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

Hjelm, RikardLund University,Lunds universitet,Mekanik, Material och Komponentdesign,Institutionen för maskinvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Mechanics, Materials and Component Design,Department of Mechanical Engineering Sciences,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, LTH, Lund, Sweden. (author)

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

QC 20240408
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. Clutches in automobiles are shown to produce ultrafine particles, consisting of several metallic elements, which become airborne.

Lyu, YezheLund University,Lunds universitet,Mekanik, Material och Komponentdesign,Institutionen för maskinvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Mechanics, Materials and Component Design,Department of Mechanical Engineering Sciences,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, LTH, Lund, Sweden.(Swepub:lu)ye6106ly (author)
Mancini, AlessandroBrembo SpA, Mat Engn & Labs, Res & Dev Dept, Viale Europa 2, I-24040 Stezzano, Bergamo, Italy. (author)
Tsyupa, BozhenaBrembo SpA, Mat Engn & Labs, Res & Dev Dept, Viale Europa 2, I-24040 Stezzano, Bergamo, Italy. (author)
Tu, Minghui,1992-KTH Royal Institute of Technology,KTH,System- och komponentdesign(Swepub:kth)u1zqf716 (author)
Olofsson, Ulf,1962-KTH Royal Institute of Technology,KTH,System- och komponentdesign(Swepub:kth)u10qpddv (author)
Wahlström, JensLund University,Lunds universitet,Mekanik, Material och Komponentdesign,Institutionen för maskinvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Mechanics, Materials and Component Design,Department of Mechanical Engineering Sciences,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, LTH, Lund, Sweden.(Swepub:lu)je3808wa (author)
Mekanik, Material och KomponentdesignInstitutionen för maskinvetenskaper (creator_code:org_t)

In:Environmental Science: Royal Society of Chemistry (RSC)4:1, s. 35-422634-3606

By the author/editor: Hjelm, Rikard; Lyu, Yezhe; Mancini, Alessan ...; Tsyupa, Bozhena; Tu, Minghui, 199 ...; Olofsson, Ulf, 1 ...; show more...; Wahlström, Jens; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Tribology

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.