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首页> 外文会议>Proceedings of the 2009 spring technical conference of the ASME Internal Combustion Engine Division >REDUCTION OF NO_X AND CO EMISSIONS IN STOICHIOMETRIC DIESEL COMBUSTION USING A 3-WAY CATALYST
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REDUCTION OF NO_X AND CO EMISSIONS IN STOICHIOMETRIC DIESEL COMBUSTION USING A 3-WAY CATALYST

机译：使用三元催化剂减少化学计量柴油燃烧中的NO_x和CO排放

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摘要

Experimental and numerical studies were performed to investigate the simultaneous reduction of NOx and CO for stoichiometric diesel combustion with a 3-way catalyst. A single-cylinder engine was used for the experiments and KIVA simulations were used in order to characterize the combustion efficiency and emissions of throttled stoichiometric diesel combustion at 0.7 bar boost pressure and 90MPa injection pressure. In addition, the efficiency of emission conversion with the 3-way catalysts in stoichiometric diesel combustion was investigated experimentally.rnThe results showed CO and NOx emissions can be controlled with the 3-way catalyst in spite of the fact that CO increases more at high equivalence ratios compared to conventional diesel combustion (i.e., lean combustion). At stoichiometric operation, the 3-way catalyst reduced CO and NOx emissions by up to 95%, which achieves lower emissions compared to conventional diesel combustion or low temperature diesel combustion, while keeping better fuel consumption than a comparable gasoline engine.
机译：进行了实验和数值研究，以研究用三效催化剂同时还原化学计量柴油燃烧中的NOx和CO。实验使用单缸发动机，并使用KIVA模拟来表征在0.7 bar增压压力和90MPa喷射压力下的节流化学计量柴油燃烧效率和排放。此外，还通过实验研究了三元催化器在化学计量柴油燃烧中的排放转换效率.rn结果表明，尽管CO在高当量下会增加，但三元催化器仍可控制CO和NOx排放与常规柴油燃烧（即稀薄燃烧）相比的比率。在化学计量运行时，三元催化剂可将CO和NOx排放量减少多达95％，与传统的柴油燃烧或低温柴油燃烧相比，可实现更低的排放，同时保持比同类汽油发动机更好的燃料消耗。

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