Vehicle specific power (VSP) and engine stress (ES) were introduced to reflect the driving characteristics of vehicles in China. Emission rates of 60 BIN based on VSP and ES for light-duty vehicles were calculated on the basis of the on-board emission test data in 5 cities of China. The driving cycle-based mobile emission model (DCMEM) was developed to simulate CO, NOx and HC emission factors of light-duty vehicles for different cities or driving cycles. The differences in CO and NOx emission factors between the DCMEM simulation results and the emissions testing results were less than 10%, and less than 18% for HC.
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