31권 6호 467-472 2023 [한국자동차공학회 논문집 ]
| 제목 | 상용차량용 리타더 제동 토크에 대한 성능 모델링 |
|---|---|
| 분야 | 열유체 및 공조시스템(HVAC) |
| 언어 | Korean |
| 저자 | 신부섭(서울과학기술대학교), 손혁수(서울과학기술대학교), 임원식(서울과학기술대학교) |
| Key Words | Retarder(리타더), Oil filling ratio(오일 충진율), Hydraulic brake(유체 브레이크), Brake performance(제동성능), CFD(전산유동해석), Geometric analysis(형상 분석) |
| 초록 |
Unlike passenger vehicles, heavy-duty vehicles vary greatly in overall mass depending on the load. When braking while driving a heavy-duty vehicle at high speed using friction brakes, significantly large braking power is generated. If there is no energy release system with sufficient power capacity, the brake system will overheat and lose braking power or even cause a fire. Therefore, in order to secure the braking stability of heavy-duty vehicles, a stable auxiliary braking system that assists the friction brake system is essential. As an auxiliary braking system, a retarder is a device that obtains braking force by using fluid flow resistance, and offers the advantages of being compact and having excellent operating durability. Since the internal flow field of the retarder rotates at high speed in a state where air and fluid are mixed, it is very difficult to measure flow characteristics and predict performance using performance tests. To overcome this difficulty, this study proposes an equivalent performance model that can represent the retarder output performance by analyzing the retarder shape factor and applying the transient state analysis results of the internal flow field. |
| 원문(PDF) | 다운로드 Journal Site |