10th International Aerosol Conference
September 2 - September 7, 2018
America's Center Convention Complex
St. Louis, Missouri, USA

Abstract View


Characteristics of Tire Wear Particles Generated by Tire Simulator under Various Driving Conditions

GIBAEK KIM, Seokhwan Lee, Korea Institute of Machinery and Materials

     Abstract Number: 1091
     Working Group: Aerosol Physics

Abstract
Traffic is known as an important contributor to particulate matter (PM) in urban areas. Traffic-related particles can be classified into exhaust and non-exhaust PM. Exhaust PM can be emitted by incomplete fuel combustion and lubricant volatilization. Non-exhaust PM can be generated through tire, brake, and road wear processes and road dust re-suspension. Due to the reduction of exhaust PM resulted from stringent emission regulations, the relative contribution of non-exhaust PM is expected to increase. Among the non-exhaust PM, tire wear particles (TWPs) have been less studied and have relatively high uncertainty in physical properties.

In this study, enclosing chamber (L: 3.5 m x W: 2.4 m x H: 2.2 m) equipped with the tire simulator and sampling systems were constructed to enable the detection of tire wear particles, thus excluding particles originated from other sources. The tire simulator can control load (100~8000 N), drum speed (20~180 km/h), tire speed (20~180 km/h), slip speed (-20~20 km/h), and tilt angle (-3~3°).

TWPs were directed to the sampling ports connected with several measurement devices. DustTrack DRX, aerodynamic particle sizer (APS), fast mobility particle sizer (FMPS) spectrometer, condensation particle counter (CPC), and optical particle counter (OPC) were employed to measure the physical properties of TWPs such as number concentrations, number size distributions, mass size distributions, and mass concentrations (PM2.5 and PM10). The results suggest that the physical properties of TWPs can vary with diverse driving conditions (load, tire speed, slip speed, and tilt angle) as well as types of tires and more experiments are being carried out.