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富氢HCNG发动机一维数值模拟研究

DOI: 10.3969/j.issn.1674-0696.2014.02.33, PP. 146-149

Keywords: 车辆工程,HCNG发动机,一维数值模拟,压缩比,气门重叠角,vehicleengineering,HCNGengine,onedimensionalsimulationnumericalsimulation,compressionratio,valveoverlap

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Abstract:

:?为防止HCNG发动机回火,提高仿真模型计算精度,针对台架发动机的结构和试验参数,利用AVLBOOST软件建立富氢HCNG发动机简化模型。研究不同压缩比ε和配气相位对发动机的性能影响。模拟结果表明:提高压缩比可以提高发动机的动力性及经济性;减少气门重叠角使发动机的充气效率降低,动力性和经济性略有下降。在提高发动机压缩比的同时减小气门重叠角可以防止富氢HCNG发动机回火。

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