Record Display for the EPA National Library Catalog


Main Title Basic evaporative and crankcase emission rates for nonroad engine modeling : NR-012b /
CORP Author Environmental Protection Agency, Washington, DC. Air and Radiation Div.
Publisher United States Environmental Protection Agency, Air and Radiation,
Year Published 2004
Report Number EPA 420-P-04-012
Stock Number PB2005-106078
OCLC Number 1125159262
Subjects Motor fuels--Environmental aspects--United States ; Hydrocarbons ; Air--Pollution--Rates ; Evaporation--Rates
Additional Subjects Evaporative emission rates ; Exhaust emissions ; Crankcase emission rates ; Modeling ; Assumptions ; Calculations ; Air pollution ; NONROAD2004 emissions model ; Nonroad engines ; Environmental Protection Agency
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 420-P-04-012 PDF file on file NVFEL Library/Ann Arbor, MI 11/04/2019
NTIS  PB2005-106078 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Edition Revised.
Collation 1 online resource ([12] pages) : tables
This report documents the basic evaporative emission assumptions and calculations currently used in EPAs draft NONROAD2004 emissions model. This includes diurnal and hot soak evaporative emissions as well as crankcase emissions, running losses, and resting losses. An appendix also has been included with this report that contains the previous version of this technical report. Separate reports from the EPA Nonroad Engine Emissions Modeling Team address refueling emissions and adjustments of basic evaporative emissions for different ambient temperatures and fuel volatilities. These technical reports are provided to allow better understanding of the appropriate uses and limitations of the modeling results, and to allow informed comment on the modeling methodology. Comments are encouraged concerning other possible modeling approaches and any newer test data that may be available.
"EPA420-P-04-012." "Revised April 2004." Includes bibliographical references. Online resource; title from PDF title page (EPA, viewed on October 28, 2019).