Motor vehicle with brake with locking actuator and method for generating haptic feedback when parking

A control unit in motor vehicles uses drive motor torque to preload the drive train, creating a perceptible jolt during parking mode transition, addressing the lack of haptic feedback in existing systems and ensuring braking effectiveness.

DE102024139869A1Undetermined Publication Date: 2026-07-02AUDI AG
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
AUDI AG
Filing Date
2024-12-30
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Modern motor vehicles with electromechanical brakes and electric parking brakes lack perceptible haptic feedback during the transition from driving to parking mode, relying on visual or auditory signals instead, which is less intuitive for the driver.

Method used

A control unit configures the drive motor to apply a torque on the axle(s) that preloads the drive train without overcoming the braking torque, creating a perceptible jolt during the transition to parking mode, utilizing existing components.

Benefits of technology

Provides reliable haptic feedback to the driver about the parking system activation without additional hardware, maintaining familiar parking processes and ensuring the braking effect is not compromised.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a motor vehicle (1) with at least one drive motor (2), with at least two axles (3, 4), and with a braking system comprising at least one brake with a parking actuator arranged on each of the axles (3, 4). At least one control unit is provided, which is configured to apply a torque to the vehicle for switching from driving mode to parking mode after the parking actuators on one of the axles (3, 4) have been activated. The invention further relates to a method for generating haptic feedback during parking.
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