Impact of pine oil biofuel fumigation on gaseous emissions from a diesel engine
Impact of pine oil biofuel fumigation on gaseous emissions from a diesel engine
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DOI：
10.1016/j.fuproc.2014.02.012
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发表时间：
2014-08
影响因子：
7.5
通讯作者：
R. Vallinayagam;S. Vedharaj;Wenming Yang;C. Saravanan;P. Lee;K. Chua;S. Chou
中科院分区：
文献类型：
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作者：
R. Vallinayagam;S. Vedharaj;Wenming Yang;C. Saravanan;P. Lee;K. Chua;S. Chou
本研究的目的是探讨松油，植物为基础的生物燃料，当熏蒸在单缸柴油发动机的减排潜力。尽管使用松油作为柴油发动机应用的潜在候选者是可行的，但其在柴油发动机中的实用性还没有得到很大的启示。因此，我们开始了一项研究工作，利用生物衍生燃料松油的可再生能源，这对环境更加环保。松油是一种含氧燃料，具有较低的粘度，沸点和闪点，类似于其他植物基燃料，如乙醇和桉树油。然而，由于其较低的十六烷值，其在柴油发动机中的操作需要点火支持，并且其较低的粘度需要对燃料喷射系统进行修改以避免长期耐久性问题。因此，与使用生物燃料与柴油混合的常规方法相反，本研究尝试在进气歧管中熏蒸松油，同时通过主喷射系统注入柴油。通过这种措施，均质化的松油/空气混合物被引入到气缸内，并通过柴油的自燃被点燃。从实验研究中可以看出，在低负荷和满负荷条件下，松油可以分别替代柴油高达60%和36%。值得注意的是，在满负荷条件下，烟度排放比正常柴油机运行大幅减少了64.2%，而NOx（氮氧化物）排放略有增加。此外，在满负荷情况下，CO（一氧化碳）和HC（碳氢化合物）排放量比柴油低67.5%和47.8%。另一方面，CO和HC的排放量在低负荷条件下被注意到增加，但是，HC，CO和烟的RAE（相对平均排放量）被发现是减少。
This study aims to investigate the emission reduction potential of pine oil, a plant based bio-fuel, when fumigated in a single cylinder diesel engine. Despite the feasibility of using pine oil as a potential candidate for diesel engine application, big revelation has not been made on its utility in a diesel engine. Therefore, we embarked on a research work to capitalize the renewable source of energy from bio-derived fuel, pine oil, which is much greener to the environment. Pine oil, an oxygenated fuel, possesses lower viscosity, boiling point and flash point, similar to other plant based fuels like ethanol and eucalyptus oil. However, due to its lower cetane number, the operation of it in a diesel engine demands ignition support and the lower viscosity of it necessitates modification with the fuel injection system to avert long term durability issues. Therefore, contrary to the regular method of using biofuels in blends with diesel, this study has attempted to fumigate pine oil in the inlet manifold while diesel was injected through the main injection system. By this measure, homogenized pine oil/air mixture was inducted into the cylinder and ignited by the auto-ignition of diesel. From the experimental investigation, it has been observed that pine oil can replace diesel up to 60% and 36%, at low and full load conditions, respectively. Significantly, smoke emission has been drastically reduced by 64.2% than normal diesel operation at full load condition, with a slight increase in NOX(oxides of nitrogen) emission. Moreover, CO (carbon monoxide) and HC (hydrocarbon) emissions have been found to be 67.5% and 47.8% lower than that of diesel at full load condition. On the other hand, CO and HC emissions were noted to be increased at low load condition; however, the RAE (relative average emission) of HC, CO and smoke was found to be reduced.