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  • Timonen, HilkkaFinnish Meteorological Institute (author)

Influence of fuel ethanol content on primary emissions and secondary aerosol formation potential for a modern flex-fuel gasoline vehicle

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-04-24
  • Copernicus GmbH,2017
  • 19 s.

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:bb3ed093-7e13-4fb7-b98a-486c9595fc0a
  • https://lup.lub.lu.se/record/bb3ed093-7e13-4fb7-b98a-486c9595fc0aURI
  • https://doi.org/10.5194/acp-17-5311-2017DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • The effect of fuel ethanol content (10, 85 and 100 %) on primary emissions and on subsequent secondary aerosol formation was investigated for a Euro 5 flex-fuel gasoline vehicle. Emissions were characterized during a New European Driving Cycle (NEDC) using a comprehensive setup of high time-resolution instruments. A detailed chemical composition of the exhaust particulate matter (PM) was studied using a soot particle aerosol mass spectrometer (SPAMS), and secondary aerosol formation was studied using a potential aerosol mass (PAM) chamber. For the primary gaseous compounds, an increase in total hydrocarbon emissions and a decrease in aromatic BTEX (benzene, toluene, ethylbenzene and xylenes) compounds was observed when the amount of ethanol in the fuel increased. In regard to particles, the largest primary particulate matter concentrations and potential for secondary particle formation was measured for the E10 fuel (10% ethanol). As the ethanol content of the fuel increased, a significant decrease in the average primary particulate matter concentrations over the NEDC was found. The PM emissions were 0.45, 0.25 and 0.15 mgm-3 for E10, E85 and E100, respectively. Similarly, a clear decrease in secondary aerosol formation potential was observed with a larger contribution of ethanol in the fuel. The secondary-toprimary PM ratios were 13.4 and 1.5 for E10 and E85, respectively. For E100, a slight decrease in PM mass was observed after the PAM chamber, indicating that the PM produced by secondary aerosol formation was less than the PM lost through wall losses or the degradation of the primary organic aerosol (POA) in the chamber. For all fuel blends, the formed secondary aerosol consisted mostly of organic compounds. For E10, the contribution of organic compounds containing oxygen increased from 35 %, measured for primary organics, to 62% after the PAM chamber. For E85, the contribution of organic compounds containing oxygen increased from 42% (primary) to 57% (after the PAM chamber), whereas for E100 the amount of oxidized organics remained the same (approximately 62 %) with the PAM chamber when compared to the primary emissions.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Karjalainen, PanuTampere University of Technology (author)
  • Saukko, ErkkaTampere University of Technology (author)
  • Saarikoski, SannaFinnish Meteorological Institute (author)
  • Aakko-Saksa, PaïviVTT Technical Research Center of Finland, Espoo (author)
  • Simonen, PauliTampere University of Technology (author)
  • Murtonen, TimoVTT Technical Research Center of Finland, Espoo (author)
  • Dal Maso, MiikkaTampere University of Technology (author)
  • Kuuluvainen, HeinoTampere University of Technology (author)
  • Bloss, MatthewFinnish Meteorological Institute (author)
  • Ahlberg, ErikLund University,Lunds universitet,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Environmental and Climate Science (CEC),Faculty of Science,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)nucl-eal (author)
  • Svenningsson, BirgittaLund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)milj-bsv (author)
  • Pagels, JoakimLund University,Lunds universitet,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ie-jpa (author)
  • Brune, William HenryPennsylvania State University (author)
  • Keskinen, JormaTampere University of Technology (author)
  • Worsnop, Douglas R.Aerodyne Research Inc. (author)
  • Hillamo, RistoFinnish Meteorological Institute (author)
  • Rönkkö, TopiTampere University of Technology (author)
  • Finnish Meteorological InstituteTampere University of Technology (creator_code:org_t)

Related titles

  • In:Atmospheric Chemistry and Physics: Copernicus GmbH17:8, s. 5311-53291680-73161680-7324

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