Brake trains

Ratios of time to verify the density of inhibitory network of freight trains is being reduced in the light of compressed air from the feed network of the locomotive (in the old rules it was ignored). New regulations, closer reflect the actual conditions of exploitation, are built on the basis of air flow leakage from each four-axle freight wagon 20 l / min, which corresponds to the allowable leakage of compressed air passenger car. In the old rules for the wagon, this rate was only 15 l / min and was significantly lower than for passenger cars. Objectively, it is not fully consistent with the actual condition and operation of freight and passenger cars.

The previous regulations consistent with leakage, accompanied by a decrease in pressure at 0.2 kg/cm2 in 1 min in the whole network of freight car brake having a volume of 75 l (with auxiliary tank volume 55 l). New regulations consistent decrease in pressure 0.2 kgf/cm2 in 1 min of stopping the network capacity of 100 liters, ie, the freight car with a spare tank 78 liters. New norms to check the results of tests in the freight train length of 400 axes laden air distributors mode, taking into account the mode of operation of compressors (see response 1.1.12) and they meet modern international requirements.

To establish standards of operation allowed the pressure drop to 1,5 kg/cm2 along the length of the long compound train, and while it's charging the brake Network - 15 minutes.

Ensuring the density of the specified standards will require professional rolling stock of serious work to eliminate leaks in the freight trains. However, should be excluded cases where the driver is forced to go with trains, whose leakage exceeds the standards of the Regulations.

Final check of the density of inhibitory networks in the testing of automatic brakes usually have to train locomotive after coupling to the composition. At the same time reduce the pressure in the main tank is usually somewhat underestimated due to incomplete charging of the brake network in the time of writing, especially in dlinnosostavnyh trains.