Annotations languages:

** Description:** The mathematical model of pneumatic occasion of the working brake system (WBS) is offered with the protective device of mean of mobile (ZR). To probed influencing of area of the communicating crossing of damage of pipeline, through which a source of air is on an area between a brake faucet and brake chamber, on pressure in the pneumatic occasion of WBS ZR. The maximum size of area of the communicating crossing of damage at which the critical falling of pressure of air is in WBS ZR and there is a necessity for disconnecting defective a contour is expected.

**
Keywords:
** mathematical model, pneumatic drive, area of the communicating crossing of damage, mean of mobile

Hetsovich, Ye.M. and Rohozin, I.V. (2009), “Matematychna model pnevmatychnoho pryvodu robochoi halmivnoi systemy z zakhysnym prystro”,