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Particle Speciation and Emission Profiles of Small 2-Stroke Engines

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Abstract: The Human Exposure and Atmospheric Sciences Division (HEASD) conducts studies designed to acquire information from emission sources for use in source apportionment studies. The objective of this work is to characterize a complete, speciated emission profile (PM and air toxics) from new and in-use two-stroke engines. Little is known about the organic and elemental composition of the exhaust from these engines, even though their emission rates are high. A variety of engines will be tested on a low-torque dynamometer in conjunction with a constant-volume dilution/sampling system. Fuel mixtures will consist of a blend of two fuels (a baseline gasoline and a reformulated fuel containing ethanol) and two oils (synthetic or petroleum). Particulate matter samples will be speciated for elemental and organic carbon content, individual polar and non-polar compounds (including semivolatile species), metals, and water soluble ions. Gas-phase samples will be speciated for both regulated (NAAQS) and non-regulated compounds. Results from this work will provide emission profiles for future source apportionment studies and regulated, mobile source emission models, and will demonstrate the effect of fuel composition on emissions.

This is an abstract of a proposed presentation and does not necessarily reflect the United States Environmental Protection Agency (EPA) policy. The actual presentation has not been peer reviewed by EPA. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
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Citation:Volckens, J., J. N. Braddock, R. Snow, C. Loomis, and W. Crew. Particle Speciation and Emission Profiles of Small 2-Stroke Engines. Presented at American Association for Aerosol Research, Anaheim, CA, October 21, 2003.
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Contact: Liz Hope - (919) 541-2785 or hope.elizabeth@epa.gov
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Division: Human Exposure & Atmospheric Sciences Division
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Branch: Environmental Characterization & Apportionment Branch
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Product Type: Abstrct/Oral
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Presented: 10/21/2003
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Related Entries:
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Bullet Item Chemical Characterization & Speciation of Mobile Source Emissions: Human Exposure Implications & Implementation Perspectives
spacer Relationship Reason:   A Project of the Product
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Last Updated on Monday, October 22, 2007
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