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首页> 外文期刊>Arabian Journal for Science and Engineering. Section A, Sciences >Experimental Analysis of Synergetic Effect of Part‑Cooled Exhaust Gas Recirculation on Magnetic Field‑Assisted Combustion of Liquefied Petroleum Gas
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Experimental Analysis of Synergetic Effect of Part‑Cooled Exhaust Gas Recirculation on Magnetic Field‑Assisted Combustion of Liquefied Petroleum Gas

机译：部分冷却废气再循环对液化石油气磁场辅助燃烧的协同作用的实验分析

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Magnetic field-assisted combustion has been under the focus of research for the last three decades around the globe. The effects of strong uniform and gradient magnetic fields on flame development, behaviour and propagation have been studied, and their applications have been experimented on Internal Combustion Engines. The present work investigates the synergetic effect of part-cooled EGR on the magnetic field-assisted combustion of liquefied petroleum gas in a multicylinder MPFI spark-ignited engine modified for neat LPG operation. Sintered neo-delta magnets with radial magnetization pattern of four different magnetic intensities (0G, 3200G, 4800G and 6400G) are fastened to the fuel line near to the gas injector with a non-magnetic stainless steel integument to prevent any loss of magnetic intensities during the operation. A portion of the exhaust gas is channelled to an intercooler and an optimum percentage of the partially cooled gases are inducted into the inlet manifold for combustion. The experimental study concludes that the optimum flow rate of part-cooled EGR acts synergistically with the applied magnetic fields to enhance the combustion characteristics of LPG emanating an improved fuel economy of 13.8% and brake thermal efficiency of 3.9%. The increased emission of oxides of Nitrogen which is the major setback of LPG combustion can be addressed through the combined effect of part-cooled EGR and magnetic field-assisted combustion. Moreover, the reduction in stability of combustion through the recirculation of exhaust can also be balanced by the applied magnetic field.
机译：磁场辅助燃烧一直在全球过去三十年的研究焦点。研究了强大均匀和梯度磁场对火焰开发，行为和传播的影响，并在内燃机上进行了实验。本作本作研究了部分冷却EGR对液化石油气中液化石油气的磁场辅助燃烧的协同作用，用于整齐的LPG操作改性的多晶片MPFI火花点火发动机。具有四种不同磁强度（0g，3200g，4800g和6400g）的径向磁化图案的烧结新达磁体被固定在靠近气体喷射器附近的燃料管线，用非磁性不锈钢单元，以防止在此期间的任何磁强度损失操作。排气的一部分被引导到中间冷却器，并且部分冷却的气体的最佳百分比被电感入入口歧管以燃烧。实验研究得出结论，部分冷却EGR的最佳流量与施加的磁场协同作用，以增强LPG的燃烧特性，其提高燃油经济性为13.8％，制动热效率为3.9％。通过部分冷却的EGR和磁场辅助燃烧的综合作用，可以解决是LPG燃烧的主要挫伤的氮的增加。此外，通过施加的磁场也可以平衡通过排气再循环的燃烧稳定性的降低。

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