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자료유형
학술저널
저자정보
우상희 (한국기계연구원) 김용래 (한국기계연구원) 이선엽 (한국기계연구원) 최영 (한국기계연구원) 이석환 (한국기계연구원)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제36권 제3호
발행연도
2020.6
수록면
346 - 359 (14page)
DOI
10.5572/KOSAE.2020.36.3.346

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이 논문의 연구 히스토리 (10)

초록· 키워드

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Brake wear particles (BWPs) were measured using a brake dynamometer to understand the characteristics of fine dust generated by brake wear under various driving cycles. WLTC (word harmonized light-duty vehicle test cycle), Novel braking cycle which was specialized for brake particles measurement, and NIER (national institute of environment research) driving cycles which was used to determine the exhaust emission factor in Korea were utilized. The experimental results showed that emission factors of PM<SUB>10</SUB> and PM<SUB>2.5</SUB> in three driving modes were ranged with 0.21~0.61 mg/km/brake and 0.12~0.36 mg/km/brake, respectively. NIER driving cycle showed the highest number of braking among the three cycles, which caused the highest emission factor. However, the braking dissipation energy of each stop in the test cycle rather than the number of braking had a greater effect on the generation of BWPs. Although the same pad and disc were used, it was confirmed that the particle size distributions were different for each test cycle. The BWPs showed a unimodal distribution with mode diameter of around 2~3 μm based on aerodynamic diameter and showed a bimodal distribution with mode diameters of 600 nm and 2.8 μm based on optical diameter. Comparing the 15 NIER test cycles classified by average driving speed, the faster the speed, the smaller diameter of BWPs generated. The ratio of BWPs generated by brake drag varied by 4~53% according to the steps of NIER test cycle. Specialized new driving cycle or modified NIER driving cycle in consideration of the driving speed and brake dissipation energy are required to measure the emission factor of BWPs.

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Abstract
1. 서론
2. 연구 방법
3. 결과
4. 결론
References

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