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Control of the reduction gear of a motor vehicle

A technology for deceleration devices, motor vehicles, applied in engine control, brake control systems, electric vehicles, etc., and can solve problems such as full braking, undiscovered technical or design defects, and low integrity levels

Active Publication Date: 2019-04-30
VOLKSWAGEN AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if such a control unit still generates a request signal for a dangerous braking process due to technical defects, the control unit of the reduction gear will implement the request signal, so that it is still possible, for example, to cause full braking due to a technical defect of the ACC control unit
Since the ACC control unit is only required to meet a low integrity level, technical defects or design defects in the manufacture and inspection of such control units are highly likely to remain undetected

Method used

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  • Control of the reduction gear of a motor vehicle
  • Control of the reduction gear of a motor vehicle
  • Control of the reduction gear of a motor vehicle

Examples

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Embodiment Construction

[0039] The example set forth below relates to a preferred embodiment of the invention. In this exemplary embodiment, the components of the described embodiments each represent inventive features that can be observed independently of each other, these features are also each independently of one another a development of the invention, and it is also possible to combine individual features or combinations other than those shown. Other combinations are considered to be part of the invention. Furthermore, the described embodiments can be supplemented by other features of the invention already described.

[0040] Functionally identical elements in the figures have the same reference symbols.

[0041] attached figure 1 A bird's-eye view of a motor vehicle 1 is shown, which may be, for example, a motor vehicle, in particular a passenger car or a truck. A wheel 2 , a reduction gear 3 , a control device 4 , a communication bus 5 and a vehicle component 6 are depicted in the figure. ...

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Abstract

The invention relates to a method for controlling a deceleration device (3) of a motor vehicle (1), receiving a request signal (10) for a vehicle component (6) for deceleration (9) of the vehicle via a control device (4). Protection against false triggering of the reduction gear (3) shall be provided. According to the provisions of the invention, the integrity level (11) of the vehicle component (6) is determined, and the curve (14, 25) of the deceleration performance (13) produced by the deceleration device (3) during the braking process (A) is determined as a function of time (14, 25) , the current minimum integrity level (16) at least necessary for the time-dependent curves (14, 25) determined so far is respectively determined for different points in time, and if the current minimum integrity level (16) is greater than the vehicle component (6) Integrity level (11) of the request signal (10) is subjected to performance restriction.

Description

technical field [0001] The invention relates to a method for controlling a retarder of a motor vehicle. The reduction means may include, for example, an electronically controlled brake booster for friction brakes and / or a generator for recovering kinetic energy of the motor vehicle. The reduction gear is controlled by the control device according to the request signal of the vehicle component. The vehicle component requests the vehicle to decelerate with the request signal, so that the motor vehicle is braked to decelerate. A control device and a motor vehicle having a control device according to the invention also belong to the invention. Background technique [0002] The braking process of the motor vehicle can be initiated not only by the driver using the brake pedal, but also by the driver assistance system FAS. Emergency braking can be triggered, for example, by the collision detection function of the emergency brake assist system. A deceleration process, for exampl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/172B60L7/18
CPCB60L7/18B60T8/172B60W50/045B60T17/22B60T2270/413B60W50/038B60W30/18109B60W2520/10B60W2520/105B60W2050/0045B60L2240/12F02D13/04
Inventor M·布卢门特里特M·施温德尔S·吉尔格
Owner VOLKSWAGEN AG
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