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Gasoline-Powered Vehicles Produce Significant Amounts of Ultrafine Particles
March 2004
A three-year study directed by NREL, and carried out at the Universities of Minnesota, Wisconsin, and the University of Applied Sciences, Windisch, Switzerland, concluded that cold, cold start, and cold driving conditions greatly influence particle emissions from gasoline-powered vehicles, and that these emissions need to be considered in mobile emission model development by the US EPA. This study suggests that emissions from gasoline-powered vehicles are a significant source of particles in urban areas, and that studies are now needed to understand if ultrafine particles from gasoline engines are harmful to human health. For more information contact Doug Lawson.
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