Influence of ethanol-blended fuels on the emissions from three pre-1985 light-duty passenger vehicles
- Environmental Protection Agency, Research Triangle Park, NC (United States)
Tailpipe and evaporative emissions from three pre-1985 passenger motor vehicles operating on an ethanol oxygenated and on a nonoxygenated (base) fuel were characterized. Emission data were collected for vehicles operating over the Federal Test Procedure at 90{degree}F, 75{degree}F, and 40{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 8.8% ethanol, more paraffins and olefins, and less aromatics than the base fuel. The Reid vapor pressure (RVP) was adjusted to correspond to that of the base fuel. The emissions measured were total hydrocarbons (THCs), speciated hydrocarbons, speciated aldehydes, carbon monoxide (CO), and oxides of nitrogen (NO{sub x}). This study showed a general reduction in tailpipe emissions of THC, CO, benzene, and 1,3-butadiene when tested with the ethanol fuel. The ethanol fuel significantly reduced these emissions from the high emitting vehicle, MU098, at 90{degree}F, 75{degree}F, and 40{degree}F test temperatures. 14 refs., 21 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 458649
- Journal Information:
- Journal of the Air and Waste Management Association, Journal Name: Journal of the Air and Waste Management Association Journal Issue: 12 Vol. 46; ISSN JAWAEB; ISSN 1047-3289
- Country of Publication:
- United States
- Language:
- English
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