Non-reactive Working Fluids for Reliably Sensing Nanoparticles in Automotive Exhaust Gases

M. Kraft, T. Reinisch, A. Bergmann

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

Nanoparticles in the exhausts of automotive internal combustion engines are routinely measured using condensation nuclei counting (CNC) sensors. Traditionally, n-butanol is used as working fluid for sensing combustion aerosols. However, when used on combustion engines burning modern, (partly) biogenic fuels, strong system drifts and reduced saturator lifetimes occur. This effect could be traced to non-volatile reaction products of acidic exhaust components with the alcoholic working fluid that poison the sensor, creating an immediate need for alternatives. Following fundamental theoretical considerations of the CNC principles, n-alkanes were identified as a new, advantageous class of working fluids. The materials have favourable thermal and diffusion properties, are chemically inert and condense efficiently on the carbonaceous nanoparticles of combustion aerosols and can be used with standard CNCs under standard conditions. Subsequent tests with linear alkanes in the C9 - C14 range proved their practical applicability as well as the validity of the underlying models.

Originalspracheenglisch
Seiten (von - bis)51-54
Seitenumfang4
FachzeitschriftProcedia Engineering
Jahrgang168
DOIs
PublikationsstatusVeröffentlicht - 2016

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Exhaust gases
Nanoparticles
Fluids
Paraffins
Aerosols
Condensation
Fuel systems
Sensors
Internal combustion engines
Butenes
Reaction products
Engines

Schlagwörter

    ASJC Scopus subject areas

    • !!Engineering(all)

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    Non-reactive Working Fluids for Reliably Sensing Nanoparticles in Automotive Exhaust Gases. / Kraft, M.; Reinisch, T.; Bergmann, A.

    in: Procedia Engineering, Jahrgang 168, 2016, S. 51-54.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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