A test stand study on the volatile emissions of a passenger car brake assembly
Perricone, Guido ; Matějka, Vlastimil ; Alemani, Mattia ; Wahlström, Jens LU
and Olofsson, Ulf
(2019)
In Atmosphere
10(5).
- Abstract
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... (More)
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.
(Less)
- author
- Perricone, Guido
; Matějka, Vlastimil
; Alemani, Mattia
; Wahlström, Jens
LU
and Olofsson, Ulf
- publishing date
- 2019-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Brake emissions, Heated charger, Heated sampling line, Thermodenuder, Volatiles
- in
- Atmosphere
- volume
- 10
- issue
- 5
- article number
- 263
- publisher
- MDPI AG
- external identifiers
-
- scopus:85073029878
- ISSN
- 2073-4433
- DOI
- 10.3390/atmos10050263
- language
- English
- LU publication?
- no
- id
- 086d92d5-ac9a-4893-bc1b-0f36ab6c3413
- date added to LUP
- 2020-04-14 12:35:30
- date last changed
- 2022-04-18 21:34:51
@article{086d92d5-ac9a-4893-bc1b-0f36ab6c3413,
abstract = {{<p>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.</p>}},
author = {{Perricone, Guido and Matějka, Vlastimil and Alemani, Mattia and Wahlström, Jens and Olofsson, Ulf}},
issn = {{2073-4433}},
keywords = {{Brake emissions; Heated charger; Heated sampling line; Thermodenuder; Volatiles}},
language = {{eng}},
month = {{01}},
number = {{5}},
publisher = {{MDPI AG}},
series = {{Atmosphere}},
title = {{A test stand study on the volatile emissions of a passenger car brake assembly}},
url = {{http://dx.doi.org/10.3390/atmos10050263}},
doi = {{10.3390/atmos10050263}},
volume = {{10}},
year = {{2019}},
}