US 12,077,172 B2
Automatically controlling a driven axle of a motor vehicle
Gerd Kaiser, Lobbach (DE); Enrique Cordero, Cologne (DE); Volker-René Ruiters, Siegburg (DE); Marius Offenberg, Langenfeld (DE); and Rudolf Fitz, Troisdorf (DE)
Assigned to GKN Automotive Limited, Birmingham (GB)
Appl. No. 17/783,067
Filed by GKN Automotive Ltd., Birmingham (GB)
PCT Filed Dec. 11, 2019, PCT No. PCT/EP2019/084569
§ 371(c)(1), (2) Date Jun. 7, 2022,
PCT Pub. No. WO2021/115580, PCT Pub. Date Jun. 17, 2021.
Prior Publication US 2023/0021794 A1, Jan. 26, 2023
Int. Cl. B60W 50/12 (2012.01); B60W 10/04 (2006.01); B60W 10/08 (2006.01); B60W 40/105 (2012.01); B60W 30/18 (2012.01)
CPC B60W 50/12 (2013.01) [B60W 10/04 (2013.01); B60W 10/08 (2013.01); B60W 40/105 (2013.01); B60W 30/18145 (2013.01); B60W 2510/0661 (2013.01); B60W 2510/20 (2013.01); B60W 2520/28 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for controlling at least one driven axle of a motor vehicle, wherein the motor vehicle has at least one axle having at least one wheel and at least one drive unit for providing a drive torque for the at least one axle and for the at least one wheel and a control device for controlling the drive unit; wherein the method is carried out during operation of the motor vehicle and comprises:
a) establishing a first actual speed of the motor vehicle;
b) establishing a second actual speed of the at least one wheel;
c) calculating a target speed of the at least one wheel for the established first actual speed taking into account parameters;
d) determining an actual slip of the at least one wheel with respect to a substrate on which the motor vehicle is being moved;
e) when the actual slip exceeds a defined first limit slip, generating a limit torque by which the drive torque produced by the drive unit is adjusted;
wherein the axle has at least two wheels;
wherein, when the motor vehicle travels on a bend, in the event of a positive second acceleration of the motor vehicle, the actual speed of the wheel at the outer side of the bend is established as the second actual speed and/or in the event of a negative second acceleration of the motor vehicle, at least the actual speed of the wheel at the inner side of the bend is established as the second actual speed.