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首页> 外文期刊>International journal of sustainable engineering >Fuel efficiency enhancement of modified diesel engine operated in dual fuel mode using renewable and sustainable fuels
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Fuel efficiency enhancement of modified diesel engine operated in dual fuel mode using renewable and sustainable fuels

机译：使用可再生和可持续燃料，在双燃料模式下操作的改进柴油发动机的燃油效率

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Renewable and sustainable fuels for diesel engine applications provide energy protection, overseas exchange saving and address atmospheric and socio-economic concerns. This study presents the investigational work carried out on a single cylinder, four-stroke, direct injection diesel engine operated in dual fuel (DF) mode using renewable and sustainable fuels. In the first phase, a Y-shaped mixing chamber or venture was developed with varied angle facility for gas entry at 30°, 45° and 60°, respectively, to enable homogeneous air and gas mixing. Further effect of different gas and air mixture entry on the DF engine performance was studied. In the next phase of the work, hydrogen flow rate influence on the combustion and emission characteristics of a compression ignition (CI) engine operated in DF mode using diesel, neem oil methyl ester (NeOME) and producer gas has been investigated. During experimentation, hydrogen was mixed in different proportions varied from 3 to 12 l/min (Ipm) in step of 3 Ipm along with air-producer gas and the mixtures were directly inducted into engine cylinder during suction stroke. Experimental investigation showed that 45° Y-shaped mixing chamber resulted in improved performance with acceptable emission levels. Further, it is observed that investigation showed that at maximum operating conditions and hydrogen flow rate of 9 Ipm, Diesel-producer gas and NeOME-producer gas combination showed increased thermal efficiency by 13.2% and 3.8%, respectively, compared to the DF operation without hydrogen addition. Further, it is noticed that hydrogen-enriched producer gas lowers the power derating by 5-10% and increases nitric oxide (NO_x) emissions. However, increased hydrogen addition beyond the 12 Ipm leads to sever knocking.
机译：柴油发动机应用的可再生和可持续燃料提供能源保护，海外交流储蓄和地址大气和社会经济问题。本研究介绍了在单缸，四冲程，直接喷射柴油发动机上进行的调查工作，使用可再生和可持续燃料在双燃料（DF）模式下操作。在第一阶段，分别在30°，45°和60°处的气体进入的变形设施的变角设施开发Y形混合室或福特，以实现均匀的空气和气体混合。研究了不同气体和空气混合物对DF发动机性能的进一步影响。在该工作的下一阶段，研究了使用柴油甲基酯（Neome）和生产者在DF模式下在DF模式下操作的压缩点火（CI）发动机的燃烧和排放特性的氢气流量影响。在实验期间，在不同比例中混合氢气在3个IPM的步骤中不同的比例混合，以及空气生产者气体，并且在吸入中，混合物直接在发动机缸中进入发动机气缸。实验研究表明，45°Y形混合室导致具有可接受的排放水平的性能提高。此外，观察到，研究表明，在9个IPM的最大操作条件和氢气流速下，与DF操作相比，柴油 - 生产者气体和Neome-生产者气体组合分别显示出增加的热效率为13.2％和3.8％。氢添加。此外，注意到富氢的生产者气体降低了5-10％的功率，并增加了一氧化氮（NO_X）排放。然而，在12个IPM之外增加了氢气引起的氢气引起敲击。

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