title: A modal approach to vehicular emissions and fuel consumption model development.
abstract: This study reports on the analysis of emissions and fuel consumption from motor vehicles using a modal approach. The four standard driving modes are idling, accelerating, cruising, and decelerating. On-road data were collected using instrumented test vehicles traveling many times through the urban areas of Hong Kong. A model was developed for estimating vehicular fuel consumption and emissions as a function of instantaneous speed and driving mode. Piecewise interpolation functions were proposed for each nonidling driving mode. Idling emission and fuel consumption rates were estimated as negative exponential functions of idling time. Preliminary modeling results showed good agreements for the test vehicles and indicated that the on-road measurements are feasible for the development of modal emission and fuel consumption models.
authors.affiliation: Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hong Kong, SAR. cewthung@polyu.edu.hk
authors.forename: Wing-Tat
authors.initials: WT
authors.lastname: Hung
authors.forename: Hing-Yan
authors.initials: HY
authors.lastname: Tong
authors.forename: Chun-Shun
authors.initials: CS
authors.lastname: Cheung
mesh_terms: D000465:Algorithms; D003625:Data Collection; D005579:Fossil Fuels; D006723:Hong Kong; D015233:Models, Statistical; D018986:Motor Vehicles; D015203:Reproducibility of Results; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D005579:Fossil Fuels; D001335:Vehicle Emissions