Diesel Car Particulate Control Methods

Methods for particulate (and associated organics) emissions control were evaluated in several diesel cars. Of the methods investigated, only “particulate traps” provided large reductions in particulate emissions. Traps evaluated included metal mesh and ceramic monolithic configurations, catalyzed and uncatalyzed. One of the cars, with a ceramic trap installed, completed fifty thousand miles of distance accumulation. No significant deterioration of emissions occurred over those fifty thousand miles.