Abstract
It is still a huge challenge in the combustion diagnostics to determine the temperature of the fuel/air-mixture within a combustion chamber. But the knowledge of the temperature is a essential information for developing engine systems. In this work a measurement technique is introduced, which could be a solution for this problem. This technique is based on two-line-emission-spectroscopy in which formaldehyde is used as a tracer molecule. The fluorescence excitation is generated by a pulsed UV-laser with a wavelength of 355nm. A chamber is used, which enables to vary the temperature and the pressure. Measurements are done under motor-driven conditions. Thereby the fluorescence behaviour of the tracer substance is investigated both in air environments and in fuel/air-mixtures. The extracted results show a direct temperature-dependent relation of the detected fluorescence signals. These conclusions establish the analytical basis for a measuring system to determine the temperature of fuel/air-mixtures within combustion engines.
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Müller, R., Beushausen, V. (2008). Two-Line LIF-Emission Thermometry for Gas-Temperature Determination in IC-Engines. In: Valldorf, J., Gessner, W. (eds) Advanced Microsystems for Automotive Applications 2008. VDI-Buch. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-77980-3_10
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DOI: https://doi.org/10.1007/978-3-540-77980-3_10
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-77979-7
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