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瑞典的 Oroboros AB 开发了一种新烷烃类燃油(NPF),它具有低芳香烃、高十六烷值、较高热值和接近于零的含硫量,相信它作为一种新的代用燃料而会受到重视。为此,在一台单缸柴油试验机上进行了进一步研究和燃烧分析,采用“Burst to File”高频信号采集编码和揭示这种燃油热化学反应过程的“Dragon”软件获得了详细的热力学分析。本研究旨在通过采用这种新的烷烃燃油来降低智利圣地亚哥市的排放。试验结果表明,NPF 燃油不仅对发动机排放,而且对其他能量参数,如着火延迟、气缸峰值压力、放热率和指示效率等都有明显的影响。试验中观察到,在相同发动机运行工况,NPF 燃油比智利标准燃油(CSF)具有更短的着火延迟期和更长的燃烧持续期。通过对预混合区放热率的分析表明,CSF 燃油的预混合燃烧比例比 NPF 燃油的大。这就说明发动机运行柔和,燃烧速率较低和 NO_x 生成较少。因此,当发动机采用 NPF 运行时,缸内的工作过程体现出更有利的较低峰值压力和较早的峰值位置。可以表明,NPF 作为一种经优化选择的碳链长度异变混合物能够在未经改动的压燃式发动机上使用,使法规限定的排放(NO_x、HC、CO、CO_2)、碳烟和燃油耗明显得到降低,并具有较柔和的热力学特性。因此可认为 NPF 或许是一种具有强竞争力的代用燃料。
Oroboros AB, Sweden, has developed a new alkane fuel (NPF) with low aromatics, high cetane, higher calorific value and near-zero sulfur content, which it believes to be a new alternative fuel Will be taken seriously. For this reason, further research and combustion analysis were conducted on a single-cylinder diesel testing machine and “Dragon” software, which encodes and reveals the thermal chemical reaction of the fuel using the “Burst to File” high-frequency signal acquisition Detailed thermodynamic analysis. This study aims to reduce emissions in Santiago, Chile, by using this new alkane fuel. The experimental results show that NPF fuel has significant effects on engine emissions as well as other energy parameters such as ignition delay, cylinder peak pressure, heat release rate and indicating efficiency. It was observed during the test that NPF fuel had a shorter ignition delay and a longer combustion duration than the Chilean standard fuel (CSF) for the same engine operating conditions. The analysis of the heat release rate in the premixed zone shows that the premixed combustion ratio of CSF fuel is larger than that of NPF fuel. This shows that the engine runs softly, with a lower combustion rate and NO x production. Therefore, when the engine is operated with NPF, the in-cylinder operation manifests a more favorable lower peak pressure and earlier peak position. It can be shown that NPF as an optimized carbon chain length variant can be used on an unmodified compression ignition engine to reduce emissions (NO x, HC, CO, CO 2), soot and fuel consumption Obviously reduced, with softer thermodynamic properties. NPF may therefore be considered as a competitive alternative fuel.