Evaluation of a proposed Colorado state inspection/maintenance program. Technical report

Technical Report · Tue Oct 31 23:00:00 EST 1978

OSTI ID:5553853

Bejma, T C

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.

• Research Organization: Environmental Protection Agency, Ann Arbor, MI (USA)
• OSTI ID: 5553853
• Report Number(s): PB-290611
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION
AUTOMOBILES
DISPERSIONS
ENGINES
EXHAUST GASES
GASEOUS WASTES
IGNITION SYSTEMS
INSPECTION
INTERNAL COMBUSTION ENGINES
MAINTENANCE
MIXTURES
PERFORMANCE TESTING
POLLUTION
TESTING
VEHICLES
WASTES