Volkswagen Ag

Audi Ag

Chimera Biotec Gmbh

Hendrik Schröder

Jörg Möckel

Rainer Petersen

Jan-Christoph Albrecht

Andreas Lutz

Christoph Käppner

Stefan Hanke

Rüdiger Kusch

Lars Hofmann

Marc Düvel

Alexander Wess

Christian Meissner

Alexander Weß

Michael Adler

Christian Meißner

Dimitri Schneider

Oliver Ludwig

Özgür Aktas

Christian Meiβner

Alexander Weβ

Mark Spengler

Salim Hobusch

Bartosch Czapnik

Technologies and techniques for operating a flying object, such as a battery-operated flying object that includes at least one battery system and at least one electric drive unit. During an emergency, a first power limit of the battery system can be increased to a second power limit of the battery system such that a safe emergency landing of the flying object is possible.

Method for operating a flying object, and flying object

The disclosure relates to a fuel cell system comprising a fuel cell stack for providing an electrical power Pdepending on a power demand, at least one auxiliary unit for operating the fuel cell stack with an electrical power consumption P, at least one consumer with an electrical power request P, and a control unit for regulating the power demand as well as a method for controlling such a fuel cell system. It is provided that the control unit is configured to selectively operate the fuel cell system in a first operating mode or in a second operating mode, whereby the fuel cell stack is turned off depending on the operating mode upon the falling below of an optimal efficiency degree operating point P(&#x3b7;) of the fuel cell system or a minimum operating point Pof the fuel cell stack. In particular, at least one auxiliary unit is also turned off in the first operating mode, when the optimal efficiency degree operating point decreases.

Fuel cell system and method for operating a fuel cell system

The invention relates to a method for setting a driving speed of a motor vehicle on a route. A control device of the motor vehicle sets the driving speed depending on an operating position limited by two extreme positions of a pedal device of the motor vehicle, which may be operated by a driver, wherein the control device detects the operating position of the pedal device, and depending on the detected operating position, determines in at least one specified driving mode a target driving speed corresponding to the respective operating position, and the control device sets the driving speed corresponding to the respective target driving speed by means of a closed loop control as long as the respective operating position is detected. The setting in this case takes place independently of a current condition of the route. The invention also includes a motor vehicle.

Method for setting a driving speed of a motor vehicle, and motor vehicle with a control device

A method for controlling an automatic hybrid transmission of the motor vehicle is disclosed, wherein the hybrid transmission has at least two engageable gear stages with different transmission ratios, and wherein at least one variable driving range, i.e., at least one specific dynamic powertrain path is engageable such that the entire output torque of the output shaft is formed from the respective drive torque of the internal combustion machine and the electric machine. Losses of comfort to the driver and/or the danger of component damage and the associated costs are reduced by checking during a stopping process, and/or during a deceleration process of the motor vehicle and a downshifting that is requested in this context whether there is a specific operating situation, and the variable driving range is engaged in the event that a specific operating situation exists.

Method for controlling an automatic hybrid transmission of a motor vehicle, in particular a DHT transmission, or respectively a hybrid transmission for a motor vehicle, in particular a DHT transmission, working according to the aforementioned method

The invention relates to a shifting device for the selection of rotationally fixed non-rotational couplings of a plurality of coaxial shafts of a motor-vehicle transmission, comprising a displacement sleeve, which can be axially displaced in relation to a housing and which has internal teeth having two axial toothed sections spaced apart from each other by an axial gap, and which coaxially surrounds a plurality of toothed elements that are arranged axially adjacent to each other and that are each non-rotationally connected to one of the shafts and that each have external teeth corresponding to the internal teeth of the displacement sleeve, wherein the displacement sleeve has a first sleeve part and a second sleeve part that are connected to each other in a manner that is axially fixed and rotationally decoupled, wherein the first sleeve part is a carrier of the first axial toothed section and the second sleeve part is a carrier of the second axial toothed section.

Shifting device and drive unit for a motor vehicle

A method for operating an output apparatus of a motor vehicle performed by the output apparatus and including receiving a first consumption signal that indicates a consumption relating to a first form of energy measured in a first unit of measurement, receiving a second consumption signal that indicates a consumption relating to a second form of energy measured in a second unit of measurement, providing at least one reference element that indicates a respective predetermined standard consumption, displaying the at least one reference element on a display unit, and controlling a position of a consumption display element on the display unit based on the two consumption signals and, as a result, adjusting a relative position of the consumption display element with regard to the at least one reference element.

Output device of a motor vehicle and associated operating method

The invention relates to a device for converting voltage comprising a converter and a controller, wherein the converter has three half bridges, each with four transistors, and at least one half bridge has two switching elements, wherein by means of a first switching element, a central tap between two diodes is connected in a first switched position to a neutral point of a DC link capacitor and, in a second switched position, to a positive charging connection for an external DC voltage source, and by means of a second switching element, a central tap of the half bridge is connected in a first switched position to a pole of an AC voltage connection, and in a second switched position to a negative pole of a DC voltage connection. Moreover, the invention relates to a traction network as well as a method for charging a battery of a traction network by means of an external DC voltage source.

Device for converting voltage, traction network and method for charging a battery

A vehicle-electrical-system assembly and a method for operating a vehicle electrical system of an electrically drivable transportation unit. The method includes determining a present electrical power consumption of a component having dynamic power-consumption behavior at a first time, providing a base value by smoothing the power-consumption behavior over time, defining a power reserve for the component by adding a static power offset to the base value, and limiting a vehicle-electrical-system power available for a traction machine of the transportation unit to provide the defined power reserve for the component.

Vehicle-electrical-system assembly and method for operating a vehicle electrical system of an electrically drivable means of transportation having a fuel cell

A transmission arrangement for a hybrid vehicle includes an electric machine having a stator and a rotor. An electric-motor input shaft is connected to the rotor. A Ravigneaux gear set has a carrier, a set of long planets, a set of short planets, a ring gear, a first sun, and a second sun. The short planets mesh with the long planets. The ring gear meshes with the short planets and is connected to an output shaft. The first sun meshes with the short planets and is connected to the electric-motor input shaft. The second sun meshes with the long planets. The carrier is fixable on a transmission housing by a brake. The carrier, the second sun and an internal-combustion-engine input shaft are selectively couplable to one another in a torque-transmitting manner by a shiftable clutch arrangement. A hybrid vehicle and a drive train for a hybrid vehicle are also provided.

Transmission arrangement and drive train for a hybrid vehicle, and hybrid vehicle

A method to distribute recuperation power for a vehicle including determining the recuperation power, detecting a respective setpoint power of at least one energy consumer, distributing the recuperation power to electrical energy sinks, which comprise an energy store and the at least one energy consumer, depending on the respective setpoint power of the at least one energy consumer, to the energy sinks such that an average actual power of the at least one energy consumer corresponds to the respective setpoint power of the at least one energy consumer.

Growing community of inventors

Sickte, Germany

Hendrik Schröder