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Method of performing an automatic braking procedure

An automatic braking and program technology, applied in the direction of automatic starting devices, brakes, brake components, etc., can solve the problems of mechanical weakening of brake discs and brake drums, and achieve the effect of preventing scratches

Active Publication Date: 2016-08-17
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Continuous formation of scratches on brake discs or drums during long-term operation can lead to a non-negligible mechanical weakening of brake discs and drums, especially under high thermomechanical stress

Method used

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  • Method of performing an automatic braking procedure

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Embodiment Construction

[0027] With the help of the speed parameter, unnecessary automatic braking processes can be effectively avoided, for example in stop-and-go traffic or even when the vehicle is stationary during rain.

[0028] According to a further advantageous development of the invention, the automatic braking procedure is only executed when the vehicle speed has additionally reached at least a predetermined minimum speed. This advantageously prevents automatic braking procedures from being performed at low speeds, where the vehicle deceleration caused by the automatic braking procedures may be more noticeable to occupants of the vehicle than in high speed driving situations. As a result, deceleration of the vehicle, which may be unpleasant for occupants due to the automatic braking procedure, is avoided and driving comfort is thus increased.

[0029] A further advantageous development of the invention provides that only the rain intensity parameter is provided by the vehicle's rain sensor. ...

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Abstract

A method for avoiding reducing scoring of the brake disc or the brake drum of a vehicle driven under rainy conditions calculates a product of three parameters, and activates an automatic braking operation for the vehicle, regularly, whenever the product exceeds the pre-determined threshold level. The first parameter is a rain intensity based parameter, a measure of the current raining intensity. The second parameter is a brake-activation-free driving time parameter, representing the time elapsed since the braking system of the vehicle was activated last. The third parameter is a speed parameter, which represents a current speed of the vehicle. As the automatic braking operation is carried out, the particles of dust, water, snow and de-icing substances, adhered to the brake disc of the vehicle, and causing scoring of the brake disc, are quickly removed, thus, reducing disc scoring.

Description

technical field [0001] The invention relates to a method for performing an automatic braking procedure in wet conditions to avoid the formation of scratches on a brake disc or a brake drum of a vehicle braking device. Background technique [0002] The tendency of the brake linings of a vehicle brake to accumulate small metal particles that can cause scratches to the brake disc or drum of a vehicle brake has always been significantly increased, especially in wet weather conditions. This problem is also exacerbated in winter as the water becomes mixed with snow and de-icing salts. Continuous formation of scratches on brake discs or drums during long-term operation can lead to a non-negligible mechanical weakening of brake discs and drums, especially under high thermomechanical stress. Since the brake linings contact the brake disc or drum of the vehicle's braking device during the automatic braking procedure, moisture and dust particles can be largely removed from the brake d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/172B60T8/171B60T8/176
CPCB60T7/12B60T17/221B60T2201/124
Inventor 托马斯·斯文森伊恩·穆尔鲁道夫·丹尼尔斯
Owner FORD GLOBAL TECH LLC