环境友好型生物柴油/柴油混合物，可改善废气排放和发动机性能，减少运输车队排放的污染物。
Environment-Friendly Biodiesel/Diesel Blends for Improving the Exhaust Emission and Engine Performance to Reduce the Pollutants Emitted from Transportation Fleets.
机构信息
Department of Chemistry and Biofuels Research Laboratory, Centre for Alternate Energy Research, R&D, University of Petroleum and Energy Studies, Dehradun 248007, Uttarakhand, India.
Department of Mechanical Engineering and Biofuels Research Laboratory, Centre for Alternate Energy Research, R&D, University of Petroleum and Energy Studies, Dehradun 248007, Uttarakhand, India.
出版信息
Int J Environ Res Public Health. 2020 May 31;17(11):3896. doi: 10.3390/ijerph17113896.
Biodiesel derived from biomass is a renewable source of fuel, and global application of biodiesel in the transport sector has rapidly expanded over the last decade. However, effort has been made to overcome its main shortcoming, i.e., efficiency and exhaust emission characteristics (NOx emissions) in unmodified diesel engines. Biodiesel combustion generally results in lower unburned hydrocarbons (HC), carbon monoxide (CO), and particulate matter (PM) in exhaust emissions compared to fossil diesel. In this study, various biodiesel blends ( and ) were investigated for fuel characteristics, and engine performance with exhaust emission compared to diesel. , and biodiesel were synthesized by the acid-base transesterification approach in a microwave reactor and blended with conventional diesel fuel by volume. The fuel blends were denoted as MB10 (90% diesel + 10% microalgae biodiesel), MB20 (80% diesel + 20% microalgae biodiesel), JB10 (90% diesel + 10% jatropha biodiesel), JB20 (80% diesel + 20% jatropha biodiesel), PB10 (90% diesel + 10% polanga biodiesel) and PB20 (80% diesel + 20% polanga biodiesel). Experiments were performed using these fuel blends with a single-cylinder four-stroke diesel engine at different loads. It was shown in the results that, at rated load, thermal efficiency of the engine decreased from 34.6% with diesel to 34.1%, 33.7%, 34.1%, 34.0%, 33.9%, and 33.5% with MB10, MB20, JB10, JB20, PB10, and PB20 fuels, respectively. Unburned hydrocarbon, carbon monoxide and smoke emissions improved with third-generation fuels (MB10, MB20) in comparison to base diesel fuel and second-generation fuels (JB10, JB20, PB10 and PB20). Oxides of nitrogen emissions were slightly increased with both the third- and second-generation fuels as compared to the base diesel. The combustion behavior of microalgae biodiesel was also very close to diesel fuels. In the context of comparable engine performance, emissions, and combustion characteristics, along with biofuel production yield (per year per acre), microalgae biodiesel could have a great potential as a next-generation sustainable fuel in compression engine (CI) engines compared to jatropha and polanga biodiesel fuels.
生物柴油来源于生物质，是一种可再生燃料，在过去十年中，生物柴油在交通运输领域的全球应用迅速扩大。然而，人们一直在努力克服其主要缺点，即在未经改进的柴油发动机中的效率和废气排放特性（NOx 排放）。与化石柴油相比，生物柴油的燃烧通常会导致废气中未燃烧的碳氢化合物（HC）、一氧化碳（CO）和颗粒物（PM）减少。在这项研究中，研究了各种生物柴油混合物（和）的燃料特性，并与柴油相比研究了发动机性能和废气排放。通过酸-碱转酯化方法在微波反应器中合成和，并按体积与常规柴油燃料混合。燃料混合物分别表示为 MB10（90%柴油+10%微藻生物柴油）、MB20（80%柴油+20%微藻生物柴油）、JB10（90%柴油+10%麻疯树生物柴油）、JB20（80%柴油+20%麻疯树生物柴油）、PB10（90%柴油+10%波朗加生物柴油）和 PB20（80%柴油+20%波朗加生物柴油）。在不同负荷下，使用这些燃料混合物在单缸四冲程柴油机上进行了实验。结果表明，在额定负荷下，与柴油相比，发动机的热效率从 34.6%下降到 MB10、MB20、JB10、JB20、PB10 和 PB20 燃料的 34.1%、33.7%、34.1%、34.0%、33.9%和 33.5%。与基础柴油相比，第三代燃料（MB10、MB20）可改善未燃烧的碳氢化合物、一氧化碳和烟雾排放，而第二代燃料（JB10、JB20、PB10 和 PB20）则不然。与基础柴油相比，第三代和第二代燃料的氮氧化物排放量都略有增加。微藻生物柴油的燃烧行为也与柴油燃料非常接近。在可比的发动机性能、排放和燃烧特性以及生物燃料产量（每亩每年）的背景下，与麻疯树和波朗加生物柴油相比，微藻生物柴油作为下一代可持续压燃式（CI）发动机燃料具有很大的潜力。
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