METHOD AND APPARATUS FOR DETERMINING ROAD GRIP CONDITIONS OF A TYRE FOR VEHICLES

摘要

A method of determining the road grip conditions of a tyre for vehicles, in which a footprint area (4) of the tyre (1) on the road is defined between a first and a second longitudinal ends (4a, 4b), said method comprising: determining an instantaneous value (IV) of a main parameter (MP) representative of instantaneous road grip conditions of a tyre (1); determining a threshold value (TV) for said main parameter (MP), said threshold value (TV) being representative of limit conditions for grip between the tyre (1) and road; comparing said instantaneous value (IV) with said threshold value (TV); generating a notification signal (41) as a function of the outcome of said comparison, said notification signal (41) being representative of a difference between said threshold value' (TV) and instantaneous value (IV) of said main parameter (MP). Also described is an apparatus (9) for putting said method into practice.