Document Detail

Motorcycle emissions and fuel consumption in urban and rural driving conditions.
MedLine Citation:
PMID:  12873404     Owner:  NLM     Status:  MEDLINE    
This work reports sampling of motorcycle on-road driving cycles in actual urban and rural environments and the development of representative driving cycles using the principle of least total variance in individual regions. Based on the representative driving cycles in individual regions, emission factors for carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NO(x)=NO+NO(2)) and carbon dioxide (CO(2)), as well as fuel consumption, were determined using a chassis dynamometer. The measurement results show that the representative driving cycles are almost identical in the three largest cities in Taiwan, but they differ significantly from the rural driving cycle. Irrespective of driving conditions, emission factors differ insignificantly between the urban and rural regions at a 95% confidence level. However, the fuel consumption in urban centers is approximately 30% higher than in the rural regions, with driving conditions in the former usually poor compared to the latter. Two-stroke motorcycles generally have considerably higher HC emissions and quite lower NO(x) emissions than those of four-stroke motorcycles. Comparisons with other studies suggest that factors such as road characteristics, traffic volume, vehicle type, driving conditions and driver behavior may affect motorcycle emission levels in real traffic situations.
K S Chen; W C Wang; H M Chen; C F Lin; H C Hsu; J H Kao; M T Hu
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Science of the total environment     Volume:  312     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2003 Aug 
Date Detail:
Created Date:  2003-07-22     Completed Date:  2003-08-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  113-22     Citation Subset:  IM    
Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC.
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MeSH Terms
Air Pollutants / analysis*
Automobile Driving*
Motor Vehicles
Rural Population
Urban Population
Vehicle Emissions / analysis*
Reg. No./Substance:
0/Air Pollutants; 0/Vehicle Emissions

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