The Coordinating Research Council held its 16th workshop in March 2006, with 83 presentations describing the most recent mobile source-related emissions research. In this paper, we summarize the presentations from researchers who are engaged in improving our understanding of the contribution of mobile sources to air quality. Participants in the workshop discussed evaluation of inuse emissions control programs, effects of fuels on emissions, emission models and emission inventories, results from gas- and particle-phase emissions studies from sparkignition and diesel-powered vehicles, and efforts to improve our capabilities in performing on-board emissions measurements, as well as topics for future research.
The 16th Coordinating Research Council (CRC) On-Road Vehicle Emissions Workshop was held March 28–30, 2006, in San Diego, CA. Nearly 200 representatives from industry, government, academia, and consulting groups from Austria, Belgium, Canada, England, Finland, Germany, Japan, Republic of China, Sweden, and the United States participated in the meeting. The objectives of the workshop were to present the most recent results from research on the following: (1) in-use vehicle emission control programs; (2) emission measurement methods; (3) U.S. Environmental Protection Agency (EPA) Motor Vehicle Emission Simulator (MOVES) model; (4) vehicle emission modeling and activity data; (5) gasoline and diesel vehicle emissions; (6) effects of fuel on emissions; (7) unregulated emissions; and (8) particulate matter (PM) from mobile sources.
This year’s keynote speaker was Dr. James Eberhardt of the U.S. Department of Energy Office of FreedomCAR and Vehicle Technologies (DOE). He addressed emerging emissions challenges from future fuels and engine technologies. The transportation sector consumes roughly two-thirds of the petroleum used in the United States. The resource base for future transportation fuels includes biomass, coal, methane, oil sands, and oil shale. This constitutes an enormous domestically available carbon and hydrocarbon (HC) resource that could be used to produce transportation fuels. He stated that internal combustion engines are the most viable for transportation and that new low-temperature combustion regimes promise high efficiency and low emissions. These need to be investigated so that new emissions problems are not created from future fuel compositions and engine technologies.