Robert Boschgmbh

Getrag B.v. & Co. Kg

Boyke Richter

Thomas Huber

Manfred Hellmann

Rene Schenk

Alexander Maass

Uli Christian Blessing

Thomas Hoffmeister

Frank Steuernagel

Peter Khatchikian

Peter Deuble

Sasha Dreschmann

Sascha Dreschmann

Ellen Mailaender

A hybrid drive system for a motor vehicle includes an internal combustion engine and at least one electric motor, each driving wheels of the motor vehicle. The internal combustion engine is coupled to the corresponding wheels via a first multispeed transmission. The electric motor is coupled to the corresponding wheels via a second multispeed transmission.

Hybrid drive system

The invention relates to a method for operating a drive device () of a motor vehicle, said drive device () comprising at least one combustion engine () and at least one electric machine (), as well as a dual clutch transmission () which can be functionally connected to the combustion engine () and which comprises a first sub-transmission (), a first clutch () being associated therewith, and a second sub-transmission (), a second clutch () and the electric machine () being associated therewith. In a purely electrical driving operation, the electric machine () is operated in a motorized manner, a driving gear is engaged in the second sub-transmission (), and both clutches () are disengaged. According to the invention, in order to start the combustion engine () during the electric driving operation, the second clutch () is engaged so as to drive the combustion engine () by means of the electric machine (), a gear is engaged in the first sub-transmission (), said gear having a lower gear ratio than the engaged driving gear of the second sub-transmission (), the first clutch () is brought into a slip position and the second sub-transmission () is subsequently brought into a neutral position, the rotational speed of the electric machine () is increased at least to a starting rotational speed for the combustion engine () with the slip of the first clutch () being adjusted to maintain a forward torque of the motor vehicle, and the combustion engine () is started once its starting rotational speed has been reached. In addition, the invention relates to a device for operating a drive device of a motor vehicle.

Method and device for operating a drive device

The invention relates to a method for starting the movement of a hybrid vehicle, which has a first () and a second drive unit (), the first drive unit () being disposed on a first sub-transmission (T) of a twin-clutch transmission having two sub-transmissions (T, S; T, S), In order to avoid rolling backwards when starting to move the hybrid vehicle in an attempt to start the movement using the first drive unit (), the second drive unit () is started when starting the movement of the hybrid vehicle using the first drive unit (), without interrupting the stress applied on the drive train () comprising the twin-clutch transmission.

Method and device for starting the movement of a hybrid vehicle

In a method for controlling a generation of an alternating current in a vehicle equipped with a battery and an inverter, the inverter is electrically connectable to the battery in order to generate an alternating current from a direct current of the battery for electrical devices that are electrically connectable to the inverter, and the battery is recharged when a charging state of the battery is equal to or less than a threshold value that is sufficient to generate an alternating current required for the electrical devices.

Method for controlling a generation of an alternating current in a vehicle

Growing community of inventors

Karlsruhe, Germany

Boyke Richter