Author(s)

D. Pillot

Abstract

An experimental method has been set up to assess the pollutant emissions from 6 common commercial vehicles following typical driving patterns. The 6 vehicles, ranging from a 3.5-ton van to a 5-axle semi-trailer and an urban bus, met the EURO 1 limits. Emission rates of CO, CO2, HC, NOx and particulates (in g per km) are provided for 4 different travel or average speeds, 20, 40, 60 and 80 km/h, combined with 2 driving behaviours (with the exception of the bus). Measurements give a limited but precise picture of the emissions from this type of vehicle. Comparisons with data from other laboratories show a good consis- tency in the average speed related trends. As for passenger cars, data for com- mercial vehicles shows that emissions are highly dependent upon average speed, and this is particularly true in the urban speed range (< 50 km/h). Th

Keywords