Exhaust emissions from light vehicles fuelled with different biofuels
PILLOT ; BESOMBES ; CAZIER ; HANOUNE ; COMBET ; DELBENDE ; NOUALI ; VIDON ; TASSEL ; PERRET
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
PILLOT ; BESOMBES ; CAZIER ; HANOUNE ; COMBET ; DELBENDE ; NOUALI ; VIDON ; TASSEL ; PERRET
Résumé / Abstract
The tailpipe emissions from six Euro-4 vehicles fuelled with various biofuel blends were assessed along certification driving cycles (NEDC & FTP-75) and real-world ones. Analyses provide emission factors for CO, CO2, HC, NOx, PM and a number of PAH components and VOC (formaldehyde, acetaldehyde, benzene and 1,3-butadiene). E10 (10% of ethanol, energy equivalence) was used for comparison with gasoline and B5 (5% of biodiesel or FAME), B30 and B100 (pure Hydrotreated Vegetable Oil), for comparison with diesel fuel. On the whole, there are more positive impacts on pollutants than negative ones: both E10 and biodiesels reduce CO2 emissions, slightly but significantly. HC and PM reductions are much greater with biodiesels blends (except on the particulate filter equipped vehicle). On the contrary, the NOx emissions tend to increase with E10 under running with hot engine and under cold engine running with biodiesel blends. PAH, benzene and aldehyde emission are often higher with biodiesel blends, but values remain low. Keys-words: Exhaust emissions, Euro-4 cars, ethanol, biodiesel, CO2, PAH, aldehyde, benzene, butadiene.
Editeur
INRETS
