Comprehensive analysis of current primary measures to mitigate brake wear particle emissions from light-duty vehicles

Exhaust regulations and improved exhaust gas treatment systems have already initiated the trend that brings emissions from brakes and tires to the forefront of traffic-induced particulate matter. The health and environmental relevance of particulate matter has resulted in regulators, industry, and research institutions prioritising the mitigation of non-exhaust particle emissions. To this end, under the umbrella of the United Nations Economic Commission for Europe World Forum for Harmonisation of Vehicle Regulations (UNECE WP.29), the Working Party on Pollution and Energy (GRPE) mandated the Particle Measurement Programme Informal Working Group (PMP-IWG) to develop a Global Technical Regulation (GTR) for measuring brake dust. The standards and procedures defined within the GTR should eventually form the basis for the introduction of a Euro 7 limit value for brake emissions. The purpose of this measurement campaign is to provide an exemplary overview of the emission behaviour of wheel brakes and friction pairings currently available on the market and to identify possible reduction potential with regard to particulate emissions. In addition, the measurement of brake dust emissions from vehicles with different levels of electrification was considered. Electrical braking was modelled and applied to the Worldwide Harmonised Light-Duty Vehicles Test Procedure (WLTP) Brake Cycle, which has demonstrated high emission reduction potentials depending on the electrification level.

STORCH Lukas;  HAMATSCHEK Christopher;  HESSE David;  FEIST Felix;  BACHMANN Thomas;  EICHLER Philipp;  GRIGORATOS Theodoros; 

2023-05-08

MDPI

JRC133217

2073-4433 (online),   

https://www.mdpi.com/2073-4433/14/4/712,    https://publications.jrc.ec.europa.eu/repository/handle/JRC133217,   

10.3390/atmos14040712 (online),