EVALUATION OF A PROPOSED COLORADO STATE INSPECTION/MAINTENANCE PROGRAM
The results of this pilot effort confirm the poor emission performance of relatively new, in-use passenger cars although 1977 and 1978 automobiles displayed better control than those prior to confirmatory testing at high altitude. The underhood inspections revealed that many vehicles had been subjected to various forms of maladjustments, primarily ignition timing and idle mixture. It was found that a resonable I/M program at high altitude would be effective in identifying higher emitters.
Environmental Protection AgencyTechnology Assessment and Evaluation Branch
Ann Arbor, MI United States 48105
- Bejma, T C
- Publication Date: 1978-11
- Pagination: 15 p.
- TRT Terms: Air pollution; Altitude; Automobiles; Carbon monoxide; Exhaust gases; Hydrocarbons; Ignition; Inspection; Maintenance; Mixtures; Motor vehicles; Performance evaluations; Vehicle maintenance; Vehicle performance
- Geographic Terms: Colorado
- Subject Areas: Highways; Maintenance and Preservation; Vehicles and Equipment;
- Accession Number: 00192046
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: 79-2 Tech Rpt.
- Files: TRIS
- Created Date: Jul 11 1979 12:00AM