Title :
Applicability of blue/UV laser diodes for the measurement of vaporized fuel fluorescence around stoichiometric concentrations
Author :
Hindle, Francis P. ; Yeo, T.L. ; Ozanyan, Krikor B. ; Poolton, Nigel R J ; McCann, Hugh
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
Abstract :
A fluorescence-based fiber-optic probe is implemented for use with a blue/UV laser diode to form a rugged, nonintrusive fuel sensor. Measurements are obtained from a test vessel controlled to replicate the temperature and pressure environment in a typical combustion engine. A fuel containing a specific polycyclic aromatic hydrocarbon (perylene, C20H12) is used to obtain wavelength resolved information and concentration variation characteristics. Emission intensity is examined in atmospheres with and without oxygen at pressures from 1 to 10 bar. The signals from a retail gasoline fuel present a greater challenge as they result from a complex mixture of hydrocarbon components. Detection of gasoline vapor concentrations in the range of 4% to 125% of stoichiometry is demonstrated.
Keywords :
fluorescence; gas sensors; internal combustion engines; optical sensors; petroleum; 1 to 10 bar; C20H12; UV laser diodes; blue laser diodes; combustion engine; complex mixture; concentration variation characteristics; emission intensity; fluorescence measurement; fluorescence-based fiber-optic probe; gasoline vapor concentration detection; hydrocarbon components; nonintrusive fuel sensor; oxygen; perylene; polycyclic aromatic hydrocarbon; pressure environment; retail gasoline fuel; rugged fuel sensor; stoichiometric concentrations; stoichiometry; temperature environment; test vessel; vaporized fuel; wavelength resolved information; Atmospheric measurements; Diode lasers; Fluorescence; Fuels; Hydrocarbons; Optical fiber sensors; Optical fiber testing; Petroleum; Probes; Sensor phenomena and characterization;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2003.820353
