Brake Wear is well recognized as one of the dominant sources of traffic-induced particulate matter emissions. A standardized measurement methodology is currently being developed by UNECE's Particle Measurement Program for the first time. The approach is based on isolated single brakes on dedicated brake test beds, where the test conditions can be tightly controlled.

However, the actual real-life emission behavior of a brake system depends on many changing factors depending on the vehicle and a multitude of surrounding conditions. This also makes real-driving emissions (RDE) measurement of brake dust a very challenging task, considering minimal impact of the measurement setup on the emission behavior. 

During my PhD, I am working on the development of a novel RDE brake particle sampling system supported by numerical simulation studies. This sampling system is implemented at a commercial passenger car and equipped with particulate matter measurement instruments, closely following the ongoing standardization for brake dyno emission testing. Repeated real-driving tests on a test track and on-road as well as test bed studies on various brake dynos are part of this work.