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Ultrafine particle emissions from dry clutches : number concentration, size distribution and chemical composition

Hjelm, Rikard LU ; Lyu, Yezhe LU orcid ; Mancini, Alessandro ; Tsyupa, Bozhena ; Tu, Minghui ; Olofsson, Ulf and Wahlström, Jens LU orcid (2023) In Environmental Science: Atmospheres
Abstract

Non-exhaust sources, such as brakes, tyres, roads, and clutches, emit a large portion of airborne particles in road transportation, from ultrafine to coarse sizes. While airborne wear particle emissions from brakes and road-tyre contacts have been studied extensively, emissions from clutches have been overlooked. A preliminary study using a novel test rig has indicated that dry clutches also emit airborne wear particles. This paper presents a multi-method for the assessment of ultrafine particles from dry clutches regarding the number concentration, size distribution and chemical composition. The results show that ultrafine particles are emitted both during run-in and at the steady state, featuring a bi-modal size distribution.... (More)

Non-exhaust sources, such as brakes, tyres, roads, and clutches, emit a large portion of airborne particles in road transportation, from ultrafine to coarse sizes. While airborne wear particle emissions from brakes and road-tyre contacts have been studied extensively, emissions from clutches have been overlooked. A preliminary study using a novel test rig has indicated that dry clutches also emit airborne wear particles. This paper presents a multi-method for the assessment of ultrafine particles from dry clutches regarding the number concentration, size distribution and chemical composition. The results show that ultrafine particles are emitted both during run-in and at the steady state, featuring a bi-modal size distribution. Elementary analysis shows that the particles consist of several elements, predominately iron, silicon, and sulfur. It can be concluded from this study that ultrafine particles are always generated when the clutch is operated.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
epub
subject
in
Environmental Science: Atmospheres
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85179162559
ISSN
2634-3606
DOI
10.1039/d3ea00127j
language
English
LU publication?
yes
id
01396915-2767-436b-974a-383f22bdc54d
date added to LUP
2023-12-20 07:50:26
date last changed
2023-12-21 12:34:51
@article{01396915-2767-436b-974a-383f22bdc54d,
  abstract     = {{<p>Non-exhaust sources, such as brakes, tyres, roads, and clutches, emit a large portion of airborne particles in road transportation, from ultrafine to coarse sizes. While airborne wear particle emissions from brakes and road-tyre contacts have been studied extensively, emissions from clutches have been overlooked. A preliminary study using a novel test rig has indicated that dry clutches also emit airborne wear particles. This paper presents a multi-method for the assessment of ultrafine particles from dry clutches regarding the number concentration, size distribution and chemical composition. The results show that ultrafine particles are emitted both during run-in and at the steady state, featuring a bi-modal size distribution. Elementary analysis shows that the particles consist of several elements, predominately iron, silicon, and sulfur. It can be concluded from this study that ultrafine particles are always generated when the clutch is operated.</p>}},
  author       = {{Hjelm, Rikard and Lyu, Yezhe and Mancini, Alessandro and Tsyupa, Bozhena and Tu, Minghui and Olofsson, Ulf and Wahlström, Jens}},
  issn         = {{2634-3606}},
  language     = {{eng}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Environmental Science: Atmospheres}},
  title        = {{Ultrafine particle emissions from dry clutches : number concentration, size distribution and chemical composition}},
  url          = {{http://dx.doi.org/10.1039/d3ea00127j}},
  doi          = {{10.1039/d3ea00127j}},
  year         = {{2023}},
}