A Model To Determine Primary Air Pollutant
Emissions From Urban Buses In Santiago De
Chile
Author(s)
M. Osses, C. Gherardelli & F. Fresard
Abstract
A model to determine primary air pollutant
emissions from urban buses in Santiago de
Chile
M. Osses% C. Gherardelli* & F. Fresard^
* Department of Mechanical Engineering, University of Chile, Chile
^DICTUC, Pontificia Universidad Catolica, Chile
Abstract
A methodology for estimating emissions from urban buses using passive traffic
data is described. A software simulation of the physical road network and traffic
activity is linked to a set of emission factors for estimating emissions of
particulate matter (PM), carbon monoxide (CO), unburned hydrocarbons (HC),
oxides of nitrogen (NOx), sulphur dioxide (SO]), methane (CHU), nitrous oxide
(N]O), ammonia (NHg) and fuel consumption (FC). Observed traffic data is
compared to simulated data from a travel demand model, on the metropolitan
area of Santiago de Chile.
Urban buses are one of the largest sources of primary particulate matter and
nitrogen oxides in Santiago. Total fleet reaches 8469 units, divided into three
types
Keywords
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