Low tire pressure is identified indirectly in a vehicle (300) having at least three wheels (110, 120, 130, 140, 150, 160) of which at least one is driven. A respective rotational speed (ω,1 ω2, ω3, ω4, ω5, ω6) is registered for each wheel of the vehicle. The rotational speeds are compared pairwise to one another to derive at least one test variable (R1, R2). The comparing involves: estimating, for each driven wheel (130, 140), a longitudinal slip (s) resulting from a traction torque (T) applied to the driven wheel; determining a first compensation factor, αi,j, which cancels out the estimated longitudinal slip (s) resulting from the traction torque (T); and evaluating the rotational speeds of the wheels pairwise against one another in consideration of αi,j and of the wheels of at least one evaluated pair are mutually different. the step of pairwise comparing the rotational speeds (ω,1 ω2, ω3, ω4, ω5, ω6) to one another comprises calculating at least one quotient between first and second rotational speeds of first and second wheels respectively. The test variable(s) (R1,R2) is (are) studied to check if one or more of the wheels have a tire pressure below a threshold level.
METHOD, CONTROL UNIT, COMPUTER PROGRAM PRODUCT AND CARRIER FOR IDENTIFYING LOW TIRE PRESSURE IN A VEHICLE
VERFAHREN, STEUEREINHEIT, COMPUTERPROGRAMMPRODUKT UND TRÄGER ZUR IDENTIFIZIERUNG EINES NIEDRIGEN REIFENDRUCKS IN EINEM FAHRZEUG
PROCÉDÉ, UNITÉ DE COMMANDE, PRODUIT-PROGRAMME INFORMATIQUE ET SUPPORT POUR IDENTIFIER UNE FAIBLE PRESSION DE PNEU DANS UN VÉHICULE
2023-03-15
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
European Patent Office | 2019
|European Patent Office | 2023
|Vehicle tire pressure detection unit and vehicle tire pressure detection device
European Patent Office | 2015
|TIRE PRESSURE SENSOR UNIT, TIRE PRESSURE NOTIFICATION DEVICE AND VEHICLE
European Patent Office | 2016
|European Patent Office | 2020
|