Secondary Particulate Matter Exceed Primary Emissions from Current Gasoline Vehicles: Air Quality and Public Health Implications

The generation of realistic emissions from many combustion sources under controlled, highly repeatable, conditions typically requires chassis dynamometers, which are not generally accessible to large stationary chambers and to most research groups. Characterizing aerosols from gasoline direct injection (GDI) vehicles is an important step in understanding air quality in our region. Less attention has been paid to SOA formation from GDI vehicles, although particulate matter (PM) and volatile organic compounds (VOC) emissions can be high especially during cold-starts, or gasoline vehicles operating on fuels with different composition. The goal of this study is to characterize the primary emissions and the secondary organic aerosol (SOA) formation from current technology GDI and port fuel injection (PFI) vehicles when operated under different driving cycles. For this study, University of California, Riverside (UCR) will employ a 30 m3 Mobile Atmospheric Chamber (MACh) (2 mil fluorinated ethylene propylene Teflon film reactor) that was developed to study the aged emissions from different combustion systems. In addition to the mobile chamber, the research team will also utilize an oxidation flow reactor that was developed in Tampere University of Technology, Finland, which is better suited to measure real-time secondary aerosol formation potential of rapidly changing emission sources due to its improved flow conditions and shorter residence time.


    • English


    • Status: Completed
    • Funding: $75000
    • Contract Numbers:


    • Sponsor Organizations:

      Office of the Assistant Secretary for Research and Technology

      University Transportation Centers Program
      Department of Transportation
      Washington, DC  United States  20590
    • Managing Organizations:

      Center for Advancing Research in Transportation Emissions, Energy, and Health

      Texas A&M Transportation Institute
      College Station, TX  United States  77843
    • Project Managers:

      Walker, Marcia

    • Performing Organizations:

      University of California, Riverside

      1084 Columbia Ave.
      Riverside, CA  United States  92507
    • Principal Investigators:

      Karavalakis, Georgios

    • Start Date: 20180101
    • Expected Completion Date: 20191130
    • Actual Completion Date: 0
    • USDOT Program: University Transportation Centers Program
    • Source Data: UCR-01-14

    Subject/Index Terms

    Filing Info

    • Accession Number: 01672111
    • Record Type: Research project
    • Source Agency: Center for Advancing Research in Transportation Emissions, Energy, and Health
    • Contract Numbers: 69A3551747128
    • Files: UTC, RIP
    • Created Date: Jun 14 2018 4:49PM