Effects of isopropanol-butanol-ethanol on the performance, combustion and emission characteristics of a diesel-methanol dual-fuel engine

IF 9 1区 工程技术 Q1 ENERGY & FUELS Renewable Energy Pub Date : 2024-11-02 DOI:10.1016/j.renene.2024.121790
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Abstract

Both diesel-methanol dual-fuel (DMDF) combustion and the addition of isopropanol-butanol-methanol (IBE) into diesel are capable of reducing the fossil fuel usage and soot emissions of diesel engines, but few of studies focused on combining the advantages of these two methods. Thereby, diesel containing 10 %, 20 % and 30 % of IBE by volume were utilized as pilot fuel in this study to investigate how the addition of IBE into diesel affects the performance, combustion and emissions of the DMDF engine. Experiments were performed at the engine load of 20 %, 40 % and 60 % with the engine speed fixed at 1400r/min. The results show that at most test conditions, the brake thermal efficiency of the DMDF engine only suffers a slightly drop while the soot emissions greatly reduce when IBE is blended into the pilot fuel diesel. Moreover, the deterioration of CO, HC and NOx emissions of DMDF engine can be significantly improved by blending no more than 20 % vol. IBE into the pilot fuel diesel. Additionally, with the volume ratio of IBE into the pilot fuel diesel increases to 30 %, the soot emissions of the DMDF engine can be further reduced at the costs of engine performance deteriorates and CO, HC, NOx emissions increase. Although the deterioration of the engine performance caused by the addition of IBE into the pilot fuel diesel can be mitigated by increasing the methanol flow rate, NOx emissions increase significantly.
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异丙醇-丁醇-乙醇对柴油-甲醇双燃料发动机性能、燃烧和排放特性的影响
柴油-甲醇双燃料(DMDF)燃烧和在柴油中添加异丙醇-丁醇-甲醇(IBE)都能减少柴油发动机的化石燃料用量和烟尘排放,但很少有研究侧重于将这两种方法的优势结合起来。因此,本研究将体积分数分别为 10%、20% 和 30% 的 IBE 柴油作为试验燃料,以研究在柴油中添加 IBE 如何影响 DMDF 发动机的性能、燃烧和排放。实验在发动机负荷为 20%、40% 和 60%、转速为 1400r/min 的条件下进行。结果表明,在大多数试验条件下,DMDF 发动机的制动热效率仅略有下降,而在先导燃料柴油中掺入 IBE 后,烟尘排放量大大减少。此外,在先导燃料柴油中掺入不超过 20% 体积比的 IBE 后,DMDF 发动机的 CO、HC 和 NOx 排放劣化情况得到明显改善。此外,随着 IBE 在先导燃料柴油中的体积比增加到 30%,DMDF 发动机的烟尘排放可以进一步减少,但代价是发动机性能恶化,CO、HC 和 NOx 排放增加。虽然通过增加甲醇流量可以缓解在先导燃料柴油中添加 IBE 导致的发动机性能下降,但氮氧化物排放量却显著增加。
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来源期刊
Renewable Energy
Renewable Energy 工程技术-能源与燃料
CiteScore
18.40
自引率
9.20%
发文量
1955
审稿时长
6.6 months
期刊介绍: Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.
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