US 12,420,793 B2
Method and control arrangement for controlling a speed of a vehicle in a downhill road section followed by an uphill road section
Manne Held, Älvsjö (SE); and Mikael Alenius, Segeltorp (SE)
Assigned to Scania CV AB, Södertälje (SE)
Filed by Scania CV AB, Södertälje (SE)
Filed on May 30, 2023, as Appl. No. 18/203,190.
Claims priority of application No. 2250712-3 (SE), filed on Jun. 14, 2022.
Prior Publication US 2023/0398989 A1, Dec. 14, 2023
Int. Cl. B60W 10/18 (2012.01); B60W 10/08 (2006.01); B60W 30/18 (2012.01); B60W 40/06 (2012.01)
CPC B60W 30/18009 (2013.01) [B60W 10/08 (2013.01); B60W 10/18 (2013.01); B60W 40/06 (2013.01); B60W 2510/087 (2013.01); B60W 2720/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method performed by a control arrangement for controlling a speed of a vehicle in a downhill road section followed by an uphill road section, the vehicle comprising an electrical machine system being configured to apply a brake power for braking the vehicle to maintain a first vehicle speed in the downhill road section, and to apply a propelling power for propelling the vehicle in the uphill road section, the method comprising:
determining whether a temperature of the electrical machine system will exceed a temperature limit in the uphill road section, if maintaining the first vehicle speed in the downhill road section; and
when it is determined that the temperature will exceed the temperature limit in the uphill road section:
reducing the first vehicle speed to a second vehicle speed in the downhill road section such that, in comparison to when the first vehicle speed would have been maintained, the temperature of the electrical machine system is decreased when the vehicle reaches the uphill road section, resulting from a travelling time in the downhill road section being increased.