New Metric for Regulation of Diesel Vehicle Emissions

New Metric for Regulation of Diesel Vehicle Emissions Heejung Jung Professor Dept. of Mechanical Engineering & CE-CERT
University of California
Riverside, CA 92507 As regulatory limits in California and the US for 2007 heavy-duty diesel engines introduce dramatic reductions in PM emissions, there is considerable interest in new emission metrology that can more accurately measure low PM levels. One such metrology, particle number measurement, has been extensively investigated in Europe as part of Europe's Particle Measurement Program (PMP) for light-duty diesel vehicles. This program has put forth a new methodology, including instrument specifications and sampling protocols, for "solid" particle number measurements. While counting only solid particles results in better precision, it may not be fully indicative of the diesel PM exhaust components of interest from a health effects perspective. The PMP protocol still represents a significant advancement as it is currently the only methodology with low enough detection limits to produce precise measurements of Diesel Particulate Filter (DPF) equipped engines. Evaluation study of the PMP methodology will be presented.

Location: Stauffer Science Lecture Hall, Room 102 (SLH 102)

Audiences: Everyone Is Invited

Contact: April Mundy