Knorr-bremse Systeme Fur Schienenfahrzeuge Gmbh

Reinhold Mayer

Thomas Rasel

Ulf Friesen

Marc-Oliver Herden

Jörg-Johannes Wach

Stefan Schneider

Christoph Tomberger

Ralf Schmid

Andrea Etzbach

Johannes Schuhmacher

Andreas Trinkberger

Joerg-Johannes Wach

Stefan Sedlmair

Jörg Johannes Wach

Marc Oliver Herden

Severin Hartl

Wolfgang Eberle

Frank GÜNTHER

A method for improving the adhesion of a rail vehicle by conditioning selected axle(s), detects whether a higher total brake force can be achieved by changing the manipulated variable of the wheel slip at at least one unit from a current starting wheel slip to a forced wheel slip, and, if so, changes the wheel slip at at least one unit from the current starting wheel slip to the forced wheel slip by regulating the manipulated variable of the brake application force at the unit, whereby the friction ratios between the wheel and the rail changes at the subsequent units, and regulates the manipulated variable of the brake application force at the subsequent units to regulate the wheel slip, which is likewise changed by the changed friction ratios, at the units back to the unchanged manipulated variable of the starting wheel slip, optimized brake forces being produced at the units.

Method for improving the adhesion of a rail vehicle by conditioning selected axle(s)

A device for actuating valves and determines an actuation duration for a valve of a target system from a specified actuation duration for a valve of a reference system with which a required pressure change can be achieved in the reference system in order to achieve the required pressure change in the target system. The device ascertains the effective valve opening time belonging to the specified actuation duration for the valve of the reference system, calculates the effective opening time of the valve of the target system from the effective opening time said opening time of the valve of the target system being used to achieve the same pressure change in the target system as in the reference system, and then determines a valve actuation duration required to achieve the effective opening time of the valve of the target system.

Device and method for actuating valves

A device and a method for adaptive activation of a brake system of a rail vehicle are provided, wherein the brake system is controlled according to a predetermined first and second slip parameter range, wherein the first slip parameter range is a macro slip range with a higher permissible slip range, and the second slip parameter range is a micro slip range with a lower permissible slip range, and wherein a maximally available brake force in the micro slip range and an average brake force of the brake system achieved in the current slip range are determined.

Device and method for adaptive anti-skid control

A monitor for a brake apparatus of a railway vehicle, wherein the brake apparatus has at least one pressure-actuated brake actuator, upstream of which a control valve device is provided. The monitor performs an estimation of the actuator pressure applied at the brake actuator on the basis of pressure data and actuation data, the pressure data represents at least one pressure present upstream of the control valve device and the actuation data represents an actuation of the control valve device. Further disclosed is a corresponding brake apparatus for a railway vehicle, a railway vehicle and a method for estimating an actuator pressure.

Monitor for brake actuator pressure and method for monitoring brake actuator pressure

A control device for a brake system of a rail vehicle, the brake system having at least one first brake device and a second brake device, which devices can be actuated by an actuating force during a braking process. The first brake device and the second brake device are adhesion-type brake devices. The control device is capable of receiving and/or generating a loss of adhesion signal, which identifies insufficient adhesion for the first and/or second brake device, and is also designed, during a braking process, to actuate the first and/or second brake device with an increased actuating force if a loss of adhesion signal is present. Also disclosed is a brake system for a rail vehicle having a control device of this type, a corresponding rail vehicle and a method for controlling the brake system of a rail vehicle using a control device.

Braking process for a rail vehicle

The invention relates to a device for the error monitoring of chassis components of rail vehicles, including at least one vibration sensor. According to one embodiment of the invention, at least one vibration sensor is arranged on a bogie frame or on a wheel set bearing of an axis of a bogie of the rail vehicle such that the detection direction thereof has a component in the moving direction (x-direction) or a component perpendicular to the moving direction (y-direction) and at the same time a component parallel to the vertical axis (z-direction) of the rail vehicle.

Device for error monitoring of chassis components of rail vehicles

The general principle underlying the invention is a braking system that is provided with an arithmetic unit with at least two independent channels for determining the reference speeds approximated to the actual vehicle speed. The at least two determined reference speeds are used only for regulating a part of the brakes installed in the vehicle.

Braking system for vehicle provided with ABS or an anti-skid protection system

The present invention relates to a method and to a system for monitoring the effectiveness of rail vehicle braking systems and, in response to certain criteria, initiating one or more of a safety braking and a switching-off of a brake-force-limiting or brake-force-reducing device of the braking system when a defined desired slip is not reached.

Method and device for monitoring the effectiveness of vehicle braking systems

For determining a reference speed which is approximated to the actual vehicle speed, at least two wheel sensors are provided for each wheel speed to be measured. All existing wheel sensors are analyzed, and only one is selected and used for determining the reference speed as a function of the actual driving condition and of at least one defined speed criterion. At least one sensor is always available for controlling each wheel, even if one sensor is faulty.

Growing community of inventors

Karlsfeld, Germany

Reinhold Mayer