Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Basic Evaporative and Crankcase Emission Rates for Nonroad Engine Modeling.
CORP Author Environmental Protection Agency, Washington, DC. Air and Radiation Div.
Publisher Apr 2004
Year Published 2004
Report Number EPA/420/P-04/012;
Stock Number PB2005-106078
Additional Subjects Evaporative emission rates ; Exhaust emissions ; Crankcase emission rates ; Modeling ; Assumptions ; Calculations ; Air pollution ; NONROAD2004 emissions model ; Nonroad engines ; Environmental Protection Agency
Library Call Number Additional Info Location Last
NTIS  PB2005-106078 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 07/12/2006
Collation 16p
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.