Audi Ag

Viktor Kell

Christian Glück

Thomas Hackner

Markus Fischer

A method detects an arc fault in an electrical circuitry. The electrical circuitry includes a controller, an energy storage and a plurality of loads each connected to the energy storage via a respective load path. A current measuring device determines current measurement values describing an energy storage current is assigned to the energy storage. Voltage measuring devices for determining voltage measurement values describing a load voltage at the respective load are assigned to said loads. The current measurement values and voltage measurement values are continuously transmitted to the controller via at least one communication link.

Method for the detection of an arc fault in an electrical circuitry, and motor vehicle

A method for operating at least one electromechanical actuator of a motor vehicle, wherein the actuator is designed to convert mechanical power into electrical power during operation of the motor vehicle in stochastic feed-in processes as a function of a feed-in efficiency predetermined by a feed-in operating point of the actuator, which electrical power is fed into an energy storage device of the motor vehicle, includes detecting the start of a feed-in process by a means of detection and, at the start of the feed-in process, setting a feed-in operating point of the actuator, wherein the feed-in efficiency is 50% or less.

Method for operating at least one electromechanical actuator of a motor vehicle and motor vehicle

An operating strategy optimized for dynamic requirements for 48V drive systems of MHEV.

MHEV operating strategy for optimized driving dynamics

A method for providing a power supply for at least one electrically heatable catalyst of a motor vehicle situated in an exhaust gas tract, wherein the motor vehicle comprises a first battery, by means of which a first voltage Uis generated, and a second battery, by way of which a second voltage Uis generated, wherein the at least one catalyst during a start phase immediately following the start of an internal combustion engine of the motor vehicle is supplied by a power Pprovided by the first battery such that the voltage Uof the first battery is imposed on the at least one catalyst, wherein the at least one catalyst is additionally supplied during the start phase by a power Pprovided by the second battery such that the voltage Uof the second battery is transformed by a DC converter to the value of the voltage Uwhich is imposed on the at least one catalyst.

Method for providing a power supply for at least one electrically heatable catalyst of a motor vehicle situated in an exhaust gas tract, and a motor vehicle comprising at least one electrically heatable catalyst situated in an exhaust gas tract of the motor vehicle

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Neustadt, Germany

Viktor Kell