Method for operating a vehicle, and vehicle

Patent metadata

Field	Value
Publication number	US-12187258-B2
Application number	US-202017761000-A
Country	US
Kind code	B2
Filing date	Nov 10, 2020
Priority date	Dec 10, 2019
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

A method for operating a vehicle having a transmission and a braking device during a journey, during which the vehicle, the transmission of which comprises at least one form-fitting shifting element, moves along a roadway, wherein during the journey of the motor vehicle, its shifting element is movable into formfitting interaction with at least one further component, an anti-lock braking operation is carried out by the braking device, in which at least one braking torque to be applied by the braking device to at least one wheel of the vehicle for braking the wheel is limited at least temporarily to a specifiable value by a regulating device of the vehicle in order to thereby at least temporarily prevent the wheel from locking relative to the roadway.

First claim

The invention claimed is:

1. A method for operating a vehicle having a transmission and a braking device during a journey, during which the vehicle, the transmission of which comprises at least one formfitting shifting element, moves along a roadway, wherein during the journey of the motor vehicle, its shifting element is movable into formfitting interaction with at least one further component, an anti-lock braking operation is carried out by the braking device, in which at least one braking torque to be applied by the braking device to at least one wheel of the vehicle for braking the wheel is limited at least temporarily to a specifiable value by a regulating device of the vehicle in order to thereby at least temporarily prevent the wheel from locking relative to the roadway, wherein, during the anti-lock braking operation:
at least one speed value characterizing a change in a speed of the wheel is ascertained,
at least one braking value characterizing the braking torque is ascertained, and
as a function of the speed value and the braking value, a movement of the shifting element effectuating the formfitting interaction of the shifting element with the further component is at least temporarily prevented.

2. The method as claimed in claim 1 , wherein the wheel is coupled to the transmission in a torque-transmitting manner.

3. The method as claimed in claim 2 , wherein during the anti-lock braking operation, at least one velocity at which the vehicle moves along the roadway during the anti-lock braking operation is ascertained, wherein during the anti-lock braking operation, the movement effectuating the formfitting interaction of the shifting element with the further component is prevented as a function of the ascertained velocity.

4. The method as claimed in claim 2 , wherein the vehicle has a drive motor, by which the wheel and thereby the vehicle are drivable via the transmission.

5. The method as claimed in claim 2 , wherein while the movement effectuating the formfitting interaction of the shifting element with the further component is prevented, a gear of the transmission is engaged and kept engaged.

6. The method as claimed in claim 1 , wherein during the anti-lock braking operation, at least one velocity at which the vehicle moves along the roadway during the anti-lock braking operation is ascertained, wherein during the anti-lock braking operation, the movement effectuating the formfitting interaction of the shifting element with the further component is prevented as a function of the ascertained velocity.

7. The method as claimed in claim 6 , wherein the vehicle has a drive motor, by which the wheel and thereby the vehicle are drivable via the transmission.

8. The method as claimed in claim 6 , wherein while the movement effectuating the formfitting interaction of the shifting element with the further component is prevented, a gear of the transmission is engaged and kept engaged.

9. The method as claimed in claim 1 , wherein the vehicle has a drive motor, by which the wheel and thereby the vehicle are drivable via the transmission.

10. The method as claimed in claim 9 , wherein while the movement effectuating the formfitting interaction of the shifting element with the further component is prevented, a gear of the transmission is engaged and kept engaged.

11. The method as claimed in claim 1 , wherein while the movement effectuating the formfitting interaction of the shifting element with the further component is prevented, a gear of the transmission is engaged and kept engaged.

Assignees

• Audi Ag

Inventors

• Szeppat Enrico
• Gundlach Lutz

Classifications

• B60W2510/18

  Braking system · CPC title

• B60W30/18109

  Braking · CPC title

• F16H2059/506

  Wheel slip · CPC title

• F16H2061/163

  Holding the gear for delaying gear shifts under unfavorable conditions, e.g. during cornering · CPC title

• F16H61/16

  Inhibiting  {or initiating}  shift during unfavourable conditions  {, e.g. preventing forward-reverse shift at high vehicle speed, preventing engine overspeed}   (F16H61/18 takes precedence) · CPC title