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首页> 外文期刊>Journal of Energy Resources Technology >Laminar Burning Speeds of Nitromethane-Gasoline Blends at Elevated Temperatures and Pressures
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Laminar Burning Speeds of Nitromethane-Gasoline Blends at Elevated Temperatures and Pressures

机译：在升高的温度和压力下，硝基甲烷-汽油混合物的层流燃烧速度

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摘要

Nitromethane is extensively used in drag races and in glow plug unmanned aerial vehicle (UAV) engines. However, it has not been analyzed in the combustion literature enough. Nitromethane has a low stoichiometric air-fuel ratio; it can be blended with gasoline and used in larger quantities to enhance the power output of the internal combustion (IC) engines. This could find potential use in burgeoning UAV industry. The present investigation aims at experimentally determining the laminar burning speeds of nitromethane-gasoline blends at different equivalence ratios. Tests were conducted at both ambient conditions and at elevated temperatures and pressures. A constant volume combustion chamber (CVCC) was constructed and instrumented to carry out the investigation. The pressure rise in the chamber due to combustion was acquired and analyzed to determine the laminar burning speeds. The results showed that with an increase in the nitromethane concentration in gasoline, the laminar burning speeds for all the initial conditions also increased. With the rise in initial temperatures, the laminar burning speeds were observed to increase. However, a drop was observed with a rise in the initial pressures for all the blends. The obtained results for pure gasoline were compared with existing literature. A good match was observed. The investigation also aims at providing vital experimental data, which can be used for computational fluid dynamics validation studies later.
机译：硝基甲烷被广泛用于阻力赛和电热塞无人飞行器（UAV）发动机。然而，在燃烧文献中还没有对其进行足够的分析。硝基甲烷的化学计量空燃比低；它可以与汽油混合并大量使用，以增强内燃机（IC）的功率输出。这可能在新兴的无人机行业中找到潜在的用途。本研究旨在通过实验确定不同当量比下硝基甲烷-汽油混合物的层流燃烧速度。在环境条件以及升高的温度和压力下进行测试。构造了恒定体积的燃烧室（CVCC），并对其进行了仪器测试。获取并分析了燃烧引起的燃烧室中的压力上升，并确定了层流燃烧速度。结果表明，随着汽油中硝基甲烷浓度的增加，所有初始条件下的层流燃烧速度也增加。随着初始温度的升高，观察到层流燃烧速度增加。但是，观察到所有共混物的初始压力均随着下降而下降。将获得的纯汽油结果与现有文献进行了比较。观察到很好的匹配。该研究还旨在提供重要的实验数据，这些数据可用于以后的计算流体动力学验证研究。

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