Technical Paper
Modern Diesel Particulate Matter Measurements and the Application of Lessons Learned to 2007 Levels and Beyond
2005-04-11
2005-01-0194
Experimental tests were conducted to determine the sensitivity of Diesel particulate matter (PM) at a given engine operating condition using a single cylinder research engine at the University of Wisconsin Engine Research Center. Utilizing a full dilution tunnel with a second stage partial dilution tunnel, the PM emissions were characterized. Physical properties were measured with a variety of instruments including a Scanning Mobility Particle Sizer (SMPS), Tapered Element Oscillating Microbalance (TEOM) as well as traditional filter-based gravimetric measurements. Chemical composition was determined through the use of the Thermal/Optical Transmittance (TOT) Method, Ion Chromatography (IC) and Inductively Coupled Plasma - Optical Emission Spectroscopy (ICP/OES). Particulate mass emissions were shown to be on the order of 0.05 g/bhp-hr for the light load engine operating condition selected.