Method for operating a motor vehicle, and corresponding motor vehicle
A method for operating a motor vehicle, which has at least one electric machine, is provided and may include providing a recuperation torque aimed at decelerating the motor vehicle at least temporarily, setting the recuperation torque to a target value, and selecting a default value for the recuperation torque from a plurality of default values. A first recuperation operating mode may be carried out when a default value is selected on the operating element which corresponds to a recuperation torque other than zero. The first recuperation operating mode may be switched to a second recuperation operating mode when a default value is selected on the operating element which corresponds to a recuperation torque of zero and when an accelerator pedal of the motor vehicle is actuated. The disclosure further relates to a motor vehicle.
1 . A method for operating a motor vehicle, which has at least one electric machine, the method comprising:
providing a recuperation torque by the at least one electric machine aimed at decelerating the motor vehicle at least temporarily;
setting the recuperation torque to a target value; and
selecting a default value for the recuperation torque from a plurality of default values by an operating element, the plurality of default values including at least one default value corresponding to a recuperation torque of zero,
wherein the target value is determined in a first recuperation operating mode as a function of the default value and in a second recuperation operating mode as a function of a driving speed of the motor vehicle,
the method further comprising:
implementing the first recuperation operating mode when a default value is selected on the operating element which corresponds to a recuperation torque other than zero; and
switching the first recuperation operating mode to the second recuperation operating mode when a default value is selected on the operating element which corresponds to the recuperation torque of zero and when an accelerator pedal of the motor vehicle is actuated.
2 . The method according to claim 1 , wherein the target value in the first recuperation operating mode is additionally set as a function of the driving speed.
3 . The method according to claim 1 , wherein the target value is set such that the driving speed is set to a target driving speed.
4 . The method according to claim 3 , wherein the target driving speed is determined from a setting of the operating element and/or from a driver assistance device.
5 . The method according to claim 3 , wherein the target value is determined as a function of a second default value for the recuperation torque when the driving speed is greater than the target driving speed.
6 . The method according to claim 5 , wherein the second default value is selected from the plurality of default values.
7 . The method according to claim 3 , further comprising:
determining a driving speed difference between the driving speed of the motor vehicle and a driving speed of a vehicle traveling ahead; and
setting the target driving speed as a function of the driving speed difference.
8 . The method according to claim 1 , further comprising:
determining an angle of inclination of the motor vehicle; and
setting the target value as a function of the angle of inclination.
9 . The method according to claim 1 , wherein the target value is set as a function of a charge state of an energy storage device connected to the electric machine.
10 . A motor vehicle comprising:
at least one electric machine configured to provide a recuperation torque aimed at decelerating the motor vehicle at least temporarily and to set the recuperation torque to a target value; and
an operating element configured to select a default value for the recuperation torque from a plurality of default values, the plurality of default values including at least one default value corresponding to a recuperation torque of zero,
wherein the motor vehicle is configured to determine the target value in a first recuperation operating mode as a function of the default value and in a second recuperation operating mode as a function of a driving speed of the motor vehicle,
wherein the motor vehicle is configured to implement the first recuperation operating mode when a default value is selected on the operating element which corresponds to a recuperation torque other than zero, and
wherein the motor vehicle is further configured to switch from the first recuperation operating mode to the second recuperation operating mode when a default value is selected on the operating element which corresponds to the recuperation torque of zero and when an accelerator pedal of the motor vehicle is actuated.