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  • 标题:Influence of initial charge conditions on engine performance and emission of a DISI hydrogen-fueled engine under various injection timings
  • 本地全文:下载
  • 作者:VAHID FATHI ; ARASH NEMATI ; SAMAD JAFARMADAR
  • 期刊名称:Turkish Journal of Engineering and Environmental Sciences
  • 印刷版ISSN:1300-0160
  • 电子版ISSN:1303-6157
  • 出版年度:2011
  • 卷号:35
  • 期号:03
  • 页码:339-352
  • 出版社:Scientific and Technical Research Council of Turkey
  • 摘要:Using hydrogen as an alternative fuel in spark-ignition engines has great potential for reducing exhaust emissions. Hydrogen engines have CO2- and HC-free combustion and lean operation, offering lower nitrogen oxide (NOx) emission. In this paper, a numerical study of a direct injection spark-ignition (DISI) hydrogen-fueled engine was conducted via 3-dimensional computational fluid dynamics (CFD) methods and results were compared with experimental data, showing good agreement. Injection timing, initial charge temperature, and initial charge pressure were selected as effective and controllable parameters of emissions and performance characteristics. Results showed that mixture homogeneity was more affected by injection timing, and advancing the injection timing led to improved engine performance with a slight increase in NOx emissions. Increasing the initial pressure and decreasing the initial temperature led to better engine performance and reduced NOx emissions in the DISI hydrogen-fueled engine.

  • 关键词:Hydrogen engine, DISI, initial condition, NOx emission
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