Record Display for the EPA National Library Catalog


Main Title Testing Support for Evaluation of Inspection/Maintenance Issues (Test Group Nos. 3, 4 and 7).
Author Ashby, H. Anthony ;
CORP Author Hamilton Test Systems, Inc., Phoenix, AZ.;Environmental Protection Agency, Ann Arbor, MI. Emission Control Technology Div.
Year Published 1979
Report Number EPA-68-03-2829;
Stock Number PB81-115107
Additional Subjects Automobiles ; Fuel consumption ; Exhaust emissions ; Inspection ; Maintenance ; Maintenance personnel ; Performance evaluation ; Oregon ; Tables(Data) ;
Library Call Number Additional Info Location Last
NTIS  PB81-115107 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 186p
The tests were performed to gather vehicle emissions data to evaluate deterioration effects of exhaust emissions over short periods of time. The deterioration effects were determined by measuring the exhaust emissions after inspection and maintenance, measuring the exhaust emissions after a specific time interval, and comparing the results of the two test sequences. The time intervals selected were one month, two months, and three months. To assist in determining the cause of deterioration, vehicles that exhibited significant deterioration in exhaust emissions were adjusted to manufacturers specifications, tested and then retested after one month. The intention of Test Group No. 7 was to evaluate the effects of mechanic training on emission reductions achieved by motor vehicle inspection and maintenance (I/M) programs.