Granted Patent B2

US 12,617,295 · App. 18/270,960 · Granted May 5, 2026

Inventor: Florian Schnappauf (Hattenhofen, DE)

Assignee: Bayerische Motoren Werke Aktiengesellschaft

B60L15/2063F16H59/08B60L2240/10B60L2250/28

Abstract

Claims (27)

1 . A drive control system for a motor vehicle operable by electric motor comprising:

a gear selector;

an electronic accelerator pedal;

a brake pedal; and

an electronic control unit, which is connected to the gear selector, the accelerator pedal, and the brake pedal, wherein the electronic control unit is configured to:

deactivate a creep function in response to a first alternative automatic gear being selected; and

activate a creep function in response to a second alternative automatic gear being selected,

wherein a creep torque predefined by a creep pilot control and in the form of a drive torque is reducible depending on a braking intent of the driver starting from the creep pilot control, and

wherein a frictional braking torque is applied only when a minimum possible creep torque applied by the electric motor has been reached, and

wherein the minimum possible creep torque is the current maximum possible recuperation torque by the electric motor.

2 . The drive control system according to claim 1 , wherein when the creep function is activated, the creep torque predefined by a creep precontrol is reduced depending on the braking intent of the driver starting from the creep precontrol and only within a defined lower velocity-frictional braking torque range.

3 . The drive control system according to claim 1 , wherein the creep torque is reduced in proportion to the braking intent of the driver.

4 . The drive control system according to claim 1 , wherein the minimum possible creep torque is zero.

5 . The drive control system according to claim 1 , wherein the creep torque predefined by the creep pilot control is determined depending on a vehicle velocity.

6 . The drive control system according to claim 1 ,

wherein the gear selector has an automatically restoring toggle switch for selecting the first alternative automatic gear or the second alternative automatic gear, and

wherein every time the toggle switch is actuated counter to the direction of travel starting from one of the two alternative automatic gears, the particular other alternative automotive gear is selectable.

7 . An electronic control unit for a drive control system of a motor vehicle operable by electric motor, wherein the electronic control unit is configured to:

deactivate a creep function of the motor vehicle in response to a first alternative automatic gear being selected; and

activate a creep function in response to a second alternative automatic gear being selected,

wherein a creep torque predefined by a creep pilot control and in the form of a drive torque is reducible depending on a braking intent of a driver starting from the creep pilot control, and

wherein a frictional braking torque is applied only when a minimum possible creep torque applied by the electric motor has been reached, and

wherein the minimum possible creep torque is the current maximum possible recuperation torque by the electric motor.

8 . The electronic control unit according to claim 7 , wherein when the creep function is activated, the creep torque predefined by a creep precontrol is reduced depending on the braking intent of the driver starting from the creep precontrol and only within a defined lower velocity-frictional braking torque range.

9 . The electronic control unit according to claim 7 , wherein the creep torque is reduced in proportion to the braking intent of the driver.

10 . The electronic control unit according to claim 7 , wherein the minimum possible creep torque is zero.

11 . The electronic control unit according to claim 7 , wherein the creep torque predefined by the creep pilot control is determined depending on a vehicle velocity.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (34)