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Influence on the performance and emissions of an automotive Euro 5 diesel engine fueled with F30 from Farnesane

机译：对法呢烷F30燃料的汽车Euro 5柴油发动机的性能和排放的影响

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摘要

The effects of using a 30% by volume blend of a renewable fuel, called Farnesane, and fossil diesel in a small Euro 5 displacement passenger car diesel engine have been evaluated in this paper.Farnesane is a 15-carbon long molecule that can be obtained from the fermentation of biomass-derived sugars (such as sugar cane, amidaceous and cellulosic crops), which are first fermented to Farnesene and then hydrogenated to Farnesane. Farnesane has similar chemical and physical properties to diesel fuel, as far as its viscosity and density are concerned. Its higher Lower Heating Value (LHV) and cetane number mean that the biofuel has better combustion properties, and the lack of aromatics and sulfur could contribute to a decrease in smoke and paniculate matter emissions. Tests were carried out on a small displacement Euro5 automotive diesel engine for passenger car applications. The impact that the Farnesane blend could have on engine performance was first evaluated at full load. The effects of the use of the Farnesane blend on engine emissions and fuel consumption were then evaluated at seven different part load operating points, considered representative of the New European Driving Cycle. Other experimental investigations have been carried out to fully exploit the benefits that could be obtained by adjusting the Exhaust Gas Recirculation (EGR) rates in order to take into account the different Soot-NO_x and CO-NO_x biofuel blend trade-offs. When the engine was fueled with the Farnesane blend in diesel at full load operating conditions, without any modifications of the ECU calibration, brake torque output levels that were comparable with the reference diesel could be observed over almost the entire speed range. At part load operating conditions, which are representative of the New European Driving Cycle, no significant variations in fuel consumption were found on a mass basis, for the same fuel conversion efficiency and CO_2 emissions for the Farnesane blend compared to the diesel. The specific CO and HC emissions were reduced significantly for the biofuel blend at low and medium loads, while only modest or even insignificant variations were registered at higher loads. The NO_x emissions with the biofuel blend were generally comparable with those of the reference diesel fuel, while a noticeable reduction in smoke level was generally observed for medium and high load operating conditions. Finally, the Soot-NO_x and CO-NO_x trade-off, obtained from EGR sweeps, has highlighted the possibility of obtaining some further emission benefits through a better exploitation of the biofuel characteristics by means of a more extensive ECU recalibration.
机译：本文评估了在小型Euro 5排量乘用车柴油发动机中使用30％体积的可再生燃料Farnesane和化石柴油混合的效果.Fanenesane是一种15碳长的分子，可以得到源自生物质衍生糖（例如甘蔗，豆科和纤维素作物）的发酵，首先将其发酵成法呢烯，然后氢化成法呢烷。就其粘度和密度而言，法呢烷具有与柴油相似的化学和物理性质。其较高的较低的热值（LHV）和十六烷值意味着该生物燃料具有更好的燃烧性能，而缺少芳族化合物和硫可以减少烟雾和颗粒物的排放。测试是针对乘用车应用的小排量Euro5汽车柴油发动机进行的。首先，在满载条件下评估了Farnesane共混物可能对发动机性能的影响。然后，在七个不同的部分负荷运行点（被认为是新欧洲行驶周期的代表），评估了法呢烷混合物对发动机排放和燃油消耗的影响。已经进行了其他实验研究，以充分利用通过调节废气再循环（EGR）率而获得的益处，以便考虑到不同的Soot-NO_x和CO-NO_x生物燃料混合物的取舍。当在满负荷运行条件下用柴油中的Farnesane混合物为发动机加油时，无需对ECU标定进行任何修改，几乎可以在整个速度范围内观察到与参考柴油相当的制动扭矩输出水平。在代表新欧洲行驶周期的部分负荷运行条件下，按质量计算，在燃料消耗方面没有发现重大变化，因为与柴油相比，法呢烷混合物的燃料转化效率和CO_2排放量相同。在低负荷和中等负荷下，生物燃料混合物的特定CO和HC排放量显着降低，而在较高负荷下只有适度甚至微不足道的变化。生物燃料混合物的NO_x排放通常与参考柴油燃料相当，而在中负荷和高负荷运行条件下，通常观察到烟气水平明显降低。最后，从EGR扫描获得的Soot-NO_x和CO-NO_x折衷方案强调了通过更广泛的ECU重新校准更好地利用生物燃料特性获得更多排放益处的可能性。

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  • 来源
    《Fuel》 |2014年第15期|134-142|共9页
  • 作者

    Federico Millo; Samir Bensaid; Debora Fino; Sergio Jose Castillo Marcano; Theodoros Vlachos; Biplab Kumar Debnath;

  • 作者单位

    DENERG, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy;

    DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy;

    DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy;

    DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy;

    DENERG, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy;

    DENERG, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Farnesane; Biofuel; Diesel engine; Exhaust emissions;

    机译：法呢烷;生物燃料柴油发动机;尾气排放;

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