Assessment of unregulated emissions from gasoline oxygenated blends

Title: Assessment of unregulated emissions from gasoline oxygenated blends

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Abstract

Four gasoline or gasoline-oxygenate blend fuels were used in the evaluation of regulated and unregulated emissions for five test vehicles. The fuels listed below were all prepared from a common base gasoline and were blended to have equal octane ratings. They were Baseline, aromatic-enriched, 10% Ethanol blend, 16.4% Methyl tertiary-butyl ether (MTBE) blend, and 19.1% Ethyl tertiary-butyl ether (ETBE) blend. The five test vehicles represented different types of emissions control technology: pre-catalyst, oxidation catalyst, three-way catalyst with closed-loop carburetor operation and an air pump, three-way catalyst with throttle body fuel injection, and three-way catalyst with port fuel injection. Each vehicle was operated with each fuel over the Federal Test Procedure (including evaporative emissions) for a total of 15 tests per vehicle. Several unregulated exhaust emissions were measured including ethylene, 1,3-butadiene, isobutylene, benzene, toluene, o-, m-, and p-xylenes, formaldehyde, acetaldehyde, ethanol, MTBE, and nitrous oxide. In addition, evaporative emissions were analyzed for MTBE, benzene, and ethanol. The emission data from tests using the ethanol, MTBE, and ETBE blends were compared to emissions produced from tests using the aromatic-enriched baseline fuel to determine if there were any statistically significant differences associated with the use of the blends.

Authors:: Warner-Selph, M A; Smith, L R

Publication Date:: 1991-03-01

Research Org.:: Southwest Research Inst., San Antonio, TX (United States)

OSTI Identifier:: 5627622

Report Number(s):: PB-91-187583/XAB
CNN: EPA-68-C9-0004

Resource Type:: Technical Report

Resource Relation:: Other Information: Sponsored by Environmental Protection Agency, Ann Arbor, MI. Office of Mobile Sources

Country of Publication:: United States

Language:: English

Subject:: 33 ADVANCED PROPULSION SYSTEMS; 02 PETROLEUM; 10 SYNTHETIC FUELS; EXHAUST GASES; CHEMICAL COMPOSITION; FUEL ADDITIVES; ENVIRONMENTAL IMPACTS; GASOHOL; GASOLINE; ACETALDEHYDE; AIR POLLUTION CONTROL; AROMATICS; BENZENE; BUTADIENE; BUTENES; CATALYSTS; CATALYTIC CONVERTERS; COMPARATIVE EVALUATIONS; EMISSION; ETHANOL; ETHERS; ETHYLENE; FORMALDEHYDE; FUELS; NITROUS OXIDE; QUALITY ASSURANCE; TOLUENE; VEHICLES; XYLENES; ADDITIVES; ALCOHOLS; ALDEHYDES; ALKENES; ALKYLATED AROMATICS; CHALCOGENIDES; CONTROL; DIENES; EQUIPMENT; FLUIDS; GASEOUS WASTES; GASES; HYDROCARBONS; HYDROXY COMPOUNDS; LIQUID FUELS; NITROGEN COMPOUNDS; NITROGEN OXIDES; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PETROLEUM PRODUCTS; POLLUTION CONTROL; POLLUTION CONTROL EQUIPMENT; POLYENES; WASTES; 330800* - Emission Control- Alternative Fuels; 020900 - Petroleum- Environmental Aspects; 100900 - Synthetic Fuels- Environmental Aspects- (1990-)

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                    Warner-Selph, M A, and Smith, L R. Assessment of unregulated emissions from gasoline oxygenated blends.  United States: N. p., 1991. 
        Web.

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                    Warner-Selph, M A, & Smith, L R. Assessment of unregulated emissions from gasoline oxygenated blends.  United States.

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                    Warner-Selph, M A, and Smith, L R. Fri .  
        "Assessment of unregulated emissions from gasoline oxygenated blends".  United States.

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@article{osti_5627622,

  title        = {Assessment of unregulated emissions from gasoline oxygenated blends},

  author       = {Warner-Selph, M A and Smith, L R},

  abstractNote = {Four gasoline or gasoline-oxygenate blend fuels were used in the evaluation of regulated and unregulated emissions for five test vehicles. The fuels listed below were all prepared from a common base gasoline and were blended to have equal octane ratings. They were Baseline, aromatic-enriched, 10% Ethanol blend, 16.4% Methyl tertiary-butyl ether (MTBE) blend, and 19.1% Ethyl tertiary-butyl ether (ETBE) blend. The five test vehicles represented different types of emissions control technology: pre-catalyst, oxidation catalyst, three-way catalyst with closed-loop carburetor operation and an air pump, three-way catalyst with throttle body fuel injection, and three-way catalyst with port fuel injection. Each vehicle was operated with each fuel over the Federal Test Procedure (including evaporative emissions) for a total of 15 tests per vehicle. Several unregulated exhaust emissions were measured including ethylene, 1,3-butadiene, isobutylene, benzene, toluene, o-, m-, and p-xylenes, formaldehyde, acetaldehyde, ethanol, MTBE, and nitrous oxide. In addition, evaporative emissions were analyzed for MTBE, benzene, and ethanol. The emission data from tests using the ethanol, MTBE, and ETBE blends were compared to emissions produced from tests using the aromatic-enriched baseline fuel to determine if there were any statistically significant differences associated with the use of the blends.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5627622},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1991},

  month        = {3}

}

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