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A Photoacoustic Sensor System for Time Resolved Quantification of Diesel Soot Emissions
Technical Paper
2004-01-0968
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The reduction of particulate emissions limits requires new tools for the tuning of engines and exhaust aftertreatment systems. Time-resolved monitoring of low soot emissions is a key feature for such developments. The paper describes an improved photoacoustic soot sensor, and presents its applications for the characterization of transient exhaust soot emissions before and after Diesel emission after-treatment systems. The detection limit of the unit is around 5 μg/m3 soot, which is two orders of magnitude better than conventional time-resolved transmission measurement. Additionally, a wide dynamic range of four orders of magnitude can be achieved without range switching. The photoacoustic signal is proportional to the soot mass, no significant cross-sensitivities to gaseous absorbers were detected.
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Authors
- Wolfgang Schindler - AVL List GmbH
- Christoph Haisch - Institute of Hydrochemistry, Technical University Munich
- Harald A. Beck - Institute of Hydrochemistry, Technical University Munich
- Reinhard Niessner - Institute of Hydrochemistry, Technical University Munich
- Eberhard Jacob - MAN Nutzfahrzeuge Gruppe, Business Unit Engines
- Dieter Rothe - MAN Nutzfahrzeuge Gruppe, Business Unit Engines
Citation
Schindler, W., Haisch, C., Beck, H., Niessner, R. et al., "A Photoacoustic Sensor System for Time Resolved Quantification of Diesel Soot Emissions," SAE Technical Paper 2004-01-0968, 2004, https://doi.org/10.4271/2004-01-0968.Also In
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