降低DF_(11)准高速机车空压机“开-停”频率的探讨

Research to Decrease “Start Stop” Frequency of Air Compressor in DF 11 Quasi High Speed Passenger Train

分析了ＤＦ１１准高速机车总风缸的有源与无源的交替供风，以能量、质量、状态方程为依据，导出了总风缸瞬时压力变化率，经线性处理得出了机车空压机“开－停”周期Ｔ、频率ｆ简化计算式。在此基础上分析了影响ｆ的因素，指出降低ｆ所应着手的途径。

This paper analyses the alternative compressed air supplying of the main reservoir with or without air source in a DF 11 quasi high speed locomotive.During the locomotive's running, the main reservoir works in two different states (compressor in working or stopped) to output compressed air. According to the equations of energy,mass and state,the instantaneous pressure changing ratio of the main reservoir has been deduced.Through the linear processing,the simplified equations of the “start stop” cycle T and the frequency f of the locomotive's air compressor are obtained.Based on the equations just mentioned, the paper analyses the influential factors on f and points out the ways to decrease its value.