Zf Friedrichshafen Ag

Udo Gillich

Wolfgang Danz

Gerhard Eschrich

Wolfgang Runge

Ralf Vorndran

Patrick Speicher

Eduard Heilig

Wolf-Dieter Gruhle

Claus Granzow

David Wörzler

Martin Spiess

Horst Krimmel

Frank König

Raphael Zohner

Roland Geiger

Jürgen Lucas

Marcel Liesel

A drive train for a mixer drum comprises a generator which outputs a first alternating voltage to a first converter. The first converter is connected to a high-voltage direct voltage network. A second converter is also provided which is connected to the high-voltage direct voltage network and which supplies an electric motor with a second alternating voltage in order to drive the mixer drum. The drive train also comprises a high-voltage battery which is connected to the high-voltage direct voltage network. Finally, a control unit is also provided which is connected to the first and second power converters or the battery and thus controls a flow of energy via the high-voltage direct voltage network.

Drive train for a mixer drum and control device for such a drive train

A method for interlinking regulation and/or control functions for a motor vehicle, the communication structure of the control or regulation functions is defined by way of graphs containing nodes and directed gridlines, the nodes of the graph representing control or regulation functions and its directed gridlines representing defined communication paths of the control or regulation functions.

Method for cross-linking of regulation-and/or control functions for a motor vehicle

In the process according to the invention for predetermining the ratio of a continuously variable transmission (,), a dynamic driving range is generated. The actual, minimum and maximum acceleration (a_akt, a_min, a_max) is calculated. Further detected is the driver's wish to accelerate or to decelerate (a_fwu) and an acceleration (a_vorg) is determined. Also calculated is a change of ratio per time unit of the continuously variable transmission (iV_pkt), which is guided by the engine speed of rotation during adjustment of the continuously variable transmission (,).

Process for determining the operating point of a continuously variable transmission

The invention relates to a method of adjusting the transmission ratio of a continuously variable gear. The position of a current operating point (B_akt) in a predetermined driving range is constantly adjusted in accordance with the driving situation. The position of the operating point is also determined by range boundaries (UG, OG) which can be varied in accordance with the driving resistance and the driver's manner of driving. The method is characterized in that it simplifies development and application.

Method of setting the transmission ratio of a continuously variable gear

Desired performance input fuzzy logic control system for automatic

Gear-change control system for an automatic transmission

Control system for changing automatic gears

Growing community of inventors

Meckenbeuren, Germany

Udo Gillich