Degradation effects on motor vehicle exhaust emission

Conference · Thu Jan 01 04:00:00 EST 1976

OSTI ID:6726184

Gunderson, J A; Resnick, L

A total of 600 (1968 to 1974) randomly selected vehicles were screened by engine parameter, safety, and idle tests. Those cars requiring major engine repairs or safety defects were rejected. Five hundred and seventy-six (576) were selected for testing and incorporated into four test groups. Each group contains 144 vehicles and are designated as the Baseline Control Group (Group I), the Inspection Group (Group II), a Manufacturer's Specification Group (Group III), and a Mandatory Maintenance and Parameter Inspection Group (Group IV). All vehicles entering the test program received a baseline 1972 Federal CVS emission test, followed by a hot-idle test (low and 2500 rpm). Adjustment or repair of vehicles was accomplished by Olson Laboratories for Group II and Group III vehicles. Class A garages performed maintenance on Group IV vehicles. Following the necessary maintenance, the Federal and idle tests were repeated for Group II, Group III, and Group IV vehicles. All vehicles in these groups were retested at 1-, 3-, 6-, 9- and 12-month intervals.

• OSTI ID: 6726184
• Report Number(s): CONF-760278-21
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
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AIR POLLUTION CONTROL
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DATA
EXHAUST GASES
EXPERIMENTAL DATA
FLUIDS
GASEOUS WASTES
GASES
HYDROCARBONS
INFORMATION
MAINTENANCE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
TIME DEPENDENCE
VEHICLES
WASTES