Articles | Volume 16, issue 13
https://doi.org/10.5194/acp-16-8559-2016
https://doi.org/10.5194/acp-16-8559-2016
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, Hilkka Timonen, Erkka Saukko, Heino Kuuluvainen, Sanna Saarikoski, Päivi Aakko-Saksa, Timo Murtonen, Matthew Bloss, Miikka Dal Maso, Pauli Simonen, Erik Ahlberg, Birgitta Svenningsson, William Henry Brune, Risto Hillamo, Jorma Keskinen, and Topi Rönkkö

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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.
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