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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2017  >  17(3): 111-120
HU Yang, WEI Wei, ZHANG Yuan. Influence of locomotive marshalling mode on air-recharging characteristic of train[J]. Journal of Traffic and Transportation Engineering, 2017, 17(3): 111-120.
Citation: HU Yang, WEI Wei, ZHANG Yuan. Influence of locomotive marshalling mode on air-recharging characteristic of train[J]. Journal of Traffic and Transportation Engineering, 2017, 17(3): 111-120.
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Influence of locomotive marshalling mode on air-recharging characteristic of train

  • 1.

    School of Traffic and Transportation Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China

  • 2.

    Inner Mongolia First Machinery Group Co., Ltd., Baotou 014032, Inner Mongolia, China

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  • Author Bio:

    HU Yang(1986-), male, doctoral student, +86-472-84106996, 15998458102@126.com

    WEI Wei(1963-), male, professor, PhD, +86-472-84109291, weiwei43@163.com

  • Received Date: 2016-12-23
  • Publish Date: 2017-06-25
    Abstract
  • In order to quantify the influence of locomotive marshalling mode on the air-recharging characteristic of heavy-haul train, combining with longitudinal dynamics test results of Shenhua ten-thousand-tons heavy-haul trains, the air-recharging characteristics of train were analyzed, and the train air brake system model was established by using the air brake system simulation method based on airflow theory. The accuracy of the simulation system was verified by test result comparison, and the air-recharging processes on different locomotive marshalling modes, different lag times of multi-locomotives and different pressure reductions were simulated. Calculation result shows that the locomotive's quantity in the front of train has little influence on the air-recharging characteristic of first vehicle, and the difference of auxiliary reservoir pressures for two marshalling modes is less than 15 kPa. The air-charging time of single locomotive marshalling mode is 2.4 times of air-charging time of three locomotives marshalling mode. When the locomotive has centralized on the forepart of the train, the charging time reduction is nonproportional to the increase number of locomotives, which means that the air-charging time of three locomotives concentrated marshalling mode is not three tenth of the air-charging time for single locomotive marshalling train. The influence of locomotive number on air-charging time depends entirely on the marshalling mode. The air-charging time of distributed power marshalling mode with 50 kPa reduction compared to concentrated locomotive marshalling mode decreases by 37%-75%. The air-charging time of locomotive concentrated marshalling mode with 110 kPa reduction is 1.5-3.5 times of distributed power marshalling mode. The air-charging time of distributed power marshalling mode for full service braking is 30%-63% of locomotive concentrated marshalling mode. The lag time of slave control locomotive has little influence on the air-charging time. The increment of air-charging time is similar to the lag time. The quadratic fitting functions of air-charging times of four different locomotive marshalling modes for different decompressions are got, and the air-charging times of the four locomotive marshalling modes increase more slowly with the increase of decompression.

     

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