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首页> 外文期刊>RSC Advances >Production, characterization, engine performance and emission characteristics of Croton megalocarpus and Ceiba pentandra complementary blends in a single-cylinder diesel engine
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Production, characterization, engine performance and emission characteristics of Croton megalocarpus and Ceiba pentandra complementary blends in a single-cylinder diesel engine

机译：单缸柴油机中巴豆和雪松五味子互补混合物的生产，表征，发动机性能和排放特性

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摘要

Compounding energy demand and environmental issues necessitate suitable alternative or partial replacement of fossil fuels. Among the possible sources, biodiesel from non-edible vegetable oil sources is more economically feasible and possesses characteristics close to those of petroleum diesel. Two potential non-edible biodiesel feedstocks "Croton megalocarpus" and "Ceiba pentandra" were used for biodiesel production through esterification and transesterification process on a laboratory scale. Biodiesel characterization, engine performance and emission characteristics were investigated in an unmodified direct injection, naturally aspirated, single-cylinder diesel engine. 20% (v/v) of each of C. megalocarpus (CM), C. pentandra (CP) and their combined blends (CMB20, CPB20, CMB15CPB05, CMB10CPB10, and CMB05CPB15) were tested under varying engine speeds ranging from 1000 rpm to 2400 rpm at full load conditions. CMB20 and CPB20 reduced the brake power (BP) by 2.63% and 3.70%, brake thermal efficiency (BTE) by 5.97% and 3.72%, carbon monoxide (CO) emission by 1.09% and 2.39%, hydrocarbon (HC) emission by 1.48% and 4.62% and smoke emission by 12.35% and 17.13%, respectively compared to petroleum diesel. On the other hand, CMB20 and CPB20 increased the brake specific fuel consumption (BSFC) by 9.74% and 7.63%, NOX emission by 13.19% and 15.45%, respectively. A mixture of 10% of both biodiesels with diesels (CMB10CPB10) provides better performance and emission characteristics. CMB10CPB10 reduced BP, BTE, CO, HC and smoke by 0.53%, 0.50%, 5.21%, 8.38% and 20.71%, respectively and increased BSFC and NOX by 3.90% and 18.66%, respectively compared to conventional diesel. A combined blend of CM and CP could be a sustainable substitute for fossil diesel in the context of performance and emission.
机译：能源需求和环境问题加剧，因此需要对化石燃料进行适当的替代或部分替代。在可能的来源中，来自非食用植物油来源的生物柴油在经济上更可行，并且具有与石油柴油相似的特性。通过实验室规模的酯化和酯交换过程，将两种潜在的不可食用生物柴油原料“巴豆（Croton megalocarpus）”和“五味木（Ceiba pentandra）”用于生产生物柴油。在未经修改的直喷，自然吸气，单缸柴油发动机中研究了生物柴油的特性，发动机性能和排放特性。在1000转/分至在满载条件下为2400 rpm。 CMB20和CPB20分别降低了制动功率（BP）2.63％和3.70％，制动热效率（BTE）5.97％和3.72％，一氧化碳（CO）排放量分别为1.09％和2.39％，碳氢化合物（HC）排放量1.48相较于石油柴油，烟气排放量分别减少5％和4.62％，烟气排放量减少12.35％和17.13％。另一方面，CMB20和CPB20分别增加了9.74％和7.63％的制动器比油耗（BSFC），NOx排放量13.19％和15.45％。两种生物柴油与柴油（CMB10CPB10）的10％混合可提供更好的性能和排放特性。与传统柴油相比，CMB10CPB10分别降低了BP，BTE，CO，HC和烟气0.53％，0.50％，5.21％，8.38％和20.71％，BSFC和NOX分别提高了3.90％和18.66％。在性能和排放方面，CM和CP的混合掺混物可能是化石柴油的可持续替代品。

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