Effects of low-temperature reforming products of PRF50 on combustion and emission characteristics in an HCCI engine
Effects of low-temperature reforming products of PRF50 on combustion and emission characteristics in an HCCI engine
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PRF50低温重整产物对HCCI发动机燃烧和排放特性的影响
DOI：
10.1016/j.applthermaleng.2019.01.088
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发表时间：
2019-03
影响因子：
6.4
通讯作者：
Mingfa Yao
中科院分区：
文献类型：
--
作者：
Yang Wang;Hu Wang;Mingfa Yao
本文在重整温度为450 ~ 750 K的条件下，研究了燃料外部重整系统在HCCI发动机上的应用。在一台单缸发动机上进行了燃用PRF 50的试验研究，并利用CHEMKIN软件进行了相关的仿真分析。600 K是重整产物的转变温度，在此温度下重整产物的组成发生了不同程度的变化。研究结果揭示了外部重整器的重整温度对发动机燃烧相位的影响：当温度低于600 K时，引入重整产物可以提前发动机燃烧相位，反之亦然。在低于650 K时，加入重整产物可提高燃烧稳定性（CoVIMEP< 5%）。通过合理控制外重整器的操作条件，可以降低CO和UHC的排放，同时也可以提高指示热效率4%（44%）。
In this study, the application of external fuel reforming system in an HCCI engine has been investigated at the reforming temperature from 450 to 750 K. Experiments were conducted in a single-cylinder engine fueled with PRF50, and related simulation analysis was conducted with CHEMKIN package. The temperature of 600 K was the transition point for reformed products, and the composition of reformed products changed variously at this temperature. The results of which reveal the affection of reforming temperature of the external reformer to engine combustion phasing: When the temperature was lower than 600 K, the engine combustion phasing could be advanced by introducing reformed products, and vice versa. The combustion stability could be improved (CoVIMEP< 5%) with reformed products when the temperature was lower than 650 K. By reasonably controlling the operating condition of external reformer, CO and UHC emissions could be reduced, and the indicated thermal efficiency could also be improved by 4% (44%).
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