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首页> 外文期刊>Applied optics >Acetone laser-induced fluorescence behavior for the simultaneous quantification of temperature and residual gas distribution in fired spark-ignition engines
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Acetone laser-induced fluorescence behavior for the simultaneous quantification of temperature and residual gas distribution in fired spark-ignition engines

机译：丙酮激光诱导的荧光行为，用于同时量化点火式火花点火发动机的温度和残留气体分布

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摘要

Although the fluorescence behavior of acetone has already been examined widely, the amount of data is still not sufficient for the quantification of signals over the parameter field relevant for combustion engines. This leads to large uncertainties when new excitation wavelengths are applied or in cases where temperature and pressure and bath gas composition dependences of the fluorescence yield must be extrapolated from models. This work presents calibration results of the fluorescence signal intensities in nitrogen, air, and an exhaust-gas-air mixture in the wide range from 298 to 748 K and from 0.2 bar (0.02 MPa) to 20 bars for the two important excitation wavelengths 308 and 248 nm. Based on this data, measurements of temperature and exhaust gas concentrations in a fired spark ignition engine were performed with high accuracy in single-shot images also.
机译：尽管已经对丙酮的荧光行为进行了广泛的研究，但是数据量仍然不足以量化与内燃机相关的参数字段上的信号。当应用新的激发波长时，或者在必须从模型中推断温度，压力和浴气体成分对荧光产率的依赖性的情况下，这会带来很大的不确定性。这项工作给出了在两个重要的激发波长308下，从298至748 K和从0.2 bar（0.02 MPa）到20 bar的宽范围内的氮气，空气和废气-空气混合物中的荧光信号强度的校准结果。和248nm。基于此数据，还可以在单​​张图像中高精度地测量点火式火花点火发动机中的温度和废气浓度。

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