Indian Geranium Grass popularly known as palmarosa is widely grown in many parts of Indian Sub-continent and used for its aromatic flavor in South American and Middle East countries. In this current study, Indian Geranium Grass oil is blended with diesel in different proportions from 0 % to 100 % by volume and its impact on performance, combustion and emission characteristics is investigated in a single-cylinder diesel engine without any modification. The experimental results projected that the performance characteristics of Biodiesel blend IGG20 were better as it consumes 12 % lesser fuel of 0.39 kg·kWh−1 and 5 % higher brake thermal efficiency compared to other blends and also exhibited peak cylinder pressure of 75.31 bar and shorter ignition delay of 17.08-degree crank angle compared to diesel. Biodiesel blend IGG20 has a significant reduction in carbon monoxide of 23 %, smoke emission of 17.2 % emission. However, there is a slight increase in total hydrocarbon, oxides of nitrogen and carbon dioxide emissions of 2 %, 15.67 % and 14 % respectively compared to diesel which may be due to poor vaporization, incomplete combustion and reduced in-cylinder temperature.

中文翻译：

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印度天竺葵草生物柴油混合物对性能、燃烧和排放特性的影响

印度天竺葵草俗称palmarosa，在印度次大陆的许多地方广泛种植，因其芳香的味道在南美和中东国家使用。在当前的这项研究中，印度天竺葵草油与柴油按体积的不同比例混合，从 0% 到 100%，并在未经任何修改的单缸柴油发动机中研究其对性能、燃烧和排放特性的影响。实验结果表明，与其他混合燃料相比，生物柴油混合 IGG20 的性能特征更好，因为它消耗的燃料减少了 12%，为 0.39 kg·kWh-1，制动热效率提高了 5%，并且还表现出75.31 bar 和更短的峰值气缸压力与柴油相比，17.08 度曲柄角的点火延迟。混合生物柴油 IGG20 的一氧化碳显着减少了 23%，烟气排放量减少了 17.2%。然而，与柴油相比，总碳氢化合物、氮氧化物和二氧化碳排放量分别略有增加 2%、15.67% 和 14%，这可能是由于汽化不良、燃烧不完全和缸内温度降低所致。