Process for the early recognition of hydroplaning of a vehicle tire on a wet road
AssigneeDaimler-Benz Aktiengesellschaft
InventorDieter Ammon
Life of this patent
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Abstract
The invention provides a process for the advance recognition of the hydroplaning of a vehicle tire on a wet road, in which the rotational speed of the wheel carrying the tire is sensed by a rotational speed sensor and the frequency spectrum of the rotational wheel speed is evaluated. According to the invention, in the frequency range above 20 Hz, the natural resonance behavior of the rotational tire vibrations is evaluated continuously, and a conclusion on hydroplaning of the tire is drawn from detuning of the rotatory natural frequencies.
Claims10
Process for detecting imminent hydroplaning of a vehicle tire by evaluation of a frequency spectrum of rotational wheel speed, said process comprising:
- detecting rotational speed of a wheel which carries said vehicle tire;
- continuously evaluating a natural resonance response of rotational tire vibrations in a frequency range above 20 Hz;
- and
- determining imminence of hydroplaning of the tire based on a detuning of rotational natural frequencies.
Dependencies are inferred from the claim text.