Brake Dust Measurement

Brake Dust Measurement

Measuring non-exhaust emissions from braking events

A series of legislative measures has significantly reduced the amount of emissions that is being emitted by internal combustion engines of light and medium-duty vehicles. Besides these efforts, a significant reduction of emissions in the air and therefore an improvement of air quality can currently not be detected. Especially in cities, levels are still alarmingly high. This bears the question: What else effects the level of emissions in our air? Focus is now shifting to other emission sources, including the so called “Brake Dust”. Brake Dust describes the brake wear in form of emission particles created during a vehicle’s braking event. There are two different types of brake emission particles: macroscopic and microscopic particles. While the macroscopic particles are larger than 10µm, the focus of legislative efforts lies on the microscopic or nano-particles with a size of less than 2.5 µm. Those small particles are airborne, can therefore be inhaled and are suspected to have negative health effects.

With our extensive experience in both emission measurement and brake testing, we can provide a complete solution for the different areas of interest in brake dust measurement – ranging from particle number to particle mass, particle size distribution and elemental analysis of the particles. Our Brake Dust Solution can be added to existing brake dynamometers. Alternatively, a new brake dynamometer can be equipped with the system, allowing for a simultaneous usage of the dynamometer for regular brake measurements (e.g. performance, durability or NVH testing) and Brake Dust measurements.

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