10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Physical Characterization of Tire Wear Particles Generated by Tire Simulator According to the Tread Wear Rate of Tires
SEOKHWAN LEE, Gibaek Kim, Korea Institute of Machinery and Materials
Abstract Number: 1051 Working Group: Aerosol Physics
Abstract Vehicles emit particulate matter (PM) through their exhaust and non-exhaust sources. Exhaust PM can be generated by incomplete fuel combustion and lubricant volatilization. Non-exhaust PM can be emitted through tire, brake, and road wear processes and re-suspension of road dust. Due to the increasingly stringent regulations of the vehicle exhaust emissions, the relative contribution of non-exhaust PM become more significant. Among the non-exhaust PM, tire wear particles (TWPs) having relatively high uncertainty in physical properties have been less studied.
In this study, the tire simulator was operated in a closed control chamber (L: 3.5 m x W: 2.4 m x H: 2.2 m) to enable the detection of TWPs, thus excluding contamination particles originated from the other sources. TWPs were introduced into the sampling ports connected with several measurement instruments. DustTrack DRX, aerodynamic particle sizer (APS), fast mobility particle sizer (FMPS) spectrometer, condensation particle counter (CPC), and optical particle counter (OPC) were used to measure the various 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 be affected by the tread wear rate of tires.