German engineering and technology company Bosch is using a test bench to measure particle emissions from brake pads and discs, aligning with the upcoming Euro 7 standards.
The new Euro 7 legislation, set to take effect in November 2026, will introduce particle emission limits for non-exhaust sources, including braking systems and tires. This legislation will apply to newly registered vehicle types and will later extend to the aftermarket.
In preparation for these standards, Bosch has equipped a brake test rig with new measurement technology, designed for high-precision assessments of total emissions and particle size distribution during test cycles. This technology exceeds the requirements of the Euro 7 standard and measures particles as small as PM1 in addition to PM10 and PM2.5.
The test bench, developed with an investment of over one million euros, enables dynamic particle measurement throughout the entire test cycle. It provides detailed information on the emissions behavior of braking systems in various driving conditions. The data gathered helps Bosch engineers understand when and under what conditions particles are generated, aiding in the development of low-emission friction materials.
Bosch says its research aims to meet future emissions limits and also to reduce emissions of ultra-fine particles, which are particularly harmful to health and not yet regulated by Euro 7. The results from these tests will be used to enhance Bosch brake pads and discs, potentially leading to reduced particle emissions and lower wear rates.
