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Effect of EGR (exhaust gas recirculation) in diesel engine with multi-walled carbon nanotubes and vegetable oil refinery waste as biodiesel
Fuel ( IF 6.7 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.fuel.2020.119689
V. Manieniyan , V. Velumani , R. Senthilkumar , S. Sivaprakasam

Abstract In diesel engines, emissions are the main problem. To reduce the engine emission by different methods, like as, after treatment of exhaust gases, operating parameters, design parameters, in-cylinder combustion control and fuel modification are used. This study is aimed to concurrently study the use of biodiesel blends with a multi walled carbon nanotube and EGR to minimize pollution from all diesel engine governed pollutants. The experimental investigation was conducted an analysis the emission, vibration character and the impact on the engine performance by using Exhaust Gas Recirculation (EGR) using multi-walled carbon nanotubes (MWCNT) with 20% biodiesel blend (optimum blend MWCNT30ppmB20EESAO) and diesel with various EGR ratios (5%, 10%, 15% and 20%). The engine vibration is measured at three different places, including Head, Crank and Bottom of the engine. The engine vibration is measured in terms of acceleration. The maximum brake thermal efficiency was 29.78% and lesser SFC 0.241 kg/kW-hr at EGR 5%. The EGR5% overall 2.2% is increased in BTE and 3.1% is decreased in SFC compare to the other EGR ratio. Similarly the emission parameter the NOx is reduced in 21.06% at EGR 20%, but other emission CO in 5.2%, HC in 6.2% and smoke density 4.34% at EGR 5%. The minimum acceleration was 219.11 m/sec2 for head, 126.13 m/sec2 for crank, and 80.54 m/sec2 for bottom in MWCNT30ppmB20EESAO blend at 20% load.

中文翻译:

EGR(废气再循环)在多壁碳纳米管和植物油精炼废料作为生物柴油的柴油发动机中的影响

摘要 在柴油发动机中,排放是主要问题。为了通过不同的方法减少发动机排放,如废气后处理,使用运行参数、设计参数、缸内燃烧控制和燃料修改。本研究旨在同时研究生物柴油混合物与多壁碳纳米管和 EGR 的使用,以最大限度地减少所有柴油发动机控制污染物的污染。实验研究通过使用多壁碳纳米管 (MWCNT) 和 20% 生物柴油混合物 (最佳混合物 MWCNT30ppmB20EESAO) 和柴油与各种不同的燃料进行废气再循环 (EGR) 分析,分析排放、振动特性和对发动机性能的影响。 EGR 比率(5%、10%、15% 和 20%)。发动机振动在三个不同的地方测量,包括 Head、发动机的曲柄和底部。发动机振动是根据加速度来测量的。最大制动热效率为 29.78%,较低的 SFC 为 0.241 kg/kW-hr,EGR 为 5%。与其他 EGR 比率相比,BTE 中的 EGR5% 总体上增加了 2.2%,SFC 中减少了 3.1%。类似地,排放参数 NOx 在 EGR 20% 时降低 21.06%,但其他排放 CO 为 5.2%,HC 为 6.2%,烟气密度为 4.34%,EGR 为 5%。在 MWCNT30ppmB20EESAO 混合物中,在 20% 负载下,头部的最小加速度为 219.11 m/sec2,曲柄为 126.13 m/sec2,底部为 80.54 m/sec2。类似地,排放参数 NOx 在 EGR 20% 时降低 21.06%,但其他排放 CO 为 5.2%,HC 为 6.2%,烟气密度为 4.34%,EGR 为 5%。在 MWCNT30ppmB20EESAO 混合物中,在 20% 负载下,头部的最小加速度为 219.11 m/sec2,曲柄为 126.13 m/sec2,底部为 80.54 m/sec2。类似地,排放参数 NOx 在 EGR 20% 时降低 21.06%,但其他排放 CO 为 5.2%,HC 为 6.2%,烟气密度为 4.34%,EGR 为 5%。在 MWCNT30ppmB20EESAO 混合物中,在 20% 负载下,头部的最小加速度为 219.11 m/sec2,曲柄为 126.13 m/sec2,底部为 80.54 m/sec2。
更新日期:2021-03-01
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