Method and device for operating an electrically driven vehicle in preparation for a start-up process
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsOiher Aspe, Patrick Schaedler
Life of this patent
Estimating the term…
Abstract
A device for operating an electric drive machine of a vehicle in preparation for a start-up process of the vehicle is configured to determine that a preparation mode of the vehicle for preparing for the start-up process is active, and in response, operate the electric drive machine with a time-modulated target drive torque in a preparation phase for the start-up process in order to create vibrations of the vehicle by the drive machine as haptic feedback for a driver of the vehicle when the vehicle is stationary.
Claims20
A device for operating an electric drive machine of a vehicle in preparation for a starting process of the vehicle,
- wherein the vehicle comprises a first electric drive machine for a first axle, and a second electric drive machine for a second axle of the vehicle, and
- wherein the device is configured to:
- determine that a preparation mode of the vehicle in preparation for the starting process is active;
- responsively operate the first electric drive machine in a preparation phase for the starting process with a first time-modulated target drive torque, and operate the second drive machine with a second modulated target drive torque in the preparation phase, in order to, when at a standstill, bring about vibrations of the vehicle by the drive machine as haptic feedback for a driver of the vehicle;
- and
- change the first modulated target drive torque and the second modulated target drive torque in relation to one another over time.
A method for operating an electric drive machine of a vehicle, wherein the vehicle comprises a first electric drive machine for a first axle, and a second electric drive machine for a second axle of the vehicle, the method comprising:
- determining that a preparation mode of the vehicle in preparation for a starting process is active;
- responsively operating the first electric drive machine in a preparation phase for the starting process with a first time-modulated target drive torque, and operating the second drive machine with a second modulated target drive torque in the preparation phase, in order to, when at a standstill, bring about vibrations of the vehicle by the drive machine as haptic feedback for a driver of the vehicle;
- and
- changing the first modulated target drive torque and the second modulated target drive torque in relation to one another over time.
A device for operating an electric drive machine of a vehicle in preparation for a starting process of the vehicle,
- wherein the vehicle comprises a first electric drive machine for a first axle, and a second electric drive machine for a second axle of the vehicle, and
- wherein the device is configured to:
- determine that a preparation mode of the vehicle in preparation for the starting process is active;
- responsively operate the first drive machine with a first modulated target drive torque in a preparation phase for the starting process, and operate the second drive machine with a second modulated target drive torque in the preparation phase, in order to, when at a standstill, bring about vibrations of the vehicle by the drive machine as haptic feedback for a driver of the vehicle;
- and
- change the first modulated target drive torque and the second modulated target drive torque in relation to one another over time in such a way that the vibrations of the vehicle shift locationally over time.
Dependencies are inferred from the claim text.