Nanoparticle Sensors for Automotive Particulate Emission Applications

Athanasios  Konstandopoulos, CERTH

To address growing needs for soot nanoparticle On-Board Diagnostics (OBD), optimized control of load of Particulate Filters and Portable Emissions Measuring Systems (PEMS), we have developed and further enhanced a soot sensor technology platform, which is experimentally assessed against gravimetric measurements and a multitude of laboratory particle instrumentation and is further validated in engine exhaust.  We also discuss the relationship between various metrics of particle concentration (number, area, volume, mass) and the parameters that govern the “translation” of one metric to another.