Controlling a drive system for at least one axle of a motor vehicle
AssigneeGKN Automotive AG
InventorsVolker-René Ruiters, Gerd Kaiser, Rudolf Fitz, Emanuel Blaj, Florian Sontheim, Enrique Cordero, Rainer Bruening
Life of this patent
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Abstract
A method controls a drive system for an axle of a motor vehicle, wherein the drive system has at least an electrical machine as drive unit, a drive shaft which is driven by the drive unit, a first output shaft and a second output shaft and also a first clutch which connects the drive shaft to the first output shaft and a second clutch which connects the drive shaft to the second output shaft.
Claims16
A method for controlling a drive system for at least one axle of a motor vehicle, wherein the drive system has at least an electrical machine as a drive unit, a drive shaft which is driven by the drive unit, a first output shaft and a second output shaft and also a first clutch which connects the drive shaft to the first output shaft and a second clutch which connects the drive shaft to the second output shaft, and a control unit for controlling the drive unit and the clutches, wherein the method comprises:
- a) ascertaining a first torque that can be transmitted as a maximum to the first output shaft via the first clutch and ascertaining a second torque that can be transmitted as a maximum to the second output shaft via the second clutch;
- and
- b) limiting a drive torque, that can be provided by the drive unit for driving the first output shaft and the second output shaft, depending on a sum of the first torque and the second torque.
A control unit for a motor vehicle, the motor vehicle at least having a drive system for at least one axle of the motor vehicle, wherein the drive system has at least an electrical machine as a drive unit, a drive shaft which is driven by the drive unit, a first output shaft and a second output shaft and also a first clutch which connects the drive shaft to the first output shaft and a second clutch which connects the drive shaft to the second output shaft, and the control unit arranged for controlling the drive unit and the clutches, wherein the control unit is configured to carry out steps comprising;
- a) ascertaining a first torque that can be transmitted as a maximum to the first output shaft via the first clutch and ascertaining a second torque that can be transmitted as a maximum to the second output shaft via the second clutch;
- and
- b) limiting a drive torque, that can be provided by the drive unit for driving the first output shaft and the second output shaft, depending on a sum of the first torque and the second torque.
A motor vehicle, comprising
- a drive system for at least one axle of the motor vehicle, wherein the drive system has at least an electrical machine as a drive unit, a drive shaft which is driven by the drive unit, a first output shaft and a second output shaft and also a first clutch which connects the drive shaft to the first output shaft and a second clutch which connects the drive shaft to the second output shaft, and
- a control unit arranged for controlling the drive unit and the clutches, wherein the control unit is configured to carry out steps comprising;
- a) ascertaining a first torque that can be transmitted as a maximum to the first output shaft via the first clutch and ascertaining a second torque that can be transmitted as a maximum to the second output shaft via the second clutch;
- and
- b) limiting a drive torque, that can be provided by the drive unit for driving the first output shaft and the second output shaft, depending on a sum of the first torque and the second torque.
Dependencies are inferred from the claim text.