Zf Friedrichshafen Ag

Ramon Cordt

Mario Steinborn

Thomas Jäger

Peter Herter

Matthias Winkel

Norbert Wiencek

Andelko Vesenjak

An automatic transmission control method in which at least one of a starting clutch, a clutch coupling and transmission elements, for selection as well as engagement and disengagement of a gear step, are determined as a function of respectively existing variables representing the driving situation as well as the driver's wishes can be activated by actuators which are controlled by a control and regulation device. The method comprising the steps of collecting and normalizing the input variable into standard input variables; weighting with weighting factors and summarizing; converting the weighted input variables into intermediate variables; selecting a specific range of values which represents a specific shifting sequence; and implementing the shifting operation.

Method for controlling an automatic transmission

The invention relates to a gear brake device for a multi-speed manual transmission (), comprising a gear brake () that is arranged outside the transmission housing, that is led out of the transmission housing, and which has a power take-off shaft that is drive-connected or can be drive-connected with an input side gear shaft arrangement, said gear brake performing a synchronization function during up-shifting of the transmission in the known manner. According to the present invention, at least one PTO connection () with a drive connection to the power take-off shaft () is arranged downstream of the gear brake (), so that the power take-off shaft () is also available for a PTO function.

Gear brake device for a multi-speed manual transmission

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Friedrichshafen, Germany

Ramon Cordt