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以降低柴油机的排放为目的，首先在GT-SUITE软件中建立某内燃机车柴油机单缸机模型，并与3种不同针阀结构(原机针阀和两种优化针阀)的喷油器进行耦合，通过对比仿真试验来研究其NOx、CO、SOOT和HC排放物的大小。其次对得到的仿真数据进行分析，找到最佳的针阀结构如压力室容积、喷孔直径、蓄压腔容积以及喷孔夹角参数。其中对压力室的优化效果最为显著，除NOx排放量略有增加外，CO、SOOT、HC分别下降了60.9%、64.7%、73.0%。最后综合3种针阀的排放物变化趋势，提出了多种降低排放以满足排放法规的方法。
Abstract：In order to reduce the emissions of diesel engines, so as to meet the international emission regulations for diesel engines, a single-cylinder model of diesel engine of diesel locomotive was established in GT-SUITE software, and coupled with the injectors of three different needle valve structures(original needle valve and two optimized needle valves), and the size of NOx, CO, soot and HC emissions was studied by comparing simulation experiments. After that, the obtained simulation data were analyzed to find the optimal needle valve structure, such as the pressure chamber volume, the diameter of the nozzle, the volume of the pressure accumulator, and the parameters of the nozzle angle. Except for a slight increase in NOx emissions, CO, SOOT and HC decreased by 60.9%, 64.7% and 73.0%. Finally, the emission trends of the three needle valves are synthesized, providing a variety of ways to reduce emissions to meet emission regulations.
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基本信息:
DOI：10.13291/j.cnki.djdxac.2026.03.008
中图分类号:TK421.5
引用信息:
[1]崔洪江,刘圣,赵海龙,等.喷油器对某柴油机排放影响模拟研究[J].大连交通大学学报,2026,47(03):70-76.DOI:10.13291/j.cnki.djdxac.2026.03.008.
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