Record Display for the EPA National Library Catalog


Main Title Light-duty diesel emission correction factors for ambient conditions /
Author Hare, Charles T.
CORP Author Southwest Research Inst., San Antonio, Tex.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available through the National Technical Information Service,
Year Published 1977
Report Number EPA/600/2-77/116; EPA-68-02-1777
Stock Number PB-272 549
OCLC Number 07268953
Subjects Diesel motor exhaust gas ; Automobiles--Pollution control devices
Additional Subjects Diesel engines ; Hydrocarbons ; Carbon monoxide ; Nitrogen oxides ; Air pollution ; Correction ; Exhaust emissions ; Humidity ; Standards ; Automobiles ; Statistical analysis ; Numerical analysis ; Tables(Data) ; Tests ; Dynamometers ; Measuring instruments ; Light duty vehicles ; Air quality
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-2-77-116 c.1 Headquarters Library/Washington,DC 03/10/2014
ELBD ARCHIVE EPA 600-2-77-116 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 600-2-77-116 AWBERC Library/Cincinnati,OH 04/12/2021
ESAD  EPA 600-2-77-116 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-272 549 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 96 pages : illustrations ; 28 cm.
Since emission measurements from passenger cars are performed at one standard set of ambient conditions and since emission rates of HC, CO, and NOx are sensitive to temperature and humidity, it is necessary to determine the influence of ambient conditions on emissions from major classes of vehicles. Although such information has been available for gasoline engine powered cars for sometime, no such data were available for diesel powered passenger cars. This report indicates that diesel HC and CO emissions are relatively insensitive to ambient conditions. Diesel NOx emissions, however, are sensitive to humidity but to a smaller extent than gasoline engines. Humidity correction factors for NOx emissions also appear to vary with vehicle power-to-weight ratios and are greater for higher powered vehicles.
EPA-600/2-77-116. "Task 5 interim report."