Characterization of four potential laser-induced fluorescence tracers for diesel engine applications.
Characterization of four potential laser-induced fluorescence tracers for diesel engine applications.
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用于柴油发动机应用的四种潜在激光诱导荧光示踪剂的表征。
DOI：
10.1364/ao.52.008001
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发表时间：
2013
期刊：
影响因子：
1.9
通讯作者：
P. Miles
中科院分区：
文献类型：
--
作者：
J. Trost;L. Zigan;A. Leipertz;Dipankar Sahoo;P. Miles
介绍了4种潜在的激光诱导荧光(LIF)示踪剂，即1-苯基正辛烷、1-苯基正十一烷、1-甲基萘和2-甲基萘，并对其进行了表征。这些示踪剂嵌入柴油主要参考燃料n-C₁₆H₃₄和ISO-C₁₆H₃₄中，与通常使用的甲苯/异辛烷/正庚烷示踪燃料体系相比，与商品柴油的相关物理性质匹配得更好。在氮气流动池中测量了每个候选示踪剂分子的荧光强度和光谱的温度和压力依赖关系。结果表明，甲基萘的信号强度比1-苯基正十一烷和1-苯基正十一烷的信号强度高约两个数量级，并表现出较强的温度依赖性，而与压力无关。对1-甲基萘的荧光光谱分析表明，通过选择合适的滤光片，它也可以用于双色检测激光诱导荧光测温。
Four potential laser-induced fluorescence (LIF) tracers, 1-phenyloctane, 1-phenyldecane, 1-methylnaphthalene, and 2-methylnaphthalene, are characterized for diesel engine applications. These tracers, embedded in the diesel primary reference fuels n-C₁₆H₃₄ and iso-C₁₆H₃₄, match the relevant physical properties of commercial diesel fuel much better than the commonly used toluene/iso-octane/n-heptane tracer-fuel system does. The temperature and pressure dependencies of the fluorescence intensities and spectra were measured in a flow cell in nitrogen for each candidate tracer molecule. The results show that the signal intensities of the methylnaphthalenes are about two orders of magnitude higher than for 1-phenyloctane and 1-phenyldecane and show a strong temperature but no pressure, dependence. An analysis of the fluorescence spectrum of 1-methylnaphthalene shows that it also can be used for two-color detection LIF thermometry by choosing appropriate optical filters.