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Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels
Advances in Mechanical Engineering ( IF 2.1 ) Pub Date : 2020-09-29 , DOI: 10.1177/1687814020962351
Misel J Sisi 1 , M Rafiuddin Ahmed 1 , David Rohindra 2
Affiliation  

The performance characteristics of the engine and the emission levels with Copra Oil (CPO), Virgin Coconut (cocos nucifera) Oil (VCO), Tamanu (calaphyllum inopyllum) Oil (TMO), and Nangae (canarium indicum) Oil (NGO) are presented. The oils, obtained from naturally grown trees in Vanuatu, were tested as straight vegetable oils (SVOs) in a Diesel engine and the results are compared with those of neat diesel. The oils were converted to their fatty-acid-methyl-esters (FAMEs) using gas chromatography to determine their fatty acid compositions. The brake thermal efficiency with SVOs was found to be comparable to diesel. The structure of the alkyl chain and the carbon-to-hydrogen ratio were also studied. All the oils have Palmitic acid, Capric acid, Caprylic acid, and Oleic acid as the major fatty acids. The CPO and VCO have higher amounts of Oleic acid, which acts as an additive and breaks up the interaction between the major fatty acids at higher temperatures, reducing the viscosity. Emissions of CO2 were lower while those of CO, NOx, and SO2 were higher with SVOs compared to diesel. The results indicate that the local SVOs are good and inexpensive substitute fuels for Vanuatu that can help the country meet the UN’s sustainable development goals.



中文翻译:

使用瓦努阿图的纯植物油作为燃料的柴油发动机的性能和排放特性

介绍了发动机的性能特性以及椰油,椰子油,椰子油,苦橙油和印度棕榈油的排放水平。 。从瓦努阿图自然生长的树木中获得的油在柴油机中作为纯植物油(SVO)进行了测试,并将结果与​​纯柴油进行了比较。使用气相色谱法将油转化为其脂肪酸甲酯(FAME),以确定其脂肪酸组成。发现使用SVO的制动器热效率可与柴油媲美。还研究了烷基链的结构和碳氢比。所有的油均以棕榈酸,癸酸,辛酸和油酸为主要脂肪酸。CPO和VCO的油酸含量较高,用作添加剂并在较高温度下破坏主要脂肪酸之间的相互作用,从而降低粘度。一氧化碳排放量与柴油相比,SVO的排放降低了2%,而CO,NOx和SO 2的排放升高了。结果表明,当地的SVO是瓦努阿图的优质廉价替代燃料,可以帮助该国实现联合国的可持续发展目标。

更新日期:2020-09-30
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