Method for operating a vehicle
AssigneeVolkswagen Aktiengesellschaft
InventorsArne Bartels, Frank Baerecke, Hauke Schlimme, Kilian Foerster
Life of this patent
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Abstract
A method for operating a vehicle when stopping the vehicle and/or when holding the vehicle at a standstill after a failure in a brake system, for example, a brake-by-wire system of the vehicle. The vehicle can have an electric motor. The method has the steps of: carrying out a deceleration, in particular a regenerative deceleration of the vehicle, the deceleration being initiated automatically, and switching the electric motor to an active short-circuit after a regenerative deceleration of the vehicle in order to prevent the vehicle from rolling.
Claims13
A method of operating a vehicle when stopping the vehicle and/or when holding the vehicle at a standstill, the vehicle comprising an electric motor, the method comprising:
- decelerating the vehicle;
- switching the electric motor to an active short circuit to prevent the vehicle from rolling;
- and
- limiting, when the electric motor is switched to the active short circuit, a rollaway speed of the vehicle to less than 1 km/h,
- wherein a regenerative deceleration is carried out to decelerate the vehicle, and
- wherein the switching of the electric motor to the active short circuit is carried out after the regenerative deceleration of the vehicle.
A method of operating a vehicle when stopping the vehicle and/or when holding the vehicle at a standstill of the vehicle, the vehicle comprising an electric motor, the method comprising;
- decelerating the vehicle;
- and
- energizing a stator winding of the electric motor with phase switching of stator windings of the electric motor to prevent the vehicle from rolling,
- wherein a regenerative deceleration is carried out to decelerate the vehicle, and
- wherein the energizing of the stator winding of the electric motor with phase switching of the stator windings is carried out after the regenerative deceleration of the vehicle.
A vehicle comprising an electric motor, wherein, by energizing a stator winding of the electric motor with phase switching of the stator windings of the electric motor, after a regenerative deceleration of the vehicle is carried out to decelerate the vehicle, the vehicle is prevented from rolling.
Dependencies are inferred from the claim text.