Record Display for the EPA National Library Catalog


Main Title Development of On-Road Emission Factors for Heavy-Duty Vehicles.
Author Harris, D. B. ; King, F. G. ; Brown, E. ;
CORP Author Acurex Environmental Corp., Research Triangle Park, NC.;National Risk Management Research Lab., Research Triangle Park, NC.
Publisher 1995
Year Published 1995
Report Number EPA-68-04-0005; EPA/600/A-95/138;
Stock Number PB96-139019
Additional Subjects Heavy duty vehicles ; Emission factors ; Diesel engines ; Trucks ; Mobile pollutant sources ; Engine dynamometers ; Chassis dynamometers ; Acceleration ; Velocity measurement ; Road slope ; Driving style effect on exhaust emissions ; Weight ; Vehicle air pollution ; Mathematical models ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB96-139019 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
The paper discusses an EPA project the objectives of which are to: (1) define on-road emissions from heavy-duty diesel vehicles (HDDVs); (2) assess agreement between engine and chassis dynamometers and on-road emission factors; (3) evaluate current conversion factors for dynamometer data and develop appropriate ones if needed; and (4) develop a model emissions model. The experimental approach involves on-road tests that develop the model data necessary to model the emissions as a function of speed, load, grade, and acceleration. These data are fitted to routes representing trans-urban interstate travel, terminal entry/exit, and urban delivery. A final test sequence utilizes a certification cycle that has been adapted to suit actual truck operational capability to develop data for direct comparison with the dynamometer data.