[논문]Dynamometric Investigation on Airborne Particulate Matter (PM) from Friction Materials for Automobile: Impact of Abrasive and Lubricant on PM Emission Factor

Kim, Sung-Hun; Jeong, Mu Hyeok; Kim, Jaegyeom; Shim, Wooyoung; Kwon, Sung-Uk; Lee, Jung-Ju; Huh, Seung Hun; Pee, Jae-Hwan; Kim, Jong-Young

doi:10.3390/lubricants9120118

[해외논문] Dynamometric Investigation on Airborne Particulate Matter (PM) from Friction Materials for Automobile: Impact of Abrasive and Lubricant on PM Emission Factor 원문보기

Lubricants, v.9 no.12, 2021년, pp.118 -

Kim, Sung-Hun (Icheon Branch, Korea Institute of Ceramic Engineering and Technology, Icheon-si 17303, Korea) , Jeong, Mu Hyeok (Icheon Branch, Korea Institute of Ceramic Engineering and Technology, Icheon-si 17303, Korea) , Kim, Jaegyeom (Icheon Branch, Korea Institute of Ceramic Engineering and Technology, Icheon-si 17303, Korea) , Shim, Wooyoung (Department of Materials Sciences & Engineering, Multi-Scale Materials Laboratory, Yonsei University, Seoul 03722, Korea) , Kwon, Sung-Uk (Research Institute, Sangsin Brake Co., Ltd., Daegu 43023, Korea) , Lee, Jung-Ju (Research Institute, Sangsin Brake Co., Ltd., Daegu 43023, Korea) , Huh, Seung Hun (Analysis, Cerification & Simulation Center, Korea Institute of Ceramic Engineering and Technology, Bucheon-si 14501, Korea) , Pee, Jae-Hwan (Icheon Branch, Korea Institute of Ceramic Engineering and Technology, Icheon-si 17303, Korea) , Kim, Jong-Young (Icheon Branch, Korea Institute of Ceramic Engineering and Technology, Icheon-si 17303, Korea)

Abstract ▼ AI-Helper

Reduction of non-exhaust airborne particulate matter (PM), leading to adverse effects in respiratory system, is an urgent task. In this work, we evaluated the impact of raw materials in friction materials on PM emission due to brake wear for passenger vehicle. Time- and temperature-dependent measurements using dynamometer were made for low-steel friction materials with varied abrasives and lubricant(graphite). The brake emission factor (BEF) for graphite of varied sizes ranged from 6.48 to 7.23 mg/km/vehicle. The number concentration indicates that smaller graphite (10 μm) produces more nano-sized particles than larger size (700 μm) by >50%. Depending on abrasives, BEF was found to be varied as large as by three-times, ranging from 4.37 to 14.41 mg/km/vehicle. As hardness of abrasive increases (SiC > Al2O3 > ZrSiO4), higher BEF was obtained, suggesting that abrasive wear directly contributes to emissions, evidenced by surface topology. Temperature-dependent data imply that particle emission for SiC abrasive is initiated at lower speed in WLTC cycle, where disc temperature (Tdisc) is ~100 °C, than that for ZrSiO4 (Tdisc >120 °C). Analysis of wear debris suggests that larger micron-sized particles include fragmented Fe lumps from disc, whereas smaller particles are, in part, formed by combination of oxidation and aggregation of nano-sized particles into small lumps.

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[해외논문] Dynamometric Investigation on Airborne Particulate Matter (PM) from Friction Materials for Automobile: Impact of Abrasive and Lubricant on PM Emission Factor 원문보기

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[해외논문] Dynamometric Investigation on Airborne Particulate Matter (PM) from Friction Materials for Automobile: Impact of Abrasive and Lubricant on PM Emission Factor 원문보기

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