In recent years there has been a significant rise in crude glycerol generation due to the booming biodiesel industries. Despite having immense benefits, the presence of poisonous methanol and fatty acids, glycerol is treated as a waste by‐product of biodiesel. In the present study, investigations have been carried out on utilizing the potential of glycerol derived bio‐propanol as an extender fuel with diesel/gasoline blends. Test fuels containing ternary blends of diesel/gasoline/bio‐propanol in different volume concentrations were prepared. The crude glycerol was procured from transesterified Kusum (Schleichera oleosa) oil. The physicochemical properties, along with stability and homogeneity of the test fuels were evaluated as per ASTM/EN standards and compared with the neat diesel. To study the effect of fuel properties on atomization process, the sauter mean diameter of the test fuels were observed using Malvern spraytec test. The engine performance, combustion and emission characteristics of a single‐cylinder diesel engine fuelled with different test fuels were also conducted. Due to the enhancement in mixing rate promoted by low cetane fuels, the ignition delay and heat release rate was higher than diesel. Moreover, the results also reveal upto 5% increase in brake thermal efficiency and a significant reduction in harmful exhaust emission with an increase in the gasoline and bio‐propanol share in the blend. The oxide of nitrogen (NO_x) emissions was also lower than diesel for all the fuel blends. In comparison to diesel, the maximum reduction in NO_x, HC, CO and smoke emissions is 7.4%, 33.3%, 55.7%, and 17.2%, respectively, for D40:G30:P30 fuel blend.

中文翻译：

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废甘油衍生的生物丙醇可用作压缩点火发动机的潜在增量燃料

近年来，由于生物柴油行业的蓬勃发展，粗甘油的产生已大大增加。尽管有巨大的好处，有毒的甲醇和脂肪酸的存在，甘油仍被视为生物柴油的废副产品。在本研究中，已经对利用甘油衍生的生物丙醇作为柴油/汽油混合物的增量燃料的潜力进行了研究。制备了包含不同体积浓度的柴油/汽油/生物丙醇三元混合物的测试燃料。粗甘油是从酯交换的Kusum（Schleichera oleosa） 油。根据ASTM / EN标准评估了测试燃料的理化性质以及稳定性和均质性，并与纯柴油进行了比较。为了研究燃料特性对雾化过程的影响，使用Malvern Spraytec试验观察了测试燃料的Sauter平均直径。还对使用不同试验燃料供油的单缸柴油机的发动机性能，燃烧和排放特性进行了测试。由于十六烷值低的燃料可提高混合速率，因此点火延迟和放热速率均高于柴油。此外，结果还显示，随着混合气中汽油和生物丙醇含量的增加，制动器的热效率提高了5％，并显着减少了有害废气排放。氮的氧化物（NO_x）所有混合燃料的排放也低于柴油。相比于柴油，在NO的最大减小_X，HC，CO和烟气排放量分别为7.4％，33.3％，55.7％，和17.2％，分别为D40：G30：P30燃料共混物。