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通过进气道喷水降低柴油机NO_X排放 被引量:8

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摘要 对一台4缸四冲程直喷式增压柴油机进行了在吸气行程初期从进气道喷水以降低NOX生成量的试验研究,并采用2区域模型法进行计算分析,对比了试验与计算结果。研究表明,在进气绝对湿度换算值为0.035kg/kg空气时,约可降低NOX浓度50%,而且上述效果与柴油机工况条件及喷射定时无关,只取决于进气的绝对湿度。NOX生成量减少的主要原因是燃烧气体中所含水分引起比热增大而导致燃气温度降低。
出处 《国外内燃机车》 1999年第1期36-43,共8页 Foreign Diesel Locomotive
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