The invention relates to a method for determining the tread depth (tp) of a tread of a tire (2) mounted on a rim (1) on a vehicle, in which method the current dynamic rolling radius (Rd) of the tire is continually determined in usage phases (A1, A2) of the tire (2) by ascertaining a current angular velocity (ω) of the tire (2) from data determined by a first sensor and ascertaining a current velocity (V) of the vehicle from data determined by a second sensor (21) and determining the current dynamic rolling radius (Rd) on the basis of the determined current angular velocity (ω) and the current velocity (V) of the vehicle, wherein a starting value (S1) of the dynamic rolling radius (Rd) is recorded at the beginning of a first usage phase (A1) and a current tread depth (tp) of the tire (2) is determined from deviations of the current dynamic rolling radius (Rd) from the starting value, and wherein a current movement status of the tire (2) is ascertained from data determined by a third sensor (20), by determining a usage phase (A1, A2) as the movement status if data determined above a predefined limit value exist and determining a non-usage phase (N) as the movement status if data determined below a predefined limit value over a predefined time period exist, and, in the event of a change in the movement status from a non-usage phase (N) to a subsequent usage phase (A2), a new starting value (S2) of the dynamic rolling radius (Rd) is recorded and the subsequently determined current dynamic rolling radii (Rd) are compared with said new starting value instead of with the previous starting value in order to continually determine the current tread depth (tp). The invention also relates to a control unit and to a system for determining the tread depth (tp).
VERFAHREN, STEUERGERÄT UND SYSTEM ZUR ERMITTLUNG DER PROFILTIEFE EINES REIFENS
METHOD, CONTROL UNIT AND SYSTEM FOR DETERMINING THE TREAD DEPTH OF A TIRE
PROCÉDÉ, UNITÉ DE COMMANDE ET SYSTÈME POUR DÉTERMINER LA PROFONDEUR DE BANDE DE ROULEMENT D'UN PNEU
2025-03-19
Patent
Electronic Resource
German
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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