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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
	http://purl.fdlp.gov/GPO/gpo48248
	https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P10081RV.PDF

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
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

Abstract

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.

Notes

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).

Place Published

Washington, D.C.

Supplementary Notes