Feasibility investigation of Low-Temperature reforming technology on a GCI engine
Feasibility investigation of Low-Temperature reforming technology on a GCI engine
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DOI：
10.1016/j.fuel.2023.127959
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发表时间：
2023
期刊：
影响因子：
7.4
通讯作者：
Long Liu;Qunhai Cao;Yang Wang
中科院分区：
文献类型：
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作者：
Long Liu;Qunhai Cao;Yang Wang
重整技术可以将燃料转化为小分子。然而，与传统的催化重整方法不同，低温重整（LTR）技术是一种无催化剂的重整燃料。本工作将LTR技术与汽油压缩点火（GCI）发动机耦合，探索其应用潜力。首先，研究了边界条件对重整过程的影响：随着重整当量比和重整量的增加，重整产物中CH_3CHO、CO和CO_2的浓度增加。其次，研究了重整产物（变边界条件）对燃烧过程的影响：重整产物的加入使燃烧相位提前，燃烧持续期缩短，缸内峰值压力和压力上升率降低。随着重整当量比的减小，缸内峰值压力逐渐升高，而PRR逐渐降低，燃烧持续期也逐渐缩短。随着重整比例的增加，缸内峰值压力和PRR逐渐降低，燃烧持续期缩短。最后，对LTR技术在GCI发动机上的应用性能进行了综合评价。
Reforming technology can convert fuel into small molecules. However, different from the conventional catalytic reforming methods, low-temperature reforming (LTR) technology reforming fuel without catalyst. In this work, LTR technology and gasoline compression ignition (GCI) engine coupling, explore the application potential. First, study on the influence of boundary conditions on reforming process: with the increase of reforming equivalence ratios and reforming quantities, the concentration of CH3CHO, CO and CO2in reformed products would increase. Next, study on the effect of reforming products (variable boundary condition) on combustion process: the addition of reformed products could advance the combustion phase, shorten the combustion duration, and reduce the in-cylinder peak pressure and pressure rise rate (PRR). Moreover, with the decrease of reforming equivalent ratio, the in-cylinder peak pressure increased, but the PRR gradually reduced, and the combustion duration was also shortened. With the increase of reforming proportion, the in-cylinder peak pressure and PRR were gradually decreased, and the combustion duration was also shortened. Finally, the application performance of LTR technology in GCI engine was evaluated comprehensively.