Seite - 143 - in Maximum Tire-Road Friction Coefficient Estimation

D Vehicle and tire model parameters Table D.3.: TMsimple tire model parameters for the summer tire of type Radial 245/40 R18 that was mounted on the test vehicle (Audi A4 Avant 1.8 Tfsi) during the measurements. All values were measured on a tire test bench, except cT,x and cT,ywhich were taken from Table D.1 in the absence of other data. Parameter Symbol Value Unit Fz,nom 2 ·Fz,nom Peak Ymax,x 3789 6688 N Saturation Y∞,x 2809 4890 Initial stiffness dY0,x 1963 3021 N/% Peak Ymax,y 3766 6581 N Saturation Y∞,y 3565 5898 Initial stiffness dY0,y 54028 94461 N/rad Longitudinal spring stiffness cT,x 200000 N/mLateral spring stiffness cT,y 100000 Vertical spring stiffness cT,z 282000 Nominal tire load Fz,nom 3000 N Nominal friction potential µ0 1 - Rolling resistance coefficient fr 0.01 - Unloaded tire radius r0 0.3266 m 143