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Method for controlling a rear axle steering system of a motor vehicle

A technology for motor vehicles and rear axles, which is applied to steering mechanisms, steering rods, and automatic steering control components. It can solve problems such as loss of control and inward deflection of motor vehicles, and achieve steering movement prevention, increased driving safety, and improved driving performance. safety effect

Active Publication Date: 2021-06-22
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The driving behavior is thus severely oversteered and can lead to excessive inward deflections and loss of control of the motor vehicle in extreme cases

Method used

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  • Method for controlling a rear axle steering system of a motor vehicle
  • Method for controlling a rear axle steering system of a motor vehicle
  • Method for controlling a rear axle steering system of a motor vehicle

Examples

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Embodiment Construction

[0021] figure 1 A motor vehicle 1 is shown very schematically, which has a body 2 , a front axle 3 and a rear axle 4 in a known manner. In this case both the front axle 3 and the rear axle 4 are steering axles. The manner and method of how the front axle 3 and the rear axle 4 turn will not be described in detail here. However, a corresponding steering system is also shown very schematically, which is assigned to the front axle 3 or the rear axle 4 and with which the front axle 3 and the rear axle 4 are steered. The steering system of the front axle 3 is referred to here as the front axle steering system 5 and the steering system of the rear axle 4 as the rear axle steering system 6 . The front-axle steering system 5 is here in principle independent of the rear-axle steering system 6 , but it is also possible to establish a specific correlation, which is not mechanical but electronic.

[0022] The rear axle steering system 6 has a steering angle adjusting device 7 , which ba...

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PUM

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Abstract

The invention relates to a method for controlling a rear axle steering system (6) of a motor vehicle (1), wherein the steering angle of wheels of the rear axle (4) is adjusted. When a predetermined lateral acceleration of the motor vehicle (1) is reached, the steering angle and / or the gradient of the steering angle of the wheels of the rear axle (4) is limited depending on the friction value of the road surface on which the motor vehicle (1) is driving.

Description

technical field [0001] The invention relates to a method for controlling the steering of a rear axle of a motor vehicle, in which the steering angle of the wheels of the rear axle is adjusted, and to a device for carrying out the method. Background technique [0002] Vehicles currently produced are basically designed to understeer for safety reasons. When cornering in the limit range of lateral dynamics, the slip angle at the rear axle is smaller than at the front axle, which prevents the vehicle from turning uncontrollably inwards and allows the driver to control it. [0003] Motor vehicles with rear-wheel or rear-axle steering strongly influence the dynamic relationship of the slip angle between the front and rear axles. With a suitable counter-steering movement of the rear axle relative to the front axle, the driving behavior changes in the direction of oversteer. With a steering movement in the same direction, the driving behavior is instead shifted in the direction of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D6/00B62D137/00
CPCB62D6/003B62D7/159B60W30/045B62D6/006B62D6/005B62D6/02B62D6/10B62D6/008
Inventor A·奥博穆勒A·米哈伊列斯库F·哈廷格K·代波尔德M·艾宁C·维登曼M·奥特勒舍内尔M·莱曼
Owner AUDI AG
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