Audi Ag

Alexander Kruse

Michael Wein

Reimund Limbacher

Martin Bauer

Ruben Maier

Michael Vogt

Matthieu Joly

Christopher Hohm

Harald Brunner

Florian Then

Stefan Appel

Tobias Schneider

Jochen Ungermann

Martin Geißenhöner

Andreas Muigg

Manfred Dietrich

Thomas Urban

Daniel Andree

A method for operating a hybrid electric vehicle including an electric machine, a battery and an internal combustion engine, the load point of which is shifted upward to drive the electric machine for charging the battery in the generator mode, wherein a target state of charge of the battery is specified; a required target charging capacity is determined; the load point of the internal combustion engine initially is only shifted upward within an engine-map range of the internal combustion engine.

Method and control apparatus for operating a hybrid electric vehicle

This disclosure relates to a method for operating a start-stop system of a motor vehicle. The method include cutting off a drive motor when the speed of the motor vehicle falls below a speed threshold. The speed threshold is determined depending on at least one piece of environment-related information.

Method for operating a start-stop system and a motor vehicle

A device for operating a drive unit generates setpoint values for controlling the drive unit based on, for example driver-generated input parameters. The device generates a first setpoint value for a front-axle drive and a second setpoint value for a rear-axle drive and includes a load impact damping unit which, in the event of a risk of load impacts, processes the setpoint values so as to damp the load impacts. The load impact damping unit is divided into a first load impact damping filter for processing the first setpoint value for the front axle drive and into a second load impact damping filter for processing the second setpoint value for the rear axle drive, and supplies corresponding filtered setpoint values to these drives.

Device for operating a drive unit of a motor vehicle

A method for controlling the operation of an arrangement of at least two electric machines coupled to different wheels of a motor vehicle and connected to a battery which provides an actual minimum and maximum limiting current for the electric machines. Desired torques are provided for the electric machines by a drive control logic. A desired current resulting from the desired torque is ascertained for each electric machine, and the sum of the desired currents are compared with the maximum and minimum limiting current. If the sum lies outside an interval defined by the limiting currents, the desired currents are adjusted using at least one change rule such that the sum of the desired currents lies within the interval. Adjusted desired torques are determined from the adjusted desired currents and used to control the electric machines.

Method for controlling the operation of an arrangement of at least two electric machines, and motor vehicle

A vehicle has at least two drive wheels which can be driven in each case by single-wheel drive units which are in particular of structurally identical dimensions and which can be actuated by means of a control device, control device determines a target torque which, in a torque distribution unit, can be divided into a first target torque for the first drive unit and a second target torque for the second drive unit. The torque distribution unit is assigned an adjustment unit by means of which the first and/or the second target torque can be corrected with an adjustment factor which can be determined as a function of a torque difference, arising owing to manufacturing and/or component tolerances, between the drive units.

Vehicle having at least two single-wheel drive units

A method operates a hybrid drive of a motor vehicle, which hybrid drive has an internal combustion engine and a first electric machine. The method generates, in response to a predefined setpoint torque value, a composite torque which drives the motor vehicle. In a transient operating mode which occurs during a change of the predefined setpoint torque value by a value, the composite torque is generated by summing a drive torque which is generated by the internal combustion engine and a drive torque which is generated by the first electric machine. At least one second electric machine is provided which is switched on during the transient operating mode in order to generate the composite torque of the internal combustion engine and of the first electric machine.

Method for operating a hybrid drive of a vehicle

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Ingolstadt, Germany

Alexander Kruse