Authors: Yannick Flandrin, Robert Vidon, Fabrice Cazier, Stephanie Hue, Jean-Claude Dechaux, Valerie Nollet
Addresses: Lab. Transports et Environnement, INRETS, 25 Av. Mitterrand, 69675, Bron, France. Lab. Transports et Environnement, INRETS, 25 Av. Mitterrand, 69675 Bron, France. Centre Commun de Mesure, ULCO, 145 Av. Schumann, 59140 Dunkerque, France. Lab. Cinetique et Chimie de la Combustion, UMR CNRS 8522, USTL, 59650 Villeneuve d'Ascq, France. Lab. Cinetique et Chimie de la Combustion, UMR CNRS 8522, USTL, 59650 Villeneuve d'Ascq, France. Lab. Cinetique et Chimie de la Combustion, UMR CNRS 8522, USTL, 59650 Villeneuve d'Ascq, France
Abstract: A sample of 25 passenger cars was selected on the basis of a 2001 year French fleet prediction. Various types of vehicle technologies, i.e. diesel and petrol cars both equipped with or without catalyst, were tested on a chassis dynamometer with constant volume sampling for regulated emissions and individual Volatile Organic Compounds determination. A particular emphasis has been placed on toxic and/or photochemically reactive compounds such as benzene, formaldehyde, acetaldehyde and 1,3-butadiene. Driving cycles do not seem to influence volatile organic compounds composition for a specific noncatalyst car either petrol or diesel. On the other hand, strong variations were observed for catalyst cars. Carbonyl compounds represent the major part of diesel hydrocarbon emissions (approximately 30% w/w) but only a minor portion for petrol cars (approximately 5% w/w). Catalyst diesel and three-way catalyst petrol cars total hydrocarbons mass emissions were the lowest and about 40 times lower than conventional petrol cars.
Keywords: Volatile Organic Compounds; speciated emissions; hydrocarbons; carbonyl compounds; ozone forming potential.
International Journal of Vehicle Design, 2001 Vol.27 No.1/2/3/4, pp.140-149
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