Experimental study of n-butanol additive and multi-injection on HD diesel engine performance and emissions
Experimental study of n-butanol additive and multi-injection on HD diesel engine performance and emissions
复制标题
正丁醇添加剂及多次喷射对HD柴油机性能和排放的实验研究
DOI：
10.1016/j.fuel.2010.04.008
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发表时间：
2010-09-01
期刊：
影响因子：
7.4
通讯作者：
Yue, Yan
中科院分区：
文献类型：
--
作者：
Yao, Mingfa;Wang, Hu;Yue, Yan
通过试验研究了柴油正丁醇含量对多喷重型直喷柴油机性能和排放的影响。在发动机转速和负荷固定的情况下，调整废气再循环率，使NO(x)排放量保持在2.0 g/kW h。使用不同体积量（0%、5%、10%和15%）正丁醇的柴油。结果表明，在一定比NO(x)排放条件下，添加正丁醇能显著改善油烟和CO排放，而对制动比油耗和NO(x)没有严重影响。使用混合燃料时先导和后喷对发动机特性的影响与使用纯柴油时相似。早期中试喷射减少了烟尘排放，但导致CO的急剧增加，后喷射有效地减少了烟尘和CO的排放。在每一种喷射策略下，燃油正丁醇含量的增加导致烟尘的进一步减少。在本研究中使用的最高正丁醇分数的三次喷射策略提供了最低的烟尘排放。(C) 2010 Elsevier Ltd.版权所有。
Experimental study was conducted to investigate the influence of the diesel fuel n-butanol content on the performance and emissions of a heavy duty direct injection diesel engine with multi-injection capability. At fixed engine speed and load, exhaust gas recirculation rates were adjusted to keep NO(x) emission at 2.0 g/kW h. Diesel fuels with different amounts (0%, 5%, 10% and 15% by volume) of n-butanol were used. The results show that the n-butanol addition can significantly improve soot and CO emissions at constant specific NO(x) emission without a serious impact on the break specific fuel consumption and NO(x). The impacts of pilot and post injection on engine characteristics by using blended fuels are similar to that found by using pure diesel. Early pilot injection reduces soot emission, but results in a dramatic increase of CO. Post injection reduces soot and CO emissions effectively. Under each injection strategy, the increase of fuel n-butanol content leads to further reduction of soot. A triple-injection strategy with the highest n-butanol fraction used in this study offers the lowest soot emission. (C) 2010 Elsevier Ltd. All rights reserved.