Exploring Particle Dynamics: Preliminary Investigations in Wear Particle Measurement for Tire and Road Surfaces
VOLKER ZIEGLER, Henrik Hof, Danilo Engelmann, Markus Barth, Palas GmbH, Karlsruhe, Germany
Abstract Number: 304
Working Group: Aerosols, Clouds and Climate
Abstract
This paper presents ongoing research conducted in collaboration between the BFH (Bern University of Applied Sciences) and PALAS GmbH focusing on the analysis of wear particles originating from tire and road abrasion. The ultimate objective is to develop the capability to directly measure particles from rolling tires using an ISO-kinetic sampling method, enabling precise spatial resolution of particle distribution. This entails examining particle dynamics in correlation with driving conditions and associated parameters such as slip angle, axle loads, and road surface characteristics. Additionally, the impact on Tire and Road Wear Particles (TRWP) is investigated through a progression from laboratory-based tire testing to controlled roller rig experiments and on-road trials, incorporating increasingly diverse influencing factors.
The article outlines the current preliminary project, detailing the developmental and validation steps of the requisite measurement setup and technology. Validation of the measurement setup is performed using an electric microcar as a test case, demonstrating its suitability for both stationary and mobile applications. The derivation of system requirements, selection of measurement technology, and validation of sensor choices, including particle size scanning from 3 nm to approximately 400 µm, are elucidated. Subsequently, the paper delineates the measurement concept encompassing suction, sensors, flow meters, and calibration methodologies using various particle generators. Results from different measurement concepts are presented and evaluated in the context of the overarching project goals.
Furthermore, the paper reports on measurements conducted on the microcar on the testbed, chosen for its lightweight and low power characteristics posing significant measurement challenges. Results from two operating points are discussed alongside preceding findings, offering insights into the project's progression and outlining future steps. This comprehensive overview contributes to advancing understanding of particle dynamics in relation to driving conditions and paves the way for further advancements in this field.