The University of Minnesota Department of Mechanical Engineering established a Center for Diesel Research in 1996 under the directorship of Prof. David Kittelson. Its functions include serving the diesel engine, automotive, and the alternative fuels industries. The Center specializes in the physical and chemical characterization of exhaust emissions, evaluation of emission controls, evaluation and demonstration of alternative fuels, certification of on- and off-highway engines, and the evaluation of control technology in the field. The Center has unique capabilities to characterize exhaust aerosols.

You can find more information about UM/CDR at their website.