Gkn Automotive Gmbh

Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg

Getrag Driveline Systems Gmbh

Michael Höck

Theodor Gassmann

Hans-Peter Nett

Jan Haupt

Werner Hoffmann

Harwin Niessen

Bernd Oberhausen

Matthias Adelt

Juan Manuel Micó Soler

Klaus Matschker

Theo Gassmann

Klaus Mätzschker

Peter Obergünner

Peter OBERGÜNNER

Klaus MÄTSCHKER

Harwin NIEßEN

A drive system for an axle of a motor vehicle can be controlled. The drive system can have at least one drive unit driving a drive shaft, a first output shaft, and a second output shaft, as well as first and second clutches connecting the drive shaft to the first and second output shafts, respectively. A control unit of the drive system controls the clutches to operate at least at certain operating points with a micro-slip control in which a speed differential between the drive shaft and the output shaft of >0 revolutions per minute (RPM) and <50 RPM is set for the respective clutch. A travel state of the motor vehicle can be detected, including detecting: traveling straight ahead and cornering in the pull mode, and a control strategy can be selected and applied for each clutch, wherein the control strategy is different for different travel states.

Controlling a drive system for an axle of a motor vehicle

A drive torque of an electric motor for driving a driveline included in a driveline assembly of a motor vehicle can be controlled as a function of the vehicle speed in such a way that, when the vehicle speed is below a predetermined threshold value, the electric motor is controlled in a high torque mode and, when the vehicle speed is above the threshold value, the electric motor is controlled in a low torque mode.

Controlling a drive torque and drive train assembly

To reduce the complexity and the outlay involved in the development and implementation in a vehicle of systems and methods known from the prior art for operating a differential-free, clutch-controlled balancing unit having a first clutch and a second clutch, the invention provides for the first clutch and the second clutch to be controlled independently of the driving conditions, and always using the same variable controlled variable of the same value.

Balancing unit of a motor vehicle and method for controlling same

Controlling a driving torque of a driveline assembly of a motor vehicle comprises: monitoring a speed of a first drive axle; monitoring a speed of a second drive axle; determining a target speed for the electric machine from at least one of the speeds of the first and the second drive axle controlling the electric machine in target speed mode as a function of the at least one speed; determining a target torque from the speed of the first drive axle and the speed of the second drive axle; controlling the clutch in a target torque mode as a function of the speed of the first drive axle and the speed of the second drive axle.

Driveline torque control

A mechanical and electric drive train of a motor vehicle having an internal combustion engine and an electric motor, includes a conventional drive train which is driven by the internal combustion engine, an electric motor drive train which is driven by an electric motor, a shift gearbox arranged in the conventional drive train, and at least one axle drive unit for driving axle drive members which are connected or are connectable via a clutch to driving wheels of at least one axle of the motor vehicle. The electric motor drive train is connected between the shift gearbox and the axle drive members to the drive train via at least one first clutch device, wherein the connection can be produced and eliminated by actuation of the first clutch device.

Vehicle electric and mechanical drive train

An axial setting device comprising two plates () which are relatively rotatable and coaxially supported relative to one another and between which balls are guided in pairs of ball grooves () in the plates (), with the depth of said pairs of ball grooves () being circumferentially variable; of the plates (), one is axially supported and one is axially displaceable against the elastic returning forces of spring means; at least one of the plates () is drivable via a driveline by a driving motor (). Within the driveline, between the driving motor () and the drivable plates (), there is inserted a switching coupling ().

Axial setting device with a switching coupling incorporated into the drive

Growing community of inventors

Neunkirchen-Seelscheid, Germany

Michael Höck