Assessing performance variability in a dual-fuel diesel engine using diesel and biogas: an experimental study across different compression ratios

IF 1.5 Q2 ENGINEERING, MULTIDISCIPLINARY

Engineering Research Express Pub Date : 2024-08-29 DOI:10.1088/2631-8695/ad710b

Sanjay D Mali, Pinkesh R Shah, Divyang R Shah

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Abstract

The increasing concerns about energy security and environmental sustainability have intensified the search for alternative fuels. This study investigates the performance and emission characteristics of a dual-fuel diesel engine utilizing purified biogas and diesel across various compression ratios. A single-cylinder, direct-injection, water-cooled, variable compression ratio diesel engine was adapted to operate in dual-fuel mode, running experiments at compression ratios of 12, 14, 16, 18, and 20 with a constant injection timing of 23° before top dead center under different load conditions. The study reveals a peak brake thermal efficiency of 33.25% at a compression ratio of 20, demonstrating the potential of biogas as a viable alternative fuel. Notably, while carbon monoxide and hydrocarbon emissions decreased with higher compression ratios, nitrogen oxide emissions increased, highlighting a trade-off in emission characteristics. This work contributes to the understanding of biogas utilization in diesel engines, offering insights into optimizing engine performance and emissions through compression ratio adjustments. The findings can inform future developments in sustainable energy solutions.

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评估使用柴油和沼气的双燃料柴油发动机的性能变化：不同压缩比的实验研究

人们对能源安全和环境可持续性的关注与日俱增，这加剧了对替代燃料的探索。本研究调查了使用净化沼气和柴油的双燃料柴油发动机在不同压缩比下的性能和排放特性。将一台单缸、直喷、水冷、可变压缩比柴油发动机调整为以双燃料模式运行，在不同负载条件下，分别以 12、14、16、18 和 20 的压缩比和顶死点前 23° 的恒定喷射正时进行实验。研究显示，在压缩比为 20 时，制动热效率峰值为 33.25%，证明了沼气作为一种可行的替代燃料的潜力。值得注意的是，虽然一氧化碳和碳氢化合物的排放量随着压缩比的增加而减少，但氮氧化物的排放量却增加了，这凸显了排放特性的权衡。这项研究有助于人们了解柴油发动机对沼气的利用，为通过调整压缩比优化发动机性能和排放提供了见解。研究结果可为可持续能源解决方案的未来发展提供参考。

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

Engineering Research Express Engineering-Engineering (all)

CiteScore

2.20

自引率

5.90%

发文量

192