Record Display for the EPA National Library Catalog


Main Title Spark-ignition engine emission deterioration factors for the draft NONROAD2004 emissions model /
CORP Author United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division,
Publisher U.S. Environmental Protection Agency, Office of Transportation and Air Quality, Assessment and Standards Division,
Year Published 2004
Report Number EPA420-P-04-011
Stock Number PB2005-106077
OCLC Number 905858546
Subjects Spark ignition engines--Exhaust gas--United States ; Vehicles--Motors--Exhaust gas--United States ; Off-road vehicles--Environmental aspects--United States
Additional Subjects Air pollution ; Exhaust emissions ; Combustion products ; Liquid petroleum gas ; Compressed natural gas ; Nonroad vehicles ; Emission deterioration rates ; Spark ignition engines ; Deterioration inputs ; Environmental Protection Agency ; NONROAD2004
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 420-P-04-011 PDF file on file NVFEL Library/Ann Arbor, MI 04/06/2015
NTIS  PB2005-106077 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Edition Revised April 2004.
Collation 1 online resource ([16] pages) : illustrations
This report addresses the emission deterioration rates for spark-ignition engines currently being used in the draft NONROAD2004 model. The specific deterioration inputs used in NONROAD and their basis will be addressed for spark-ignition engines at or below 25 horsepower and over 25 horsepower, as well as liquid petroleum gas (LPG) and compressed natural gas engines (CNG). Deterioration inputs for compression-ignition (diesel) engines are addressed in the report, Exhaust Emission Factors for Nonroad Engine Modeling - Compression Ignition (NR-009b). The EPA welcomes comments and suggestions concerning our approach to modeling nonroad engine emissions deterioration.
Title from PDF title screen (viewed on March 30, 2015). "EPA420-P-04-011." "NR-011b." "April 2004." Supersedes 420-P-02-019. Includes bibliographical references (pages 12-13).