Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Impact of Low Ambient Temperature on 3-Way Catalyst Car Emissions.
Author Braddock, James B. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1981
Report Number EPA-600/J-81-136;
Stock Number PB81-199986
Additional Subjects Air pollution control ; Exhaust emissions ; Sampling ; Concentration(Composition) ; Hydrocarbons ; Carbon monoxide ; Nitrogen oxides ; Sulfur dioxide ; Sulfates ; Hydrogen sulfide ; Ammonia ; Nitrogen oxide(N2O) ; Hydrogen cyanide ; Catalytic reactors(Exhaust systems) ; Carbonyl sulfide ; NTISEPAORD
Library Call Number Additional Info Location Last
NTIS  PB81-199986 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 32p
Regulated and unregulated exhaust emissions from four late model 3-way catalyst passenger cars were measured over the urban dynamometer driving schedule of the Federal Test Procedure as a function of ambient temperature (50 F-81 F). Fuel economy, regulated emissions HC, CO, NOx, and unregulated emissions NH3, HCN, N2O, CH4, COS, H2S, SO2, SO4, and C6H6 were studied. It was found that reduced ambient temperature operation (less than 68 F) significantly increased the regulated emissions HC and CO, and slightly increased several unregulated emissions. Within the limitations of this study, none of the unregulated emissions were emitted at concentrations that could be considered hazardous to the public.