Brakes As Emitters Of Particulate Matter

Peter Fischer, Head of the Institute of Automotive Engineering at TU Graz draws attention to particulate matter emissions from brakes in a world obsessed with exhaust emissions.

- Peter Fischer

Whenever you think about emissions it’s quite likely you are thinking exhaust emissions. Opines Peter Fischer, Head of the Institute of Automotive Engineering at TU Graz in a report, “We have a problem and nobody knows how big it is. But one thing is certain: brakes cause more Particulate Matter (PM) emissions than internal combustion engines via their exhaust gases. Nevertheless, there is a shortage of basic knowledge and legal regulations.” The study steers attention away from ICE emissions and towards other particulate emissions from motorised traffic known to be harmful to health and the environment. The study cites particulate emissions from the abrasion of brake discs and brake pads and claims these far exceed PM levels that a diesel vehicle is allowed to emit through the exhaust pipe within all standards and limits.