DOI QR코드

DOI QR Code

Experimental Study on the Improvement of Release Application Characteristics of Pneumatic Brakes for Freight Train

화물열차의 공기제동 완해성능 향상에 관한 실험적 연구

  • Published : 2001.12.01

Abstract

Experimental study has been conducted to clarify the pneumatic characteristics of brake system for freight train and enhance the performance of diaphragm valve. Empty-load and diaphragm valves are installed in pneumatic brake system for freight trains of KNR (Korean National Railroad). Experiments are conducted by using freight train and diesel locomotive in operation. From the experimental results. new quick release valve shortens release time after brake application. In case of normal brake application, the release time is shortened to 34% of the original diaphragm valve. Reducing the release time of pneumatic brake system will be helpful to assure brake-release application and save maintenance efforts like wheel grinding.

Keywords

References

  1. Bharath, S., Nakra, B. C. and Gupta, K.N., 1990, 'A Distributed Mathematical Model for Pressure Transient Analysis in Railway Pneumatic Brake System' Int. J. Mech Sci., Vol. 32, No.2, pp. 133 -145 https://doi.org/10.1016/0020-7403(90)90113-W
  2. Murtaza, M. A. and Garg, S. B. L., 1989, 'Brake Modelling in Train Simulation Studies' IMechE Part F, Vol. 203, pp. 87-95
  3. Abdol-hamid, K. and Limbert, D. E., 1988, 'The effect of leakage on railroad brake pipe steady state behavior' ASME J. Dynamic system Measurement and Control, Vol. 110, pp. 329-335
  4. 熊谷則道, 長谷川泉, 永賴和彦, 1990, '鐵道車輛空氣ブレ-キ機器の減壓特性,' 日本機械學會論文集(B), 第56券 529號, pp, 2672-·2677
  5. 남성원, 문경호, 이동형, 최경진, 권석진, 1999, '막판식 공기제동장치의 압력 특성에 관한 실험적 연구,' 대한기계학회 추계학술대회논문집 B, pp. 706-71l
  6. 客貨車槪論, 1993, 交友社, pp. 128-245
  7. Robert, L. J, 1982, Railway Brakes, Westinghouse, pp. 133-158