Determining a risk of aquaplaning

A slippery, risky technology, applied in the directions of brakes, transportation and packaging, input parameters of external conditions, etc., can solve problems such as motor vehicle slippage

Inactive Publication Date: 2015-06-10
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water is then present between the tire and the underlying surface such that the tire cannot transmit any guiding or braking forces of the motor vehicle to the underlying surface
The motor vehicle may then begin to skid

Method used

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  • Determining a risk of aquaplaning
  • Determining a risk of aquaplaning
  • Determining a risk of aquaplaning

Examples

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Embodiment Construction

[0047] figure 1 A flow chart of a method 100 for determining the risk of skidding is shown. The method 100 is based on the interconnection of a plurality of information items, which may be determined independently of each other from different sources. In this context, it is assumed that a motor vehicle comprises at least one wheel with tires in contact with the road. The motor vehicle moves at a natural speed on the road, wherein the tires are preferably rolled.

[0048] In a first step 105 it is determined that there is water on the road. In particular, it is possible to determine whether the road is wet, or how high the water is on the road if water has accumulated on the road. This determination in step 105 is preferably independent of the source of the water on the road. It is thus possible, for example, to take into account that water will fall in the area of ​​the motor vehicle even without precipitation.

[0049] In a step 110, precipitation in the area of ​​the mo...

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PUM

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Abstract

A method for determining a risk of aquaplaning for a motor vehicle comprises steps of determining water on a road on which the motor vehicle is traveling, determining a coefficient of friction between a tire of the motor vehicle and the road being traveled on, determining tire properties, determining precipitation, determining cartographic information items of the road being traveled on, and determining, on the basis of the determined information, whether there is a risk of aquaplaning.

Description

technical field [0001] The present invention relates to a technique for determining the risk of skidding. In particular, the present invention relates to the aeroplaning risk of a motor vehicle being driven on a road. Background technique [0002] If a motor vehicle is driving on a wet stretch of road, the tires may float in the wet and in the process of losing road grip. Water is then present between the tire and the underlying surface, such that the tire cannot transmit any guiding or braking forces of the motor vehicle to the underlying surface. The motor vehicle may then start to skid. [0003] Different proposals have been made for determining the floating risk. DE 10 2004 044 788 A1 proposes to determine the coefficient of friction between the tires of a motor vehicle and the underlying surface in order to be able to draw conclusions about the risk of afloat. Contents of the invention [0004] The object on which the present invention is based is to obtain a meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/068B60W40/064B60T8/172
CPCB60T8/1725B60W40/064B60W40/068B60W50/14B60W2530/20B60W2050/146B60W2554/00B60W2556/50B60W2520/10B60W2552/20B60W2555/20G01W1/14
Inventor G·马克
Owner DR ING H C F PORSCHE AG
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