Record Display for the EPA National Library Catalog


Main Title Median life, annual activity, and load factor values for nonroad engine emissions modeling /
CORP Author United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division,
Publisher United States Environmental Protection Agency,
Year Published 2010
Report Number EPA-420-R-10-016
Stock Number PB2010-114760
OCLC Number 865093323
Subjects Combustion gases--Environmental aspects--United States--Computer simulation ; Engines--Environmental aspects--United States--Computer simulation ; Air--Pollution--United States--Forecasting ; Combustion gases--Environmental aspects--United States--Forecasting
Additional Subjects Air pollution ; Exhaust emissions ; Mathematical models ; Inventories ; Automobile population
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 420-R-10-016 PDF file on file NVFEL Library/Ann Arbor, MI 12/16/2013
NTIS  PB2010-114760 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 1 online resource ([47] pages) : charts
EPAs NONROAD model computes emission inventories for nonroad engines. This report documents the default input values of median life, annual activity, and load factor for various types of nonroad engines. The model uses annual activity and load factor values to calculate yearly emissions for each engine type. In addition, the model uses activity and load factor, in combination with median life, to calculate the fleet age distributions for each engine type, as it projects future (or past) engine populations. Relative to the previous April 2004 version of this report, this version includes median life, activity, and load factor estimates for high performance sterndrive and inboard (SD/I) recreational marine engines. Also, beginning with NONROAD2005, the hydro power unit SCCs have been changed from 22xx005050 to 22xx006035, reflecting a reclassification from the farm to the commercial category.
Title from PDF title screen (viewed on December 12, 2013). "July 2010." "EPA-420-R-10-016." "NR-005d." Includes bibliographical references (pages 18-20).