High-accuracy Nanoparticle Sensor for Combustion Engine Exhaust Gases

M. Kraft, J. Kaczynski, T. Reinisch, M. Unger, A. Bergmann

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

Nanoparticles are one indispensable analyte in the characterisation of any combustion engine or exhaust aftertreatment system. To improve the presently prevalently used condensation nucleus magnification-based particle counters (CNC) in performance and footprint, a dedicated, comprehensive all-in-one CFD model was developed. Following experimental validation, the model was successfully used to simulate and better comprehend the internal functionings of the present standard system, identify critical design parameters and develop a new, improved sensor system design. The ensuing improved CNC nanoparticle sensor is now based on a vertical, annular design. Besides being highly compact, the new layout yields an almost perfectly homogenous (super-)saturation of the aerosol stream and superior temperature control of all relevant components. This gives the new design a uniquely high discriminatory power by nanoparticle diameter, a precise controllability of the effective particle detection cut-on size and a significant reduction in the effective particle losses in the sensor.

Originalspracheenglisch
Seiten (von - bis)35-38
Seitenumfang4
FachzeitschriftProcedia Engineering
Jahrgang168
DOIs
PublikationsstatusVeröffentlicht - 2016

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Exhaust systems (engine)
Exhaust gases
Nanoparticles
Sensors
Radiation counters
Supersaturation
Controllability
Temperature control
Aerosols
Condensation
Computational fluid dynamics
Systems analysis
Engines

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    ASJC Scopus subject areas

    • !!Engineering(all)

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    High-accuracy Nanoparticle Sensor for Combustion Engine Exhaust Gases. / Kraft, M.; Kaczynski, J.; Reinisch, T.; Unger, M.; Bergmann, A.

    in: Procedia Engineering, Jahrgang 168, 2016, S. 35-38.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

    Kraft, M. ; Kaczynski, J. ; Reinisch, T. ; Unger, M. ; Bergmann, A. / High-accuracy Nanoparticle Sensor for Combustion Engine Exhaust Gases. in: Procedia Engineering. 2016 ; Jahrgang 168. S. 35-38.
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