Department of Mechanical Engineering, Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology, Chennai, India.
Department of Mechanical Engineering, Panimalar Engineering College, Chennai, India.
Environ Sci Pollut Res Int. 2018 May;25(13):12641-12647. doi: 10.1007/s11356-018-1522-4. Epub 2018 Feb 21.
In this study, the effect of blending pentanol to biodiesel derived from mahua oil on emissions and performance pattern of a diesel engine under exhaust gas recirculation (EGR) mode was examined and compared with diesel. The purpose of this study is to improve the feasibility of employing biofuels as a potential alternative in an unmodified diesel engine. Two pentanol-biodiesel blends denoted as MOBD90P10 and MOBD80P20 which matches to 10 and 20 vol% of pentanol in biodiesel, respectively, were used as fuel in research engine at 10 and 20% EGR rates. Pentanol is chosen as a higher alcohol owing to its improved in-built properties than the other first-generation alcohols such as ethanol or methanol. Experimental results show that the pentanol and biodiesel blends (MOBD90P10 and MOBD80P20) have slightly higher brake thermal efficiency (0.2-0.4%) and lower brake-specific fuel consumption (0.6 to 1.1%) than that of neat biodiesel (MOBD100) at all engine loads. Nitrogen oxide (NOx) emission and smoke emission are reduced by 3.3-3.9 and 5.1-6.4% for pentanol and biodiesel blends compared to neat biodiesel. Introduction of pentanol to biodiesel reduces the unburned hydrocarbon (2.1-3.6%) and carbon monoxide emissions (3.1-4.2%) considerably. In addition, at 20% EGR rate, smoke, NO emissions, and BTE drop by 7.8, 5.1, and 4.4% respectively. However, CO, HC emissions, and BSFC increased by 2.1, 2.8, and 3.8%, respectively, when compared to 0% EGR rate.
在这项研究中，考察了将戊醇混入麻疯树油生物柴油中对废气再循环（EGR）模式下柴油机排放和性能的影响，并与柴油进行了比较。本研究的目的是提高生物燃料作为未经修改的柴油机潜在替代燃料的可行性。研究发动机使用两种戊醇-生物柴油混合物，分别表示为 MOBD90P10 和 MOBD80P20，分别对应生物柴油中戊醇的 10 和 20 体积%，在 10%和 20%EGR 率下使用。戊醇被选为更高的醇，因为它的内在性质比其他第一代醇如乙醇或甲醇有所提高。实验结果表明，戊醇和生物柴油混合物（MOBD90P10 和 MOBD80P20）在所有发动机负荷下的制动热效率（0.2-0.4%）略高，比纯生物柴油（MOBD100）的制动比油耗（0.6 至 1.1%）略低。与纯生物柴油相比，戊醇和生物柴油混合物的氮氧化物（NOx）排放和烟度排放分别减少了 3.3-3.9%和 5.1-6.4%。将戊醇引入生物柴油可大大减少未燃烧的碳氢化合物（2.1-3.6%）和一氧化碳排放（3.1-4.2%）。此外，在 20%EGR 率下，烟度、NO 排放和 BTE 分别下降了 7.8%、5.1%和 4.4%。然而，与 0%EGR 率相比，CO、HC 排放和 BSFC 分别增加了 2.1%、2.8%和 3.8%。
