Vehicle axle of a two-track vehicle

The diagnostic module in the vehicle axle addresses gear set aging by measuring backlash and applying differential torque, improving steering behavior and torque transmission efficiency through historical data analysis.

DE102024134497A1Pending Publication Date: 2026-05-28AUDI AG
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Patent Information

Application Number
DE102024134497
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing vehicle axles with superimposed gear sets face challenges in accurately determining and compensating for gear set aging, leading to inefficiencies in torque transmission and steering behavior due to manufacturing tolerances and wear-induced backlash changes.

Method used

A diagnostic module in the vehicle axle measures backlash in the superimposed transmission gear set, using an electric motor to apply differential torque in both directions and record rotation angles, allowing for aging determination and compensation based on historical data analysis.

Benefits of technology

Enhances steering behavior by accurately compensating for gear set wear, ensuring smooth torque transmission and reducing hesitation during quadrant changes.

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Abstract

The invention relates to a vehicle axle of a two-track vehicle, with an axle differential (1) which can be connected at the input side to a primary drive unit (EM1) and at the output side to vehicle wheels (FR) of the vehicle axle via output shafts (4, 5) arranged on both sides, wherein the vehicle axle has an electric motor (EM2) and a superimposed transmission (7) for electric torque vectoring, and wherein the electric motor (EM2) can be controlled by means of a control unit (39) in order to change the drive torque distribution to the vehicle wheels (FR). According to the invention, the control unit (39) is associated with an evaluation module (41) which performs a backlash measurement on the superimposed transmission gear set (PG1, PG2) for determining the aging of a superimposed transmission gear set (PG1, PG2).
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Citation Information

Patent Citations

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