Diesel Engine Exhaust Gas Treatment Technology Using NOx Recirculation Technique
Diesel Engine Exhaust Gas Treatment Technology Using NOx Recirculation Technique
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DOI：
10.5988/jime.56.824
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发表时间：
2021-09
期刊：
影响因子：
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通讯作者：
So Hirano;Yuya Shimizu;T. Kuroki;M. Okubo
中科院分区：
文献类型：
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作者：
So Hirano;Yuya Shimizu;T. Kuroki;M. Okubo
在这项研究中，我们已经评估了NOx还原性能的废气成分再循环（EGCR）系统进行实验和数值模拟。在该系统中，NOx从柴油发动机废气中分离并使用吸附剂浓缩，然后浓缩的NOx混合到柴油发动机进气中。在实验中，在EGCR系统中的吸附和解吸过程中浓缩的NOx通过使用NO气缸来模拟，并将其供应到柴油机的进气中，以阐明NOx供应对NOx还原的影响。结果表明，进气中NOx的供给量越多，NOx的生成量越少，低负荷运行时NOx的还原效果越显著。在数值模拟中，我们评估了EGCR系统的影响，使用我们开发的模型的基础上，从柴油机在实验中的数据时，NOx供应到进气。并将实验结果与数值模拟结果进行了比较。
In this study, we have evaluated NOx reduction performance of the exhaust gas component recirculation (EGCR) system by conducting an experiment and a numerical simulation. In this system, NOx is separated from diesel engine exhaust gas and concentrated using adsorbents, and then concentrated NOx is mixed into diesel engine intake air. In the experiment, NOx concentrated during the adsorption and desorption processes in the EGCR system was simulated by using a NO cylinder and it was supplied into the intake air of a diesel engine to elucidate the effect of the NOx supply on NOx reduction. The results showed that the more NOx was provided into the intake, the less NOx was produced, and that NOx reduction effects were more prominent during low load operation. In the numerical simulation, we evaluated the impact of the EGCR system using a model we developed based on data from the diesel engine in the experiment when NOx was supplied into the intake air. Then we compared the results of the experiment and those of the numerical simulation.