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A Test Stand Study on the Volatile Emissions of a Passenger Car Brake Assembly
Brembo S.p.A., 24040 Stezzano (BG), Italy.
Department of Chemistry, Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic.
Brembo S.p.A., 24040 Stezzano (BG), Italy.
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.). KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements. KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi.ORCID iD: 0000-0003-0696-7506
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2019 (English)In: Atmosphere, ISSN 2073-4433, E-ISSN 2073-4433, Vol. 10, no 5, article id 263Article in journal (Refereed) Published
Abstract [en]

Brake-related airborne particulate matter contributes to urban emissions in the transport sector. Recent research demonstrated a clear dependence of the number of ultra-fine particles on the disc brake temperature. Above the so-called transition temperature, the number of ultra-fine particles increases dramatically (several magnitudes). As for exhaust emissions, part of the emissions released during braking can be in the volatile fraction. For this reason, a disc brake test stand specifically designed for aerosol research was equipped with three different aerosol sampling instruments: (i) a standard cascade impactor, (ii) a cascade impactor operating at high temperature with a heated sampling line, and (iii) a standard cascade impactor with a thermodenuder. Tests with a brake assembly representative of European passenger vehicles were executed, and the concentration of released airborne particles was determined. The results showed a decrease by several magnitudes in the concentration (in the size range of below 200 nm) using the cascade impactor operating at 180 °C with the sampling line heated to 200 °C. A further decrease in the concentration of airborne particles with size fractions below 200 nm was measured using a standard cascade impactor with a thermodenuder heated to 300 °C.

Place, publisher, year, edition, pages
2019. Vol. 10, no 5, article id 263
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:kth:diva-254155DOI: 10.3390/atmos10050263ISI: 000472677600037OAI: oai:DiVA.org:kth-254155DiVA, id: diva2:1327900
Funder
EU, FP7, Seventh Framework Programme, 324385
Note

QC 20190624

Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-07-29Bibliographically approved

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Publisher's full texthttps://doi.org/10.3390/atmos10050263

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Wahlström, JensOlofsson, Ulf

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Machine Design (Div.)Machine ElementsTribologiMachine DesignThe KTH Railway Group
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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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