Particulate matter emissions in brake systems – Development and application of an extended measurement methodology for particulate matter emissions from dry-running friction systems

With the Euro 7 norm, brake wear emissions are regulated. The authors present a new method to measure wear particles in dry-running friction systems by integrating a sampling system into a test bench. The friction system is enclosed, and particles are transported to a measuring station during braking. Initial results show particle concentration depends on friction material, operating conditions, and correlates with wear. This method improves understanding of emissions, enabling the development of low-emission friction systems, which can help reduce particulate emissions and minimize health risks.