Brake system of a rail vehicle with compensation of...

B - Operations – Transporting – 60 – T

Patent

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Details

B60T 8/52 (2006.01)

Patent

CA 2748222

The invention relates to a brake system of a rail vehicle, having at least one brake actuator comprising at least one brake disk and at least one brake lining, which interacts with said brake disk, for generating a braking force in response to a braking demand. The invention provides at least one sensor device in order to measure the time profile of at least one variable, such as wheel rotational speed, wheel circumferential acceleration, braking force, braking torque or brake pressure, which represents fluctuations in the friction conditions between the wheel or wheel set assigned to the brake actuator and the rail and/or between the brake disk assigned to the brake actuator and the at least one brake lining, and to output a signal dependent on the measured variable to a control device which is designed so as to adapt the braking force generated by the brake actuator as a function of the deviation of the time profile of the measured variable from a predefined or expected time profile of the variable.

L'invention concerne un système de freinage (1) d'un véhicule ferroviaire, qui comprend au moins un actionneur de frein (2) comprenant au moins un disque de frein (4) et au moins une garniture de frein (6) coopérant avec ce dernier pour produire une force de freinage en réponse à une demande de freinage. L'invention concerne au moins un dispositif capteur destiné à mesurer la variation dans le temps d'au moins une grandeur, telle que la vitesse de rotation de roue, l'accélération circonférentielle de roue, la force de freinage, le couple de freinage ou la pression de freinage, laquelle grandeur représente des variations des conditions de frottement entre la roue ou la paire de roues associée à l'actionneur de frein (2) et le rail et/ou entre le disque de frein (4) associé à l'actionneur de frein (2) et la ou les garnitures de frein (6), et pour appliquer un signal dépendant de la grandeur mesurée à un dispositif de commande conçu pour adapter la force de freinage, produite par l'actionneur de frein (2), en fonction de l'écart entre la variation dans le temps de la grandeur mesurée et une variation dans le temps spécifiée ou escomptée de ladite grandeur.

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