Record Display for the EPA National Library Catalog


Main Title Automobile exhaust emission modal analysis model extension and refinement /
Author McAdams, H. T.
CORP Author Calspan Corp., Buffalo, N.Y.;Environmental Protection Agency, Ann Arbor, Mich. Certification and Surveillance Div.
Publisher U.S. Environmental Protection Agency, Office of Air and Waste Management, Office of Mobile Source Air Pollution Control, Certification and Surveillance Division,
Year Published 1974
Report Number EPA-460/3-74-024; EPA-68-03-0435
Stock Number PB-284 948
OCLC Number 173415094
Subjects Vehicle Test Driving Schedules ; Vehicle Operating Performance Modeling ; Fuel Consumption ; Emissions
Additional Subjects Air pollution ; Exhaust emissions ; Mathematical models ; Carbon dioxide ; Carbon monoxide ; Hydrocarbons ; Number solutions ; Fuel consumption ; Efficiency ; Accuracy ; Automobiles ; Automobile exhaust
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 460-3-74-024 NVFEL Library/Ann Arbor, MI 09/19/2011
NTIS  PB-284 948 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vii, 72, [16] p. : ill., charts. ; 28 cm.
This report on modal analysis of automobile emissions constitutes a refinement and extension of a modal analysis exhaust emission model previously developed. The modal analysis exhaust emission model makes it possible to calculate the amounts of emission products emitted by individual vehicles or groups of vehicles ovver an arbitrary driving sequence. Refinements to the model permit an improvement in computational efficiency and a reduction in input data requirements. Extensions of the model include a scheme for computation of fuel usage in terms of CO2, CO and HC output by means of a carbon-balance aproach and a procedure for more definitive assessment of the precision of the model in predicting group emissions. The report discusses the following: Investigates means to increase the computational efficiency of the model; determines whether modal testing requirements can be reduced without appreciable loss of information; defines the accuracy and precision with which group emission predictions can be made from modal data; and uses the modal analysis approach to predict fuel economy over arbitrary driving sequences.
Includes bibliographical references. "EPA-460/3-74-024." "Contract No. 68-03-0435"--T.p. "October 1974." "EPA Project Officer: C. J. Domke"--T.p.