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http://dx.doi.org/10.5572/KOSAE.2011.27.6.663

Emission Characteristics of a Passing Two-stroke Scooter using at a Roadside Measurement  

Woo, Dae-Kwang (Environmental Sensor System Research Center, Korea Institute of Science and Technology)
Lee, Seung-Bok (Environmental Sensor System Research Center, Korea Institute of Science and Technology)
Bae, Gwi-Nam (Environmental Sensor System Research Center, Korea Institute of Science and Technology)
Lim, Cheol-Soo (Climate Change Research Division, National Institute of Environmental Research)
Kim, Tae-Sung (Department of Mechanical Engineering, Sungkyunkwan University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.27, no.6, 2011 , pp. 663-671 More about this Journal
Abstract
Although a scooter is a convenient transportation means for a short distance traveling with a light package in the congested urban center, it might be one of the significant sources of air pollutants to which many people can easily be exposed during its passing-by. In this paper, we measured concentrations of gases and particles emitted from a scooter at roadside with no other traffic. To understand the characteristics of scooter emissions with respect to driving speed (idling, 30 km/h) at the roadside, total particle number concentration, particle size distribution, average surface area of particles deposited in the alveolar region, and concentrations of black carbon, CO, and $NO_x$ were measured. The concentrations of the particle number, surface area of deposited particles, CO, and $NO_x$ were highly fluctuated in the scooter's idling condition. The trends of particle number concentration, CO, and $NO_x$ generation were similar to one another. When the scooter started to move, all of $NO_x$, CO and particle number concentrations increased and after it passed by at the speed of 30 km/h, the concentration peaks of the particles and gases appeared at the same time. Unimodal size distribution with ~70 and ~93 nm mode diameters was observed for the idling and cruising condition, respectively. From this work, we found that emission from a passing vehicle could be characterized using a roadside monitoring technique.
Keywords
Scooter emissions; Roadside measurement; Ultrafine particle; $NO_x$; CO; EEPS (engine exhaust particle sizer);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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