Brake trains

The maximum allowable leakage of compressed air from the brake networks and norms to reduce the pressure in the main tank when checking the density is determined based on the reduction of pressure throughout the volume of the braking network 0,2 kgf/cm2 in 1 min. Out of 100 l brake Network four-axle freight car air flow from the leak will be 100 * 0.2 = 20 liters of free air in 1 min, and one axle 20:4 = 5 liters.

In calculating the filing of this Compressor consumption should increase by 30%, taking into account the processes of inhibition and office needs. When the maximum established periodicity of compressors (MF) 1 / 3 (the ratio of the feed air compressor at the time of the cycle - the filing, plus bachelor of work or stop) the minimum flow compressor unit Q for the composition, in which the n axes, will be

Q = 5 * 3 * 1,3 n = 19,5 n (rounded 20 n), l / min.

If the permissible duty cycle = 1 / 2, then Q = 5 * 2 * 1,3 n = 13 n L / min, ie for the composition of the 400 axes in MF = 1 / 3

Q = 20 * 400 = 8000 l / min,

and if MF = 1 / 2

Q = 13 * 400 = 5200 l / min.

This means that under the terms of compressed air and the normal mode of operation of such compressors can lead locomotives, having at least two compressors KT6, KT6El.

Limit the length of the locomotive with two compressors E500 with the filing of 1750 l / min with allowable duty cycle = 1 / 3 of n == 175 axes (rounded n = 180 s), and two compressors KT6El with the filing of 2750 l / min permissible MF =? (rounded 420 axes).