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SUN Bai-gang, DUAN Jun-fa, LIU Fu-shui. NOx emission characteristics of hydrogen internal combustion engine[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2014, 23(3): 339-344.
Citation: SUN Bai-gang, DUAN Jun-fa, LIU Fu-shui. NOxemission characteristics of hydrogen internal combustion engine[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2014, 23(3): 339-344.
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NOxemission characteristics of hydrogen internal combustion engine

  • School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

  • Received Date:2013-04-27
    Abstract
  • In order to investigate the NO xemission of hydrogen internal combustion engines. A test system for four-cylinder intake port-fuel-injection hydrogen internal combustion engine(H 2ICE) is established to study the effect of fuel-air equivalence ratio, ignition advance angle,engine speed and exhaust gas recirculation on NO xemission. Experimental results show that the fuel-air equivalence ratio is the key factor to NO xemission,NO xemission concentration is always higher than 8.000×10 -6when the fuel-air equivalence ratio is larger than 0.8 and lower than 500×10 -6when the fuel-air equivalence ratio is smaller than 0.5. The ignition advance angle and engine speed also play important roles on NO xemission formation.EGR is an useful method to reduce NO xemission concentration at large fuel-air equivalence ratio especially when engine speed is low and EGR ratio is high.
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