Experimental investigation on different injection strategies in a heavy-duty diesel engine: Emissions and loss analysis
Experimental investigation on different injection strategies in a heavy-duty diesel engine: Emissions and loss analysis
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DOI：
10.1016/j.enconman.2010.06.074
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发表时间：
2011-01-01
影响因子：
10.4
通讯作者：
Sankowski, A.
中科院分区：
文献类型：
--
作者：
Thurnheer, T.;Edenhauser, D.;Sankowski, A.
在一台重型柴油机上进行了不同喷油策略的试验研究。特别是，考虑了试点/主要、后/主要和单一主要注射战略。发动机转速、负荷、废气再循环率和相对空燃比保持不变，而预喷和喷油后的燃油质量和喷油定时不同。对于每一次测量，都进行了放热和详细的损失分析，以比较不同的喷射策略对燃料转换过程及其相关效率的影响。众所周知，燃油转换效率很大程度上取决于喷油正时，特别是主喷油正时。然而，详细的损失分析表明，燃料转换效率在很大程度上分别取决于实际燃烧和壁面热损失之间的相互作用。为了完成分析，比较了不同喷射设置下的氮氧化物排放量、碳烟质量和颗粒物数量。(C)2010爱思唯尔有限公司。保留所有权利。
Experiments were carried out to investigate different injection strategies on a heavy-duty diesel engine. In particular, pilot/main, post/main and single main injection strategies were considered. Engine speed, load, exhaust gas recirculation rate and relative air/fuel ratio were held constant, whereas pilot and post injection fuel masses and injection timings were varied. For each measurement, heat release and detailed loss analyses were carried out to compare the influence of different injection strategies on the fuel conversion process and its associated efficiencies. As it is known, fuel conversion efficiency depends strongly on the injection timing, in particular on the main injection timing. However, the detailed loss analysis reveals that fuel conversion efficiency is largely determined by the interaction between real combustion and wall heat losses, respectively. To complete the analysis, emissions of nitric oxides, soot mass and particle number of the different injection settings are compared. (C) 2010 Elsevier Ltd. All rights reserved.