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Proceedings 2018, 2(13), 1017; https://doi.org/10.3390/proceedings2131017

First Steps towards a Super-Compact In-Situ Laser-Induced-Incandescence Sensor System

1
Department of Electronic Sensor Systems, Graz University of Technology, 8010 Graz, Austria
2
CTR Carinthian Tech Research AG, 9524 Villach, Austria
*
Author to whom correspondence should be addressed.
Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.
Published: 2 April 2019
(This article belongs to the Proceedings of Eurosensors 2018)
PDF [463 KB, uploaded 2 April 2019]

Abstract

To realize an actual in-situ Laser-Induced Incandescence (LII) sensor system for measurements in an exhaust pipe of a combustion engine, suitable components for such an application were chosen, integrated in a first prototype and tested. Key components for the proposed LII system are a super-compact high-power DPSS laser (CTR HiPoLas®) as excitation source, fast KETEK silicon photomultipliers (SiPM) as detectors and a specially designed optical measurement setup. Using a defined aerosol from a soot generator (Jing 5201 miniCAST), signals were collected at different laser energies and soot concentrations. By comparing the recorded behaviour with the literature, the incandescence effect could be reliably identified as the true source of the signal. Further long-term tests at an AVL engine testbed were performed.
Keywords: Laser-Induced-Incandescence; LII; automotive exhaust; photonic sensors; soot; in-situ sensing Laser-Induced-Incandescence; LII; automotive exhaust; photonic sensors; soot; in-situ sensing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kupper, M.; Pulko, J.; Kraft, M.; Bergmann, A. First Steps towards a Super-Compact In-Situ Laser-Induced-Incandescence Sensor System. Proceedings 2018, 2, 1017.

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