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Method and system for signaling and aquaplaning condition of a tyre fitted on a vehicle

A technology of tires and signals, applied in the direction of brakes, etc., can solve the problems of reduced ground contact area and reduced grip

Active Publication Date: 2011-09-21
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Such a deformation leads in particular to a reduction of the footprint area and thus to a reduction of the grip between the tire and the rolling surface

Method used

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  • Method and system for signaling and aquaplaning condition of a tyre fitted on a vehicle
  • Method and system for signaling and aquaplaning condition of a tyre fitted on a vehicle
  • Method and system for signaling and aquaplaning condition of a tyre fitted on a vehicle

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Embodiment Construction

[0049] With reference to the drawings, a tire for a wheel has been generally indicated at 1 .

[0050] Tire 1 ( figure 1 ) is fitted on the rim 2, which in turn is fitted on the hub 3; through the hub 3, the tire 1 is mounted on a vehicle (not shown) so that the vehicle can move.

[0051] While the vehicle is running, the tire 1 rolling on the rolling surface 5 (eg the ground) is subjected to a displacement in the longitudinal direction X which is substantially parallel to the rolling surface 5 itself.

[0052] The rolling direction of tire 1 is figure 1 is shown by arrow F.

[0053] As mentioned above, the tire 1 is in contact with the rolling surface 5 in a so-called "footprint area" 4; the "footprint area" 4 is correspondingly defined between a first longitudinal end 4a and a second longitudinal end 4b.

[0054] Specifically, a water layer 9 is interposed between the tire 1 and the rolling surface 5 . Due to the presence of the water layer 9, the tire 1 may reduce its gri...

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Abstract

A method of signalling an aquaplaning condition of a tyre, the latter rolling on a rolling surface (5), a footprint area being defined between said tyre and said rolling surface (5), a layer of water (9) being interposed between the tyre and said rolling surface (5), said method comprising: detecting a first signal (S1) representative of a deformation of said tyre due to rolling of said tyre (1) on said rolling surface (5), said first signal comprising at least one portion representative of the interaction between the tyre and said layer of water (9); processing said first signal (S1) so as to determine a parameter (P1, P2, P3, P4) representative of an aquaplaning condition of said tyre (1), as a function of said first signal (S1); generating a notification signal (SN) as a function of said at least one parameter (P1, P2, P3, P4). Also disclosed is a system for signalling an aquaplaning condition of a tyre.

Description

technical field [0001] The present invention relates to a method and a system for signaling the adrift condition of tires fitted on a vehicle. Background technique [0002] In this context, "adrift" is intended to mean a state in which a tire has completely lost its Its maneuverability is such that the tire continues to follow a direction substantially governed by inertial forces without altering its trajectory, even if the driver of the vehicle on which the tire is fitted tries to alter the trajectory of the vehicle. [0003] The plank condition occurs when the drainage and drainage of water in the tread grooves and / or grooves becomes insufficient at the footprint area, causing the tire to lose grip. [0004] The lifting of the tire from the ground thus takes place exactly at the contact area and as a result the tire loses its handling and traction capabilities. [0005] Adrifting can be very dangerous because in such a state the driver essentially loses control of the ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/172
CPCB60T2210/13B60T8/1725B60T2240/04
Inventor M·布鲁萨罗斯科F·曼柯苏
Owner PIRELLI TYRE SPA
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