Volkswagen Ag

Audi Ag

Christoph Käppner

Asmus Carstensen

Artur Semke

Thomas Schulenburg

Andreas Herr

Marcus Dallmann

Jörg Fritzsche

Jörg Volkmann

Hendrik Schröder

Thomas Maischik

Jens Drückhammer

Thomas Hanisch

Holger Lange

Dimitri Schneider

Daniel Knabl

Jens Hampe

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

A method and a system () for transmitting heat for a vehicle () are described. In this case, the waste heat which is contained in the exhaust gas () of the vehicle () is stored in a heat accumulator () of the vehicle (). The thermal energy stored in the heat accumulator () is conducted to at least one heat sink (-). The heat accumulator () can be thermally coupled to the at least one heat sink (-) and uncoupled therefrom. In the coupled state the amount of heat per time unit that is conducted to the at least one heat sink is set.

Method and system for transmitting heat for a vehicle

A drive unit for a motor vehicle that has a combustion machine having an internal combustion engine () as well as an exhaust gas system via which exhaust gas can be discharged from the internal combustion engine (), and has a cyclic device that can be used to convert the thermal energy contained in the exhaust gas into mechanical work in a clockwise thermodynamic cycle, whereby the cycle comprises a heat transfer from the exhaust gas to a working medium in a first heat exchange device, as a result of which the temperature and/or the pressure of the working medium is increased, comprises an expansion of the working medium in an expansion device () for generating the mechanical work, and comprises a heat transfer from the working medium to a cooling medium in a second heat exchange device. The drive unit is refined in that the first heat exchange device comprises a first heat exchanger () and a second heat exchanger () as well as an intermediate circuit () containing a transfer medium, whereby in the first heat exchanger (), thermal energy is transferred from the exhaust gas to the transfer medium, and in the second heat exchanger (), thermal energy is transferred from the transfer medium to the working medium.

Drive unit for a motor vehicle

A heat exchange device having a first media channel for a first medium and a second media channel for a second medium is further refined in that, in at least one section of the heat exchange device, a third media channel for a transfer medium is arranged between the first media channel and the second media channel, so that the heat transfer from the first medium to the second medium takes place via the transfer medium.

Heat exchange device and drive unit for a motor vehicle

Growing community of inventors

Braunschweig, Germany

Christoph Käppner