Influence of oxygenated fuels on the emissions from three pre-1985 light-duty passenger vehicles
- Environmental Protection Agency, Research Triangle Park, NC (United States)
- ManTech Environmental Technology, Inc., Research Triangle park, NC (United States)
Tailpipe and evaporative emissions from three pre-1985 passenger motor vehicles operating on an oxygenated blend fuel and on a nonoxygenated base fuel were characterized. Emission data were collected for vehicles operating over the Federal Test Procedure at 40, 75, and 90[degree]F to simulate ambient driving conditions. The two fuels tested were a commercial summer grade regular gasoline (the nonoxygenated base fuel) and an oxygenated fuel containing 9.5 percent methyl tert-butyl ether (MTBE), more olefins, and fewer aromatics than the base fuel. The emissions measured were total hydrocarbons (THCs), speciated hydrocarbons, speciated aldehydes, carbon monoxide (CO), oxides of nitrogen (NO[sub x]), benzene, and 1,3-butadiene. This study showed no pattern of tailpipe regulated emission reduction when oxygenated fuel was used. Tailpipe emissions from the 1984 Buick Century without a catalyst and the 1977 Mustang with catalyst decreased with the MTBE fuel. However, emissions from the 1984 Buick Century and the 1980 Chevrolet Citation, both fitted with catalysts increased. The vehicles emitted more 1,3-butadiene and, in general, more NO[sub x] when operated with the base fuel. THC, CO, benzene, and 1,3-butadiene emissions from both fuels and all vehicles, in general, decreased with increasing test temperature, whereas NO[sub x] emissions, in general, increased with increasing test temperature. 14 refs., 1 fig., 9 tabs.
- OSTI ID:
- 7249716
- Journal Information:
- Journal of the Air and Waste Management Association; (United States), Journal Name: Journal of the Air and Waste Management Association; (United States) Vol. 44:6; ISSN 1047-3289; ISSN JAWAEB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020900* -- Petroleum-- Environmental Aspects
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADDITIVES
AIR POLLUTION MONITORING
ALDEHYDES
AROMATICS
AUTOMOBILES
BENZENE
BUTADIENE
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPILED DATA
DATA
DIENES
ETHERS
EXHAUST GASES
FLUIDS
FUELS
GASEOUS WASTES
GASES
GASOLINE
HYDROCARBONS
INFORMATION
LIQUID FUELS
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PETROLEUM PRODUCTS
POLYENES
TESTING
VEHICLES
WASTES