Browse Publications Technical Papers 2003-01-1892

Comparison of Size Distribution of Ultra fine Particles in Roadside Atmosphere and Diesel Exhaust 2003-01-1892

The size distributions of ultra fine particles in diesel exhaust were measured in a dilution tunnel at a high dilution ratio, and the results were compared with roadside measurements. The size distribution in diesel exhaust showed a single mode with a peak around 50 nm; in roadside atmosphere there was a bimodal distribution with peaks around 20 and 100 nm. Coagulation of diesel particles in the atmosphere was examined with an exhaust gas dispersion chamber. Coagulation of particles in the atmosphere and transient driving conditions of vehicle may cause the difference in size distribution between bench test results and roadside measurements.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.