喷孔直径对PFI氢内燃机燃烧和排放特性的影响
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摘要
通过对一台双孔对置式PFI氢内燃机进行三维数值模拟,对比分析了不同喷孔直径下氢内燃机混合气形成质量及缸内燃烧和排放特性。结果表明:随着喷孔直径的增加,缸内混合气均匀性系数逐渐降低,而缸内最大压力、最高温度、瞬时放热率、累积放热量和NOx排放均呈先增大后减小趋势。
In this paper,based on a symmetric double injector of PFI hydrogen internal combustion engine(HICE) system. And the quality of hydrogen-air mixture、combustion and emission characteristics of hydrogen internal combustion engine under different injector orifice were analyzed by uesing 3D numerical simulation method. It was found that the uniformity coefficient of mixture decrease with the increase of injector orifice, but the maximal pressure and temperature in cylinder, rate of heat release, accumulated heat release and NOx emission increasing first and then decreasing.
In this paper,based on a symmetric double injector of PFI hydrogen internal combustion engine(HICE) system. And the quality of hydrogen-air mixture、combustion and emission characteristics of hydrogen internal combustion engine under different injector orifice were analyzed by uesing 3D numerical simulation method. It was found that the uniformity coefficient of mixture decrease with the increase of injector orifice, but the maximal pressure and temperature in cylinder, rate of heat release, accumulated heat release and NOx emission increasing first and then decreasing.
引文
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[6]Antonella Ingenito.NOx reduction strategies for high speed hydrogen fueledvehicles[J].International Journal of Hydrogen Energy.2015,40:5186-5196.
[2]Veziroglu T N.Hydrogen movement and the next action:Fossil fuel industry and sustainable economics[J].International Journal of Hydrogen Energy.1997,22:551-556.
[3]Fanhua Ma.Effect of compression ratio and spark timing on the power performance and combustion characteristics of an HCNG engine[J].International Journal of Hydrogen Energy.2012,37:18486-18491.
[4]杨振中.点火提前角对氢发动机性能的影响及智能控制技术[J].太阳能学报.2003,24(4):518-522.
[5]Sun Baigang.NOx emission characteristics of hydrogen internal combustion engine[J].Journal of Beijing Institute of Technology.2014,23(3):339-344.
[6]Antonella Ingenito.NOx reduction strategies for high speed hydrogen fueledvehicles[J].International Journal of Hydrogen Energy.2015,40:5186-5196.