Effect of reformulated diesel fuel on unregulated emissions of light duty vehicles

Leena Rantanen, Ari Juva, Aapo Niemi, Seppo Mikkonen, Päivi Aakko, Maija Lappi

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)


Unregulated emissions of reformulated diesel fuels (sulfur < 50 ppm, aromatics < 20 vol-%) were compared to the European EN590 specification fuel (sulfur < 500 ppm, aromatics < 35 vol-%) in three IDI passenger cars and one DI van using FTP and/or ECE/EUDC emission test procedures. The effect of reformulated diesel fuels on the mutagenicity of particulate soluble organic fraction (SOF) was studied. Fuel reformulation reduced particulate emissions in IDI cars. Reformulating fuel by decreasing heavier aromatics-without decreasing final boiling point-reduced particulate mutagenicity on emission basis. At low ambient temperature (-7°C) particulate PAH and mutagenic emissions increased compared to the standard ambient temperature (+22°C) with all fuels.

Original languageEnglish
Article number961970
JournalSAE Technical Paper Series
Publication statusPublished - 1 Dec 1996
MoE publication typeA1 Journal article-refereed
EventInternational Fall Fuels and Lubricants Meeting and Exposition - San Antonio, TX, United States
Duration: 14 Oct 199617 Oct 1996


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