The results of temperature measurements in the brake disc of a passenger car within the speed range of the emergency braking (40…120 km/h) are given in the article. The temperature measurements were made at the entrance, mid-range and exit of the disc from the brake lining in the direction of rolling. The diagrams of the temperature changes which depend upon braking time and running speed are presented. It is shown that maximum temperature values are in the area of disc exit from the brake lining during the rolling. The analytical dependences of the disc heating temperature upon the speed at the beginning of the braking operation are obtained.

The article presents the results of study of the interaction processes of a brake shoe and a wagon on the level ground and a 30 ‰ bias during braking operation. The static characteristics of the axial forces, acting upon the brake shoe, as well as their maximum values are defined. It is shown that the car-shoe intercation is characterized by a complex oscillation process of the shoe, containing both low- and high-frequency components of the change of axial effort.