Record Display for the EPA National Library Catalog


Main Title Catalyst effectiveness of high mileage in-use vehicles /
Author Platte, Lois.
CORP Author Environmental Protection Agency, Ann Arbor, MI. Test and Evaluation Branch.
Publisher U.S. Environmental Protection Agency, Office of Air, Noise, and Radiation, Emission Control Technology Division, Test and Evaluation Branch,
Year Published 1979
Report Number EPA-AA-TEB-80-5
Stock Number PB80-192776
OCLC Number 746338864
Subjects Motor vehicles--Motors ; Automobiles--Motors--Exhaust gas ; Automobiles--Maintenance and repair ; Automobiles--Catalytic converters--Testing ; Vehicle Emissions
Additional Subjects Air pollution ; Ozone ; Exhaust emissions ; Performance evaluation ; Hydrocarbons ; Life(Durability) ; Catalytic converters ; Deterioration ; Automobiles ; Catalytic reactors(Exhaust systems) ; Light duty vehicles
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD ARCHIVE EPA AA-TEB-80-5 AWBERC Library/Cincinnati,OH 06/21/2024
ELCD  EPA AA-TEB-80-5 NVFEL Library/Ann Arbor, MI 08/15/2011 DISPERSAL
NTIS  PB80-192776 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13 pages : charts ; 28 cm
There has been speculation that fuel switching may have been a contributing factor to the increased ozone levels in the Los Angeles area during the recent smog alert. The rationale for the speculation is that automobiles equipped with catalytic converters emitted increased hydrocarbons (which through photochemical reactions form ozone) because of the reduced effectiveness or deactivation of the catalyst caused by the use of leaded fuel, many studies are being conducted to quantify the effect of such misfueling on the amount of pollutants emitted. However, this paper focuses on another factor related to the reduced capacity of the catalyst which also is viewed by some as a contributor to the air quality problem. The problem is the suspected inadequate performance of the catalyst due to the effects of deterioration from aging or mileage accumulation. The 'useful life' of light-duty vehicles has been defined as 50,000 miles or 5 years in Federal regulations. It is thought by some that the effectiveness of the catalyst on vehicles that are beyond their 'useful life' is drastically reduced. The higher mileage vehicles may contribute to increased hydrocarbon levels since many catalyst equipped automobiles now on the road have reached the 5 year or 50,000 mile mark.
"EPA-AA-TEB-80-5." "December 1979." Cover title.