Periodically regenerating diesel particulate filter with a hydrogen/carbon monoxide mixture addition
Periodically regenerating diesel particulate filter with a hydrogen/carbon monoxide mixture addition
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DOI：
10.1016/j.ijhydene.2011.11.062
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发表时间：
2012-02
影响因子：
7.2
通讯作者：
S. Hemmings;A. Megaritis
中科院分区：
文献类型：
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作者：
S. Hemmings;A. Megaritis
本研究分析了在柴油颗粒过滤器 (DPF) 上游引入 H2/CO 混合物的影响，以试图支持再生过程。混合物的引入是通过各种定期策略实现的，试图减少所需混合物的体积，同时仍保持熟练的再生质量。除此之外，还研究了空速和发动机负载对再生过程的影响。实验数据表明，混合物的添加通过放热反应提高过滤器温度来支持再生过程。最有益的喷射策略每 20 秒将混合物引入 DPF，每次喷射持续 10 秒。该策略所需的混合物体积比恒定喷雾策略少 50%，但仍具有相似的再生能力。除此之外，值得注意的是，空速的降低降低了温度升高的速率，但提高了峰值过滤器温度，从而提高了再生效率。还值得注意的是，发动机负载的减少降低了平均过滤器温度，但总体而言对再生过程的影响很小。
This investigation analyses the effect of introducing a H2/CO mixture, upstream of a diesel particulate filter (DPF), in an attempt to support the regeneration process. The introduction of the mixture was achieved via various periodic strategies in an attempt to reduce the volume of mixture required while still maintaining proficient regeneration qualities. In addition to this, the effect of space velocity and engine load on the regeneration process was also investigated. The experimental data showed that the mixture addition supported the regeneration process by increasing the filter temperature via an exothermic reaction. The most beneficial spraying strategy introduced the mixture to the DPF every 20s, with each injection event lasting for a period of 10s. This strategy required 50% less mixture volume than the constant spray strategy but still induced similar regeneration capabilities. In addition to this, it was noted that a decrease in space velocity reduced the rate of temperature increase but improved the peak filter temperature resulting in increased regeneration proficiency. It was also noted that a reduction in engine load reduced the mean filter temperature but overall had minimal effect on the regeneration process.