We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Characterization of airborne tire particle emissions under realistic conditions on the chassis dynamometer, on the test track, and on the road
Summary
Researchers developed a new tire and road wear particle (TRWP) sampling system and characterized airborne emissions under real-world conditions on a chassis dynamometer, test track, and public road. Emissions showed a bimodal size distribution with dominant modes at ~10 nm and 270 nm, with SEM/EDS revealing two particle formation mechanisms and confirming tire rubber as a major source of ultrafine airborne particles.
Tires have already been identified as a major source of microplastics and airborne particles,and with the increasing use of alternative powertrains and heavier vehicles, the importanceof tire and road wear particles (TRWP) is growing. As part of this comprehensive study, anew sampling system was developed to measure the particle number concentration (PNC)of TRWP emissions from 4 nm to 10 mm. Airborne emissions were characterized on the chas-sis dynamometer using an aerosol fast sizer, which revealed a bimodal size distribution witha dominant ultrafine emission mode at approximately 10 nm and a larger mode at 270 nm.Investigation of the collected particles using scanning electron microscopy (SEM) and energydispersive X-ray spectroscopy (EDS) provided insight into two different formation mecha-nisms for ultrafine particles including evaporation and condensation. The emission indicesof four driving cycles (WLTC Class 3, LA4, US06, and Großglockner) were determined on thechassis dynamometer and compared with a real driving emission test. The influence of roadsurface and lateral acceleration on the amount of TRWP and their size distribution wasinvestigated by mobile measurements on the test track and on the real road. Both thechoice of test cycle and the test environment have a significant influence on detected tireemissions: The number of particles emitted per kilometer differs strongly between the driv-ing cycles, while the test environment and cornering have an influence on the particle sizedistribution.
Sign in to start a discussion.
More Papers Like This
Shades of grey—tire characteristics and road surface influence tire and road wear particle (TRWP) abundance and physicochemical properties
A suite of experiments characterized how tire type, compound, and road surface properties influence tire and road wear particle (TRWP) size, morphology, and emission rates, finding significant variation across tire and road combinations relevant to predicting environmental exposure.
Analysis of TRWP Particle Distribution in Urban and Suburban Landscapes, Connecting Real Road Measurements with Particle Distribution Simulation
Researchers combined road-based tyre and road wear particle emission sampling with particle distribution simulations at a high-traffic urban intersection, finding that TRWP concentrations correlated with vehicle dynamics such as braking and acceleration, and that air humidity and dust resuspension significantly influenced particle measurements in the field.
Analytical Investigation of Tire Induced Particle Emissions
This automotive engineering study measured the size distribution of fine dust particles (under 10 micrometers) generated by tire wear, finding that tire-derived particles represent a significant non-exhaust source of urban particulate matter. As electric vehicle adoption reduces exhaust emissions, tire and brake wear particles will become a proportionally larger component of urban air pollution. These tire wear particles are also a major source of microplastic contamination in road runoff.
Characteristics of Real-world Non-exhaust Particulates from Vehicles
Researchers characterized non-exhaust particulate emissions from vehicle tire and road wear, collecting atmospheric PM samples with a high-volume quartz filter sampler and using pyrolysis-GC/MS to analyze tire rubber markers including polycyclic aromatic hydrocarbons and heavy metals, quantifying the contribution of tire-brake-road wear particles to urban air pollution.
On-Road Vehicle Measurement of Tire Wear Particle Emissions and Approach for Emission Prediction
An instrumented measurement vehicle was developed to quantify tire wear particle emissions under real-world on-road conditions, identifying key driving parameters such as speed, load, and cornering that govern emission rates. The study supports the development of emission factors and regulatory standards for non-exhaust tire-derived microplastic pollution.