Secondary Particulate Matter Exceed Primary Emissions from Current Gasoline Vehicles: Air Quality and Public Health Implications
| 项目名称： | Secondary Particulate Matter Exceed Primary Emissions from Current Gasoline Vehicles: Air Quality and Public Health Implications |
| 摘要： | 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. |
| 状态： | Completed |
| 资金： | 75000 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | Center for Advancing Research in Transportation Emissions, Energy and Health |
| 项目负责人： | Walker, Marcia A |
| 执行机构： | University of California, Riverside |
| 主要研究人员： | Karavalakis, Georgios |
| 开始时间： | 20180101 |
| 预计完成日期： | 20191130 |
| 实际结束时间： | 0 |
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