of oxides of carbon (CO and CO₂), hydrocarbons, and soot decreased significantly with the introduction of hydrogen. The results indicate that use of hydrogen in CI engine along with cotton seed oil shows positive sign in terms of performance and emission with trends in NO emission which can further be reduced by adopting EGR or After gas treatment.

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对使用棉籽油甲酯和氢气的双燃料发动机的综合分析

本研究调查了加氢对以棉籽油甲酯（CSOME）为燃料的压燃（CI）发动机的影响。氢气以每分钟 5 升 (LPM) 到 20 升 (LPM) 不等的流速被引入发动机进气歧管，每隔 5 升 (LPM) 为一个间隔（命名为 C100H5、C100H10、C100H15 和 C100H20）。发动机在各种负载条件下以恒速使用 100 % 棉籽油甲酯（C100）。观察发现，在所有负载条件下，废气温度都随着氢气流量的增加而升高。与纯柴油相比，使用 C100H20 时废气温度最高上升了 16.66%。同样，随着氢气诱导率的增加，截流比、有效压缩比和容积效率都有所下降。另一方面，在 100% 负载条件下使用 C100H20 时，制动热效率和第二定律效率分别比纯柴油提高了 16.11% 和 13.41%。在最大负荷条件下，C100H20 的缸内压力和热释放率的峰值分别比纯柴油高出 4.18 % 和 21.85 %。一氧化氮排放量随着氢气诱导流量的增加而增加，增幅最大为 40.51%，然后是柴油。然而，随着氢气的引入，碳氧化物（一氧化碳和二氧化碳）、碳氢化合物和烟尘的排放量明显减少。结果表明，在 CI 发动机中使用氢气和棉籽油，在性能和排放方面都显示出积极的迹象，氮氧化物的排放呈下降趋势，通过采用 EGR 或气体后处理可进一步减少氮氧化物的排放。

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

Fuel 工程技术-工程：化工

CiteScore

12.80

自引率

20.30%

发文量

3506

审稿时长

64 days

期刊介绍： The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.