Automatic Actuation of the Auxiliary Brake in the Two-Circuit Air Brake System

The work presented above concerns the new control method of the auxiliary brakes in air brake systems. This design consists in the application of the automatic protection valve operating on the spring actuators at the axle equipped with the failured circuit. Thus the automatic protection valve substitutes the hand valve of the auxiliary brake.

In the work has been executed the critical evaluation of the existing arrangements with hand operated control valve and presented the characteristics of the pressure dependences in control system, of the reaction time of the brakes and of the effectiveness obtained in the initial testing in comparison with the conventional control system.