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首页> 外文期刊>Optics Letters >In-cylinder temperature measurements via time-correlated single-photon counting of toluene laser-induced fluorescence through a fiber-based sensor
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In-cylinder temperature measurements via time-correlated single-photon counting of toluene laser-induced fluorescence through a fiber-based sensor

机译：通过基于光纤的传感器对甲苯激光诱导的荧光进行时间相关的单光子计数来测量缸内温度

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摘要

In a near-production internal combustion engine, the effective fluorescence lifetime of toluene was determined by time-correlated single-photon counting with a minimally invasive fiber-optic spark-plug sensor. The lifetime measurement provided continuous crank-angle-resolved measurements of gas temperature. Proof-of-concept experiments in a motored four-cylinder spark-ignition engine were evaluated with a time resolution of 500 μs, yielding temperature precision of 25 K (standard deviation) at top-dead center. In these experiments, 10% toluene was added to the nonfluorescent base fuel iso-octane. Fluorescence lifetimes were related to temperature via calibration measurements in a high temperature pressure vessel, with the data fitted to a functional dependence derived from a previously published phenomenological model.
机译：在接近量产的内燃机中，甲苯的有效荧光寿命是通过使用微创光纤火花塞传感器进行时间相关的单光子计数来确定的。寿命测量提供了连续的曲轴角分辨气体温度测量。对电动四缸火花点火发动机的概念验证实验进行了评估，其时间分辨率为500μs，在上死点中心的温度精度为25 K（标准差）。在这些实验中，将10％甲苯添加到非荧光基础燃料异辛烷中。通过在高温压力容器中的校准测量，荧光寿命与温度相关，数据适合于从先前发表的现象学模型得出的功能依赖性。

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