Record Display for the EPA National Library Catalog


Main Title Effect of Laboratory Ambient Conditions on Exhaust Emissions.
CORP Author Scott Research Labs., Inc., San Bernardino, Calif.
Year Published 1970
Report Number NAPCA-22-69-156; Scott-2846; 1350;
Stock Number PB-219 974
Additional Subjects ( Exhaust gases ; Environmental tests) ; ( Air pollution ; Exhaust gases) ; Concentration(Composition) ; Hydrocarbons ; Carbon dioxide ; Nitrogen oxides ; Temperature ; Humidity ; Laboratories ; Regression analysis ; Correlations ; Analysis of variance ; Automobile exhaust
Library Call Number Additional Info Location Last
NTIS  PB-219 974 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 87p
The report presents the results of a test program to evaluate the effect of ambient temperature and humidity conditions on automobile exhaust emission levels. Concentration measurements of unburned hydrocarbons, carbon monoxide, carbon dioxide, and nitrogen oxide, as well as mass measurements of unburned hydrocarbons, carbon monoxide, and oxides of nitrogen were made at 20 different combinations of ambient temperature and humidity conditions. Five American-made vehicles and three foreign vehicles were evaluated at each of the 20 different test conditions. The test conditions were selected to represent the range of temperature and humidity values encountered at most exhaust emission testing facilities in the continental United States. (Modified author abstract)