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基于超连续谱激光吸收光谱法的用于内燃机的荧光示踪剂1-甲基萘的稳定性分析

Stability Analysis of the Fluorescent Tracer 1-Methylnaphthalene for IC Engine Applications by Supercontinuum Laser Absorption Spectroscopy.

作者信息

Fendt Peter, Retzer Ulrich, Ulrich Hannah, Will Stefan, Zigan Lars

机构信息

Lehrstuhl für Technische Thermodynamik (LTT) and Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91058 Erlangen, Germany.

出版信息

Sensors (Basel). 2020 May 19;20(10):2871. doi: 10.3390/s20102871.

DOI:10.3390/s20102871
PMID:32438554
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7287813/
Abstract

1-methylnaphthalene (1-MN) is a widely used laser-induced fluorescence (LIF) tracer for planar imaging of mixture formation and temperature distributions in internal combustion (IC) engines. As the LIF measurement results can be biased by partial tracer oxidation, the conversion of 1-MN and the base fuel isooctane is analyzed in a calibration cell. First, measurements using supercontinuum laser absorption spectroscopy (SCLAS) are presented in order to quantify the conversion by detection of the produced HO mole fraction. A single mode fiber (SMF) coupled setup is presented, with the fiber core acting as entrance slit of a Czerny-Turner spectrometer. Dependencies on residence time and global air-fuel ratio are presented at pressures up to 1.5 MPa and temperatures up to 900 K, at which distinct tracer and fuel consumption is observed. Signal loss due to intense beam steering was partially compensated using a self-stabilizing double-pass setup with a retroreflector.

摘要

1-甲基萘（1-MN）是一种广泛用于激光诱导荧光（LIF）的示踪剂，用于内燃机（IC）中混合气形成和温度分布的平面成像。由于LIF测量结果可能会受到示踪剂部分氧化的影响，因此在一个校准池中分析了1-MN和基础燃料异辛烷的转化率。首先，介绍了使用超连续激光吸收光谱（SCLAS）进行的测量，以便通过检测生成的HO摩尔分数来量化转化率。展示了一种单模光纤（SMF）耦合装置，光纤芯充当切尔尼-特纳光谱仪的入口狭缝。给出了在高达1.5 MPa的压力和高达900 K的温度下停留时间和整体空燃比的相关性，在该条件下观察到了明显的示踪剂和燃料消耗。使用带有后向反射镜的自稳定双程装置部分补偿了由于强烈光束转向导致的信号损失。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/fcf14930e2ca/sensors-20-02871-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/5a908e77f7a4/sensors-20-02871-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/f1529b916155/sensors-20-02871-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/412a7fa402cf/sensors-20-02871-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/c3787791e211/sensors-20-02871-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/fcf14930e2ca/sensors-20-02871-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/5a908e77f7a4/sensors-20-02871-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/f1529b916155/sensors-20-02871-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/412a7fa402cf/sensors-20-02871-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/c3787791e211/sensors-20-02871-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bae9/7287813/fcf14930e2ca/sensors-20-02871-g005.jpg

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