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Volume 16, issue 13
Atmos. Chem. Phys., 16, 8559–8570, 2016
https://doi.org/10.5194/acp-16-8559-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 16, 8559–8570, 2016
https://doi.org/10.5194/acp-16-8559-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 14 Jul 2016

Research article | 14 Jul 2016

Time-resolved characterization of primary particle emissions and secondary particle formation from a modern gasoline passenger car

Panu Karjalainen et al.

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Aakko, P. and Nylund, N.-O.: Particle Emissions at Moderate and Cold Temperatures Using Different Fuels, Soc. Automot. Eng., SP-1809(724), 279–296, https://doi.org/10.4271/2003-01-3285, 2003.
Aakko-Saksa, P., Rantanen-Kolehmainen, L., and Skyttä, E.: Ethanol, Isobutanol, and Biohydrocarbons as Gasoline Components in Relation to Gaseous Emissions and Particulate Matter, Environ. Sci. Technol. 48, 10489–10496, https://doi.org/10.1021/es501381h, 2014.
Alkidas, A. C.: Combustion advancements in gasoline engines, Energy Convers. Manag., 48, 2751–2761, https://doi.org/10.1016/j.enconman.2007.07.027, 2007.
Arffman, A., Yli-Ojanperä, J., Kalliokoski, J., Harra, J., Pirjola, L., Karjalainen, P., Rönkkö, T., and Keskinen, J.: High-resolution low-pressure cascade impactor, J. Aerosol Sci., 78, 97–109, https://doi.org/10.1016/j.jaerosci.2014.08.006, 2014.
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We characterized time-resolved primary particulate emissions and secondary particle formation from a modern gasoline passenger car. In mass terms, the amount of secondary particles was 13 times the amount of primary particles. The highest emissions were observed after a cold start when the engine and catalyst performance were suboptimal. The key parameter for secondary particle formation was the amount of gaseous hydrocarbons in the exhaust.
We characterized time-resolved primary particulate emissions and secondary particle formation...
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