Brake and Tire Non-Exhaust Emissions and Air Pollution

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Quality".

Deadline for manuscript submissions: 31 July 2025 | Viewed by 632

Special Issue Editor


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Guest Editor
Center for Environmental Research and Technology (CE-CERT), Bourns College of Engineering, University of California, 1084 Columbia Avenue, Riverside, CA 92507, USA
Interests: ultrafine particle emissions; energy engineering; aerodynamics

Special Issue Information

Dear Colleagues,

A growing body of scientific evidence shows that PM originating from non-exhaust brakes and tire emission sources significantly affects human health. At present, and likely to continue in the future, the contribution of non-exhaust emissions to the overall vehicle emission performance will continue to increase due to engine hybridization, cleaner combustion, and more efficient aftertreatment technologies. Exhaust vehicle emissions are becoming more stringent, while non-exhaust PM is generally unregulated. Despite the current and future significant contribution of non-exhaust emissions to air quality deterioration, few public policies target them explicitly. Currently, high uncertainty remains with respect to non-exhaust PM emitted under real-world driving conditions. Little is known about different factors, such as material composition, road type, driving conditions, etc., which can affect overall non-exhaust emissions. This Special Issue on brake and tire non-exhaust emissions and air pollution aims to provide a comprehensive understanding and valuable information about emission generation mechanisms that affect non-exhaust brake and tire emission performance.

Dr. Zisimos Toumasatos
Guest Editor

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Keywords

  • ultrafine particles
  • secondary organic aerosol
  • PM10
  • non-exhaust emissions
  • brakes
  • tires

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Published Papers (1 paper)

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Research

15 pages, 1945 KiB  
Article
On-Road Measurements and Modelling of Disc Brake Temperatures and Brake Wear Particle Number Emissions on a Heavy-Duty Tractor Trailer
by Misja Frederik Alban Steinmetz, Jann Aschersleben and Aspasia Panagiotidou
Atmosphere 2025, 16(5), 561; https://doi.org/10.3390/atmos16050561 - 8 May 2025
Viewed by 333
Abstract
In this paper, results are presented for an on-road measurement campaign for measuring the brake wear particles of disc brakes on a heavy-duty tractor trailer during the EU P012101 Pilot Project funded by the European Parliament. A novel approach was adopted using a [...] Read more.
In this paper, results are presented for an on-road measurement campaign for measuring the brake wear particles of disc brakes on a heavy-duty tractor trailer during the EU P012101 Pilot Project funded by the European Parliament. A novel approach was adopted using a fully open sampling system with minimal influence on air flow around the brake and brake disc temperatures. Models for brake disc heating and cooling were developed, as well as a model for the particle number emissions. It was concluded that brake wear emissions per kilometre were the highest on urban roads and the lowest on the motorway. Furthermore, when modelling heating during braking actions, the best results were seen when introducing dependencies on both the braking work and initial brake temperatures. When modelling the brake cooling, a non-linear dependence on the difference between the brake disc temperature and ambient air temperature was empirically observed. For the particle number emissions, a relationship was established between the braking work applied to the disc during the braking action and the particle number emissions of the braking action. Full article
(This article belongs to the Special Issue Brake and Tire Non-Exhaust Emissions and Air Pollution)
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