Pollutant emissions need to be accurately estimated to ensure that air quality plans are
designed and implemented appropriately. Emission factors (EFs) are empirical functional …

Particulate emissions from motor vehicles have received increased attention over the past
two decades owing to associations observed between ambient particulate matter (PM) …

The particle number size distribution (PNSD) of airborne particles not only provides us with
information about sources and atmospheric processing of particles, but also plays an …

Advanced exhaust after-treatment devices for diesel vehicles are less effective in controlling
semivolatile species than the refractory PM fractions. This study investigates the oxidative …

Pollutant concentrations in the exhaust plumes of individual diesel trucks were measured at
high time resolution in a highway tunnel in Oakland, CA, during July 2010. Emission factors …

Particulate matter (PM), and in particular ultrafine particles, have a negative impact on
human health. The contribution of vehicle PM emissions to air pollution is typically quantified …

Diesel engines, a special type of internal combustion engine, use heat of compression,
rather than electric spark, to ignite hydrocarbon fuels injected into the combustion chamber …

Four heavy-duty diesel vehicles (HDDVs) in six retrofitted configurations (CRT®, V-SCRT®,
Z-SCRT®, Horizon, DPX and CCRT®) and a baseline vehicle operating without after …

Four heavy-duty and medium-duty diesel vehicles were tested in six different aftertreament
configurations using a chassis dynamometer to characterize the occurrence of nucleation …

Heavy-duty diesel drayage trucks have a disproportionate impact on the air quality of
communities surrounding major freight-handling facilities. In an attempt to mitigate this …