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Cold Temperature Effects on Speciated VOC Emissions from Modern GDI Light-Duty Vehicles 1
George, I., M. Hays, R. Snow, J. Faircloth, T. Long, AND R. Baldauf. Cold Temperature Effects on Speciated VOC Emissions from Modern GDI Light-Duty Vehicles 1. Emissions Inventory Conference, Baltimore, MD, August 15 - 18, 2017.
This abstract summarizes results from a recent AEMD dynamometer research study that investigated the speciated emissions from modern light-duty vehicles with gasoline direct injection engines at two temperatures. This work will provide critical emissions data to improve emissions inventories and air quality models.
In this study, speciated VOC emissions were characterized from three modern GDI light-duty vehicles. The vehicles were tested on a chassis dynamometer housed in a climate-controlled chamber at two temperatures (20 and 72 °F) using the EPA Federal Test Procedure (FTP) and a portion of the Supplemental FTP (i.e. US06) that represents more aggressive driving conditions. The vehicles operated gasoline blended with 10% ethanol. VOC emissions from diluted vehicle exhaust were sampled with SUMMA canisters for EPA Method TO-15 analysis and with 2,4-Dinitrophenylhydrazine (DNPH) cartridges for carbonyl analysis by EPA Method TO-11A. This presentation will report the impact of ambient cold temperature, driving cycle, and GDI technology on speciated VOC emissions.
Record Details:Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
AIR AND ENERGY MANAGEMENT DIVISION