Particulate Matter Mass Measurement and Physical Characterization Techniques and Instrumentation for Labortory Source Testing;Final rept

摘要

One of the most important issues in the control of emissions from mobile and sources is the reduction in particulate matter (PM) emissions from diesel engines/vehicles. Over the past three decades, diesel PM emissions have been studied extensively, including emissions measurement and characterization studies and health studies. As regulations become increasingly more stringent, more advanced diesel technologies and diesel particulate filters (DPFs) are being implemented on a wider basis. As diesel technology evolves, it is important to understand how the PM component of vehicle exhaust has changed over the years in order to gauge the expected improvement in air quality. One of the most critical aspects of evaluating these changes is the application of the most robust, comprehensive and accurate measurement tools available. This includes instruments for the measurement of PM mass in real-time, PM size distributions, and portable instruments that can be used to measure PM under in-use conditions. The objective of this project is to evaluate and assess the international and domestic literature on PM measurements and measurement technology from vehicles.