Urban traffic, fuel economy, and emissions. consistency of various measurements
A linear correlation of automotive fuel consumption in urban traffic with average trip speed was derived from data for a 1973 subcompact car driven 383 km in Detroit metropolitan traffic and confirmed by published field data, detailed computer simulation, testing the same vehicle on different fixed urban driving schedules, and small segments of the Federal Test Procedure (FTP). A similar model of hydrocarbon emissions was derived from small segments of FTP data and confirmed with published EPA correlations, detailed computer simulation, and dynamometer replication of street data. The correlation showed that for each second increase in trip time per kilometer, the g/km hydrocarbon emissions increase by about 0.6% of their value at the average trip speed of the LA-4 fixed urban driving schedule of the FTP. The fuel consumption model applies only to driving fully warmed vehicles. No simple models were found for carbon monoxide and nitrogen oxides emissions. 25 references.
- OSTI ID:
- 6392315
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320203* -- Energy Conservation
Consumption
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500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AUTOMOBILES
AUTOMOTIVE FUELS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DATA ANALYSIS
ENERGY CONSUMPTION
EXHAUST GASES
FEDERAL TEST PROCEDURE
FUEL CONSUMPTION
FUEL ECONOMY
FUELS
GASEOUS WASTES
GREAT LAKES REGION
HYDROCARBONS
MATHEMATICAL MODELS
MICHIGAN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION
ROAD TESTS
TESTING
USA
VEHICLES
WASTES