Zf Friedrichshafen Ag

Michael Walser

Thomas Jäger

Florian Schneider

Markus Eisele

Stefan Prebeck

Michael Sauter

Martin Dietrich

A method for operating a motor vehicle having an engine and an electric machine, a transmission, a battery, and an exhaust treatment system having a particulate filter. The battery discharges during a charge-depleting mode of the electrical machine and charges when the electrical machine operates as a generator such that the battery charge state moves between lower and upper limits. If a filter regeneration requirement is detected, the filter is regenerated by raising the temperature of the exhaust gas. When the need for filter regeneration is detected, the battery is discharged to below the lower limit, in the charge-depleting mode of the electrical machine, prior to the regeneration. Subsequently, to regenerate the filter, the engine is operated to raise the exhaust gas temperature by increasing the torque provided by the engine, and the electric machine operates as a generator to charge the battery and/or operate an auxiliary electrical load.

Method and controller for operating a motor vehicle

The invention concerns a method for controlling a motor vehicle () with an automatic transmission () and an automated clutch (), with a control unit (), a drive or accelerator pedal (), an element () for determining the position of the drive or accelerator pedal, and an actuating device () for selecting an operating mode of the motor vehicle (). According to the invention, when the actuating means () is operated the position of the drive or accelerator pedal () is noted or evaluated, and actuation of the clutch () is prevented until a change in the position of the drive or accelerator pedal is recognized.

Method for controlling a motor vehicle with an automated clutch

A power-splitting transmission which consists of a hydraulic power branch ( ) and a mechanical power branch. Leakage in the hydraulic power branch ( ) as well as the activation apparatuses ( ) in the mechanical power branch are supplied with a pressurized medium from a common pressure source ( ). The common pressure source ( ) transports pressure medium to the hydraulic power branch ( ), through a damping apparatus ( ), and simultaneously transports pressure medium to the activation apparatuses ( ) of the shifting elements ( ) of the mechanical power branch via a controller ( ).

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Friedrichshafen, Germany

Michael Walser