ABSTRACT

A major problem that is confronting mankind is the rapid depletion of fossil resources creating an energy demand along with their environmental impact. Therefore, finding an alternate energy source is the primary goal to attain sustainable development. Biodiesel is a promising alternate energy source for compression ignition engines. But it has some drawbacks like lower thermal efficiency, higher emission of smoke, NOx, CO and HC. Adding fuel additives with biodiesel–diesel blends is a fruitful method to overcome these problems. In this work, acetone is used as an oxygenated fuel additive in the volumetric proportion of 5%, 10%, and 15% with biodiesel–diesel blend and named as B20A5, B20A10 and B20A15. The performance, combustion, and emission characteristics of single-cylinder, four-stroke, water-cooled vertical diesel engine has been evaluated. The experimental results revealed that B20A15 has resulted in a nominal increase in brake specific fuel consumption by 8%, brake thermal efficiency of 1%, and reduction in CO by 18.4%, smoke opacity by 4.46%, HC by 1.42%, and NOx by 4.36% when compared to diesel at full load condition.

摘要

人类面临的一个主要问题是化石资源的迅速枯竭，造成能源需求及其对环境的影响。因此，寻找替代能源是实现可持续发展的首要目标。生物柴油是一种很有前途的压燃式发动机替代能源。但它有一些缺点，如热效率较低，烟雾、NOx、CO 和 HC 排放量较高。在生物柴油-柴油混合物中添加燃料添加剂是克服这些问题的有效方法。在这项工作中，丙酮用作含氧燃料添加剂，体积比例分别为 5%、10% 和 15%，与生物柴油-柴油混合物并命名为 B20A5、B20A10 和 B20A15。对单缸、四冲程、水冷立式柴油发动机的性能、燃烧和排放特性进行了评估。