Evaluation of the International Vehicle Emission (IVE) model with on-roadremote sensing measurements
GUO Hui , ZHANG Qing-yu , SHI Yao , WANG Da-hui
DOI:
Received August 02, 2006,Revised March 27, 2007, Accepted , Available online
Volume 19,2007,Pages 818-826
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International Vehicle Emissions (IVE) model funded by U.S. Environmental Protection Agency (USEPA) is designed to estimate
emissions from motor vehicles in developing countries. In this study, the IVE model was evaluated by utilizing a dataset available from
the remote sensing measurements on a large number of vehicles at five di erent sites in Hangzhou, China, in 2004 and 2005. Average
fuel-based emission factors derived from the remote sensing measurements were compared with corresponding emission factors derived
from IVE calculations for urban, hot stabilized condition. The results show a good agreement between the two methods for gasoline
passenger cars’ HC emission for all IVE subsectors and technology classes. In the case of CO emissions, the modeled results were
reasonably good, although systematically underestimate the emissions by almost 12%–50% for di erent technology classes. However,
the model totally overestimated NOx emissions. The IVE NOx emission factors were 1.5–3.5 times of the remote sensing measured
ones. The IVE model was also evaluated for light duty gasoline truck, heavy duty gasoline vehicles and motor cycles. A notable result
was observed that the decrease in emissions from technology class State II to State I were overestimated by the IVE model compared to
remote sensing measurements for all the three pollutants. Finally, in order to improve emission estimation, the adjusted base emission
factors from local studies are strongly recommended to be used in the IVE model.
