Influence of alternative fuels on combustion and characteristics of particulate matter morphology in a compression ignition diesel engine
Influence of alternative fuels on combustion and characteristics of particulate matter morphology in a compression ignition diesel engine
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DOI：
10.1016/j.renene.2019.10.079
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发表时间：
2020-04-01
期刊：
影响因子：
8.7
通讯作者：
Martos, Francisco J.
中科院分区：
文献类型：
--
作者：
Fayad, Mohammed A.;Tsolakis, Athanasios;Martos, Francisco J.
燃烧的改善和有害排放的减少受到多种因素的推动;替代燃料可能是重要因素之一。在本研究中，以天然气转油（GTL）及乙醇-RME-柴油混合燃料作为替代燃料，在一台单缸柴油机上进行了试验。研究了替代燃料对颗粒物（PM）特性和气体排放的影响。这些结果表明，乙醇混合物增加缸内压力和放热率（ROHR）相比，GTL和柴油分别为4%和13%。与柴油和GTL燃料相比，乙醇混合燃料燃烧的颗粒尺寸分布（PSD）较小。实验结果表明，乙醇混合燃料生成的碳烟颗粒尺寸较小，碳烟初级粒子数（n（po））较低。此外，可以观察到，从乙醇混合物排放的碳烟颗粒具有较少的球形形状，由于较小的分形维数（D-f）比柴油和GTL燃料。结果表明，GTL燃料的NOx排放量低于乙醇混合燃料和柴油。(C)2019爱思唯尔有限公司版权所有。
The improvement of combustion and harmful emissions reduction has been driven by multiple factors; alternative fuels can be one of the important factors. In this study, Gas-to-Liquid (GTL) and Ethanol-RME-Diesel blend are used as an alternative fuels in a single cylinder diesel engine. The impact of alternative fuel on particulate matter (PM) characteristics and gaseous emissions were studied. These results reveal that ethanol blend increases the in-cylinder pressure and rate of heat release (ROHR) compared to the GTL and diesel fuel by 4% and 13% respectively. The particulate size distribution (PSD) was smaller from the combustion of ethanol blend compared to diesel and GTL fuel. The experimental results indicated that the ethanol blend produces smaller size of soot agglomerate and lower number of soot primary particles (n(po)) than to the rest of fuel. Furthermore, it can be observed that the soot particles emitted from ethanol blend has less spherical shape due to smaller fractal dimension (D-f) than to the diesel and GTL fuel. It is found that the NOx emissions were lower from the combustion of GTL fuel than ethanol blend and diesel fuel. (C) 2019 Elsevier Ltd. All rights reserved.