Effects of ethanol and/or methanol in alcohol-gasoline blends on exhaust emissions

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Journal of Engineering for Gas Turbines and Power; (USA)

DOI:https://doi.org/10.1115/1.3240272· OSTI ID:7010153

Beta, R M ^[1]; Roan, V P ^[2]

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1. College of Engineering, Clemson Univ. Clemson, S.C. (US)
2. College of Engineering, Univ. of Florida, Gainesville, FL (US)

The authors discuss the effect on exhaust gas emissions (carbon monoxide, CO, hydrocarbons, HC, and aldehydes, CHO) resulting from mixing methanol and/or ethanol with gasoline for automotive fuels studied experimentally. Tests were conducted on an OEM four-cylinder engine running at different conditions of equivalence ratio and spark timing. Fuel blends with different percentages of alcohol content and different ratios of methanol to ethanol in the alcohol mixture were tested. Results of this investigation indicate that the presence of either or both of the alcohols in fuel blends significantly reduced the concentration of carbon monoxide in the exhaust emissions (up to 40-50 percent compared to pure gasoline only), with methanol slightly more effective than ethanol. Hydrocarbon emissions were also decreased by increasing the alcohol content of the fuel, with minimum hydrocarbon production occurring at percent alcohol-gasoline blends in conjunction with near-stoichiometric air-fuel ratios. However, aldehyde emissions were found to be markedly higher with alcohol-gasoline blends. The 10 percent alcohol-gasoline blends were found to produce about 50 percent more aldehyde emissions than pure gasoline.

• OSTI ID: 7010153
• Journal Information: Journal of Engineering for Gas Turbines and Power; (USA), Journal Name: Journal of Engineering for Gas Turbines and Power; (USA) Vol. 111:3; ISSN JETPE; ISSN 0742-4795
• Country of Publication: United States
• Language: English

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33 ADVANCED PROPULSION SYSTEMS
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54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADDITIVES
AIR POLLUTION CONTROL
ALCOHOL FUELS
ALDEHYDES
AUTOMOTIVE FUELS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
CONTROL
DATA
ENVIRONMENTAL EFFECTS
ETHANOL FUELS
EXHAUST GASES
EXPERIMENTAL DATA
FLUIDS
FUEL SUBSTITUTION
FUEL-AIR RATIO
FUELS
GASEOUS WASTES
GASES
GASOLINE
HYDROCARBONS
INFORMATION
KINETICS
LIQUID FUELS
METHANOL FUELS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
POLLUTION CONTROL
REACTION KINETICS
SYNTHETIC FUELS
WASTES