Wabco Gmbh

Zf Cv Systems Europe Bv

Jakob Friedrich Schmidt

Andreas Goers

Mirko Brütt

Thomas Müller

Thilo Klostermann

Dominika Dombek

Jann Löll

A method for testing a pressure-medium-operated electronic brake system of a vehicle having a valve and sensor device including a control pressure inlet, a control pressure outlet, a plurality of valves selected from electrically activated inlet valves, outlet valves, redundancy valves, and pressure valves, an actual pressure sensor for measuring an actual control pressure, a setpoint pressure sensor for measuring a setpoint control pressure, and an electronic control unit, which has a signal-conducting connection to the electrically activated valves and pressure sensors, for receiving pressure signals and actuating the electrically activated valves, includes testing the setpoint pressure sensor while the control unit is in a passive operating mode, passing the setpoint control pressure directly through to the control pressure outlet, measuring the actual pressure at the control pressure outlet using a sensor, and transmitting the measured value to the control unit for plausibility checking against the setpoint pressure measurement.

Method for testing a pressure-medium-operated electronic brake system

A method for brake control of a vehicle combination () having a tractor vehicle () and a trailer vehicle () with an electrically controllable trailer control valve () changes an assigned trailer control valve characteristic curve (p_normal) stored in an electronic controller () for normal operation of the vehicle combination () or replaces it with a trailer control valve characteristic curve for special operation (p_special) in the event that a special operation of the vehicle combination () is detected or predicted, which special operation, under consideration of relevant parameters, differs from the normal operation or is evaluated as being potentially impermissible.

Method for brake control of a vehicle combination, and vehicle combination for use therewith

A fluid-operated braking system () for a tractor-trailer vehicle includes a trailer control valve (), a parking brake module (), and an electronic control unit () electrically connected to the trailer control valve () and to the parking brake module (). A pressure fluid accumulator () of the braking system () is connected to a control pressure input (P) of the trailer control valve (). A redundancy circuit controls the control pressure input (P), even during a malfunction of the control unit (). The parking brake module () includes a control valve (), a redundancy valve () and a changeover valve () controlled by an electronic switch unit () with a holding function. When the control unit () malfunctions, the last error-free switching position of the control valve () or the redundancy valve is maintained until a operationally safe resting state is reached or the ignition system is switched off.

Brake system for a vehicle train and tractor therewith

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Hannover, Germany

Jakob Friedrich Schmidt