Dynamometer testing of on-road vehicles from the Los Angeles in-use emissions study
One part of the CARB/EPA coordinated In-Use Automobile Emissions field study of 1991 carried out in the Los Angeles area was the phase to examine the operation and emissions characteristics of high emitting carbon monoxide (CO) and hydrocarbon (HC) vehicles. In the part of the study, high CO and HC emitting in-use, consumer vehicles were detected by the cross-road remote sensors and pulled over for I/M testing. Vehicles were selected from those tested on the roadside inspection for further testing on a portable dynamometer set up in a nearby park. The selected vehicles were chosen by the author and had to meet the qualifications of having good tires, no coolant leaks and no exhaust leaks. The dynamometer test took between 20 and 30 minutes and was voluntary.
- Research Organization:
- Environmental Protection Agency, Research Triangle Park, NC (United States). Atmospheric Research and Exposure Assessment Lab.
- OSTI ID:
- 5997285
- Report Number(s):
- PB-93-222297/XAB; EPA-600/A-93/197
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
FIELD TESTS
VEHICLES
CALIFORNIA
CARBON MONOXIDE
DYNAMOMETERS
EXHAUST SYSTEMS
GASEOUS WASTES
INSPECTION
LEAKS
LOS ANGELES
NITROGEN OXIDES
PORTABLE EQUIPMENT
ROAD TESTS
TIRES
US EPA
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DEVELOPED COUNTRIES
EQUIPMENT
MEASURING INSTRUMENTS
NATIONAL ORGANIZATIONS
NITROGEN COMPOUNDS
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTION
TESTING
URBAN AREAS
US ORGANIZATIONS
USA
WASTES
330700* - Advanced Propulsion Systems- Emission Control
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)